Added new gcc and clang jobs to GitHub Actions.

This reduces the likelihood of spurious CI failures caused by DDoS filters
being triggered by massive numbers of concurrent CI jobs.

.github/workflows/ci.yml

@@ -0,0 +1,611 @@
+# Copyright 2021-2025 Andrey Semashev
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - feature/**
+
+concurrency:
+  group: ${{format('{0}:{1}', github.repository, github.ref)}}
+  cancel-in-progress: true
+
+env:
+  GIT_FETCH_JOBS: 8
+  NET_RETRY_COUNT: 5
+  DEFAULT_BUILD_VARIANT: debug,release
+
+jobs:
+  posix:
+    defaults:
+      run:
+        shell: bash
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # Linux, gcc
+          - toolset: gcc-4.7
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - g++-4.7
+          - toolset: gcc-4.8
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-4.8
+          - toolset: gcc-4.9
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - g++-4.9
+          - toolset: gcc-5
+            cxxstd: "11,14,1z"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - g++-5
+          - toolset: gcc-6
+            cxxstd: "11,14,1z"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-6
+          - toolset: gcc-7
+            cxxstd: "11,14,17"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-7
+          - toolset: gcc-8
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - g++-8
+          - toolset: gcc-9
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - g++-9
+          - toolset: gcc-10
+            cxxstd: "11,14,17,20"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - g++-10
+          - toolset: gcc-11
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-22.04
+            install:
+              - g++-11
+          - toolset: gcc-12
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-22.04
+            install:
+              - g++-12
+          - toolset: gcc-13
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-24.04
+            install:
+              - g++-13
+          - toolset: gcc-14
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-24.04
+            install:
+              - g++-14
+          - toolset: gcc-15
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-latest
+            container: ubuntu:25.04
+            install:
+              - g++-15
+          - name: UBSAN
+            toolset: gcc-13
+            cxxstd: "11,14,17,20,23"
+            ubsan: 1
+            build_variant: debug
+            os: ubuntu-24.04
+            install:
+              - g++-13
+
+          # Linux, clang
+          - toolset: clang
+            compiler: clang++-3.5
+            cxxstd: "11"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.5
+          - toolset: clang
+            compiler: clang++-3.6
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.6
+          - toolset: clang
+            compiler: clang++-3.7
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.7
+          - toolset: clang
+            compiler: clang++-3.8
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:16.04
+            install:
+              - clang-3.8
+          - toolset: clang
+            compiler: clang++-3.9
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-3.9
+          - toolset: clang
+            compiler: clang++-4.0
+            cxxstd: "11,14"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-4.0
+          - toolset: clang
+            compiler: clang++-5.0
+            cxxstd: "11,14,1z"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-5.0
+          - toolset: clang
+            compiler: clang++-6.0
+            cxxstd: "11,14,17"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-6.0
+          - toolset: clang
+            compiler: clang++-7
+            cxxstd: "11,14,17"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-7
+          # Note: clang-8 does not fully support C++20, so it is not compatible with libstdc++-8 in this mode
+          - toolset: clang
+            compiler: clang++-8
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:18.04
+            install:
+              - clang-8
+              - g++-7
+            gcc_toolchain: 7
+          - toolset: clang
+            compiler: clang++-9
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - clang-9
+          - toolset: clang
+            compiler: clang++-10
+            cxxstd: "11,14,17,20"
+            os: ubuntu-latest
+            container: ubuntu:20.04
+            install:
+              - clang-10
+          - toolset: clang
+            compiler: clang++-11
+            cxxstd: "11,14,17,20"
+            os: ubuntu-22.04
+            install:
+              - clang-11
+          - toolset: clang
+            compiler: clang++-12
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-12
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-13
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-13
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-14
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-14
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-15
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install:
+              - clang-15
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-16
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-24.04
+            install:
+              - clang-16
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-17
+            cxxstd: "11,14,17,20,23"
+            os: ubuntu-24.04
+            install:
+              - clang-17
+              - g++-11
+            gcc_toolchain: 11
+          - toolset: clang
+            compiler: clang++-18
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-24.04
+            install:
+              - clang-18
+              - g++-13
+          - toolset: clang
+            compiler: clang++-19
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-24.04
+            install:
+              - clang-19
+          - toolset: clang
+            compiler: clang++-20
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-latest
+            container: ubuntu:25.04
+            install:
+              - clang-20
+          - toolset: clang
+            compiler: clang++-20
+            cxxstd: "11,14,17,20,23,26"
+            os: ubuntu-latest
+            container: ubuntu:25.04
+            install:
+              - clang-20
+              - libc++-20-dev
+              - libc++abi-20-dev
+            cxxflags: -stdlib=libc++
+            linkflags: -stdlib=libc++
+          - name: UBSAN
+            toolset: clang
+            compiler: clang++-18
+            cxxstd: "11,14,17,20,23"
+            cxxflags: -stdlib=libc++
+            linkflags: "-stdlib=libc++ -lubsan"
+            ubsan: 1
+            build_variant: debug
+            os: ubuntu-24.04
+            install:
+              - clang-18
+              - libc++-18-dev
+              - libc++abi-18-dev
+
+          - toolset: clang
+            cxxstd: "11,14,17,20,2b"
+            os: macos-13
+          - toolset: clang
+            cxxstd: "11,14,17,20,2b"
+            os: macos-14
+
+    timeout-minutes: 15
+    runs-on: ${{matrix.os}}
+    container: ${{matrix.container}}
+
+    steps:
+      - name: Setup environment
+        run: |
+            if [ -f "/etc/debian_version" ]
+            then
+                echo "DEBIAN_FRONTEND=noninteractive" >> $GITHUB_ENV
+                export DEBIAN_FRONTEND=noninteractive
+            fi
+            if [ -n "${{matrix.container}}" ]
+            then
+                echo "GHA_CONTAINER=${{matrix.container}}" >> $GITHUB_ENV
+                if [ -f "/etc/debian_version" ]
+                then
+                    # Use Azure APT mirrors in containers to avoid HTTP errors due to DDoS filters triggered by lots of CI jobs launching concurrently.
+                    # Note that not all Ubuntu versions support "mirror+file:..." URIs in APT sources, so just use Azure mirrors exclusively.
+                    # Note also that on recent Ubuntu versions DEB822 format is used for source files.
+                    APT_SOURCES=()
+                    if [ -d "/etc/apt/sources.list.d" ]
+                    then
+                        readarray -t APT_SOURCES < <(find "/etc/apt/sources.list.d" -type f -name '*.sources' -print)
+                    fi
+                    if [ -f "/etc/apt/sources.list" ]
+                    then
+                        APT_SOURCES+=("/etc/apt/sources.list")
+                    fi
+                    if [ "${#APT_SOURCES[@]}" -gt 0 ]
+                    then
+                        sed -i -E -e 's!([^ ]+) (http|https)://(archive|security)\.ubuntu\.com/ubuntu[^ ]*(.*)!\1 http://azure.archive.ubuntu.com/ubuntu/\4!' "${APT_SOURCES[@]}"
+                    fi
+                    apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+                    if [ "$(apt-cache search "^python-is-python3$" | wc -l)" -ne 0 ]
+                    then
+                        PYTHON_PACKAGE="python-is-python3"
+                    else
+                        PYTHON_PACKAGE="python"
+                    fi
+                    apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y sudo software-properties-common tzdata wget curl apt-transport-https ca-certificates make build-essential g++ $PYTHON_PACKAGE python3 perl git cmake
+                fi
+            fi
+            git config --global pack.threads 0
+
+      - name: Install packages
+        if: matrix.install
+        run: |
+            declare -a SOURCE_KEYS SOURCES
+            if [ -n "${{join(matrix.source_keys, ' ')}}" ]
+            then
+                SOURCE_KEYS=("${{join(matrix.source_keys, '" "')}}")
+            fi
+            if [ -n "${{join(matrix.sources, ' ')}}" ]
+            then
+                SOURCES=("${{join(matrix.sources, '" "')}}")
+            fi
+            for key in "${SOURCE_KEYS[@]}"
+            do
+                for i in {1..$NET_RETRY_COUNT}
+                do
+                    echo "Adding key: $key"
+                    wget -O - "$key" | sudo apt-key add - && break || sleep 2
+                done
+            done
+            if [ ${#SOURCES[@]} -gt 0 ]
+            then
+                APT_ADD_REPO_COMMON_ARGS=("-y")
+                APT_ADD_REPO_SUPPORTED_ARGS="$(apt-add-repository --help | perl -ne 'if (/^\s*-n/) { print "n"; } elsif (/^\s*-P/) { print "P"; } elsif (/^\s*-S/) { print "S"; } elsif (/^\s*-U/) { print "U"; }')"
+                if [ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*n*}" ]
+                then
+                    APT_ADD_REPO_COMMON_ARGS+=("-n")
+                fi
+                APT_ADD_REPO_HAS_SOURCE_ARGS="$([ -n "$APT_ADD_REPO_SUPPORTED_ARGS" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*P*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*S*}" -a -z "${APT_ADD_REPO_SUPPORTED_ARGS##*U*}" ] && echo 1 || echo 0)"
+                for source in "${SOURCES[@]}"
+                do
+                    for i in {1..$NET_RETRY_COUNT}
+                    do
+                        APT_ADD_REPO_ARGS=("${APT_ADD_REPO_COMMON_ARGS[@]}")
+                        if [ $APT_ADD_REPO_HAS_SOURCE_ARGS -ne 0 ]
+                        then
+                            case "$source" in
+                            "ppa:"*)
+                                APT_ADD_REPO_ARGS+=("-P")
+                                ;;
+                            "deb "*)
+                                APT_ADD_REPO_ARGS+=("-S")
+                                ;;
+                            *)
+                                APT_ADD_REPO_ARGS+=("-U")
+                                ;;
+                            esac
+                        fi
+                        APT_ADD_REPO_ARGS+=("$source")
+                        echo "apt-add-repository ${APT_ADD_REPO_ARGS[@]}"
+                        sudo -E apt-add-repository "${APT_ADD_REPO_ARGS[@]}" && break || sleep 2
+                    done
+                done
+            fi
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
+            sudo apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y ${{join(matrix.install, ' ')}}
+
+      - name: Setup GCC Toolchain
+        if: matrix.gcc_toolchain
+        run: |
+            GCC_TOOLCHAIN_ROOT="$HOME/gcc-toolchain"
+            echo "GCC_TOOLCHAIN_ROOT=\"$GCC_TOOLCHAIN_ROOT\"" >> $GITHUB_ENV
+            MULTIARCH_TRIPLET="$(dpkg-architecture -qDEB_HOST_MULTIARCH)"
+            mkdir -p "$GCC_TOOLCHAIN_ROOT"
+            ln -s /usr/include "$GCC_TOOLCHAIN_ROOT/include"
+            ln -s /usr/bin "$GCC_TOOLCHAIN_ROOT/bin"
+            mkdir -p "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET"
+            ln -s "/usr/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}" "$GCC_TOOLCHAIN_ROOT/lib/gcc/$MULTIARCH_TRIPLET/${{matrix.gcc_toolchain}}"
+
+      - name: Setup Boost
+        run: |
+            echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
+            LIBRARY=${GITHUB_REPOSITORY#*/}
+            echo LIBRARY: $LIBRARY
+            echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
+            echo GITHUB_BASE_REF: $GITHUB_BASE_REF
+            echo GITHUB_REF: $GITHUB_REF
+            REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+            REF=${REF#refs/heads/}
+            echo REF: $REF
+            BOOST_BRANCH=develop && [ "$REF" = "master" ] && BOOST_BRANCH=master || true
+            echo BOOST_BRANCH: $BOOST_BRANCH
+            BUILD_JOBS=$((nproc || sysctl -n hw.ncpu) 2> /dev/null)
+            echo "BUILD_JOBS=$BUILD_JOBS" >> $GITHUB_ENV
+            echo "CMAKE_BUILD_PARALLEL_LEVEL=$BUILD_JOBS" >> $GITHUB_ENV
+            DEPINST_ARGS=()
+            GIT_VERSION="$(git --version | sed -e 's/git version //')"
+            GIT_HAS_JOBS=1
+            if [ -f "/etc/debian_version" ]
+            then
+                if $(dpkg --compare-versions "$GIT_VERSION" lt 2.8.0)
+                then
+                    GIT_HAS_JOBS=0
+                fi
+            else
+                declare -a GIT_VER=(${GIT_VERSION//./ })
+                declare -a GIT_MIN_VER=(2 8 0)
+                for ((i=0; i<${#GIT_VER[@]}; i++))
+                do
+                    if [ -z "${GIT_MIN_VER[i]}" ]
+                    then
+                        GIT_MIN_VER[i]=0
+                    fi
+                    if [ "${GIT_VER[i]}" -lt "${GIT_MIN_VER[i]}" ]
+                    then
+                        GIT_HAS_JOBS=0
+                        break
+                    fi
+                done
+            fi
+            if [ "$GIT_HAS_JOBS" -ne 0 ]
+            then
+                DEPINST_ARGS+=("--git_args" "--jobs $GIT_FETCH_JOBS")
+            fi
+            mkdir -p snapshot
+            cd snapshot
+            echo "Downloading library snapshot: https://github.com/${GITHUB_REPOSITORY}/archive/${GITHUB_SHA}.tar.gz"
+            curl -L --retry "$NET_RETRY_COUNT" -o "${LIBRARY}-${GITHUB_SHA}.tar.gz" "https://github.com/${GITHUB_REPOSITORY}/archive/${GITHUB_SHA}.tar.gz"
+            tar -xf "${LIBRARY}-${GITHUB_SHA}.tar.gz"
+            if [ ! -d "${LIBRARY}-${GITHUB_SHA}" ]
+            then
+                echo "Library snapshot does not contain the library directory ${LIBRARY}-${GITHUB_SHA}:"
+                ls -la
+                exit 1
+            fi
+            rm -f "${LIBRARY}-${GITHUB_SHA}.tar.gz"
+            cd ..
+            git clone -b "$BOOST_BRANCH" --depth 1 "https://github.com/boostorg/boost.git" "boost-root"
+            cd boost-root
+            mkdir -p libs
+            rm -rf "libs/$LIBRARY"
+            mv -f "../snapshot/${LIBRARY}-${GITHUB_SHA}" "libs/$LIBRARY"
+            rm -rf "../snapshot"
+            git submodule update --init tools/boostdep
+            DEPINST_ARGS+=("$LIBRARY")
+            python tools/boostdep/depinst/depinst.py "${DEPINST_ARGS[@]}"
+            if [ -z "${{matrix.cmake_tests}}" ]
+            then
+                ./bootstrap.sh
+                ./b2 headers
+                if [ -n "${{matrix.compiler}}" -o -n "$GCC_TOOLCHAIN_ROOT" ]
+                then
+                    echo -n "using ${{matrix.toolset}} : : ${{matrix.compiler}}" > ~/user-config.jam
+                    if [ -n "$GCC_TOOLCHAIN_ROOT" ]
+                    then
+                        echo -n " : <compileflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\" <linkflags>\"--gcc-toolchain=$GCC_TOOLCHAIN_ROOT\"" >> ~/user-config.jam
+                    fi
+                    echo " ;" >> ~/user-config.jam
+                fi
+            fi
+
+      - name: Run tests
+        if: matrix.cmake_tests == ''
+        run: |
+            cd boost-root
+            B2_ARGS=("-j" "$BUILD_JOBS" "toolset=${{matrix.toolset}}" "cxxstd=${{matrix.cxxstd}}")
+            if [ -n "${{matrix.build_variant}}" ]
+            then
+                B2_ARGS+=("variant=${{matrix.build_variant}}")
+            else
+                B2_ARGS+=("variant=$DEFAULT_BUILD_VARIANT")
+            fi
+            if [ -n "${{matrix.threading}}" ]
+            then
+                B2_ARGS+=("threading=${{matrix.threading}}")
+            fi
+            if [ -n "${{matrix.ubsan}}" ]
+            then
+                export UBSAN_OPTIONS="print_stacktrace=1"
+                B2_ARGS+=("cxxflags=-fsanitize=undefined -fno-sanitize-recover=undefined" "linkflags=-fsanitize=undefined -fuse-ld=gold" "define=UBSAN=1" "debug-symbols=on" "visibility=global")
+            fi
+            if [ -n "${{matrix.cxxflags}}" ]
+            then
+                B2_ARGS+=("cxxflags=${{matrix.cxxflags}}")
+            fi
+            if [ -n "${{matrix.linkflags}}" ]
+            then
+                B2_ARGS+=("linkflags=${{matrix.linkflags}}")
+            fi
+            B2_ARGS+=("libs/$LIBRARY/test")
+            ./b2 "${B2_ARGS[@]}"
+
+  windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: msvc-14.3
+            cxxstd: "14,17,20,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: clang-win
+            cxxstd: "14,17,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: gcc
+            cxxstd: "11,14,17,20,23"
+            addrmd: 64
+            os: windows-2022
+
+    timeout-minutes: 15
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - name: Setup Boost
+        shell: cmd
+        run: |
+            echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
+            for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
+            echo LIBRARY: %LIBRARY%
+            echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
+            echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
+            echo GITHUB_REF: %GITHUB_REF%
+            if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
+            set BOOST_BRANCH=develop
+            for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
+            echo BOOST_BRANCH: %BOOST_BRANCH%
+            mkdir snapshot
+            cd snapshot
+            echo Downloading library snapshot: https://github.com/%GITHUB_REPOSITORY%/archive/%GITHUB_SHA%.zip
+            curl -L --retry %NET_RETRY_COUNT% -o "%LIBRARY%-%GITHUB_SHA%.zip" "https://github.com/%GITHUB_REPOSITORY%/archive/%GITHUB_SHA%.zip"
+            tar -xf "%LIBRARY%-%GITHUB_SHA%.zip"
+            if not exist "%LIBRARY%-%GITHUB_SHA%\" (
+                echo Library snapshot does not contain the library directory %LIBRARY%-%GITHUB_SHA%:
+                dir
+                exit /b 1
+            )
+            del /f "%LIBRARY%-%GITHUB_SHA%.zip"
+            cd ..
+            git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+            cd boost-root
+            if not exist "libs\" mkdir libs
+            if exist "libs\%LIBRARY%\" rmdir /s /q "libs\%LIBRARY%"
+            move /Y "..\snapshot\%LIBRARY%-%GITHUB_SHA%" "libs\%LIBRARY%"
+            rmdir /s /q "..\snapshot"
+            git submodule update --init tools/boostdep
+            python tools/boostdep/depinst/depinst.py --git_args "--jobs %GIT_FETCH_JOBS%" %LIBRARY%
+            cmd /c bootstrap
+            b2 -d0 headers
+
+      - name: Run tests
+        shell: cmd
+        run: |
+            cd boost-root
+            if not "${{matrix.cxxstd}}" == "" set CXXSTD=cxxstd=${{matrix.cxxstd}}
+            if not "${{matrix.addrmd}}" == "" set ADDRMD=address-model=${{matrix.addrmd}}
+            if not "${{matrix.build_variant}}" == "" (set BUILD_VARIANT=variant=${{matrix.build_variant}}) else (set BUILD_VARIANT=variant=%DEFAULT_BUILD_VARIANT%)
+            b2 -j %NUMBER_OF_PROCESSORS% libs/%LIBRARY%/test toolset=${{matrix.toolset}} %CXXSTD% %ADDRMD% %BUILD_VARIANT% embed-manifest-via=linker

Assignable.html

@@ -0,0 +1,109 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+
+<html>
+<head>
+  <meta http-equiv="Content-Language" content="en-us">
+  <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+
+  <title>Assignable</title>
+</head>
+
+<body bgcolor="#FFFFFF" link="#0000EE" text="#000000" vlink="#551A8B" alink=
+"#FF0000">
+  <img src="../../boost.png" alt="C++ Boost" width="277" height=
+  "86"><br clear="none">
+
+  <h1>Assignable</h1>
+
+  <h3>Description</h3>
+
+  <p>A type is Assignable if it is possible to assign one object of the type
+  to another object of that type.</p>
+
+  <h3>Notation</h3>
+
+  <table summary="">
+    <tr>
+      <td valign="top"><tt>T</tt></td>
+
+      <td valign="top">is type that is a model of Assignable</td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>t</tt></td>
+
+      <td valign="top">is an object of type <tt>T</tt></td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>u</tt></td>
+
+      <td valign="top">is an object of type <tt>T</tt> or possibly <tt>const
+      T</tt></td>
+    </tr>
+  </table>
+
+  <h3>Definitions</h3>
+
+  <h3>Valid expressions</h3>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Return type</th>
+
+      <th>Semantics</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Assignment</td>
+
+      <td valign="top"><tt>t = u</tt></td>
+
+      <td valign="top"><tt>T&amp;</tt></td>
+
+      <td valign="top"><tt>t</tt> is equivalent to <tt>u</tt></td>
+    </tr>
+  </table>
+
+  <h3>Models</h3>
+
+  <ul>
+    <li><tt>int</tt></li>
+
+    <li><tt>std::pair</tt></li>
+  </ul>
+
+  <h3>See also</h3>
+
+  <p><a href=
+  "http://www.sgi.com/tech/stl/DefaultConstructible.html">DefaultConstructible</a>
+  and <a href="./CopyConstructible.html">CopyConstructible</a><br></p>
+  <hr>
+
+  <p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src=
+  "../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional"
+  height="31" width="88"></a></p>
+
+  <p>Revised 
+  <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->05 December, 2006<!--webbot bot="Timestamp" endspan i-checksum="38516" --></p>
+
+  <table summary="">
+    <tr valign="top">
+      <td nowrap><i>Copyright &copy; 2000</i></td>
+
+      <td><i><a href="http://www.lsc.nd.edu/~jsiek">Jeremy Siek</a>, Univ.of
+      Notre Dame (<a href=
+      "mailto:jsiek@lsc.nd.edu">jsiek@lsc.nd.edu</a>)</i></td>
+    </tr>
+  </table>
+
+  <p><i>Distributed under the Boost Software License, Version 1.0. (See
+  accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
+  copy at <a href=
+  "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p>
+</body>
+</html>

CMakeLists.txt

@@ -0,0 +1,24 @@
+# Copyright 2018 Peter Dimov
+# Copyright 2018 Andrey Semashev
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5...3.20)
+
+project(boost_utility VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
+
+add_library(boost_utility INTERFACE)
+add_library(Boost::utility ALIAS boost_utility)
+
+target_include_directories(boost_utility INTERFACE include)
+
+target_link_libraries(boost_utility
+    INTERFACE
+        Boost::config
+        Boost::core
+        Boost::io
+        Boost::preprocessor
+        Boost::static_assert
+        Boost::throw_exception
+        Boost::type_traits
+)

Collection.html

@@ -0,0 +1,534 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+
+<html>
+<head>
+  <meta http-equiv="Content-Language" content="en-us">
+  <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+
+  <title>Collection</title>
+</head>
+
+<body bgcolor="#FFFFFF" link="#0000EE" text="#000000" vlink="#551A8B" alink=
+"#FF0000">
+  <h1><img src="../../boost.png" alt="boost logo" width="277" align="middle"
+  height="86"><br>
+  Collection</h1>
+
+  <h3>Description</h3>
+
+  <p>A Collection is a <i>concept</i> similar to the STL <a href=
+  "http://www.sgi.com/tech/stl/Container.html">Container</a> concept. A
+  Collection provides iterators for accessing a range of elements and
+  provides information about the number of elements in the Collection.
+  However, a Collection has fewer requirements than a Container. The
+  motivation for the Collection concept is that there are many useful
+  Container-like types that do not meet the full requirements of Container,
+  and many algorithms that can be written with this reduced set of
+  requirements. To summarize the reduction in requirements:</p>
+
+  <ul>
+    <li>It is not required to "own" its elements: the lifetime of an element
+    in a Collection does not have to match the lifetime of the Collection
+    object, though the lifetime of the element should cover the lifetime of
+    the Collection object.</li>
+
+    <li>The semantics of copying a Collection object is not defined (it could
+    be a deep or shallow copy or not even support copying).</li>
+
+    <li>The associated reference type of a Collection does not have to be a
+    real C++ reference.</li>
+  </ul>Because of the reduced requirements, some care must be taken when
+  writing code that is meant to be generic for all Collection types. In
+  particular, a Collection object should be passed by-reference since
+  assumptions can not be made about the behaviour of the copy constructor.
+
+  <h3>Associated types</h3>
+
+  <table border summary="">
+    <tr>
+      <td valign="top">Value type</td>
+
+      <td valign="top"><tt>X::value_type</tt></td>
+
+      <td valign="top">The type of the object stored in a Collection. If the
+      Collection is <i>mutable</i> then the value type must be <a href=
+      "http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>. Otherwise
+      the value type must be <a href=
+      "./CopyConstructible.html">CopyConstructible</a>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Iterator type</td>
+
+      <td valign="top"><tt>X::iterator</tt></td>
+
+      <td valign="top">The type of iterator used to iterate through a
+      Collection's elements. The iterator's value type is expected to be the
+      Collection's value type. A conversion from the iterator type to the
+      const iterator type must exist. The iterator type must be an <a href=
+      "http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Const iterator type</td>
+
+      <td valign="top"><tt>X::const_iterator</tt></td>
+
+      <td valign="top">A type of iterator that may be used to examine, but
+      not to modify, a Collection's elements.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Reference type</td>
+
+      <td valign="top"><tt>X::reference</tt></td>
+
+      <td valign="top">A type that behaves like a reference to the
+      Collection's value type. <a href="#n1">[1]</a></td>
+    </tr>
+
+    <tr>
+      <td valign="top">Const reference type</td>
+
+      <td valign="top"><tt>X::const_reference</tt></td>
+
+      <td valign="top">A type that behaves like a const reference to the
+      Collection's value type.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Pointer type</td>
+
+      <td valign="top"><tt>X::pointer</tt></td>
+
+      <td valign="top">A type that behaves as a pointer to the Collection's
+      value type.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Distance type</td>
+
+      <td valign="top"><tt>X::difference_type</tt></td>
+
+      <td valign="top">A signed integral type used to represent the distance
+      between two of the Collection's iterators. This type must be the same
+      as the iterator's distance type.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Size type</td>
+
+      <td valign="top"><tt>X::size_type</tt></td>
+
+      <td valign="top">An unsigned integral type that can represent any
+      nonnegative value of the Collection's distance type.</td>
+    </tr>
+  </table>
+
+  <h3>Notation</h3>
+
+  <table summary="">
+    <tr>
+      <td valign="top"><tt>X</tt></td>
+
+      <td valign="top">A type that is a model of Collection.</td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>a</tt>, <tt>b</tt></td>
+
+      <td valign="top">Object of type <tt>X</tt>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>T</tt></td>
+
+      <td valign="top">The value type of <tt>X</tt>.</td>
+    </tr>
+  </table>
+
+  <h3>Valid expressions</h3>
+
+  <p>The following expressions must be valid.</p>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Return type</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Beginning of range</td>
+
+      <td valign="top"><tt>a.begin()</tt></td>
+
+      <td valign="top"><tt>iterator</tt> if <tt>a</tt> is mutable,
+      <tt>const_iterator</tt> otherwise</td>
+    </tr>
+
+    <tr>
+      <td valign="top">End of range</td>
+
+      <td valign="top"><tt>a.end()</tt></td>
+
+      <td valign="top"><tt>iterator</tt> if <tt>a</tt> is mutable,
+      <tt>const_iterator</tt> otherwise</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Size</td>
+
+      <td valign="top"><tt>a.size()</tt></td>
+
+      <td valign="top"><tt>size_type</tt></td>
+    </tr><!--
+<TR>
+<TD VAlign=top>
+Maximum size
+</TD>
+<TD VAlign=top>
+<tt>a.max_size()</tt>
+</TD>
+<TD VAlign=top>
+<tt>size_type</tt>
+</TD>
+</TR>
+-->
+
+    <tr>
+      <td valign="top">Empty Collection</td>
+
+      <td valign="top"><tt>a.empty()</tt></td>
+
+      <td valign="top">Convertible to <tt>bool</tt></td>
+    </tr>
+
+    <tr>
+      <td valign="top">Swap</td>
+
+      <td valign="top"><tt>a.swap(b)</tt></td>
+
+      <td valign="top"><tt>void</tt></td>
+    </tr>
+  </table>
+
+  <h3>Expression semantics</h3>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Semantics</th>
+
+      <th>Postcondition</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Beginning of range</td>
+
+      <td valign="top"><tt>a.begin()</tt></td>
+
+      <td valign="top">Returns an iterator pointing to the first element in
+      the Collection.</td>
+
+      <td valign="top"><tt>a.begin()</tt> is either dereferenceable or
+      past-the-end. It is past-the-end if and only if <tt>a.size() ==
+      0</tt>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">End of range</td>
+
+      <td valign="top"><tt>a.end()</tt></td>
+
+      <td valign="top">Returns an iterator pointing one past the last element
+      in the Collection.</td>
+
+      <td valign="top"><tt>a.end()</tt> is past-the-end.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Size</td>
+
+      <td valign="top"><tt>a.size()</tt></td>
+
+      <td valign="top">Returns the size of the Collection, that is, its
+      number of elements.</td>
+
+      <td valign="top"><tt>a.size() &gt;= 0</tt></td>
+    </tr><!--
+<TR>
+<TD VAlign=top>
+Maximum size
+</TD>
+<TD VAlign=top>
+<tt>a.max_size()</tt>
+</TD>
+<TD VAlign=top>
+&nbsp;
+</TD>
+<TD VAlign=top>
+Returns the largest size that this Collection can ever have. <A href="#8">[8]</A>
+</TD>
+<TD VAlign=top>
+<tt>a.max_size() &gt;= 0 &amp;&amp; a.max_size() &gt;= a.size()</tt>
+</TD>
+</TR>
+ -->
+
+    <tr>
+      <td valign="top">Empty Collection</td>
+
+      <td valign="top"><tt>a.empty()</tt></td>
+
+      <td valign="top">Equivalent to <tt>a.size() == 0</tt>. (But possibly
+      faster.)</td>
+
+      <td valign="top">&nbsp;</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Swap</td>
+
+      <td valign="top"><tt>a.swap(b)</tt></td>
+
+      <td valign="top">Equivalent to <tt>swap(a,b)</tt></td>
+
+      <td valign="top">&nbsp;</td>
+    </tr>
+  </table>
+
+  <h3>Complexity guarantees</h3>
+
+  <p><tt>begin()</tt> and <tt>end()</tt> are amortized constant time.</p>
+
+  <p><tt>size()</tt> is at most linear in the Collection's size.
+  <tt>empty()</tt> is amortized constant time.</p>
+
+  <p><tt>swap()</tt> is at most linear in the size of the two
+  collections.</p>
+
+  <h3>Invariants</h3>
+
+  <table border summary="">
+    <tr>
+      <td valign="top">Valid range</td>
+
+      <td valign="top">For any Collection <tt>a</tt>, <tt>[a.begin(),
+      a.end())</tt> is a valid range.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Range size</td>
+
+      <td valign="top"><tt>a.size()</tt> is equal to the distance from
+      <tt>a.begin()</tt> to <tt>a.end()</tt>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Completeness</td>
+
+      <td valign="top">An algorithm that iterates through the range
+      <tt>[a.begin(), a.end())</tt> will pass through every element of
+      <tt>a</tt>.</td>
+    </tr>
+  </table>
+
+  <h3>Models</h3>
+
+  <ul>
+    <li><tt>array</tt></li>
+
+    <li><tt>array_ptr</tt></li>
+
+    <li><tt>vector&lt;bool&gt;</tt></li>
+  </ul>
+
+  <h3>Collection Refinements</h3>
+
+  <p>There are quite a few concepts that refine the Collection concept,
+  similar to the concepts that refine the Container concept. Here is a brief
+  overview of the refining concepts.</p>
+
+  <h4>ForwardCollection</h4>
+
+  <p>The elements are arranged in some order that does not change
+  spontaneously from one iteration to the next. As a result, a
+  ForwardCollection is <a href=
+  "http://www.sgi.com/tech/stl/EqualityComparable.html">EqualityComparable</a>
+  and <a href=
+  "http://www.sgi.com/tech/stl/LessThanComparable.html">LessThanComparable</a>.
+  In addition, the iterator type of a ForwardCollection is a
+  MultiPassInputIterator which is just an InputIterator with the added
+  requirements that the iterator can be used to make multiple passes through
+  a range, and that if <tt>it1 == it2</tt> and <tt>it1</tt> is
+  dereferenceable then <tt>++it1 == ++it2</tt>. The ForwardCollection also
+  has a <tt>front()</tt> method.</p>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Return type</th>
+
+      <th>Semantics</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Front</td>
+
+      <td valign="top"><tt>a.front()</tt></td>
+
+      <td valign="top"><tt>reference</tt> if <tt>a</tt> is mutable,<br>
+      <tt>const_reference</tt> otherwise.</td>
+
+      <td valign="top">Equivalent to <tt>*(a.begin())</tt>.</td>
+    </tr>
+  </table>
+
+  <h4>ReversibleCollection</h4>
+
+  <p>The container provides access to iterators that traverse in both
+  directions (forward and reverse). The iterator type must meet all of the
+  requirements of <a href=
+  "http://www.sgi.com/tech/stl/BidirectionalIterator.html">BidirectionalIterator</a>
+  except that the reference type does not have to be a real C++ reference.
+  The ReversibleCollection adds the following requirements to those of
+  ForwardCollection.</p>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Return type</th>
+
+      <th>Semantics</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Beginning of range</td>
+
+      <td valign="top"><tt>a.rbegin()</tt></td>
+
+      <td valign="top"><tt>reverse_iterator</tt> if <tt>a</tt> is mutable,
+      <tt>const_reverse_iterator</tt> otherwise.</td>
+
+      <td valign="top">Equivalent to
+      <tt>X::reverse_iterator(a.end())</tt>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">End of range</td>
+
+      <td valign="top"><tt>a.rend()</tt></td>
+
+      <td valign="top"><tt>reverse_iterator</tt> if <tt>a</tt> is mutable,
+      <tt>const_reverse_iterator</tt> otherwise.</td>
+
+      <td valign="top">Equivalent to
+      <tt>X::reverse_iterator(a.begin())</tt>.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Back</td>
+
+      <td valign="top"><tt>a.back()</tt></td>
+
+      <td valign="top"><tt>reference</tt> if <tt>a</tt> is mutable,<br>
+      <tt>const_reference</tt> otherwise.</td>
+
+      <td valign="top">Equivalent to <tt>*(--a.end())</tt>.</td>
+    </tr>
+  </table>
+
+  <h4>SequentialCollection</h4>
+
+  <p>The elements are arranged in a strict linear order. No extra methods are
+  required.</p>
+
+  <h4>RandomAccessCollection</h4>
+
+  <p>The iterators of a RandomAccessCollection satisfy all of the
+  requirements of <a href=
+  "http://www.sgi.com/tech/stl/RandomAccessIterator.html">RandomAccessIterator</a>
+  except that the reference type does not have to be a real C++ reference. In
+  addition, a RandomAccessCollection provides an element access operator.</p>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Return type</th>
+
+      <th>Semantics</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Element Access</td>
+
+      <td valign="top"><tt>a[n]</tt></td>
+
+      <td valign="top"><tt>reference</tt> if <tt>a</tt> is mutable,
+      <tt>const_reference</tt> otherwise.</td>
+
+      <td valign="top">Returns the nth element of the Collection. <tt>n</tt>
+      must be convertible to <tt>size_type</tt>. Precondition: <tt>0 &lt;= n
+      &lt; a.size()</tt>.</td>
+    </tr>
+  </table>
+
+  <h3>Notes</h3>
+
+  <p><a name="n1" id="n1">[1]</a> The reference type does not have to be a
+  real C++ reference. The requirements of the reference type depend on the
+  context within which the Collection is being used. Specifically it depends
+  on the requirements the context places on the value type of the Collection.
+  The reference type of the Collection must meet the same requirements as the
+  value type. In addition, the reference objects must be equivalent to the
+  value type objects in the collection (which is trivially true if they are
+  the same object). Also, in a mutable Collection, an assignment to the
+  reference object must result in an assignment to the object in the
+  Collection (again, which is trivially true if they are the same object, but
+  non-trivial if the reference type is a proxy class).</p>
+
+  <h3>See also</h3>
+
+  <p><a href=
+  "http://www.sgi.com/tech/stl/Container.html">Container</a><br></p>
+  <hr>
+
+  <p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src=
+  "../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional"
+  height="31" width="88"></a></p>
+
+  <p>Revised 
+  <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->05
+  December, 2006<!--webbot bot="Timestamp" endspan i-checksum="38516" --></p>
+
+  <table summary="">
+    <tr valign="top">
+      <td nowrap><i>Copyright &copy; 2000</i></td>
+
+      <td><i><a href="http://www.boost.org/people/jeremy_siek.htm">Jeremy
+      Siek</a>, Univ.of Notre Dame and C++ Library &amp; Compiler Group/SGI
+      (<a href="mailto:jsiek@engr.sgi.com">jsiek@engr.sgi.com</a>)</i></td>
+    </tr>
+  </table>
+
+  <p><i>Distributed under the Boost Software License, Version 1.0. (See
+  accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
+  copy at <a href=
+  "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p>
+</body>
+</html>

CopyConstructible.html

@@ -0,0 +1,185 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+
+<html>
+<head>
+  <meta http-equiv="Content-Language" content="en-us">
+  <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+
+  <title>Copy Constructible</title>
+</head>
+
+<body bgcolor="#FFFFFF" link="#0000EE" text="#000000" vlink="#551A8B" alink=
+"#FF0000">
+  <img src="../../boost.png" alt="C++ Boost" width="277" height=
+  "86"><br clear="none">
+
+  <h1>Copy Constructible</h1>
+
+  <h3>Description</h3>
+
+  <p>A type is Copy Constructible if it is possible to copy objects of that
+  type.</p>
+
+  <h3>Notation</h3>
+
+  <table summary="">
+    <tr>
+      <td valign="top"><tt>T</tt></td>
+
+      <td valign="top">is type that is a model of Copy Constructible</td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>t</tt></td>
+
+      <td valign="top">is an object of type <tt>T</tt></td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>u</tt></td>
+
+      <td valign="top">is an object of type <tt>const T</tt></td>
+    </tr>
+  </table>
+
+  <h3>Definitions</h3>
+
+  <h3>Valid expressions</h3>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Return type</th>
+
+      <th>Semantics</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Copy constructor</td>
+
+      <td valign="top"><tt>T(t)</tt></td>
+
+      <td valign="top"><tt>T</tt></td>
+
+      <td valign="top"><tt>t</tt> is equivalent to <tt>T(t)</tt></td>
+    </tr>
+
+    <tr>
+      <td valign="top">Copy constructor</td>
+
+      <td valign="top">
+        <pre>
+T(u)
+</pre>
+      </td>
+
+      <td valign="top"><tt>T</tt></td>
+
+      <td valign="top"><tt>u</tt> is equivalent to <tt>T(u)</tt></td>
+    </tr>
+
+    <tr>
+      <td valign="top">Destructor</td>
+
+      <td valign="top">
+        <pre>
+t.~T()
+</pre>
+      </td>
+
+      <td valign="top"><tt>T</tt></td>
+
+      <td valign="top">&nbsp;</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Address Operator</td>
+
+      <td valign="top">
+        <pre>
+&amp;t
+</pre>
+      </td>
+
+      <td valign="top"><tt>T*</tt></td>
+
+      <td valign="top">denotes the address of <tt>t</tt></td>
+    </tr>
+
+    <tr>
+      <td valign="top">Address Operator</td>
+
+      <td valign="top">
+        <pre>
+&amp;u
+</pre>
+      </td>
+
+      <td valign="top"><tt>T*</tt></td>
+
+      <td valign="top">denotes the address of <tt>u</tt></td>
+    </tr>
+  </table>
+
+  <h3>Models</h3>
+
+  <ul>
+    <li><tt>int</tt></li>
+
+    <li><tt>std::pair</tt></li>
+  </ul>
+
+  <h3>Concept Checking Class</h3>
+  <pre>
+  template &lt;class T&gt;
+  struct CopyConstructibleConcept
+  {
+    void constraints() {
+      T a(b);            // require copy constructor
+      T* ptr = &amp;a;       // require address of operator
+      const_constraints(a);
+      ignore_unused_variable_warning(ptr);
+    }
+    void const_constraints(const T&amp; a) {
+      T c(a);            // require const copy constructor
+      const T* ptr = &amp;a; // require const address of operator
+      ignore_unused_variable_warning(c);
+      ignore_unused_variable_warning(ptr);
+    }
+    T b;
+  };
+</pre>
+
+  <h3>See also</h3>
+
+  <p><a href="http://www.sgi.com/tech/stl/DefaultConstructible.html">Default
+  Constructible</a> and <a href="./Assignable.html">Assignable</a><br></p>
+  <hr>
+
+  <p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src=
+  "../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional"
+  height="31" width="88"></a></p>
+
+  <p>Revised 
+  <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->05
+  December, 2006<!--webbot bot="Timestamp" endspan i-checksum="38516" --></p>
+
+  <table summary="">
+    <tr valign="top">
+      <td nowrap><i>Copyright &copy; 2000</i></td>
+
+      <td><i><a href="http://www.lsc.nd.edu/~jsiek">Jeremy Siek</a>, Univ.of
+      Notre Dame (<a href=
+      "mailto:jsiek@lsc.nd.edu">jsiek@lsc.nd.edu</a>)</i></td>
+    </tr>
+  </table>
+
+  <p><i>Distributed under the Boost Software License, Version 1.0. (See
+  accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
+  copy at <a href=
+  "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p>
+</body>
+</html>

LessThanComparable.html

@@ -0,0 +1,210 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+
+<html>
+<!--
+  == Copyright (c) 1996-1999
+  == Silicon Graphics Computer Systems, Inc.
+  ==
+  == Permission to use, copy, modify, distribute and sell this software
+  == and its documentation for any purpose is hereby granted without fee,
+  == provided that the above copyright notice appears in all copies and
+  == that both that copyright notice and this permission notice appear
+  == in supporting documentation.  Silicon Graphics makes no
+  == representations about the suitability of this software for any
+  == purpose.  It is provided "as is" without express or implied warranty.
+  ==
+  == Copyright (c) 1994
+  == Hewlett-Packard Company
+  ==
+  == Permission to use, copy, modify, distribute and sell this software
+  == and its documentation for any purpose is hereby granted without fee,
+  == provided that the above copyright notice appears in all copies and
+  == that both that copyright notice and this permission notice appear
+  == in supporting documentation.  Hewlett-Packard Company makes no
+  == representations about the suitability of this software for any
+  == purpose.  It is provided "as is" without express or implied warranty.
+  ==
+  -->
+
+<head>
+  <meta http-equiv="Content-Language" content="en-us">
+  <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+
+  <title>LessThanComparable</title>
+</head>
+
+<body bgcolor="#FFFFFF" link="#0000EE" text="#000000" vlink="#551A8B" alink=
+"#FF0000">
+  <img src="../../boost.png" alt="C++ Boost" width="277" height=
+  "86"><br clear="none">
+
+  <h1>LessThanComparable</h1>
+
+  <h3>Description</h3>
+
+  <p>A type is LessThanComparable if it is ordered: it must be possible to
+  compare two objects of that type using <tt>operator&lt;</tt>, and
+  <tt>operator&lt;</tt> must be a strict weak ordering relation.</p>
+
+  <h3>Refinement of</h3>
+
+  <h3>Associated types</h3>
+
+  <h3>Notation</h3>
+
+  <table summary="">
+    <tr>
+      <td valign="top"><tt>X</tt></td>
+
+      <td valign="top">A type that is a model of LessThanComparable</td>
+    </tr>
+
+    <tr>
+      <td valign="top"><tt>x</tt>, <tt>y</tt>, <tt>z</tt></td>
+
+      <td valign="top">Object of type <tt>X</tt></td>
+    </tr>
+  </table>
+
+  <h3>Definitions</h3>
+
+  <p>Consider the relation <tt>!(x &lt; y) &amp;&amp; !(y &lt; x)</tt>. If
+  this relation is transitive (that is, if <tt>!(x &lt; y) &amp;&amp; !(y
+  &lt; x) &amp;&amp; !(y &lt; z) &amp;&amp; !(z &lt; y)</tt> implies <tt>!(x
+  &lt; z) &amp;&amp; !(z &lt; x)</tt>), then it satisfies the mathematical
+  definition of an equivalence relation. In this case, <tt>operator&lt;</tt>
+  is a <i>strict weak ordering</i>.</p>
+
+  <p>If <tt>operator&lt;</tt> is a strict weak ordering, and if each
+  equivalence class has only a single element, then <tt>operator&lt;</tt> is
+  a <i>total ordering</i>.</p>
+
+  <h3>Valid expressions</h3>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Type requirements</th>
+
+      <th>Return type</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Less</td>
+
+      <td valign="top"><tt>x &lt; y</tt></td>
+
+      <td valign="top">&nbsp;</td>
+
+      <td valign="top">Convertible to <tt>bool</tt></td>
+    </tr>
+  </table>
+
+  <h3>Expression semantics</h3>
+
+  <table border summary="">
+    <tr>
+      <th>Name</th>
+
+      <th>Expression</th>
+
+      <th>Precondition</th>
+
+      <th>Semantics</th>
+
+      <th>Postcondition</th>
+    </tr>
+
+    <tr>
+      <td valign="top">Less</td>
+
+      <td valign="top"><tt>x &lt; y</tt></td>
+
+      <td valign="top"><tt>x</tt> and <tt>y</tt> are in the domain of
+      <tt>&lt;</tt></td>
+
+      <td valign="top">&nbsp;</td>
+    </tr>
+  </table>
+
+  <h3>Complexity guarantees</h3>
+
+  <h3>Invariants</h3>
+
+  <table border summary="">
+    <tr>
+      <td valign="top">Irreflexivity</td>
+
+      <td valign="top"><tt>x &lt; x</tt> must be false.</td>
+    </tr>
+
+    <tr>
+      <td valign="top">Antisymmetry</td>
+
+      <td valign="top"><tt>x &lt; y</tt> implies !(y &lt; x) <a href=
+      "#n2">[2]</a></td>
+    </tr>
+
+    <tr>
+      <td valign="top">Transitivity</td>
+
+      <td valign="top"><tt>x &lt; y</tt> and <tt>y &lt; z</tt> implies <tt>x
+      &lt; z</tt> <a href="#n3">[3]</a></td>
+    </tr>
+  </table>
+
+  <h3>Models</h3>
+
+  <ul>
+    <li>int</li>
+  </ul>
+
+  <h3>Notes</h3>
+
+  <p><a name="n1" id="n1">[1]</a> Only <tt>operator&lt;</tt> is fundamental;
+  the other inequality operators are essentially syntactic sugar.</p>
+
+  <p><a name="n2" id="n2">[2]</a> Antisymmetry is a theorem, not an axiom: it
+  follows from irreflexivity and transitivity.</p>
+
+  <p><a name="n3" id="n3">[3]</a> Because of irreflexivity and transitivity,
+  <tt>operator&lt;</tt> always satisfies the definition of a <i>partial
+  ordering</i>. The definition of a <i>strict weak ordering</i> is stricter,
+  and the definition of a <i>total ordering</i> is stricter still.</p>
+
+  <h3>See also</h3>
+
+  <p><a href=
+  "http://www.sgi.com/tech/stl/EqualityComparable.html">EqualityComparable</a>,
+  <a href=
+  "http://www.sgi.com/tech/stl/StrictWeakOrdering.html">StrictWeakOrdering</a><br>
+  </p>
+  <hr>
+
+  <p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src=
+  "../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional"
+  height="31" width="88"></a></p>
+
+  <p>Revised 
+  <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->05
+  December, 2006<!--webbot bot="Timestamp" endspan i-checksum="38516" --></p>
+
+  <table summary="">
+    <tr valign="top">
+      <td nowrap><i>Copyright &copy; 2000</i></td>
+
+      <td><i><a href="http://www.lsc.nd.edu/~jsiek">Jeremy Siek</a>, Univ.of
+      Notre Dame (<a href=
+      "mailto:jsiek@lsc.nd.edu">jsiek@lsc.nd.edu</a>)</i></td>
+    </tr>
+  </table>
+
+  <p><i>Distributed under the Boost Software License, Version 1.0. (See
+  accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
+  copy at <a href=
+  "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p>
+</body>
+</html>

MultiPassInputIterator.html

@@ -0,0 +1,95 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+
+<html>
+<head>
+  <meta http-equiv="Content-Language" content="en-us">
+  <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
+
+  <title>MultiPassInputIterator</title>
+</head>
+
+<body bgcolor="#FFFFFF" link="#0000EE" text="#000000" vlink="#551A8B" alink=
+"#FF0000">
+  <img src="../../boost.png" alt="C++ Boost" width="277" height=
+  "86"><br clear="none">
+
+  <h2><a name="concept:MultiPassInputIterator" id=
+  "concept:MultiPassInputIterator"></a> Multi-Pass Input Iterator</h2>
+
+  <p>This concept is a refinement of <a href=
+  "http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, adding
+  the requirements that the iterator can be used to make multiple passes
+  through a range, and that if <tt>it1 == it2</tt> and <tt>it1</tt> is
+  dereferenceable then <tt>++it1 == ++it2</tt>. The Multi-Pass Input Iterator
+  is very similar to the <a href=
+  "http://www.sgi.com/tech/stl/ForwardIterator.html">Forward Iterator</a>.
+  The only difference is that a <a href=
+  "http://www.sgi.com/tech/stl/ForwardIterator.html">Forward Iterator</a>
+  requires the <tt>reference</tt> type to be <tt>value_type&amp;</tt>,
+  whereas MultiPassInputIterator is like <a href=
+  "http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a> in that
+  the <tt>reference</tt> type merely has to be convertible to
+  <tt>value_type</tt>.</p>
+
+  <h3>Design Notes</h3>
+
+  <p>comments by Valentin Bonnard:</p>
+
+  <p>I think that introducing Multi-Pass Input Iterator isn't the right
+  solution. Do you also want to define Multi-Pass Bidirectionnal Iterator and
+  Multi-Pass Random Access Iterator ? I don't, definitly. It only confuses
+  the issue. The problem lies into the existing hierarchy of iterators, which
+  mixes movabillity, modifiabillity and lvalue-ness, and these are clearly
+  independant.</p>
+
+  <p>The terms Forward, Bidirectionnal and Random Access are about
+  movabillity and shouldn't be used to mean anything else. In a completly
+  orthogonal way, iterators can be immutable, mutable, or neither. Lvalueness
+  of iterators is also orthogonal with immutabillity. With these clean
+  concepts, your Multi-Pass Input Iterator is just called a Forward
+  Iterator.</p>
+
+  <p>Other translations are:<br>
+  std::Forward Iterator -&gt; ForwardIterator &amp; Lvalue Iterator<br>
+  std::Bidirectionnal Iterator -&gt; Bidirectionnal Iterator &amp; Lvalue
+  Iterator<br>
+  std::Random Access Iterator -&gt; Random Access Iterator &amp; Lvalue
+  Iterator<br></p>
+
+  <p>Note that in practice the only operation not allowed on my Forward
+  Iterator which is allowed on std::Forward Iterator is <tt>&amp;*it</tt>. I
+  think that <tt>&amp;*</tt> is rarely needed in generic code.</p>
+
+  <p>reply by Jeremy Siek:</p>
+
+  <p>The above analysis by Valentin is right on. Of course, there is the
+  problem with backward compatibility. The current STL implementations are
+  based on the old definition of Forward Iterator. The right course of action
+  is to get Forward Iterator, etc. changed in the C++ standard. Once that is
+  done we can drop Multi-Pass Input Iterator.<br></p>
+  <hr>
+
+  <p><a href="http://validator.w3.org/check?uri=referer"><img border="0" src=
+  "../../doc/images/valid-html401.png" alt="Valid HTML 4.01 Transitional"
+  height="31" width="88"></a></p>
+
+  <p>Revised 
+  <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan -->05
+  December, 2006<!--webbot bot="Timestamp" endspan i-checksum="38516" --></p>
+
+  <table summary="">
+    <tr valign="top">
+      <td nowrap><i>Copyright &copy; 2000</i></td>
+
+      <td><i><a href="http://www.lsc.nd.edu/~jsiek">Jeremy Siek</a>, Univ.of
+      Notre Dame (<a href=
+      "mailto:jsiek@lsc.nd.edu">jsiek@lsc.nd.edu</a>)</i></td>
+    </tr>
+  </table>
+
+  <p><i>Distributed under the Boost Software License, Version 1.0. (See
+  accompanying file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or
+  copy at <a href=
+  "http://www.boost.org/LICENSE_1_0.txt">http://www.boost.org/LICENSE_1_0.txt</a>)</i></p>
+</body>
+</html>

OptionalPointee.html

@@ -0,0 +1,159 @@
+<HTML>
+<Head>
+<Title>OptionalPointee Concept</Title>
+</HEAD>
+<BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" 
+        ALINK="#ff0000"> 
+<IMG SRC="../../boost.png" 
+     ALT="C++ Boost" width="277" height="86"> 
+<!--end header-->
+<BR Clear>
+<H1>Concept: OptionalPointee</H1>
+
+<h3>Description</h3>
+A type is a model of <i>OptionalPointee</i> if it points to (or refers to) a value 
+that may not exist. That is, if it has a <b>pointee</b> which might be <b>valid</b>
+(existent) or <b>invalid</b> (inexistent); and it is possible to test whether the 
+pointee is valid or not.
+This model does <u>not</u> imply pointer semantics: i.e., it does not imply shallow copy nor
+aliasing.
+<h3>Notation</h3>
+<Table>
+  <TR>
+    <TD VAlign=top> <tt>T</tt> </TD>
+    <TD VAlign=top> is a type that is a model of OptionalPointee</TD>
+  </TR>
+  <TR>
+    <TD VAlign=top> <tt>t</tt> </TD>
+    <TD VAlign=top> is an object of type <tt>T</tt> or possibly <tt>const T</tt></TD>
+  </tr>
+</table>
+<h3>Definitions</h3>
+<h3>Valid expressions</h3>
+<Table border>
+  <TR>
+    <TH> Name </TH>
+    <TH> Expression </TH>
+    <TH> Return type </TH>
+    <TH> Semantics </TH>
+  </TR>
+  <TR>
+    <TD VAlign=top>Value Access</TD>
+    <TD VAlign=top>&nbsp;<tt>*t</tt></TD>
+    <TD VAlign=top>&nbsp;<tt>T&amp;</tt></TD>
+    <TD VAlign=top>If the pointee is valid returns a reference to
+      the pointee.<br>
+      If the pointee is invalid the result is <i>undefined</i>.</TD>
+    <TD VAlign=top> </TD>
+  </TR>
+  <TR>
+    <TD VAlign=top>Value Access</TD>
+    <TD VAlign=top>&nbsp;<tt>t-><i>xyz</i></tt></TD>
+    <TD VAlign=top>&nbsp;<tt>T*</tt></TD>
+    <TD VAlign=top>If the pointee is valid returns a builtin pointer to the pointee.<br>
+      If the pointee is invalid the result is <i>undefined</i> (It might not even return NULL).<br>
+    </TD>
+    <TD VAlign=top> </TD>
+  </TR>
+  <TR>
+    <TD VAlign=top>Validity Test</TD>
+    <TD VAlign=top>&nbsp;<tt>bool(t)</tt></TD>
+    <TD VAlign=top>&nbsp;bool </TD>
+    <TD VAlign=top>If the pointee is valid returns true.<br>
+      If the pointee is invalid returns false.</TD>
+    <TD VAlign=top></TD>
+  </TR>
+  <TR>
+    <TD VAlign=top>Invalidity Test</TD>
+    <TD VAlign=top>&nbsp;<tt>!t</tt></TD>
+    <TD VAlign=top>&nbsp;bool </TD>
+    <TD VAlign=top>If the pointee is valid returns false.<br>
+      If the pointee is invalid returns true.</TD>
+    <TD VAlign=top></TD>
+  </TR>
+</table>
+
+
+<h3>Models</h3>
+
+<UL>
+  <LI><tt>pointers, both builtin and smart.</tt>
+  <LI><tt>boost::optional&lt;&gt;</tt>
+</UL>
+
+<HR>
+<h3>OptionalPointee and relational operations</h3>
+<p>This concept does not define any particular semantic for relational operations, therefore,
+a type which models this concept might have either shallow or deep relational semantics.<br>
+For instance, pointers, which are models of OptionalPointee, have shallow relational operators:
+comparisons of pointers do not involve comparisons of pointees.
+This makes sense for pointers because they have shallow copy semantics.<br>
+But boost::optional&lt;T&gt;, on the other hand, which is also a model of OptionalPointee, has
+deep-copy and deep-relational semantics.<br>
+If generic code is written for this concept, it is important not to use relational
+operators directly because the semantics might be different depending on the actual type.<br>
+Still, the concept itsef can be used to define <i>deep</i> relational tests that can
+be used in generic code with any type which models OptionalPointee:</p>
+<a name="equal"></a>
+<p><u>Equivalence relation:</u></p>
+<pre>template&lt;class OptionalPointee&gt;
+inline
+bool equal_pointees ( OptionalPointee const&amp; x, OptionalPointee const&amp; y )
+{
+  return (!x) != (!y) ? false : ( !x ? true : (*x) == (*y) ) ;
+}
+template&lt;class OptionalPointee&gt;
+struct equal_pointees_t : std::binary_function&lt;OptionalPointee,OptionalPointee,bool&gt;
+{
+  bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
+    { return equal_pointees(x,y) ; }
+} ;
+</pre>
+<p>The preceding generic function and function object have the following semantics:<br>
+If both <b>x</b> and <b>y</b> have valid pointees, it compares values via <code>(*x == *y)</code>.<br>
+If only one has a valid pointee, returns <code>false</code>.<br>
+If both have invalid pointees, returns <code>true</code>.</p>
+<a name="less"></a>
+<p><u>Less-than relation:</u></p>
+<pre>template&lt;class OptionalPointee&gt;
+inline
+bool less_pointees ( OptionalPointee const&amp; x, OptionalPointee const&amp; y )
+{
+  return !y ? false : ( !x ? true : (*x) < (*y) ) ;
+}
+template&lt;class OptionalPointee&gt;
+struct less_pointees_t : std::binary_function&lt;OptionalPointee,OptionalPointee,bool&gt;
+{
+  bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
+    { return less_pointees(x,y) ; }
+} ;
+</pre>
+<p>The preceding generic function and function object have the following semantics:<br>
+If <b>y</b> has an invalid pointee, returns <code>false</code>.<br>
+Else, if <b>x</b> has an invalid pointee, returns <code>true</code>.<br>
+Else, ( <b>x</b> and <b>y</b> have valid pointees), compares values via <code>(*x &lt; 
+*y).</code></p>
+<p><br>
+All these functions and function 
+objects are is implemented in <a href="../../boost/utility/compare_pointees.hpp">compare_pointees.hpp</a></p>
+<p>Notice that OptionalPointee does not imply aliasing (and optional&lt;&gt; for instance does not alias);
+so direct usage of relational operators with the implied aliasing of shallow semantics
+-as with pointers- should not be used with generic code written for this concept.</p>
+
+<h3>Acknowledgements</h3>
+<p>Based on the original concept developed by Augustus Saunders.
+
+<br>
+</p>
+<HR>
+<TABLE>
+<TR valign=top>
+<TD nowrap>Copyright &copy 2003</TD><TD>
+<A HREF="mailto:fernando_cacciola@hotmail.com">Fernando Cacciola</A>
+</TD></TR></TABLE>
+
+<p>Distributed under the Boost Software License, Version 1.0. See
+<a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a></p>
+
+</BODY>
+</HTML>

README.md

@@ -0,0 +1,26 @@
+# ![Boost.Utility](doc/logo.png)
+
+Boost.Utility, part of collection of the [Boost C++ Libraries](https://github.com/boostorg), provides a number of smaller components, too small to be called libraries in their own right. See the documentation for the list of components.
+
+### Directories
+
+* **doc** - Documentation sources
+* **include** - Interface headers of Boost.Utility
+* **test** - Boost.Utility unit tests
+
+### More information
+
+* [Documentation](https://boost.org/libs/utility)
+* [Report bugs](https://github.com/boostorg/utility/issues/new). Be sure to mention Boost version, Boost.Utility component, platform and compiler you're using. A small compilable code sample to reproduce the problem is always good as well.
+* Submit your patches as pull requests against **develop** branch. Note that by submitting patches you agree to license your modifications under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).
+
+### Build status
+
+Branch          | GitHub Actions | AppVeyor | Test Matrix | Dependencies |
+:-------------: | -------------- | -------- | ----------- | ------------ |
+[`master`](https://github.com/boostorg/utility/tree/master) | [![GitHub Actions](https://github.com/boostorg/utility/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/utility/actions?query=branch%3Amaster) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/g09ehuy2o6aq42th/branch/master?svg=true)](https://ci.appveyor.com/project/Lastique/utility/branch/master) | [![Tests](https://img.shields.io/badge/matrix-master-brightgreen.svg)](http://www.boost.org/development/tests/master/developer/utility.html) | [![Dependencies](https://img.shields.io/badge/deps-master-brightgreen.svg)](https://pdimov.github.io/boostdep-report/master/utility.html)
+[`develop`](https://github.com/boostorg/utility/tree/develop) | [![GitHub Actions](https://github.com/boostorg/utility/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/utility/actions?query=branch%3Adevelop) | [![AppVeyor](https://ci.appveyor.com/api/projects/status/g09ehuy2o6aq42th/branch/develop?svg=true)](https://ci.appveyor.com/project/Lastique/utility/branch/develop) | [![Tests](https://img.shields.io/badge/matrix-develop-brightgreen.svg)](http://www.boost.org/development/tests/develop/developer/utility.html) | [![Dependencies](https://img.shields.io/badge/deps-develop-brightgreen.svg)](https://pdimov.github.io/boostdep-report/develop/utility.html)
+
+### License
+
+Distributed under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt).

algo_opt_examples.cpp

@@ -1,423 +0,0 @@
-
-/*
- *
- * Copyright (c) 1999
- * Dr John Maddock
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation.  Dr John Maddock makes no representations
- * about the suitability of this software for any purpose.
- * It is provided "as is" without express or implied warranty.
- *
- * This file provides some example of type_traits usage -
- * by "optimising" various algorithms:
- *
- * opt::copy - optimised for trivial copy (cf std::copy)
- * opt::fill - optimised for trivial copy/small types (cf std::fill)
- * opt::destroy_array - an example of optimisation based upon omitted destructor calls
- * opt::iter_swap - uses type_traits to determine whether the iterator is a proxy
- *                  in which case it uses a "safe" approach, otherwise calls swap
- *                  on the assumption that swap may be specialised for the pointed-to type.
- *
- */
-
-/* Release notes:
-   23rd July 2000:
-      Added explicit failure for broken compilers that don't support these examples.
-      Fixed broken gcc support (broken using directive).
-      Reordered tests slightly.
-*/
-
-#include <iostream>
-#include <typeinfo>
-#include <algorithm>
-#include <iterator>
-#include <vector>
-#include <memory>
-
-#include <boost/timer.hpp>
-#include <boost/type_traits.hpp>
-#include <boost/call_traits.hpp>
-
-using std::cout;
-using std::endl;
-using std::cin;
-
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-#error "Sorry, without template partial specialisation support there isn't anything to test here..."
-#endif
-
-namespace opt{
-
-//
-// algorithm destroy_arry:
-// The reverse of std::unitialized_copy, takes a block of
-// unitialized memory and calls destructors on all objects therein.
-//
-
-namespace detail{
-
-template <bool>
-struct array_destroyer
-{
-   template <class T>
-   static void destroy_array(T* i, T* j){ do_destroy_array(i, j); }
-};
-
-template <>
-struct array_destroyer<true>
-{
-   template <class T>
-   static void destroy_array(T*, T*){}
-};
-
-template <class T>
-void do_destroy_array(T* first, T* last)
-{
-   while(first != last)
-   {
-      first->~T();
-      ++first;
-   }
-}
-
-}; // namespace detail
-
-template <class T>
-inline void destroy_array(T* p1, T* p2)
-{
-   detail::array_destroyer<boost::has_trivial_destructor<T>::value>::destroy_array(p1, p2);
-}
-
-//
-// unoptimised versions of destroy_array:
-//
-template <class T>
-void destroy_array1(T* first, T* last)
-{
-   while(first != last)
-   {
-      first->~T();
-      ++first;
-   }
-}
-template <class T>
-void destroy_array2(T* first, T* last)
-{
-   for(; first != last; ++first) first->~T();
-}
-
-
-//
-// opt::copy
-// same semantics as std::copy
-// calls memcpy where appropiate.
-//
-
-namespace detail{
-
-template <bool b>
-struct copier
-{
-   template<typename I1, typename I2>
-   static I2 do_copy(I1 first, I1 last, I2 out);
-};
-
-template <bool b>
-template<typename I1, typename I2>
-I2 copier<b>::do_copy(I1 first, I1 last, I2 out)
-{
-   while(first != last)
-   {
-      *out = *first;
-      ++out;
-      ++first;
-   }
-   return out;
-}
-
-template <>
-struct copier<true>
-{
-   template<typename I1, typename I2>
-   static I2* do_copy(I1* first, I1* last, I2* out)
-   {
-      memcpy(out, first, (last-first)*sizeof(I2));
-      return out+(last-first);
-   }
-};
-
-
-}
-
-template<typename I1, typename I2>
-inline I2 copy(I1 first, I1 last, I2 out)
-{
-   typedef typename boost::remove_cv<typename std::iterator_traits<I1>::value_type>::type v1_t;
-   typedef typename boost::remove_cv<typename std::iterator_traits<I2>::value_type>::type v2_t;
-   enum{ can_opt = boost::is_same<v1_t, v2_t>::value
-                   && boost::is_pointer<I1>::value
-                   && boost::is_pointer<I2>::value
-                   && boost::has_trivial_assign<v1_t>::value };
-   return detail::copier<can_opt>::do_copy(first, last, out);
-}
-
-//
-// fill
-// same as std::fill, uses memset where appropriate, along with call_traits
-// to "optimise" parameter passing.
-//
-namespace detail{
-
-template <bool opt>
-struct filler
-{
-   template <typename I, typename T>
-   static void do_fill(I first, I last, typename boost::call_traits<T>::param_type val);
- };
-
-template <bool b>
-template <typename I, typename T>
-void filler<b>::do_fill(I first, I last, typename boost::call_traits<T>::param_type val)
-{
-   while(first != last)
-   {
-      *first = val;
-      ++first;
-   }
-}
-
-template <>
-struct filler<true>
-{
-   template <typename I, typename T>
-   static void do_fill(I first, I last, T val)
-   {
-      memset(first, val, last-first);
-   }
-};
-
-}
-
-template <class I, class T>
-inline void fill(I first, I last, const T& val)
-{
-   enum{ can_opt = boost::is_pointer<I>::value
-                   && boost::is_arithmetic<T>::value
-                   && (sizeof(T) == 1) };
-   typedef detail::filler<can_opt> filler_t;
-   filler_t::template do_fill<I,T>(first, last, val);
-}
-
-//
-// iter_swap:
-// tests whether iterator is a proxying iterator or not, and
-// uses optimal form accordingly:
-//
-namespace detail{
-
-template <bool b>
-struct swapper
-{
-   template <typename I>
-   static void do_swap(I one, I two)
-   {
-      typedef typename std::iterator_traits<I>::value_type v_t;
-      v_t v = *one;
-      *one = *two;
-      *two = v;
-   }
-};
-
-#ifdef __GNUC__
-using std::swap;
-#endif
-
-template <>
-struct swapper<true>
-{
-   template <typename I>
-   static void do_swap(I one, I two)
-   {
-      using std::swap;
-      swap(*one, *two);
-   }
-};
-
-}
-
-template <typename I1, typename I2>
-inline void iter_swap(I1 one, I2 two)
-{
-   typedef typename std::iterator_traits<I1>::reference r1_t;
-   typedef typename std::iterator_traits<I2>::reference r2_t;
-   enum{ can_opt = boost::is_reference<r1_t>::value && boost::is_reference<r2_t>::value && boost::is_same<r1_t, r2_t>::value };
-   detail::swapper<can_opt>::do_swap(one, two);
-}
-
-
-};   // namespace opt
-
-//
-// define some global data:
-//
-const int array_size = 1000;
-int i_array[array_size] = {0,};
-const int ci_array[array_size] = {0,};
-char c_array[array_size] = {0,};
-const char cc_array[array_size] = { 0,};
-
-const int iter_count = 1000000;
-
-
-int main()
-{
-   //
-   // test destroy_array,
-   // compare destruction time of an array of ints
-   // with unoptimised form.
-   //
-   cout << "Measuring times in micro-seconds per 1000 elements processed" << endl << endl;
-   cout << "testing destroy_array...\n"
-    "[Some compilers may be able to optimise the \"unoptimised\"\n versions as well as type_traits does.]" << endl;
-   /*cache load*/ opt::destroy_array(i_array, i_array + array_size);
-   boost::timer t;
-   double result;
-   int i;
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::destroy_array(i_array, i_array + array_size);
-   }
-   result = t.elapsed();
-   cout << "destroy_array<int>: " << result << endl;
-   /*cache load*/ opt::destroy_array1(i_array, i_array + array_size);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::destroy_array1(i_array, i_array + array_size);
-   }
-   result = t.elapsed();
-   cout << "destroy_array<int>(unoptimised#1): " << result << endl;
-   /*cache load*/ opt::destroy_array2(i_array, i_array + array_size);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::destroy_array2(i_array, i_array + array_size);
-   }
-   result = t.elapsed();
-   cout << "destroy_array<int>(unoptimised#2): " << result << endl << endl;
-
-   cout << "testing fill(char)...\n"
-   "[Some standard library versions may already perform this optimisation.]" << endl;
-   /*cache load*/ opt::fill<char*, char>(c_array, c_array + array_size, (char)3);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::fill<char*, char>(c_array, c_array + array_size, (char)3);
-   }
-   result = t.elapsed();
-   cout << "opt::fill<char*, char>: " << result << endl;
-   /*cache load*/ std::fill(c_array, c_array + array_size, (char)3);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      std::fill(c_array, c_array + array_size, (char)3);
-   }
-   result = t.elapsed();
-   cout << "std::fill<char*, char>: " << result << endl << endl;
-
-   cout << "testing fill(int)...\n"
-   "[Tests the effect of call_traits pass-by-value optimisation -\nthe value of this optimisation may depend upon hardware characteristics.]" << endl;
-   /*cache load*/ opt::fill<int*, int>(i_array, i_array + array_size, 3);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::fill<int*, int>(i_array, i_array + array_size, 3);
-   }
-   result = t.elapsed();
-   cout << "opt::fill<int*, int>: " << result << endl;
-   /*cache load*/ std::fill(i_array, i_array + array_size, 3);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      std::fill(i_array, i_array + array_size, 3);
-   }
-   result = t.elapsed();
-   cout << "std::fill<int*, int>: " << result << endl << endl;
-
-   cout << "testing copy...\n"
-   "[Some standard library versions may already perform this optimisation.]" << endl;
-   /*cache load*/ opt::copy<const int*, int*>(ci_array, ci_array + array_size, i_array);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::copy<const int*, int*>(ci_array, ci_array + array_size, i_array);
-   }
-   result = t.elapsed();
-   cout << "opt::copy<const int*, int*>: " << result << endl;
-   /*cache load*/ std::copy<const int*, int*>(ci_array, ci_array + array_size, i_array);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      std::copy<const int*, int*>(ci_array, ci_array + array_size, i_array);
-   }
-   result = t.elapsed();
-   cout << "std::copy<const int*, int*>: " << result << endl;
-   /*cache load*/ opt::detail::copier<false>::template do_copy<const int*, int*>(ci_array, ci_array + array_size, i_array);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::detail::copier<false>::template do_copy<const int*, int*>(ci_array, ci_array + array_size, i_array);
-   }
-   result = t.elapsed();
-   cout << "standard \"unoptimised\" copy: " << result << endl << endl;
-
-   /*cache load*/ opt::copy<const char*, char*>(cc_array, cc_array + array_size, c_array);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::copy<const char*, char*>(cc_array, cc_array + array_size, c_array);
-   }
-   result = t.elapsed();
-   cout << "opt::copy<const char*, char*>: " << result << endl;
-   /*cache load*/ std::copy<const char*, char*>(cc_array, cc_array + array_size, c_array);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      std::copy<const char*, char*>(cc_array, cc_array + array_size, c_array);
-   }
-   result = t.elapsed();
-   cout << "std::copy<const char*, char*>: " << result << endl;
-   /*cache load*/ opt::detail::copier<false>::template do_copy<const char*, char*>(cc_array, cc_array + array_size, c_array);
-   t.restart();
-   for(i = 0; i < iter_count; ++i)
-   {
-      opt::detail::copier<false>::template do_copy<const char*, char*>(cc_array, cc_array + array_size, c_array);
-   }
-   result = t.elapsed();
-   cout << "standard \"unoptimised\" copy: " << result << endl << endl;
-
-
-   //
-   // testing iter_swap
-   // really just a check that it does in fact compile...
-   std::vector<int> v1;
-   v1.push_back(0);
-   v1.push_back(1);
-   std::vector<bool> v2;
-   v2.push_back(0);
-   v2.push_back(1);
-   opt::iter_swap(v1.begin(), v1.begin()+1);
-   opt::iter_swap(v2.begin(), v2.begin()+1);
-
-   cout << "Press any key to exit...";
-   cin.get();
-}
-
-
-
-
-

appveyor.yml

@@ -0,0 +1,88 @@
+# Copyright 2016-2019 Peter Dimov
+# Copyright 2019, 2022 Andrey Semashev
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+version: 1.0.{build}-{branch}
+
+shallow_clone: true
+
+branches:
+  only:
+    - master
+    - develop
+    - /feature\/.*/
+
+environment:
+  matrix:
+    - TOOLSET: msvc-14.0
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: msvc-14.1
+      CXXSTD: 14,17,latest
+      ADDRMD: 32,64
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    - TOOLSET: msvc-14.2
+      ADDRMD: 32,64
+      CXXSTD: 14,17,20,latest
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: msvc-14.3
+      ADDRMD: 32,64
+      CXXSTD: 14,17,20,latest
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
+    - TOOLSET: clang-win
+      ADDRMD: 32
+      CXXSTD: 14,17,latest
+      ENV_SCRIPT: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars32.bat
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: clang-win
+      ADDRMD: 64
+      CXXSTD: 14,17,latest
+      ENV_SCRIPT: C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+    - TOOLSET: gcc
+      CXXSTD: 11,14,1z
+      ADDPATH: C:\cygwin\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,1z
+      ADDPATH: C:\cygwin64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,1z
+      ADDPATH: C:\mingw\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,1z
+      ADDPATH: C:\mingw-w64\x86_64-6.3.0-posix-seh-rt_v5-rev1\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,17
+      ADDPATH: C:\mingw-w64\x86_64-7.3.0-posix-seh-rt_v5-rev0\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+    - TOOLSET: gcc
+      CXXSTD: 11,14,17,2a
+      ADDPATH: C:\mingw-w64\x86_64-8.1.0-posix-seh-rt_v6-rev0\mingw64\bin;
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+
+install:
+  - set GIT_FETCH_JOBS=8
+  - set BOOST_BRANCH=develop
+  - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
+  - cd ..
+  - git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+  - cd boost-root
+  - git submodule update --init tools/boostdep
+  - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\utility
+  - python tools/boostdep/depinst/depinst.py %DEPINST_ARG_INCLUDE_EXAMPLES% --git_args "--jobs %GIT_FETCH_JOBS%" utility
+  - cmd /c bootstrap
+  - b2 headers
+
+build: off
+
+test_script:
+  - PATH=%ADDPATH%%PATH%
+  - if not "%ENV_SCRIPT%" == "" call "%ENV_SCRIPT%"
+  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
+  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
+  - b2 -j %NUMBER_OF_PROCESSORS% libs/utility/test toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release

build.jam

@@ -0,0 +1,29 @@
+# Copyright René Ferdinand Rivera Morell 2023-2024
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+require-b2 5.2 ;
+
+constant boost_dependencies :
+    /boost/assert//boost_assert
+    /boost/config//boost_config
+    /boost/core//boost_core
+    /boost/io//boost_io
+    /boost/preprocessor//boost_preprocessor
+    /boost/throw_exception//boost_throw_exception
+    /boost/type_traits//boost_type_traits ;
+
+project /boost/utility
+    : common-requirements
+        <include>include
+    ;
+
+explicit
+    [ alias boost_utility : : : : <library>$(boost_dependencies) ]
+    [ alias all : boost_utility test ]
+    ;
+
+call-if : boost-library utility
+    ;
+

c++_type_traits.htm

@@ -1,489 +0,0 @@
-<html>
-
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
-<meta name="ProgId" content="FrontPage.Editor.Document">
-<title>C++ Type traits</title>
-</head>
-
-<body bgcolor="#FFFFFF" link="#0000FF" vlink="#800080">
-
-<h2 align="center">C++ Type traits</h2>
-<p align="center"><em>by John Maddock and Steve Cleary</em></p>
-<p align="center"><em>This is a draft of an article that will appear in a future
-issue of </em><a href="http://www.ddj.com"><em>Dr Dobb's Journal</em></a></p>
-<p>Generic programming (writing code which works with any data type meeting a
-set of requirements) has become the method of choice for providing reusable
-code. However, there are times in generic programming when &quot;generic&quot;
-just isn't good enough - sometimes the differences between types are too large
-for an efficient generic implementation. This is when the traits technique
-becomes important - by encapsulating those properties that need to be considered
-on a type by type basis inside a traits class, we can minimise the amount of
-code that has to differ from one type to another, and maximise the amount of
-generic code.</p>
-<p>Consider an example: when working with character strings, one common
-operation is to determine the length of a null terminated string. Clearly it's
-possible to write generic code that can do this, but it turns out that there are
-much more efficient methods available: for example, the C library functions <font size="2" face="Courier New">strlen</font>
-and <font size="2" face="Courier New">wcslen</font> are usually written in
-assembler, and with suitable hardware support can be considerably faster than a
-generic version written in C++. The authors of the C++ standard library realised
-this, and abstracted the properties of <font size="2" face="Courier New">char</font>
-and <font size="2" face="Courier New">wchar_t</font> into the class <font size="2" face="Courier New">char_traits</font>.
-Generic code that works with character strings can simply use <font size="2" face="Courier New">char_traits&lt;&gt;::length</font>
-to determine the length of a null terminated string, safe in the knowledge that
-specialisations of <font size="2" face="Courier New">char_traits</font> will use
-the most appropriate method available to them.</p>
-<h4>Type traits</h4>
-<p>Class <font size="2" face="Courier New">char_traits</font> is a classic
-example of a collection of type specific properties wrapped up in a single class
-- what Nathan Myers termed a <i>baggage class</i>[1]. In the Boost type-traits
-library, we[2] have written a set of very specific traits classes, each of which
-encapsulate a single trait from the C++ type system; for example, is a type a
-pointer or a reference type? Or does a type have a trivial constructor, or a
-const-qualifier? The type-traits classes share a unified design: each class has
-a single member <i>value</i>, a compile-time constant that is true if the type
-has the specified property, and false otherwise. As we will show, these classes
-can be used in generic programming to determine the properties of a given type
-and introduce optimisations that are appropriate for that case.</p>
-<p>The type-traits library also contains a set of classes that perform a
-specific transformation on a type; for example, they can remove a top-level
-const or volatile qualifier from a type. Each class that performs a
-transformation defines a single typedef-member <i>type</i> that is the result of
-the transformation. All of the type-traits classes are defined inside namespace <font size="2" face="Courier New">boost</font>;
-for brevity, namespace-qualification is omitted in most of the code samples
-given.</p>
-<h4>Implementation</h4>
-<p>There are far too many separate classes contained in the type-traits library
-to give a full implementation here - see the source code in the Boost library
-for the full details - however, most of the implementation is fairly repetitive
-anyway, so here we will just give you a flavour for how some of the classes are
-implemented. Beginning with possibly the simplest class in the library, is_void&lt;T&gt;
-has a member <i>value</i> that is true only if T is void.</p>
-<pre>template &lt;typename T&gt; 
-struct is_void
-{ static const bool value = false; };
-
-template &lt;&gt; 
-struct is_void&lt;void&gt;
-{ static const bool value = true; };</pre>
-<p>Here we define a primary version of the template class <font size="2" face="Courier New">is_void</font>,
-and provide a full-specialisation when T is void. While full specialisation of a
-template class is an important technique, sometimes we need a solution that is
-halfway between a fully generic solution, and a full specialisation. This is
-exactly the situation for which the standards committee defined partial
-template-class specialisation. As an example, consider the class
-boost::is_pointer&lt;T&gt;: here we needed a primary version that handles all
-the cases where T is not a pointer, and a partial specialisation to handle all
-the cases where T is a pointer:</p>
-<pre>template &lt;typename T&gt; 
-struct is_pointer 
-{ static const bool value = false; };
-
-template &lt;typename T&gt; 
-struct is_pointer&lt;T*&gt; 
-{ static const bool value = true; };</pre>
-<p>The syntax for partial specialisation is somewhat arcane and could easily
-occupy an article in its own right; like full specialisation, in order to write
-a partial specialisation for a class, you must first declare the primary
-template. The partial specialisation contains an extra &lt;<EFBFBD>&gt; after the
-class name that contains the partial specialisation parameters; these define the
-types that will bind to that partial specialisation rather than the default
-template. The rules for what can appear in a partial specialisation are somewhat
-convoluted, but as a rule of thumb if you can legally write two function
-overloads of the form:</p>
-<pre>void foo(T);
-void foo(U);</pre>
-<p>Then you can also write a partial specialisation of the form:</p>
-<pre>template &lt;typename T&gt;
-class c{ /*details*/ };
-
-template &lt;typename T&gt;
-
-class c&lt;U&gt;{ /*details*/ };</pre>
-<p>This rule is by no means foolproof, but it is reasonably simple to remember
-and close enough to the actual rule to be useful for everyday use.</p>
-<p>As a more complex example of partial specialisation consider the class
-remove_bounds&lt;T&gt;. This class defines a single typedef-member <i>type</i>
-that is the same type as T but with any top-level array bounds removed; this is
-an example of a traits class that performs a transformation on a type:</p>
-<pre>template &lt;typename T&gt; 
-struct remove_bounds
-{ typedef T type; };
-
-template &lt;typename T, std::size_t N&gt; 
-struct remove_bounds&lt;T[N]&gt;
-{ typedef T type; };</pre>
-<p>The aim of remove_bounds is this: imagine a generic algorithm that is passed
-an array type as a template parameter, <font size="2" face="Courier New">remove_bounds</font>
-provides a means of determining the underlying type of the array. For example <code>remove_bounds&lt;int[4][5]&gt;::type</code>
-would evaluate to the type <code>int[5]</code>. This example also shows that the
-number of template parameters in a partial specialisation does not have to match
-the number in the default template. However, the number of parameters that
-appear after the class name do have to match the number and type of the
-parameters in the default template.</p>
-<h4>Optimised copy</h4>
-<p>As an example of how the type traits classes can be used, consider the
-standard library algorithm copy:</p>
-<pre>template&lt;typename Iter1, typename Iter2&gt;
-Iter2 copy(Iter1 first, Iter1 last, Iter2 out);</pre>
-<p>Obviously, there's no problem writing a generic version of copy that works
-for all iterator types Iter1 and Iter2; however, there are some circumstances
-when the copy operation can best be performed by a call to <font size="2" face="Courier New">memcpy</font>.
-In order to implement copy in terms of <font size="2" face="Courier New">memcpy</font>
-all of the following conditions need to be met:</p>
-<ul>
-  <li>Both of the iterator types Iter1 and Iter2 must be pointers.</li>
-  <li>Both Iter1 and Iter2 must point to the same type - excluding <font size="2" face="Courier New">const</font>
-    and <font size="2" face="Courier New">volatile</font>-qualifiers.</li>
-  <li>The type pointed to by Iter1 must have a trivial assignment operator.</li>
-</ul>
-<p>By trivial assignment operator we mean that the type is either a scalar
-type[3] or:</p>
-<ul>
-  <li>The type has no user defined assignment operator.</li>
-  <li>The type does not have any data members that are references.</li>
-  <li>All base classes, and all data member objects must have trivial assignment
-    operators.</li>
-</ul>
-<p>If all these conditions are met then a type can be copied using <font size="2" face="Courier New">memcpy</font>
-rather than using a compiler generated assignment operator. The type-traits
-library provides a class <i>has_trivial_assign</i>, such that <code>has_trivial_assign&lt;T&gt;::value</code>
-is true only if T has a trivial assignment operator. This class &quot;just
-works&quot; for scalar types, but has to be explicitly specialised for
-class/struct types that also happen to have a trivial assignment operator. In
-other words if <i>has_trivial_assign</i> gives the wrong answer, it will give
-the &quot;safe&quot; wrong answer - that trivial assignment is not allowable.</p>
-<p>The code for an optimised version of copy that uses <font size="2" face="Courier New">memcpy</font>
-where appropriate is given in listing 1. The code begins by defining a template
-class <i>copier</i>, that takes a single Boolean template parameter, and has a
-static template member function <font size="2" face="Courier New">do_copy</font>
-which performs the generic version of <font size="2">copy</font> (in other words
-the &quot;slow but safe version&quot;). Following that there is a specialisation
-for <i>copier&lt;true&gt;</i>: again this defines a static template member
-function <font size="2" face="Courier New">do_copy</font>, but this version uses
-memcpy to perform an &quot;optimised&quot; copy.</p>
-<p>In order to complete the implementation, what we need now is a version of
-copy, that calls <code>copier&lt;true&gt;::do_copy</code> if it is safe to use <font size="2" face="Courier New">memcpy</font>,
-and otherwise calls <code>copier&lt;false&gt;::do_copy</code> to do a
-&quot;generic&quot; copy. This is what the version in listing 1 does. To
-understand how the code works look at the code for <font size="2" face="Courier New">copy</font>
-and consider first the two typedefs <i>v1_t</i> and <i>v2_t</i>. These use <code>std::iterator_traits&lt;Iter1&gt;::value_type</code>
-to determine what type the two iterators point to, and then feed the result into
-another type-traits class <i>remove_cv</i> that removes the top-level
-const-volatile-qualifiers: this will allow copy to compare the two types without
-regard to const- or volatile-qualifiers. Next, <font size="2" face="Courier New">copy</font>
-declares an enumerated value <i>can_opt</i> that will become the template
-parameter to copier - declaring this here as a constant is really just a
-convenience - the value could be passed directly to class <font size="2" face="Courier New">copier</font>.
-The value of <i>can_opt</i> is computed by verifying that all of the following
-are true:</p>
-<ul>
-  <li>first that the two iterators point to the same type by using a type-traits
-    class <i>is_same</i>.</li>
-  <li>Then that both iterators are real pointers - using the class <i>is_pointer</i>
-    described above.</li>
-  <li>Finally that the pointed-to types have a trivial assignment operator using
-    <i>has_trivial_assign</i>.</li>
-</ul>
-<p>Finally we can use the value of <i>can_opt</i> as the template argument to
-copier - this version of copy will now adapt to whatever parameters are passed
-to it, if its possible to use <font size="2" face="Courier New">memcpy</font>,
-then it will do so, otherwise it will use a generic copy.</p>
-<h4>Was it worth it?</h4>
-<p>It has often been repeated in these columns that &quot;premature optimisation
-is the root of all evil&quot; [4]. So the question must be asked: was our
-optimisation premature? To put this in perspective the timings for our version
-of copy compared a conventional generic copy[5] are shown in table 1.</p>
-<p>Clearly the optimisation makes a difference in this case; but, to be fair,
-the timings are loaded to exclude cache miss effects - without this accurate
-comparison between algorithms becomes difficult. However, perhaps we can add a
-couple of caveats to the premature optimisation rule:</p>
-<ul>
-  <li>If you use the right algorithm for the job in the first place then
-    optimisation will not be required; in some cases, <font size="2" face="Courier New">memcpy</font>
-    is the right algorithm.</li>
-  <li>If a component is going to be reused in many places by many people then
-    optimisations may well be worthwhile where they would not be so for a single
-    case - in other words, the likelihood that the optimisation will be
-    absolutely necessary somewhere, sometime is that much higher. Just as
-    importantly the perceived value of the stock implementation will be higher:
-    there is no point standardising an algorithm if users reject it on the
-    grounds that there are better, more heavily optimised versions available.</li>
-</ul>
-<h4>Table 1: Time taken to copy 1000 elements using copy&lt;const T*, T*&gt;
-(times in micro-seconds)</h4>
-<table border="1" cellpadding="7" cellspacing="1" width="529">
-  <tr>
-    <td valign="top" width="33%">
-      <p align="center">Version</p>
-    </td>
-    <td valign="top" width="33%">
-      <p align="center">T</p>
-    </td>
-    <td valign="top" width="33%">
-      <p align="center">Time</p>
-    </td>
-  </tr>
-  <tr>
-    <td valign="top" width="33%">&quot;Optimised&quot; copy</td>
-    <td valign="top" width="33%">char</td>
-    <td valign="top" width="33%">0.99</td>
-  </tr>
-  <tr>
-    <td valign="top" width="33%">Conventional copy</td>
-    <td valign="top" width="33%">char</td>
-    <td valign="top" width="33%">8.07</td>
-  </tr>
-  <tr>
-    <td valign="top" width="33%">&quot;Optimised&quot; copy</td>
-    <td valign="top" width="33%">int</td>
-    <td valign="top" width="33%">2.52</td>
-  </tr>
-  <tr>
-    <td valign="top" width="33%">Conventional copy</td>
-    <td valign="top" width="33%">int</td>
-    <td valign="top" width="33%">8.02</td>
-  </tr>
-</table>
-<p>&nbsp;</p>
-<h4>Pair of References</h4>
-<p>The optimised copy example shows how type traits may be used to perform
-optimisation decisions at compile-time. Another important usage of type traits
-is to allow code to compile that otherwise would not do so unless excessive
-partial specialization is used. This is possible by delegating partial
-specialization to the type traits classes. Our example for this form of usage is
-a pair that can hold references [6].</p>
-<p>First, let us examine the definition of &quot;std::pair&quot;, omitting the
-comparision operators, default constructor, and template copy constructor for
-simplicity:</p>
-<pre>template &lt;typename T1, typename T2&gt; 
-struct pair 
-{
-  typedef T1 first_type;
-  typedef T2 second_type;
-
-  T1 first;
-  T2 second;
-
-  pair(const T1 &amp; nfirst, const T2 &amp; nsecond)
-  :first(nfirst), second(nsecond) { }
-};</pre>
-<p>Now, this &quot;pair&quot; cannot hold references as it currently stands,
-because the constructor would require taking a reference to a reference, which
-is currently illegal [7]. Let us consider what the constructor's parameters
-would have to be in order to allow &quot;pair&quot; to hold non-reference types,
-references, and constant references:</p>
-<table border="1" cellpadding="7" cellspacing="1" width="638">
-  <tr>
-    <td valign="top" width="50%">Type of &quot;T1&quot;</td>
-    <td valign="top" width="50%">Type of parameter to initializing constructor</td>
-  </tr>
-  <tr>
-    <td valign="top" width="50%">
-      <pre>T</pre>
-    </td>
-    <td valign="top" width="50%">
-      <pre>const T &amp;</pre>
-    </td>
-  </tr>
-  <tr>
-    <td valign="top" width="50%">
-      <pre>T &amp;</pre>
-    </td>
-    <td valign="top" width="50%">
-      <pre>T &amp;</pre>
-    </td>
-  </tr>
-  <tr>
-    <td valign="top" width="50%">
-      <pre>const T &amp;</pre>
-    </td>
-    <td valign="top" width="50%">
-      <pre>const T &amp;</pre>
-    </td>
-  </tr>
-</table>
-<p>A little familiarity with the type traits classes allows us to construct a
-single mapping that allows us to determine the type of parameter from the type
-of the contained class. The type traits classes provide a transformation &quot;add_reference&quot;,
-which adds a reference to its type, unless it is already a reference.</p>
-<table border="1" cellpadding="7" cellspacing="1" width="580">
-  <tr>
-    <td valign="top" width="21%">Type of &quot;T1&quot;</td>
-    <td valign="top" width="27%">Type of &quot;const T1&quot;</td>
-    <td valign="top" width="53%">Type of &quot;add_reference&lt;const
-      T1&gt;::type&quot;</td>
-  </tr>
-  <tr>
-    <td valign="top" width="21%">
-      <pre>T</pre>
-    </td>
-    <td valign="top" width="27%">
-      <pre>const T</pre>
-    </td>
-    <td valign="top" width="53%">
-      <pre>const T &amp;</pre>
-    </td>
-  </tr>
-  <tr>
-    <td valign="top" width="21%">
-      <pre>T &amp;</pre>
-    </td>
-    <td valign="top" width="27%">
-      <pre>T &amp; [8]</pre>
-    </td>
-    <td valign="top" width="53%">
-      <pre>T &amp;</pre>
-    </td>
-  </tr>
-  <tr>
-    <td valign="top" width="21%">
-      <pre>const T &amp;</pre>
-    </td>
-    <td valign="top" width="27%">
-      <pre>const T &amp;</pre>
-    </td>
-    <td valign="top" width="53%">
-      <pre>const T &amp;</pre>
-    </td>
-  </tr>
-</table>
-<p>This allows us to build a primary template definition for &quot;pair&quot;
-that can contain non-reference types, reference types, and constant reference
-types:</p>
-<pre>template &lt;typename T1, typename T2&gt; 
-struct pair 
-{
-  typedef T1 first_type;
-  typedef T2 second_type;
-
-  T1 first;
-  T2 second;
-
-  pair(boost::add_reference&lt;const T1&gt;::type nfirst,
-       boost::add_reference&lt;const T2&gt;::type nsecond)
-  :first(nfirst), second(nsecond) { }
-};</pre>
-<p>Add back in the standard comparision operators, default constructor, and
-template copy constructor (which are all the same), and you have a std::pair
-that can hold reference types!</p>
-<p>This same extension <i>could</i> have been done using partial template
-specialization of &quot;pair&quot;, but to specialize &quot;pair&quot; in this
-way would require three partial specializations, plus the primary template. Type
-traits allows us to define a single primary template that adjusts itself
-auto-magically to any of these partial specializations, instead of a brute-force
-partial specialization approach. Using type traits in this fashion allows
-programmers to delegate partial specialization to the type traits classes,
-resulting in code that is easier to maintain and easier to understand.</p>
-<h4>Conclusion</h4>
-<p>We hope that in this article we have been able to give you some idea of what
-type-traits are all about. A more complete listing of the available classes are
-in the boost documentation, along with further examples using type traits.
-Templates have enabled C++ uses to take the advantage of the code reuse that
-generic programming brings; hopefully this article has shown that generic
-programming does not have to sink to the lowest common denominator, and that
-templates can be optimal as well as generic.</p>
-<h4>Acknowledgements</h4>
-<p>The authors would like to thank Beman Dawes and Howard Hinnant for their
-helpful comments when preparing this article.</p>
-<h4>References</h4>
-<ol>
-  <li>Nathan C. Myers, C++ Report, June 1995.</li>
-  <li>The type traits library is based upon contributions by Steve Cleary, Beman
-    Dawes, Howard Hinnant and John Maddock: it can be found at www.boost.org.</li>
-  <li>A scalar type is an arithmetic type (i.e. a built-in integer or floating
-    point type), an enumeration type, a pointer, a pointer to member, or a
-    const- or volatile-qualified version of one of these types.</li>
-  <li>This quote is from Donald Knuth, ACM Computing Surveys, December 1974, pg
-    268.</li>
-  <li>The test code is available as part of the boost utility library (see
-    algo_opt_examples.cpp), the code was compiled with gcc 2.95 with all
-    optimisations turned on, tests were conducted on a 400MHz Pentium II machine
-    running Microsoft Windows 98.</li>
-  <li>John Maddock and Howard Hinnant have submitted a &quot;compressed_pair&quot;
-    library to Boost, which uses a technique similar to the one described here
-    to hold references. Their pair also uses type traits to determine if any of
-    the types are empty, and will derive instead of contain to conserve space --
-    hence the name &quot;compressed&quot;.</li>
-  <li>This is actually an issue with the C++ Core Language Working Group (issue
-    #106), submitted by Bjarne Stroustrup. The tentative resolution is to allow
-    a &quot;reference to a reference to T&quot; to mean the same thing as a
-    &quot;reference to T&quot;, but only in template instantiation, in a method
-    similar to multiple cv-qualifiers.</li>
-  <li>For those of you who are wondering why this shouldn't be const-qualified,
-    remember that references are always implicitly constant (for example, you
-    can't re-assign a reference). Remember also that &quot;const T &amp;&quot;
-    is something completely different. For this reason, cv-qualifiers on
-    template type arguments that are references are ignored.</li>
-</ol>
-<h2>Listing 1</h2>
-<pre>namespace detail{
-
-template &lt;bool b&gt;
-struct copier
-{
-   template&lt;typename I1, typename I2&gt;
-   static I2 do_copy(I1 first, 
-                     I1 last, I2 out);
-};
-
-template &lt;bool b&gt;
-template&lt;typename I1, typename I2&gt;
-I2 copier&lt;b&gt;::do_copy(I1 first, 
-                      I1 last, 
-                      I2 out)
-{
-   while(first != last)
-   {
-      *out = *first;
-      ++out;
-      ++first;
-   }
-   return out;
-}
-
-template &lt;&gt;
-struct copier&lt;true&gt;
-{
-   template&lt;typename I1, typename I2&gt;
-   static I2* do_copy(I1* first, I1* last, I2* out)
-   {
-      memcpy(out, first, (last-first)*sizeof(I2));
-      return out+(last-first);
-   }
-};
-
-}
-
-template&lt;typename I1, typename I2&gt;
-inline I2 copy(I1 first, I1 last, I2 out)
-{
-   typedef typename 
-    boost::remove_cv&lt;
-     typename std::iterator_traits&lt;I1&gt;
-      ::value_type&gt;::type v1_t;
-
-   typedef typename 
-    boost::remove_cv&lt;
-     typename std::iterator_traits&lt;I2&gt;
-      ::value_type&gt;::type v2_t;
-
-   enum{ can_opt = 
-      boost::is_same&lt;v1_t, v2_t&gt;::value
-      &amp;&amp; boost::is_pointer&lt;I1&gt;::value
-      &amp;&amp; boost::is_pointer&lt;I2&gt;::value
-      &amp;&amp; boost::
-      has_trivial_assign&lt;v1_t&gt;::value 
-   };
-
-   return detail::copier&lt;can_opt&gt;::
-      do_copy(first, last, out);
-}</pre>
-<hr>
-<p><EFBFBD> Copyright John Maddock and Steve Cleary, 2000</p>
-
-</body>
-
-</html>

call_traits.htm

@@ -1,738 +1,19 @@
 <html>
-
 <head>
-<meta http-equiv="Content-Type"
-content="text/html; charset=iso-8859-1">
-<meta name="Template"
-content="C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\html.dot">
-<meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
-<title>Call Traits</title>
+   <title>Boost.CallTraits</title>
+   <meta http-equiv="refresh" content="0; URL=./doc/html/utility/utilities/call_traits.html">
 </head>
-
-<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"
-vlink="#800080">
-
-<h1><img src="../../c++boost.gif" width="276" height="86">Header
-&lt;<a href="../../boost/detail/call_traits.hpp">boost/call_traits.hpp</a>&gt;</h1>
-
-<p>All of the contents of &lt;boost/call_traits.hpp&gt; are
-defined inside namespace boost.</p>
-
-<p>The template class call_traits&lt;T&gt; encapsulates the
-&quot;best&quot; method to pass a parameter of some type T to or
-from a function, and consists of a collection of typedefs defined
-as in the table below. The purpose of call_traits is to ensure
-that problems like &quot;<a href="#refs">references to references</a>&quot;
-never occur, and that parameters are passed in the most efficient
-manner possible (see <a href="#examples">examples</a>). In each
-case if your existing practice is to use the type defined on the
-left, then replace it with the call_traits defined type on the
-right. Note that for compilers that do not support partial
-specialization, no benefit will occur from using call_traits: the
-call_traits defined types will always be the same as the existing
-practice in this case.</p>
-
-<table border="0" cellpadding="7" cellspacing="1" width="797">
-    <tr>
-        <td valign="top" width="17%" bgcolor="#008080"><p
-        align="center">Existing practice</p>
-        </td>
-        <td valign="top" width="35%" bgcolor="#008080"><p
-        align="center">call_traits equivalent</p>
-        </td>
-        <td valign="top" width="32%" bgcolor="#008080"><p
-        align="center">Description</p>
-        </td>
-        <td valign="top" width="16%" bgcolor="#008080"><p
-        align="center">Notes</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%"><p align="center">T<br>
-        (return by value)</p>
-        </td>
-        <td valign="top" width="35%"><p align="center"><code>call_traits&lt;T&gt;::value_type</code></p>
-        </td>
-        <td valign="top" width="32%">Defines a type that
-        represents the &quot;value&quot; of type T. Use this for
-        functions that return by value, or possibly for stored
-        values of type T.</td>
-        <td valign="top" width="16%"><p align="center">2</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%"><p align="center">T&amp;<br>
-        (return value)</p>
-        </td>
-        <td valign="top" width="35%"><p align="center"><code>call_traits&lt;T&gt;::reference</code></p>
-        </td>
-        <td valign="top" width="32%">Defines a type that
-        represents a reference to type T. Use for functions that
-        would normally return a T&amp;.</td>
-        <td valign="top" width="16%"><p align="center">1</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%"><p align="center">const T&amp;<br>
-        (return value)</p>
-        </td>
-        <td valign="top" width="35%"><p align="center"><code>call_traits&lt;T&gt;::const_reference</code></p>
-        </td>
-        <td valign="top" width="32%">Defines a type that
-        represents a constant reference to type T. Use for
-        functions that would normally return a const T&amp;.</td>
-        <td valign="top" width="16%"><p align="center">1</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%"><p align="center">const T&amp;<br>
-        (function parameter)</p>
-        </td>
-        <td valign="top" width="35%"><p align="center"><code>call_traits&lt;T&gt;::param_type</code></p>
-        </td>
-        <td valign="top" width="32%">Defines a type that
-        represents the &quot;best&quot; way to pass a parameter
-        of type T to a function.</td>
-        <td valign="top" width="16%"><p align="center">1,3</p>
-        </td>
-    </tr>
-</table>
-
-<p>Notes:</p>
-
-<ol>
-    <li>If T is already reference type, then call_traits is
-        defined such that <a href="#refs">references to
-        references</a> do not occur (requires partial
-        specialization).</li>
-    <li>If T is an array type, then call_traits defines <code>value_type</code>
-        as a &quot;constant pointer to type&quot; rather than an
-        &quot;array of type&quot; (requires partial
-        specialization). Note that if you are using value_type as
-        a stored value then this will result in storing a &quot;constant
-        pointer to an array&quot; rather than the array itself.
-        This may or may not be a good thing depending upon what
-        you actually need (in other words take care!).</li>
-    <li>If T is a small built in type or a pointer, then <code>param_type</code>
-        is defined as <code>T const</code>, instead of <code>T
-        const&amp;</code>. This can improve the ability of the
-        compiler to optimize loops in the body of the function if
-        they depend upon the passed parameter, the semantics of
-        the passed parameter is otherwise unchanged (requires
-        partial specialization).</li>
-</ol>
-
-<p>&nbsp;</p>
-
-<h3>Copy constructibility</h3>
-
-<p>The following table defines which call_traits types can always
-be copy-constructed from which other types, those entries marked
-with a '?' are true only if and only if T is copy constructible:</p>
-
-<table border="0" cellpadding="7" cellspacing="1" width="766">
-    <tr>
-        <td valign="top" width="17%">&nbsp;</td>
-        <td valign="top" colspan="5" width="85%"
-        bgcolor="#008080"><p align="center">To:</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#008080">From:</td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">T</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">value_type</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">reference</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">const_reference</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">param_type</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">T</td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">value_type</td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">N</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">N</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">reference</td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">const_reference</td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">N</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">N</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">param_type</td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">?</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">N</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">N</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-    </tr>
-</table>
-
-<p>&nbsp;</p>
-
-<p>If T is an assignable type the following assignments are
-possible:</p>
-
-<table border="0" cellpadding="7" cellspacing="1" width="766">
-    <tr>
-        <td valign="top" width="17%">&nbsp;</td>
-        <td valign="top" colspan="5" width="85%"
-        bgcolor="#008080"><p align="center">To:</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#008080">From:</td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">T</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">value_type</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">reference</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">const_reference</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">param_type</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">T</td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">value_type</td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">reference</td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">const_reference</td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0">param_type</td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">Y</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">-</p>
-        </td>
-    </tr>
-</table>
-
-<p>&nbsp;</p>
-
-<h3><a name="examples"></a>Examples</h3>
-
-<p>The following table shows the effect that call_traits has on
-various types, the table assumes that the compiler supports
-partial specialization: if it doesn't then all types behave in
-the same way as the entry for &quot;myclass&quot;, and call_traits
-can not be used with reference or array types.</p>
-
-<table border="0" cellpadding="7" cellspacing="1" width="766">
-    <tr>
-        <td valign="top" width="17%">&nbsp;</td>
-        <td valign="top" colspan="5" width="85%"
-        bgcolor="#008080"><p align="center">Call_traits type:</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#008080"><p
-        align="center">Original type T</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">value_type</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">reference</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">const_reference</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">param_type</p>
-        </td>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">Applies to:</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">myclass</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">myclass</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">myclass&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const
-        myclass&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">myclass
-        const&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All user
-        defined types.</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">int</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int const</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All small
-        built-in types.</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">int*</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int*</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int*&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int*const&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int* const</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All
-        pointer types.</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All
-        reference types.</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int&amp;</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All
-        constant-references.</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">int[3]</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int*</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">int(&amp;)[3]</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int(&amp;)[3]</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int*
-        const</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All array
-        types.</p>
-        </td>
-    </tr>
-    <tr>
-        <td valign="top" width="17%" bgcolor="#C0C0C0"><p
-        align="center">const int[3]</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int*</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int(&amp;)[3]</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int(&amp;)[3]</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">const int*
-        const</p>
-        </td>
-        <td valign="top" width="17%"><p align="center">All
-        constant-array types.</p>
-        </td>
-    </tr>
-</table>
-
-<p>&nbsp;</p>
-
-<h4>Example 1:</h4>
-
-<p>The following class is a trivial class that stores some type T
-by value (see the <a href="call_traits_test.cpp">call_traits_test.cpp</a>
-file), the aim is to illustrate how each of the available call_traits
-typedefs may be used:</p>
-
-<pre>template &lt;class T&gt;
-struct contained
-{
-   // define our typedefs first, arrays are stored by value
-   // so value_type is not the same as result_type:
-   typedef typename boost::call_traits&lt;T&gt;::param_type       param_type;
-   typedef typename boost::call_traits&lt;T&gt;::reference        reference;
-   typedef typename boost::call_traits&lt;T&gt;::const_reference  const_reference;
-   typedef T                                                value_type;
-   typedef typename boost::call_traits&lt;T&gt;::value_type       result_type;
-
-   // stored value:
-   value_type v_;
-   
-   // constructors:
-   contained() {}
-   contained(param_type p) : v_(p){}
-   // return byval:
-   result_type value() { return v_; }
-   // return by_ref:
-   reference get() { return v_; }
-   const_reference const_get()const { return v_; }
-   // pass value:
-   void call(param_type p){}
-
-};</pre>
-
-<h4><a name="refs"></a>Example 2 (the reference to reference
-problem):</h4>
-
-<p>Consider the definition of std::binder1st:</p>
-
-<pre>template &lt;class Operation&gt; 
-class binder1st : 
-   public unary_function&lt;Operation::second_argument_type, Operation::result_type&gt; 
-{ 
-protected: 
-   Operation op; 
-   Operation::first_argument_type value; 
-public: 
-   binder1st(const Operation&amp; x, const Operation::first_argument_type&amp; y); 
-   Operation::result_type operator()(const Operation::second_argument_type&amp; x) const; 
-}; </pre>
-
-<p>Now consider what happens in the relatively common case that
-the functor takes its second argument as a reference, that
-implies that <code>Operation::second_argument_type</code> is a
-reference type, <code>operator()</code> will now end up taking a
-reference to a reference as an argument, and that is not
-currently legal. The solution here is to modify <code>operator()</code>
-to use call_traits:</p>
-
-<pre>Operation::result_type operator()(call_traits&lt;Operation::second_argument_type&gt;::param_type x) const;</pre>
-
-<p>Now in the case that <code>Operation::second_argument_type</code>
-is a reference type, the argument is passed as a reference, and
-the no &quot;reference to reference&quot; occurs.</p>
-
-<h4><a name="ex3"></a>Example 3 (the make_pair problem):</h4>
-
-<p>If we pass the name of an array as one (or both) arguments to <code>std::make_pair</code>,
-then template argument deduction deduces the passed parameter as
-&quot;const reference to array of T&quot;, this also applies to
-string literals (which are really array literals). Consequently
-instead of returning a pair of pointers, it tries to return a
-pair of arrays, and since an array type is not copy-constructible
-the code fails to compile. One solution is to explicitly cast the
-arguments to make_pair to pointers, but call_traits provides a
-better (i.e. automatic) solution (and one that works safely even
-in generic code where the cast might do the wrong thing):</p>
-
-<pre>template &lt;class T1, class T2&gt;
-std::pair&lt;
-   typename boost::call_traits&lt;T1&gt;::value_type, 
-   typename boost::call_traits&lt;T2&gt;::value_type&gt; 
-      make_pair(const T1&amp; t1, const T2&amp; t2)
-{
-   return std::pair&lt;
-      typename boost::call_traits&lt;T1&gt;::value_type, 
-      typename boost::call_traits&lt;T2&gt;::value_type&gt;(t1, t2);
-}</pre>
-
-<p>Here, the deduced argument types will be automatically
-degraded to pointers if the deduced types are arrays, similar
-situations occur in the standard binders and adapters: in
-principle in any function that &quot;wraps&quot; a temporary
-whose type is deduced.</p>
-
-<h4><a name="ex4"></a>Example 4 (optimising fill):</h4>
-
-<p>The call_traits template will &quot;optimize&quot; the passing
-of a small built-in type as a function parameter, this mainly has
-an effect when the parameter is used within a loop body. In the
-following example (see <a href="algo_opt_examples.cpp">algo_opt_examples.cpp</a>),
-a version of std::fill is optimized in two ways: if the type
-passed is a single byte built-in type then std::memset is used to
-effect the fill, otherwise a conventional C++ implemention is
-used, but with the passed parameter &quot;optimized&quot; using
-call_traits:</p>
-
-<pre>namespace detail{
-
-template &lt;bool opt&gt;
-struct filler
-{
-   template &lt;typename I, typename T&gt;
-   static void do_fill(I first, I last, typename boost::call_traits&lt;T&gt;::param_type val);
-   {
-      while(first != last)
-      {
-         *first = val;
-         ++first;
-      }
-   }
-};
-
-template &lt;&gt;
-struct filler&lt;true&gt;
-{
-   template &lt;typename I, typename T&gt;
-   static void do_fill(I first, I last, T val)
-   {
-      memset(first, val, last-first);
-   }
-};
-
-}
-
-template &lt;class I, class T&gt;
-inline void fill(I first, I last, const T&amp; val)
-{
-   enum{ can_opt = boost::is_pointer&lt;I&gt;::value
-                   &amp;&amp; boost::is_arithmetic&lt;T&gt;::value
-                   &amp;&amp; (sizeof(T) == 1) };
-   typedef detail::filler&lt;can_opt&gt; filler_t;
-   filler_t::template do_fill&lt;I,T&gt;(first, last, val);
-}</pre>
-
-<p>Footnote: the reason that this is &quot;optimal&quot; for
-small built-in types is that with the value passed as &quot;T
-const&quot; instead of &quot;const T&amp;&quot; the compiler is
-able to tell both that the value is constant and that it is free
-of aliases. With this information the compiler is able to cache
-the passed value in a register, unroll the loop, or use
-explicitly parallel instructions: if any of these are supported.
-Exactly how much mileage you will get from this depends upon your
-compiler - we could really use some accurate benchmarking
-software as part of boost for cases like this.</p>
-
-<h3>Rationale</h3>
-
-<p>The following notes are intended to briefly describe the
-rational behind choices made in call_traits.</p>
-
-<p>All user-defined types follow &quot;existing practice&quot;
-and need no comment.</p>
-
-<p>Small built-in types (what the standard calls fundamental
-types [3.9.1]) differ from existing practice only in the <i>param_type</i>
-typedef. In this case passing &quot;T const&quot; is compatible
-with existing practice, but may improve performance in some cases
-(see <a href="#ex4">Example 4</a>), in any case this should never
-be any worse than existing practice.</p>
-
-<p>Pointers follow the same rational as small built-in types.</p>
-
-<p>For reference types the rational follows <a href="#refs">Example
-2</a> - references to references are not allowed, so the call_traits
-members must be defined such that these problems do not occur.
-There is a proposal to modify the language such that &quot;a
-reference to a reference is a reference&quot; (issue #106,
-submitted by Bjarne Stroustrup), call_traits&lt;T&gt;::value_type
-and call_traits&lt;T&gt;::param_type both provide the same effect
-as that proposal, without the need for a language change (in
-other words it's a workaround).</p>
-
-<p>For array types, a function that takes an array as an argument
-will degrade the array type to a pointer type: this means that
-the type of the actual parameter is different from its declared
-type, something that can cause endless problems in template code
-that relies on the declared type of a parameter. For example:</p>
-
-<pre>template &lt;class T&gt;
-struct A
-{
-   void foo(T t);
-};</pre>
-
-<p><font face="Times New Roman">In this case if we instantiate A&lt;int[2]&gt;
-then the declared type of the parameter passed to member function
-foo is int[2], but it's actual type is const int*, if we try to
-use the type T within the function body, then there is a strong
-likelyhood that our code will not compile:</font></p>
-
-<pre>template &lt;class T&gt;
-void A&lt;T&gt;::foo(T t)
-{
-   T dup(t); // doesn't compile for case that T is an array.
-}</pre>
-
-<p>By using call_traits the degradation from array to pointer is
-explicit, and the type of the parameter is the same as it's
-declared type:</p>
-
-<pre>template &lt;class T&gt;
-struct A
-{
-   void foo(call_traits&lt;T&gt;::value_type t);
-};
-
-template &lt;class T&gt;
-void A&lt;T&gt;::foo(call_traits&lt;T&gt;::value_type t)
-{
-   call_traits&lt;T&gt;::value_type dup(t); // OK even if T is an array type.
-}</pre>
-
-<p>For value_type (return by value), again only a pointer may be
-returned, not a copy of the whole array, and again call_traits
-makes the degradation explicit. The value_type member is useful
-whenever an array must be explicitly degraded to a pointer - <a
-href="#ex3">Example 3</a> provides the test case (Footnote: the
-array specialisation for call_traits is the least well understood
-of all the call_traits specialisations, if the given semantics
-cause specific problems for you, or don't solve a particular
-array-related problem, then I would be interested to hear about
-it. Most people though will probably never need to use this
-specialisation).</p>
-
+<body>
+Automatic redirection failed, please go to
+<a href="./doc/html/utility/utilities/call_traits.html">./doc/html/utility/utilities/call_traits.html</a>
 <hr>
-
-<p>Revised 18 June 2000</p>
-
-<p><EFBFBD> Copyright boost.org 2000. Permission to copy, use, modify,
-sell and distribute this document is granted provided this
-copyright notice appears in all copies. This document is provided
-&quot;as is&quot; without express or implied warranty, and with
-no claim as to its suitability for any purpose.</p>
-
-<p>Based on contributions by Steve Cleary, Beman Dawes, Howard
-Hinnant and John Maddock.</p>
-
-<p>Maintained by <a href="mailto:John_Maddock@compuserve.com">John
-Maddock</a>, the latest version of this file can be found at <a
-href="http://www.boost.org/">www.boost.org</a>, and the boost
-discussion list at <a href="http://www.egroups.com/list/boost">www.egroups.com/list/boost</a>.</p>
-
-<p>.</p>
-
-<p>&nbsp;</p>
-
-<p>&nbsp;</p>
+<tt>
+   Boost.CallTraits<br>
+   <br>
+   Distributed under the Boost Software License, Version 1.0.
+   (See accompanying file LICENSE_1_0.txt or copy at
+   <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+   <br>
+</tt>
 </body>
 </html>

call_traits_test.cpp

@@ -1,378 +0,0 @@
-
-#include <cassert>
-#include <iostream>
-#include <iomanip>
-#include <algorithm>
-#include <typeinfo>
-#include <boost/call_traits.hpp>
-
-#ifdef __BORLANDC__
-// turn off some warnings, the way we do the tests will generate a *lot* of these
-// this is a result of the tests not call_traits itself....
-#pragma option -w-8004 -w-ccc -w-rch -w-eff -w-aus
-#endif
-
-//
-// struct contained models a type that contains a type (for example std::pair)
-// arrays are contained by value, and have to be treated as a special case:
-//
-template <class T>
-struct contained
-{
-   // define our typedefs first, arrays are stored by value
-   // so value_type is not the same as result_type:
-   typedef typename boost::call_traits<T>::param_type       param_type;
-   typedef typename boost::call_traits<T>::reference        reference;
-   typedef typename boost::call_traits<T>::const_reference  const_reference;
-   typedef T                                                value_type;
-   typedef typename boost::call_traits<T>::value_type       result_type;
-
-   // stored value:
-   value_type v_;
-   
-   // constructors:
-   contained() {}
-   contained(param_type p) : v_(p){}
-   // return byval:
-   result_type value()const { return v_; }
-   // return by_ref:
-   reference get() { return v_; }
-   const_reference const_get()const { return v_; }
-   // pass value:
-   void call(param_type p){}
-
-};
-
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-template <class T, std::size_t N>
-struct contained<T[N]>
-{
-   typedef typename boost::call_traits<T[N]>::param_type       param_type;
-   typedef typename boost::call_traits<T[N]>::reference        reference;
-   typedef typename boost::call_traits<T[N]>::const_reference  const_reference;
-   typedef T                                                   value_type[N];
-   typedef typename boost::call_traits<T[N]>::value_type       result_type;
-
-   value_type v_;
-
-   contained(param_type p)
-   {
-      std::copy(p, p+N, v_);
-   }
-   // return byval:
-   result_type value()const { return v_; }
-   // return by_ref:
-   reference get() { return v_; }
-   const_reference const_get()const { return v_; }
-   void call(param_type p){}
-};
-#endif
-
-template <class T>
-contained<typename boost::call_traits<T>::value_type> wrap(const T& t)
-{
-   typedef typename boost::call_traits<T>::value_type ct;
-   return contained<ct>(t);
-}
-
-namespace test{
-
-template <class T1, class T2>
-std::pair<
-   typename boost::call_traits<T1>::value_type,
-   typename boost::call_traits<T2>::value_type>
-      make_pair(const T1& t1, const T2& t2)
-{
-   return std::pair<
-      typename boost::call_traits<T1>::value_type,
-      typename boost::call_traits<T2>::value_type>(t1, t2);
-}
-
-} // namespace test
-
-using namespace std;
-
-//
-// struct checker:
-// verifies behaviour of contained example:
-//
-template <class T>
-struct checker
-{
-   typedef typename boost::call_traits<T>::param_type param_type;
-   void operator()(param_type);
-};
-
-template <class T>
-void checker<T>::operator()(param_type p)
-{
-   T t(p);
-   contained<T> c(t);
-   cout << "checking contained<" << typeid(T).name() << ">..." << endl;
-   assert(t == c.value());
-   assert(t == c.get());
-   assert(t == c.const_get());
-
-   cout << "typeof contained<" << typeid(T).name() << ">::v_ is:           " << typeid(&contained<T>::v_).name() << endl;
-   cout << "typeof contained<" << typeid(T).name() << ">::value() is:      " << typeid(&contained<T>::value).name() << endl;
-   cout << "typeof contained<" << typeid(T).name() << ">::get() is:        " << typeid(&contained<T>::get).name() << endl;
-   cout << "typeof contained<" << typeid(T).name() << ">::const_get() is:  " << typeid(&contained<T>::const_get).name() << endl;
-   cout << "typeof contained<" << typeid(T).name() << ">::call() is:       " << typeid(&contained<T>::call).name() << endl;
-   cout << endl;
-}
-
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-template <class T, std::size_t N>
-struct checker<T[N]>
-{
-   typedef typename boost::call_traits<T[N]>::param_type param_type;
-   void operator()(param_type t)
-   {
-      contained<T[N]> c(t);
-      cout << "checking contained<" << typeid(T[N]).name() << ">..." << endl;
-      unsigned int i = 0;
-      for(i = 0; i < N; ++i)
-         assert(t[i] == c.value()[i]);
-      for(i = 0; i < N; ++i)
-         assert(t[i] == c.get()[i]);
-      for(i = 0; i < N; ++i)
-         assert(t[i] == c.const_get()[i]);
-
-      cout << "typeof contained<" << typeid(T[N]).name() << ">::v_ is:         " << typeid(&contained<T[N]>::v_).name() << endl;
-      cout << "typeof contained<" << typeid(T[N]).name() << ">::value is:      " << typeid(&contained<T[N]>::value).name() << endl;
-      cout << "typeof contained<" << typeid(T[N]).name() << ">::get is:        " << typeid(&contained<T[N]>::get).name() << endl;
-      cout << "typeof contained<" << typeid(T[N]).name() << ">::const_get is:  " << typeid(&contained<T[N]>::const_get).name() << endl;
-      cout << "typeof contained<" << typeid(T[N]).name() << ">::call is:       " << typeid(&contained<T[N]>::call).name() << endl;
-      cout << endl;
-   }
-};
-#endif
-
-//
-// check_wrap:
-template <class T, class U>
-void check_wrap(const contained<T>& w, const U& u)
-{
-   cout << "checking contained<" << typeid(T).name() << ">..." << endl;
-   assert(w.value() == u);
-}
-
-//
-// check_make_pair:
-// verifies behaviour of "make_pair":
-//
-template <class T, class U, class V>
-void check_make_pair(T c, U u, V v)
-{
-   cout << "checking std::pair<" << typeid(c.first).name() << ", " << typeid(c.second).name() << ">..." << endl;
-   assert(c.first == u);
-   assert(c.second == v);
-   cout << endl;
-}
-
-
-struct UDT
-{
-   int i_;
-   UDT() : i_(2){}
-   bool operator == (const UDT& v){ return v.i_ == i_; }
-};
-
-//
-// define tests here
-unsigned failures = 0;
-unsigned test_count = 0;
-
-#define value_test(v, x) ++test_count;\
-                         if(v != x){++failures; std::cout << "checking value of " << #x << "...failed" << std::endl;}
-
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-#define type_test(v, x)  ++test_count;\
-                           if(boost::is_same<v, x>::value == false){\
-                           ++failures; \
-                           std::cout << "checking type of " << #x << "...failed" << std::endl; \
-                           std::cout << "   expected type was " << #v << std::endl; \
-                           std::cout << "   " << typeid(boost::is_same<v, x>).name() << "::value is false" << std::endl; }
-#else
-#define type_test(v, x)  ++test_count;\
-                         if(typeid(v) != typeid(x)){\
-                           ++failures; \
-                           std::cout << "checking type of " << #x << "...failed" << std::endl; \
-                           std::cout << "   expected type was " << #v << std::endl; \
-                           std::cout << "   " << "typeid(" #v ") != typeid(" #x ")" << std::endl; }
-#endif
-
-int main()
-{
-   checker<UDT> c1;
-   UDT u;
-   c1(u);
-   checker<int> c2;
-   int i = 2;
-   c2(i);
-   int* pi = &i;
-   checker<int*> c3;
-   c3(pi);
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-   checker<int&> c4;
-   c4(i);
-   checker<const int&> c5;
-   c5(i);
-
-   int a[2] = {1,2};
-   checker<int[2]> c6;
-   c6(a);
-#endif
-
-   check_wrap(wrap(2), 2);
-   const char ca[4] = "abc";
-   // compiler can't deduce this for some reason:
-   //check_wrap(wrap(ca), ca);
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-   check_wrap(wrap(a), a);
-   check_make_pair(test::make_pair(a, a), a, a);
-#endif
-
-   // cv-qualifiers applied to reference types should have no effect
-   // declare these here for later use with is_reference and remove_reference:
-   typedef int& r_type;
-   typedef const r_type cr_type;
-
-   type_test(UDT, boost::call_traits<UDT>::value_type)
-   type_test(UDT&, boost::call_traits<UDT>::reference)
-   type_test(const UDT&, boost::call_traits<UDT>::const_reference)
-   type_test(const UDT&, boost::call_traits<UDT>::param_type)
-   type_test(int, boost::call_traits<int>::value_type)
-   type_test(int&, boost::call_traits<int>::reference)
-   type_test(const int&, boost::call_traits<int>::const_reference)
-   type_test(const int, boost::call_traits<int>::param_type)
-   type_test(int*, boost::call_traits<int*>::value_type)
-   type_test(int*&, boost::call_traits<int*>::reference)
-   type_test(int*const&, boost::call_traits<int*>::const_reference)
-   type_test(int*const, boost::call_traits<int*>::param_type)
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-   type_test(int&, boost::call_traits<int&>::value_type)
-   type_test(int&, boost::call_traits<int&>::reference)
-   type_test(const int&, boost::call_traits<int&>::const_reference)
-   type_test(int&, boost::call_traits<int&>::param_type)
-#if !(defined(__GNUC__) && (__GNUC__ < 3))
-   type_test(int&, boost::call_traits<cr_type>::value_type)
-   type_test(int&, boost::call_traits<cr_type>::reference)
-   type_test(const int&, boost::call_traits<cr_type>::const_reference)
-   type_test(int&, boost::call_traits<cr_type>::param_type)
-#else
-   std::cout << "GNU C++ cannot instantiate call_traits<cr_type>, skipping four tests (4 errors)" << std::endl;
-   failures += 4;
-   test_count += 4;
-#endif
-   type_test(const int&, boost::call_traits<const int&>::value_type)
-   type_test(const int&, boost::call_traits<const int&>::reference)
-   type_test(const int&, boost::call_traits<const int&>::const_reference)
-   type_test(const int&, boost::call_traits<const int&>::param_type)
-   type_test(const int*, boost::call_traits<int[3]>::value_type)
-   type_test(int(&)[3], boost::call_traits<int[3]>::reference)
-   type_test(const int(&)[3], boost::call_traits<int[3]>::const_reference)
-   type_test(const int*const, boost::call_traits<int[3]>::param_type)
-   type_test(const int*, boost::call_traits<const int[3]>::value_type)
-   type_test(const int(&)[3], boost::call_traits<const int[3]>::reference)
-   type_test(const int(&)[3], boost::call_traits<const int[3]>::const_reference)
-   type_test(const int*const, boost::call_traits<const int[3]>::param_type)
-#else
-   std::cout << "You're compiler does not support partial template instantiation, skipping 20 tests (20 errors)" << std::endl;
-   failures += 20;
-   test_count += 20;
-#endif
-
-   std::cout << std::endl << test_count << " tests completed (" << failures << " failures)... press any key to exit";
-   std::cin.get();
-   return failures;
-}
-
-//
-// define call_traits tests to check that the assertions in the docs do actually work
-// this is an instantiate only set of tests:
-//
-template <typename T, bool isarray = false>
-struct call_traits_test
-{
-   typedef ::boost::call_traits<T> ct;
-   typedef typename ct::param_type param_type;
-   typedef typename ct::reference reference;
-   typedef typename ct::const_reference const_reference;
-   typedef typename ct::value_type value_type;
-   static void assert_construct(param_type val);
-};
-
-template <typename T, bool isarray>
-void call_traits_test<T, isarray>::assert_construct(typename call_traits_test<T, isarray>::param_type val)
-{
-   //
-   // this is to check that the call_traits assertions are valid:
-   T t(val);
-   value_type v(t);
-   reference r(t);
-   const_reference cr(t);
-   param_type p(t);
-   value_type v2(v);
-   value_type v3(r);
-   value_type v4(p);
-   reference r2(v);
-   reference r3(r);
-   const_reference cr2(v);
-   const_reference cr3(r);
-   const_reference cr4(cr);
-   const_reference cr5(p);
-   param_type p2(v);
-   param_type p3(r);
-   param_type p4(p);
-}
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-template <typename T>
-struct call_traits_test<T, true>
-{
-   typedef ::boost::call_traits<T> ct;
-   typedef typename ct::param_type param_type;
-   typedef typename ct::reference reference;
-   typedef typename ct::const_reference const_reference;
-   typedef typename ct::value_type value_type;
-   static void assert_construct(param_type val);
-};
-
-template <typename T>
-void call_traits_test<T, true>::assert_construct(boost::call_traits<T>::param_type val)
-{
-   //
-   // this is to check that the call_traits assertions are valid:
-   T t;
-   value_type v(t);
-   value_type v5(val);
-   reference r = t;
-   const_reference cr = t;
-   reference r2 = r;
-   #ifndef __BORLANDC__
-   // C++ Builder buglet:
-   const_reference cr2 = r;
-   #endif
-   param_type p(t);
-   value_type v2(v);
-   const_reference cr3 = cr;
-   value_type v3(r);
-   value_type v4(p);
-   param_type p2(v);
-   param_type p3(r);
-   param_type p4(p);
-}
-#endif //BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-//
-// now check call_traits assertions by instantiating call_traits_test:
-template struct call_traits_test<int>;
-template struct call_traits_test<const int>;
-template struct call_traits_test<int*>;
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-template struct call_traits_test<int&>;
-template struct call_traits_test<const int&>;
-template struct call_traits_test<int[2], true>;
-#endif
-
-

cast.htm

@@ -1,148 +0,0 @@
-<html>
-
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
-<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
-<meta name="ProgId" content="FrontPage.Editor.Document">
-<title>Header boost/cast.hpp Documentation</title>
-</head>
-
-<body bgcolor="#FFFFFF" text="#000000">
-
-<h1><img src="../../c++boost.gif" alt="c++boost.gif (8819 bytes)" align="center" width="277" height="86">Header
-<a href="../../boost/cast.hpp">boost/cast.hpp</a></h1>
-<h2><a name="Cast Functions">Cast Functions</a></h2>
-<p>The <code>header <a href="../../boost/cast.hpp">boost/cast.hpp</a></code>
-provides <a href="#Polymorphic_cast"><b>polymorphic_cast</b></a>, <a href="#Polymorphic_cast"><b>polymorphic_downcast</b></a>,
-and <a href="#numeric_cast"><b>numeric_cast</b></a> template functions designed
-to complement the C++ Standard's built-in casts.</p>
-<p>The program&nbsp;<a href="cast_test.cpp">cast_test.cpp</a> can be used to
-verify these function templates work as expected.</p>
-<p><b>polymorphic_cast</b> was suggested by Bjarne Stroustrup in &quot;The C++
-Programming Language&quot;.<br>
-<b>polymorphic_downcast</b> was contributed by <a href="../../people/dave_abrahams.htm">Dave
-Abrahams</a>.<b><br>
-numeric_cast</b> was contributed by <a href="../../people/kevlin_henney.htm">Kevlin
-Henney</a>.</p>
-<h3>Namespace synopsis</h3>
-<blockquote>
-  <pre>namespace boost {
-    namespace cast {
-        // all synopsis below included here
-    }
-  using ::boost::cast::polymorphic_cast;
-  using ::boost::cast::polymorphic_downcast;
-  using ::boost::cast::bad_numeric_cast;
-  using ::boost::cast::numeric_cast;
-}</pre>
-</blockquote>
-<h3><a name="Polymorphic_cast">Polymorphic casts</a></h3>
-<p>Pointers to polymorphic objects (objects of classes which define at least one
-virtual function) are sometimes downcast or crosscast.&nbsp; Downcasting means
-casting from a base class to a derived class.&nbsp; Crosscasting means casting
-across an inheritance hierarchy diagram, such as from one base to the other in a
-<b>Y</b> diagram hierarchy.</p>
-<p>Such casts can be done with old-style casts, but this approach is never to be
-recommended.&nbsp; Old-style casts are sorely lacking in type safety, suffer
-poor readability, and are difficult to locate with search tools.</p>
-<p>The C++ built-in <b>static_cast</b> can be used for efficiently downcasting
-pointers to polymorphic objects, but provides no error detection for the case
-where the pointer being cast actually points to the wrong derived class. The <b>polymorphic_downcast</b>
-template retains the efficiency of <b>static_cast</b> for non-debug
-compilations, but for debug compilations adds safety via an assert() that a <b>dynamic_cast</b>
-succeeds.&nbsp;<b>&nbsp;</b></p>
-<p>The C++ built-in <b>dynamic_cast</b> can be used for downcasts and crosscasts
-of pointers to polymorphic objects, but error notification in the form of a
-returned value of 0 is inconvenient to test, or worse yet, easy to forget to
-test.&nbsp; The <b>polymorphic_cast</b> template performs a <b>dynamic_cast</b>,
-and throws an exception if the <b>dynamic_cast</b> returns 0.</p>
-<p>A <b>polymorphic_downcast</b> is preferred when debug-mode tests will cover
-100% of the object types possibly cast and when non-debug-mode efficiency is an
-issue. If these two conditions are not present, <b>polymorphic_cast</b> is
-preferred.&nbsp; It must also be used for crosscasts.&nbsp; It does an assert(
-dynamic_cast&lt;Derived&gt;(x) == x ) where x is the base pointer, ensuring that
-not only is a non-zero pointer returned, but also that it correct in the
-presence of multiple inheritance. .<b> Warning:</b>: Because <b>polymorphic_downcast</b>
-uses assert(), it violates the One Definition Rule if NDEBUG is inconsistently
-defined across translation units.</p>
-<p>The C++ built-in <b>dynamic_cast</b> must be used to cast references rather
-than pointers.&nbsp; It is also the only cast that can be used to check whether
-a given interface is supported; in that case a return of 0 isn't an error
-condition.</p>
-<h3>polymorphic_cast and polymorphic_downcast synopsis</h3>
-<blockquote>
-  <pre>template &lt;class Derived, class Base&gt;
-inline Derived polymorphic_cast(Base* x);
-// Throws: std::bad_cast if ( dynamic_cast&lt;Derived&gt;(x) == 0 )
-// Returns: dynamic_cast&lt;Derived&gt;(x)
-
-template &lt;class Derived, class Base&gt;
-inline Derived polymorphic_downcast(Base* x);
-// Effects: assert( dynamic_cast&lt;Derived&gt;(x) == x );
-// Returns: static_cast&lt;Derived&gt;(x)</pre>
-</blockquote>
-<h3>polymorphic_downcast example</h3>
-<blockquote>
-  <pre>#include &lt;boost/cast.hpp&gt;
-...
-class Fruit { public: virtual ~Fruit(){}; ... };
-class Banana : public Fruit { ... };
-...
-void f( Fruit * fruit ) {
-// ... logic which leads us to believe it is a Banana
-  Banana * banana = boost::polymorphic_downcast&lt;Banana*&gt;(fruit);
-  ...</pre>
-</blockquote>
-<h3><a name="numeric_cast">numeric_cast</a></h3>
-<p>A <b>static_cast</b>, <b>implicit_cast</b> or implicit conversion will not
-detect failure to preserve range for numeric casts. The <b>numeric_cast</b>
-template function are similar to <b>static_cast</b> and certain (dubious)
-implicit conversions in this respect, except that they detect loss of numeric
-range. An exception is thrown when a runtime value preservation check fails.</p>
-<p>The requirements on the argument and result types are:</p>
-<blockquote>
-  <ul>
-    <li>Both argument and result types are CopyConstructible [20.1.3].</li>
-    <li>Both argument and result types are Numeric, defined by <code>std::numeric_limits&lt;&gt;::is_specialized</code>
-      being true.</li>
-    <li>The argument can be converted to the result type using <b>static_cast</b>.</li>
-  </ul>
-</blockquote>
-<h3>numeric_cast synopsis</h3>
-<blockquote>
-  <pre>class bad_numeric_cast : public std::bad_cast {...};
-
-template&lt;typename Target, typename Source&gt;
-  inline Target numeric_cast(Source arg);
-    // Throws:  bad_numeric_cast unless, in converting arg from Source to Target,
-    //          there is no loss of negative range, and no underflow, and no
-    //          overflow, as determined by std::numeric_limits
-    // Returns: static_cast&lt;Target&gt;(arg)</pre>
-</blockquote>
-<h3>numeric_cast example</h3>
-<blockquote>
-  <pre>#include &lt;boost/cast.hpp&gt;
-using namespace boost::cast;
-
-void ariane(double vx)
-{
-    ...
-    unsigned short dx = numeric_cast&lt;unsigned short&gt;(vx);
-    ...
-}</pre>
-</blockquote>
-<h3>numeric_cast rationale</h3>
-<p>The form of the throws condition is specified so that != is not a required
-operation.</p>
-<hr>
-<p>Revised&nbsp; <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan
--->28 June, 2000<!--webbot bot="Timestamp" endspan i-checksum="19846"
---></p>
-<p><EFBFBD> Copyright boost.org 1999. Permission to copy, use, modify, sell and
-distribute this document is granted provided this copyright notice appears in
-all copies. This document is provided &quot;as is&quot; without express or
-implied warranty, and with no claim as to its suitability for any purpose.</p>
-
-</body>
-
-</html>

cast_test.cpp

@@ -1,149 +0,0 @@
-//  boost utility cast test program  -----------------------------------------//
-
-//  (C) Copyright boost.org 1999. Permission to copy, use, modify, sell
-//  and distribute this software is granted provided this copyright
-//  notice appears in all copies. This software is provided "as is" without
-//  express or implied warranty, and with no claim as to its suitability for
-//  any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
-
-//  Revision History
-//   28 Jun 00  implicit_cast removed (Beman Dawes)
-//   30 Aug 99  value_cast replaced by numeric_cast
-//    3 Aug 99  Initial Version
-
-#include <iostream>
-#include <climits>
-#include <limits>
-#include <boost/cast.hpp>
-
-#  if SCHAR_MAX == LONG_MAX
-#      error "This test program doesn't work if SCHAR_MAX == LONG_MAX"
-#  endif 
-
-using namespace boost;
-using std::cout;
-
-namespace
-{
-    struct Base
-    { 
-        virtual char kind() { return 'B'; }
-    };
-    
-    struct Base2
-    { 
-        virtual char kind2() { return '2'; }
-    };
-    
-    struct Derived : public Base, Base2
-    {
-        virtual char kind() { return 'D'; }
-    }; 
-}   
-
-
-int main( int argc, char * argv[] )
-{
-    cout << "Usage: test_casts [n], where n omitted or is:\n"
-            "  1 = execute #1 assert failure (#ifndef NDEBUG)\n"
-            "  2 = execute #2 assert failure (#ifndef NDEBUG)\n"
-            "Example: test_casts 2\n\n";
-
-#   ifdef NDEBUG
-        cout << "NDEBUG is defined\n";
-#   else
-        cout << "NDEBUG is not defined\n";
-#   endif
-
-    cout << "\nBeginning tests...\n";        
-
-//  test polymorphic_cast  ---------------------------------------------------//
-    
-    //  tests which should succeed
-    Base *    base = new Derived;
-    Base2 *   base2 = 0;
-    Derived * derived = 0;
-    derived = polymorphic_downcast<Derived*>( base );  // downcast
-    assert( derived->kind() == 'D' );
-
-    derived = 0;
-    derived = polymorphic_cast<Derived*>( base ); // downcast, throw on error
-    assert( derived->kind() == 'D' );
-
-    base2 = polymorphic_cast<Base2*>( base ); // crosscast
-    assert( base2->kind2() == '2' );
-
-     //  tests which should result in errors being detected
-    int err_count = 0;
-    base = new Base;
-
-    if ( argc > 1 && *argv[1] == '1' )
-        { derived = polymorphic_downcast<Derived*>( base ); } // #1 assert failure
-
-    bool caught_exception = false;
-    try { derived = polymorphic_cast<Derived*>( base ); }
-    catch (std::bad_cast)
-        { cout<<"caught bad_cast\n"; caught_exception = true; }
-    if ( !caught_exception ) ++err_count;
-    //  the following is just so generated code can be inspected
-    if ( derived->kind() == 'B' ) ++err_count;
-
-//  test implicit_cast and numeric_cast  -------------------------------------//
-    
-    //  tests which should succeed
-    long small_value = 1;
-    long small_negative_value = -1;
-    long large_value = std::numeric_limits<long>::max();
-    long large_negative_value = std::numeric_limits<long>::min();
-    signed char c = 0;
-
-    c = large_value;  // see if compiler generates warning
-
-    c = numeric_cast<signed char>( small_value );
-    assert( c == 1 );
-    c = 0;
-    c = numeric_cast<signed char>( small_value );
-    assert( c == 1 );
-    c = 0;
-    c = numeric_cast<signed char>( small_negative_value );
-    assert( c == -1 );
-
-    //  tests which should result in errors being detected
-
-    caught_exception = false;
-    try { c = numeric_cast<signed char>( large_value ); }
-    catch (bad_numeric_cast)
-        { cout<<"caught bad_numeric_cast #1\n"; caught_exception = true; }
-    if ( !caught_exception ) ++err_count;
-
-    caught_exception = false;
-    try { c = numeric_cast<signed char>( large_negative_value ); }
-    catch (bad_numeric_cast)
-        { cout<<"caught bad_numeric_cast #2\n"; caught_exception = true; }
-    if ( !caught_exception ) ++err_count;
-
-    unsigned long ul;
-    caught_exception = false;
-    try { ul = numeric_cast<unsigned long>( large_negative_value ); }
-    catch (bad_numeric_cast)
-        { cout<<"caught bad_numeric_cast #3\n"; caught_exception = true; }
-    if ( !caught_exception ) ++err_count;
-
-    caught_exception = false;
-    try { ul = numeric_cast<unsigned long>( small_negative_value ); }
-    catch (bad_numeric_cast)
-        { cout<<"caught bad_numeric_cast #4\n"; caught_exception = true; }
-    if ( !caught_exception ) ++err_count;
-
-    caught_exception = false;
-    try { numeric_cast<int>( std::numeric_limits<double>::max() ); }
-    catch (bad_numeric_cast)
-        { cout<<"caught bad_numeric_cast #5\n"; caught_exception = true; }
-    if ( !caught_exception ) ++err_count;
-
-    cout << err_count << " errors detected\nTest "
-         << (err_count==0 ? "passed\n" : "failed\n");
-    return err_count;
-}   // main

checked_delete.html

@@ -0,0 +1,19 @@
+<html>
+<head>
+    <title>Boost.Utility</title>
+    <meta http-equiv="refresh" content="0; URL=../core/doc/html/core/checked_delete.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="../core/doc/html/core/checked_delete.html">../core/doc/html/core/checked_delete.html</a>
+<hr>
+<tt>
+    Boost.Utility<br>
+    <br>
+    Distributed under the Boost Software License, Version 1.0.
+    (See accompanying file LICENSE_1_0.txt or copy at
+    <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+    <br>
+</tt>
+</body>
+</html>

compressed_pair.htm

@@ -1,92 +1,19 @@
 <html>
-
 <head>
-<meta http-equiv="Content-Type"
-content="text/html; charset=iso-8859-1">
-<meta name="Template"
-content="C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\html.dot">
-<meta name="GENERATOR" content="Microsoft FrontPage Express 2.0">
-<title>Header <boost/compressed_pair.hpp></title>
+    <title>Boost.Utility</title>
+    <meta http-equiv="refresh" content="0; URL=./doc/html/utility/utilities/compressed_pair.html">
 </head>
-
-<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"
-vlink="#800080">
-
-<h2><img src="../../c++boost.gif" width="276" height="86">Header
-&lt;<a href="../../boost/detail/call_traits.hpp">boost/compressed_pair.hpp</a>&gt;</h2>
-
-<p>All of the contents of &lt;boost/compressed_pair.hpp&gt; are
-defined inside namespace boost.</p>
-
-<p>The class compressed pair is very similar to std::pair, but if
-either of the template arguments are empty classes, then the
-&quot;empty member optimisation&quot; is applied to compress the
-size of the pair.</p>
-
-<pre>template &lt;class T1, class T2&gt;
-class compressed_pair
-{
-public:
-	typedef T1                                                 first_type;
-	typedef T2                                                 second_type;
-	typedef typename call_traits&lt;first_type&gt;::param_type       first_param_type;
-	typedef typename call_traits&lt;second_type&gt;::param_type      second_param_type;
-	typedef typename call_traits&lt;first_type&gt;::reference        first_reference;
-	typedef typename call_traits&lt;second_type&gt;::reference       second_reference;
-	typedef typename call_traits&lt;first_type&gt;::const_reference  first_const_reference;
-	typedef typename call_traits&lt;second_type&gt;::const_reference second_const_reference;
-
-	         compressed_pair() : base() {}
-	         compressed_pair(first_param_type x, second_param_type y);
-	explicit compressed_pair(first_param_type x);
-	explicit compressed_pair(second_param_type y);
-
-	first_reference       first();
-	first_const_reference first() const;
-
-	second_reference       second();
-	second_const_reference second() const;
-
-	void swap(compressed_pair&amp; y);
-};</pre>
-
-<p>The two members of the pair can be accessed using the member
-functions first() and second(). Note that not all member
-functions can be instantiated for all template parameter types.
-In particular compressed_pair can be instantiated for reference
-and array types, however in these cases the range of constructors
-that can be used are limited. If types T1 and T2 are the same
-type, then there is only one version of the single-argument
-constructor, and this constructor initialises both values in the
-pair to the passed value.</p>
-
-<p>Note that compressed_pair can not be instantiated if either of
-the template arguments is an enumerator type, unless there is
-compiler support for boost::is_enum, or if boost::is_enum is
-specialised for the enumerator type.</p>
-
-<p>Finally, compressed_pair requires compiler support for partial
-specialisation of class templates - without that support
-compressed_pair behaves just like std::pair.</p>
-
+<body>
+Automatic redirection failed, please go to
+<a href="./doc/html/utility/utilities/compressed_pair.html">./doc/html/utility/utilities/compressed_pair.html</a>
 <hr>
-
-<p>Revised 08 March 2000</p>
-
-<p><EFBFBD> Copyright boost.org 2000. Permission to copy, use, modify,
-sell and distribute this document is granted provided this
-copyright notice appears in all copies. This document is provided
-&quot;as is&quot; without express or implied warranty, and with
-no claim as to its suitability for any purpose.</p>
-
-<p>Based on contributions by Steve Cleary, Beman Dawes, Howard
-Hinnant and John Maddock.</p>
-
-<p>Maintained by <a href="mailto:John_Maddock@compuserve.com">John
-Maddock</a>, the latest version of this file can be found at <a
-href="http://www.boost.org">www.boost.org</a>, and the boost
-discussion list at <a href="http://www.egroups.com/list/boost">www.egroups.com/list/boost</a>.</p>
-
-<p>&nbsp;</p>
+<tt>
+    Boost.Utility<br>
+    <br>
+    Distributed under the Boost Software License, Version 1.0.
+    (See accompanying file LICENSE_1_0.txt or copy at
+    <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+    <br>
+</tt>
 </body>
 </html>

compressed_pair_test.cpp

@@ -1,153 +0,0 @@
- // boost::compressed_pair test program   
-    
- //  (C) Copyright John Maddock 2000. Permission to copy, use, modify, sell and   
- //  distribute this software is granted provided this copyright notice appears   
- //  in all copies. This software is provided "as is" without express or implied   
- //  warranty, and with no claim as to its suitability for any purpose.   
-
-#include <iostream>
-#include <typeinfo>
-#include <cassert>
-
-#include <boost/compressed_pair.hpp>
-
-using namespace boost;
-
-#ifdef __BORLANDC__
-#pragma option -w-ccc -w-rch -w-eff -w-aus
-#endif
-
-//
-// define tests here
-unsigned failures = 0;
-unsigned test_count = 0;
-
-#define value_test(v, x) ++test_count;\
-                         if(v != x){++failures; std::cout << "checking value of " << #x << "...failed" << std::endl;}
-#define value_fail(v, x) ++test_count; ++failures; std::cout << "checking value of " << #x << "...failed" << std::endl;
-
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-#define type_test(v, x)  ++test_count;\
-                         if(boost::is_same<v, x>::value == false){\
-                           ++failures; \
-                           std::cout << "checking type of " << #x << "...failed" << std::endl; \
-                           std::cout << "   expected type was " << #v << std::endl; \
-                           std::cout << "   " << typeid(boost::is_same<v, x>).name() << "::value is false" << std::endl; }
-#else
-#define type_test(v, x)  ++test_count;\
-                         if(typeid(v) != typeid(x)){\
-                           ++failures; \
-                           std::cout << "checking type of " << #x << "...failed" << std::endl; \
-                           std::cout << "   expected type was " << #v << std::endl; \
-                           std::cout << "   " << "typeid(" #v ") != typeid(" #x ")" << std::endl; }
-#endif
-
-struct empty_POD_UDT{};
-struct empty_UDT
-{
-  ~empty_UDT(){};
-};
-namespace boost {
-#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
-template <> struct is_empty<empty_UDT>
-{ static const bool value = true; };
-template <> struct is_empty<empty_POD_UDT>
-{ static const bool value = true; };
-template <> struct is_POD<empty_POD_UDT>
-{ static const bool value = true; };
-#else
-template <> struct is_empty<empty_UDT>
-{ enum{ value = true }; };
-template <> struct is_empty<empty_POD_UDT>
-{ enum{ value = true }; };
-template <> struct is_POD<empty_POD_UDT>
-{ enum{ value = true }; };
-#endif
-}
-
-
-int main()
-{
-   compressed_pair<int, double> cp1(1, 1.3);
-   assert(cp1.first() == 1);
-   assert(cp1.second() == 1.3);
-   compressed_pair<int, double> cp1b(2, 2.3);
-   assert(cp1b.first() == 2);
-   assert(cp1b.second() == 2.3);
-   swap(cp1, cp1b);
-   assert(cp1b.first() == 1);
-   assert(cp1b.second() == 1.3);
-   assert(cp1.first() == 2);
-   assert(cp1.second() == 2.3);
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-   compressed_pair<empty_UDT, int> cp2(2);
-   assert(cp2.second() == 2);
-#endif
-   compressed_pair<int, empty_UDT> cp3(1);
-   assert(cp3.first() ==1);
-   compressed_pair<empty_UDT, empty_UDT> cp4;
-   compressed_pair<empty_UDT, empty_POD_UDT> cp5;
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-   int i = 0;
-   compressed_pair<int&, int&> cp6(i,i);
-   assert(cp6.first() == i);
-   assert(cp6.second() == i);
-   assert(&cp6.first() == &i);
-   assert(&cp6.second() == &i);
-   compressed_pair<int, double[2]> cp7;
-   cp7.first();
-   double* pd = cp7.second();
-#endif
-   value_test(true, (sizeof(compressed_pair<empty_UDT, int>) < sizeof(std::pair<empty_UDT, int>)))
-   value_test(true, (sizeof(compressed_pair<int, empty_UDT>) < sizeof(std::pair<int, empty_UDT>)))
-   value_test(true, (sizeof(compressed_pair<empty_UDT, empty_UDT>) < sizeof(std::pair<empty_UDT, empty_UDT>)))
-   value_test(true, (sizeof(compressed_pair<empty_UDT, empty_POD_UDT>) < sizeof(std::pair<empty_UDT, empty_POD_UDT>)))
-   value_test(true, (sizeof(compressed_pair<empty_UDT, compressed_pair<empty_POD_UDT, int> >) < sizeof(std::pair<empty_UDT, std::pair<empty_POD_UDT, int> >)))
-
-   std::cout << std::endl << test_count << " tests completed (" << failures << " failures)... press any key to exit";
-   std::cin.get();
-   return failures;
-}
-
-//
-// instanciate some compressed pairs:
-#ifdef __MWERKS__
-template class compressed_pair<int, double>;
-template class compressed_pair<int, int>;
-template class compressed_pair<empty_UDT, int>;
-template class compressed_pair<int, empty_UDT>;
-template class compressed_pair<empty_UDT, empty_UDT>;
-template class compressed_pair<empty_UDT, empty_POD_UDT>;
-#else
-template class boost::compressed_pair<int, double>;
-template class boost::compressed_pair<int, int>;
-template class boost::compressed_pair<empty_UDT, int>;
-template class boost::compressed_pair<int, empty_UDT>;
-template class boost::compressed_pair<empty_UDT, empty_UDT>;
-template class boost::compressed_pair<empty_UDT, empty_POD_UDT>;
-#endif
-
-#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-//
-// now some for which only a few specific members can be instantiated,
-// first references:
-template double& compressed_pair<double, int&>::first();
-template int& compressed_pair<double, int&>::second();
-template compressed_pair<double, int&>::compressed_pair(int&);
-template compressed_pair<double, int&>::compressed_pair(call_traits<double>::param_type,int&);
-//
-// and then arrays:
-#ifndef __MWERKS__
-#ifndef __BORLANDC__
-template call_traits<int[2]>::reference compressed_pair<double, int[2]>::second();
-#endif
-template call_traits<double>::reference compressed_pair<double, int[2]>::first();
-template compressed_pair<double, int[2]>::compressed_pair(const double&);
-template compressed_pair<double, int[2]>::compressed_pair();
-#endif // __MWERKS__
-#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-
-
-
-
-

doc/.gitignore

@@ -0,0 +1,4 @@
+html
+xml
+temp
+out.txt

doc/BOOST_BINARY.qbk

@@ -0,0 +1,80 @@
+[/
+ / Copyright (c) 2012 Marshall Clow
+ / Copyright (c) 2021, Alan Freitas
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[/===============]
+[section:BOOST_BINARY Binary Integer Literals]
+[/===============]
+
+[section Introduction]
+
+The macro `BOOST_BINARY` is used for the representation of binary
+literals. It takes as an argument a binary number arranged as an
+arbitrary amount of 1s and 0s in groupings of length 1 to 8, with
+groups separated by spaces. The macro serves as a replacement for
+[@https://en.cppreference.com/w/cpp/language/integer_literal binary integer literals],
+adopted in C++14.
+
+The type of the literal yielded is determined by the same rules as
+those of [@https://en.cppreference.com/w/cpp/language/integer_literal hex and octal literals].
+By implementation, this macro expands directly to an octal literal during preprocessing, so
+there is no overhead at runtime and the result is usable in any place that an octal literal
+would be.
+
+In order to directly support binary literals with suffixes,
+additional macros of the form `BOOST_BINARY_XXX` are also
+provided, where `XXX` is a standard integer suffix in all capital
+letters.
+
+In addition, LL and ULL suffixes may be used for representing
+`long long` and `unsigned long long` types in compilers which provide
+them as an extension.
+
+The `BOOST_BINARY` family of macros resides in the header
+[@../../../../boost/utility/binary.hpp <boost/utility/binary.hpp>].
+
+[endsect]
+
+[section Example]
+
+```
+void foo( int );
+
+void foo( unsigned long );
+
+void bar()
+{
+  int value1 = BOOST_BINARY( 100 111000 01 1 110 );
+
+  unsigned long value2 = BOOST_BINARY_UL( 100 001 ); // unsigned long
+
+  long long value3 = BOOST_BINARY_LL( 11 000 ); // long long if supported
+
+  __assert__(    BOOST_BINARY( 10010 )
+          &  BOOST_BINARY( 11000 )
+          == BOOST_BINARY( 10000 )
+        );
+
+  foo( BOOST_BINARY( 1010 ) ); // calls the first foo
+
+  foo( BOOST_BINARY_LU( 1010 ) ); // calls the second foo
+}
+```
+
+[endsect]
+
+[/===============]
+[xinclude tmp/boost_binary_reference.xml]
+[/===============]
+
+
+[section Acknowledgments]
+
+Contributed by Matt Calabrese.
+
+[endsect]
+
+[endsect]

doc/Jamfile.v2

@@ -0,0 +1,422 @@
+# Copyright John Maddock 2005. Use, modification, and distribution are
+# subject to the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+import project ;
+import doxygen ;
+import quickbook ;
+
+project boost/libs/utility/doc ;
+
+path-constant INCLUDES : ../include ;
+path-constant boost-images : ../../../doc/src/images ;
+
+# Generate XML doxygen reference for base_from_member component in base_from_member_reference.xml
+doxygen base_from_member_reference
+  :
+    $(INCLUDES)/boost/utility/base_from_member.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=base_from_member.reference"
+  ;
+
+# Generate XML doxygen reference for boost_binary component in boost_binary_reference.xml
+doxygen boost_binary_reference
+  :
+    $(INCLUDES)/boost/utility/binary.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=boost_binary.reference"
+  ;
+
+# Generate XML doxygen reference for call_traits component in call_traits_reference.xml
+doxygen call_traits_reference
+  :
+    $(INCLUDES)/boost/call_traits.hpp
+    $(INCLUDES)/boost/detail/call_traits.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=call_traits.reference"
+  ;
+
+# Generate XML doxygen reference for compressed_pair component in compressed_pair_reference.xml
+doxygen compressed_pair_reference
+  :
+    $(INCLUDES)/boost/compressed_pair.hpp
+    $(INCLUDES)/boost/detail/compressed_pair.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=compressed_pair.reference"
+  ;
+
+# Generate XML doxygen reference for in_place_factory component in in_place_factory_reference.xml
+doxygen in_place_factory_reference
+  :
+    $(INCLUDES)/boost/utility/in_place_factory.hpp
+    $(INCLUDES)/boost/utility/typed_in_place_factory.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=in_place_factory.reference"
+  ;
+
+# Generate XML doxygen reference for operators component in operators_reference.xml
+# we skip operators_reference because operators.hpp is not adapted for doxygen
+
+# Generate XML doxygen reference for result_of component in result_of_reference.xml
+doxygen result_of_reference
+  :
+    $(INCLUDES)/boost/utility/result_of.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=result_of.reference"
+  ;
+
+# Generate XML doxygen reference for string_view component in string_view_reference.xml
+doxygen string_view_reference
+  :
+    $(INCLUDES)/boost/utility/string_view.hpp
+    $(INCLUDES)/boost/utility/string_ref.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=string_view.reference"
+  ;
+
+# Generate XML doxygen reference for value_init component in value_init_reference.xml
+doxygen value_init_reference
+  :
+    $(INCLUDES)/boost/utility/value_init.hpp
+  :
+    <location>tmp
+    <doxygen:param>ENABLE_PREPROCESSING=YES
+    <doxygen:param>EXPAND_ONLY_PREDEF=YES
+    <doxygen:param>EXTRACT_ALL=NO
+    <doxygen:param>EXTRACT_PRIVATE=NO
+    <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+    <doxygen:param>MACRO_EXPANSION=YES
+    <doxygen:param>"PREDEFINED= \\
+                    BOOST_UTILITY_DOCS \\
+                    BOOST_SYMBOL_VISIBLE= \\
+                    BOOST_FORCEINLINE=inline \\
+                    BOOST_GPU_ENABLED= \\
+                    BOOST_STATIC_ASSERT(x)= \\
+                    BOOST_STATIC_ASSERT_MSG(x,y)= \\
+                    BOOST_STATIC_CONSTANT(x,y)=\"static constexpr x y\" \\
+                    BOOST_RV_REF(x)=\"x&&\" \\
+                    BOOST_NESTED_TEMPLATE=template \\
+                    BOOST_CONSTEXPR=constexpr \\
+                    BOOST_CXX14_CONSTEXPR=constexpr \\
+                    BOOST_OPERATORS_CONSTEXPR=constexpr \\
+                    BOOST_CONSTEXPR_OR_CONST=constexpr \\
+                    BOOST_NOEXCEPT=noexcept \\
+                    BOOST_NOEXCEPT_IF(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_EXPR(x)=noexcept(x) \\
+                    BOOST_NOEXCEPT_OR_NOTHROW=noexcept \\
+                    BOOST_COPY_ASSIGN_REF(x)=\"x const&\" \\
+                    BOOST_DEFAULTED_FUNCTION(x,y)=\"x = default;\" \\
+                    BOOST_DELETED_FUNCTION(x)=\"x = delete;\" \\
+                    BOOST_EXPLICIT_OPERATOR_BOOL()=\"explicit operator bool() const;\" \\
+                    BOOST_REF_CONST=const"
+    <doxygen:param>"EXCLUDE_SYMBOLS= \\
+                    detail \\
+                    F \\
+                    result_of_has_result_type_impl \\
+                    conditional \\
+                    boost::operators_impl"
+    <xsl:param>"boost.doxygen.reftitle=Reference"
+    <xsl:param>"boost.doxygen.refid=value_init.reference"
+  ;
+
+# Generate main.xml boostbook documentation from main.qbk quickbook documentation
+xml main : main.qbk ;
+
+# Generate ./html documentation from main.xml boostbook documentation
+# Each doxygen reference in quickbook files with [xinclude tmp/<component>_reference.xml] becomes:
+# <xi:include href="../../../../libs/utility/doc/tmp/<component>_reference.xml"/>
+# in boostbook.
+# All of these <xi:include> commands give the reference the id "utility.reference"
+boostbook standalone_main
+    :
+        main
+    :
+        <dependency>base_from_member_reference
+        <dependency>boost_binary_reference
+        <dependency>call_traits_reference
+        <dependency>compressed_pair_reference
+        <dependency>in_place_factory_reference
+        <dependency>result_of_reference
+        <dependency>string_view_reference
+        <dependency>value_init_reference
+        # File name of HTML output:
+        # <xsl:param>root.filename=main
+        <xsl:param>boost.root=../../../..
+        <format>pdf:<xsl:param>"boost.url.prefix=http://www.boost.org/doc/libs/release/libs/utility/doc/html"
+        # How far down we chunk nested sections: no more than two so utility component pages include their reference
+        <xsl:param>chunk.section.depth=2 # 8
+        # Don't put the first section on the same page as the TOC:
+        <xsl:param>chunk.first.sections=1 # 1
+        # How far down sections get TOC: 2 so we show each Utility component in main page but no more than that
+        <xsl:param>toc.section.depth=2 # 2
+        # Max depth in each TOC: 2 so we show each Utility component in main page but no more than that
+        <xsl:param>toc.max.depth=2 # 2
+        # How far down we go with TOC's in main page: 2 so each Utility component page has 1 level TOC
+        <xsl:param>generate.section.toc.level=2 # 2
+     ;
+
+###############################################################################
+alias boostdoc ;
+explicit boostdoc ;
+
+alias boostrelease : standalone_main ;
+explicit boostrelease ;

doc/base_from_member.qbk

@@ -0,0 +1,376 @@
+[/
+  Copyright 2001, 2003, 2004, 2012 Daryle Walker.
+  Copyright (c) 2021, Alan Freitas
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:base_from_member Base from Member]
+[block'''<?dbhtml stop-chunking?>''']
+
+[section Introduction]
+
+The class templates __base_from_member__ support the base-from-member idiom.
+When developing a class, sometimes a base class needs to be initialized
+with a member of the current class. As a na\u00EFve example:
+
+```
+#include <streambuf>  /* for std::streambuf */
+#include <ostream>    /* for std::ostream */
+
+class fdoutbuf
+  : public __std_streambuf__
+{
+public:
+    explicit fdoutbuf( int fd );
+    //...
+};
+
+class fdostream
+  : public __std_ostream__
+{
+protected:
+    fdoutbuf buf;
+public:
+    explicit fdostream( int fd )
+      : buf( fd ), __std_ostream__( &buf ) {}
+    //...
+};
+```
+
+This is undefined because C++'s initialization order mandates that the base
+class is initialized before the member it uses. [@http://www.moocat.org R.
+Samuel Klatchko] developed a way around this by using the initialization
+order in his favor. Base classes are initialized in order of declaration, so
+moving the desired member to another base class, that is initialized before
+the desired base class, can ensure proper initialization.
+
+A custom base class can be made for this idiom:
+
+    #include <streambuf>  /* for std::streambuf */
+    #include <ostream>    /* for std::ostream */
+
+    class fdoutbuf
+      : public __std_streambuf__
+    {
+    public:
+        explicit fdoutbuf( int fd );
+        //...
+    };
+
+    struct fdostream_pbase
+    {
+        fdoutbuf sbuffer;
+
+        explicit fdostream_pbase( int fd )
+          : sbuffer( fd ) {}
+    };
+
+    class fdostream
+      : private fdostream_pbase
+      , public __std_ostream__
+    {
+        typedef fdostream_pbase  pbase_type;
+        typedef __std_ostream__     base_type;
+
+    public:
+        explicit fdostream( int fd )
+          : pbase_type( fd ), base_type( &sbuffer ) {}
+        //...
+    };
+
+Other projects can use similar custom base classes. The technique is basic
+enough to make a template, with a sample template class in this library.
+The main template parameter is the type of the enclosed member. The
+template class has several (explicit) constructor member templates, which
+implicitly type the constructor arguments and pass them to the member. The
+template class uses implicit copy construction and assignment, cancelling
+them if the enclosed member is non-copyable.
+
+Manually coding a base class may be better if the construction and/or
+copying needs are too complex for the supplied template class, or if the
+compiler is not advanced enough to use it.
+
+Since base classes are unnamed, a class cannot have multiple (direct) base
+classes of the same type. The supplied template class has an extra template
+parameter, an integer, that exists solely to provide type differentiation.
+This parameter has a default value so a single use of a particular member
+type does not need to concern itself with the integer.
+
+
+[endsect]
+
+[section Synopsis]
+
+    #include <type_traits>  /* exposition only */
+
+    #ifndef BOOST_BASE_FROM_MEMBER_MAX_ARITY
+    #define BOOST_BASE_FROM_MEMBER_MAX_ARITY  10
+    #endif
+
+    template < typename MemberType, int UniqueID = 0 >
+    class __base_from_member__
+    {
+    protected:
+        MemberType  member;
+
+    #if ``['C++11 is in use]``
+        template< typename ...T >
+        explicit constexpr __base_from_member__( T&& ...x )
+         noexcept( __std_is_nothrow_constructible__<MemberType, T...>::value );
+    #else
+        __base_from_member__();
+
+        template< typename T1 >
+        explicit  __base_from_member__( T1 x1 );
+
+        template< typename T1, typename T2 >
+        __base_from_member__( T1 x1, T2 x2 );
+
+        //...
+
+        template< typename T1, typename T2, typename T3, typename T4,
+         typename T5, typename T6, typename T7, typename T8, typename T9,
+         typename T10 >
+        __base_from_member__( T1 x1, T2 x2, T3 x3, T4 x4, T5 x5, T6 x6, T7 x7,
+         T8 x8, T9 x9, T10 x10 );
+    #endif
+    };
+
+    template < typename MemberType, int UniqueID >
+    class __base_from_member__<MemberType&, UniqueID>
+    {
+    protected:
+        MemberType& member;
+
+        explicit constexpr __base_from_member__( MemberType& x )
+            noexcept;
+    };
+
+The class template has a first template parameter `MemberType` representing
+the type of the based-member. It has a last template parameter `UniqueID`,
+that is an `int`, to differentiate between multiple base classes that use
+the same based-member type. The last template parameter has a default value
+of zero if it is omitted. The class template has a protected data member
+called `member` that the derived class can use for later base classes or
+itself.
+
+If the appropriate features of C++11 are present, there will be a single
+constructor template. It implements ['perfect forwarding] to the best
+constructor call of `member` if any. The constructor template is marked
+both `constexpr` and `explicit`. The former will be ignored if the
+corresponding inner constructor call of `member` does not have the marker.
+The latter binds the other way; always taking effect, even when the inner
+constructor call does not have the marker. The constructor template
+propagates the `noexcept` status of the inner constructor call. The
+constructor template has a trailing parameter with a default value that
+disables the template when its signature is too close to the signatures of
+the automatically-defined non-template copy- and/or move-constructors of
+__base_from_member__.
+
+On earlier-standard compilers, there is a default constructor and several
+constructor member templates. These constructor templates can take as many
+arguments (currently up to ten) as possible and pass them to a constructor
+of the data member.
+
+A specialization for member references offers a single constructor taking
+a `MemberType&`, which is the only way to initialize a reference.
+
+Since C++ does not allow any way to explicitly state the template parameters
+of a templated constructor, make sure that the arguments are already close
+as possible to the actual type used in the data member's desired constructor.
+Explicit conversions may be necessary.
+
+The `BOOST_BASE_FROM_MEMBER_MAX_ARITY` macro constant specifies the maximum
+argument length for the constructor templates. The constant may be overridden
+if more (or less) argument configurations are needed. The constant may be
+read for code that is expandable like the class template and needs to
+maintain the same maximum size. (Example code would be a class that uses
+this class template as a base class for a member with a flexible set of
+constructors.) This constant is ignored when C++11 features are present.
+
+[endsect]
+
+[section Basic Usage]
+
+With the starting example, the `fdoutbuf` sub-object needs to be
+encapsulated in a base class that is inherited before `__std_ostream__`.
+
+```
+#include <boost/utility/base_from_member.hpp>
+
+#include <streambuf>  // for std::streambuf
+#include <ostream>    // for __std_ostream__
+
+class fdoutbuf
+  : public __std_streambuf__
+{
+public:
+    explicit fdoutbuf( int fd );
+    //...
+};
+
+class fdostream
+  : private __boost_base_from_member__<fdoutbuf>
+  , public __std_ostream__
+{
+    // Helper typedef's
+    typedef __boost_base_from_member__<fdoutbuf>  pbase_type;
+    typedef __std_ostream__                        base_type;
+
+public:
+    explicit fdostream( int fd )
+      : pbase_type( fd ), base_type( &member ){}
+    //...
+};
+```
+
+The base-from-member idiom is an implementation detail, so it should not
+be visible to the clients (or any derived classes) of `fdostream`. Due to
+the initialization order, the `fdoutbuf` sub-object will get initialized
+before the `__std_ostream__` sub-object does, making the former sub-object
+safe to use in the latter sub-object's construction. Since the `fdoutbuf`
+sub-object of the final type is the only sub-object with the name `member`
+that name can be used unqualified within the final class.
+
+[endsect]
+
+[section Multiple Sub-Objects]
+
+The base-from-member class templates should commonly involve only one
+base-from-member sub-object, usually for attaching a stream-buffer to an
+I/O stream. The next example demonstrates how to use multiple
+base-from-member sub-objects and the resulting qualification issues.
+
+```
+#include <boost/utility/base_from_member.hpp>
+
+#include <cstddef>  /* for NULL */
+
+struct an_int
+{
+    int  y;
+
+    an_int( float yf );
+};
+
+class switcher
+{
+public:
+    switcher();
+    switcher( double, int * );
+    //...
+};
+
+class flow_regulator
+{
+public:
+    flow_regulator( switcher &, switcher & );
+    //...
+};
+
+template < unsigned Size >
+class fan
+{
+public:
+    explicit fan( switcher );
+    //...
+};
+
+class system
+  : private __boost_base_from_member__<an_int>
+  , private __boost_base_from_member__<switcher>
+  , private __boost_base_from_member__<switcher, 1>
+  , private __boost_base_from_member__<switcher, 2>
+  , protected flow_regulator
+  , public fan<6>
+{
+    // Helper typedef's
+    typedef __boost_base_from_member__<an_int>       pbase0_type;
+    typedef __boost_base_from_member__<switcher>     pbase1_type;
+    typedef __boost_base_from_member__<switcher, 1>  pbase2_type;
+    typedef __boost_base_from_member__<switcher, 2>  pbase3_type;
+
+    typedef flow_regulator  base1_type;
+    typedef fan<6>          base2_type;
+
+public:
+    system( double x );
+    //...
+};
+
+system::system( double x )
+  : pbase0_type( 0.2 )
+  , pbase1_type()
+  , pbase2_type( -16, &this->pbase0_type::member.y )
+  , pbase3_type( x, static_cast<int *>(NULL) )
+  , base1_type( pbase3_type::member, pbase1_type::member )
+  , base2_type( pbase2_type::member )
+{
+    //...
+}
+```
+
+The final class has multiple sub-objects with the name `member`, so any
+use of that name needs qualification by a name of the appropriate base
+type. Using `typedef`s ease mentioning the base types.
+
+However, the fix introduces a new problem when a pointer is needed. Using the
+address operator with a sub-object qualified with its class's name results in a
+pointer-to-member (here, having a type of `an_int __boost_base_from_member__<an_int, 0>::*`)
+instead of a pointer to the member (having a type of `an_int*`).
+The new problem is fixed by qualifying the sub-object with `this->` and is needed
+just for pointers, and not for references or values.
+
+There are some argument conversions in the initialization. The constructor
+argument for `pbase0_type` is converted from `double` to `float`. The first
+constructor argument for `pbase2_type` is converted from `int` to `double`.
+
+The second constructor argument for `pbase3_type` is a special case of
+necessary conversion; all forms of the null-pointer literal in C++ (except
+`nullptr` from C++11) also look like compile-time integral expressions, so
+C++ always interprets such code as an integer when it has overloads that can
+take either an integer or a pointer.
+
+The last conversion is necessary for the compiler to call a constructor form
+with the exact pointer type used in `switcher`'s constructor. (If C++11's
+__nullptr__ is used, it still needs a conversion if multiple pointer types can
+be accepted in a constructor call but `__std_nullptr_t__` cannot.)
+
+[endsect]
+
+[/===============]
+[xinclude tmp/base_from_member_reference.xml]
+[/===============]
+
+[section Acknowledgments]
+
+Author: Walker, Daryle
+
+Copyright 2001, 2003, 2004, 2012 Daryle Walker
+
+* [@http://www.boost.org/people/ed_brey.htm Ed Brey] suggested some interface
+  changes.
+
+* [@http://www.moocat.org R. Samuel Klatchko] ([@mailto:rsk@moocat.org
+  rsk@moocat.org], [@mailto:rsk@brightmail.com rsk@brightmail.com]) invented
+  the idiom of how to use a class member for initializing a base class.
+
+* [@http://www.boost.org/people/dietmar_kuehl.htm Dietmar Kuehl] popularized the
+  base-from-member idiom in his [@http://www.informatik.uni-konstanz.de/~kuehl/c++/iostream/
+  IOStream example classes].
+
+* Jonathan Turkanis supplied an implementation of generating the constructor
+  templates that can be controlled and automated with macros. The
+  implementation uses the [@boost:/libs/preprocessor/index.html Preprocessor library].
+
+* [@http://www.boost.org/people/daryle_walker.html">Daryle Walker] started the
+  library. Contributed the test file [@../../../test/base_from_member_test.cpp
+  base_from_member_test.cpp].
+
+[endsect]
+
+[endsect]

doc/call_traits.qbk

@@ -0,0 +1,439 @@
+[/
+ / Copyright (c) 2012 Marshall Clow
+ / Copyright (c) 2021, Alan Freitas
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[/===============]
+[section:call_traits Call Traits]
+[/===============]
+
+[section Introduction]
+
+All of the contents of [@../../../../boost/call_traits.hpp `<boost/call_traits.hpp>`] are
+defined inside `namespace boost`.
+
+The template class __call_traits_T__ encapsulates the
+"best" method to pass a parameter of some type `T` to or
+from a function, and consists of a collection of `typedef`s defined
+as in the table below. The purpose of __call_traits__ is to ensure
+that problems like [link utility.utilities.call_traits.examples.refs "references to references"]
+never occur, and that parameters are passed in the most efficient
+manner possible, as in the [link utility.utilities.call_traits.examples examples]. In each
+case, if your existing practice is to use the type defined on the
+left, then replace it with the __call_traits__ defined type on the
+right.
+
+Note that for compilers that do not support either partial
+specialization or member templates, no benefit will occur from
+using __call_traits__: the __call_traits__ defined types will always be
+the same as the existing practice in this case. In addition if
+only member templates and not partial template specialisation is
+support by the compiler (for example Visual C++ 6) then
+__call_traits__ cannot be used with array types, although it can still be
+used to solve the reference to reference problem.
+
+[table __call_traits__ types
+    [[Existing practice] [__call_traits__ equivalent] [Description] [Notes]]
+    [
+        [`T`
+
+          (return by value)
+        ]
+        [
+            __call_traits_T__`::value_type`
+        ]
+        [
+            Defines a type that represents the "value" of type `T`.
+
+            Use this for functions that return by value, or possibly for stored values of type `T`.
+        ]
+        [2]
+    ]
+    [
+        [`T&`
+
+          (return value)
+        ]
+        [
+            __call_traits_T__`::reference`
+        ]
+        [
+            Defines a type that represents a reference to type `T`.
+
+            Use for functions that would normally return a `T&`.
+        ]
+        [1]
+    ]
+    [
+        [`const T&`
+
+          (return value)
+        ]
+        [
+            __call_traits_T__`::const_reference`
+        ]
+        [
+            Defines a type that represents a constant reference to type `T`.
+
+            Use for functions that would normally return a `const T&`.
+        ]
+        [1]
+    ]
+    [
+        [`const T&`
+
+          (function parameter)
+        ]
+        [
+            __call_traits_T__`::param_type`
+        ]
+        [
+            Defines a type that represents the "best" way to pass a parameter of type `T` to a function.
+        ]
+        [1,3]
+    ]
+]
+
+Notes:
+
+# If `T` is already reference type, then __call_traits__ is
+        defined such that [link utility.utilities.call_traits.examples.refs "references to references"]
+        do not occur (requires partial specialization).
+# If `T` is an array type, then __call_traits__ defines `value_type`
+        as a "constant pointer to type" rather than an
+        "array of type" (requires partial specialization).
+        Note that if you are using `value_type` as a stored value
+        then this will result in storing a "constant pointer to
+        an array" rather than the array itself. This may or may
+        not be a good thing depending upon what you actually
+        need (in other words take care!).
+# If `T` is a small built in type or a pointer, then `param_type`
+        is defined as `T const`, instead of `T const&`. This can
+        improve the ability of the compiler to optimize loops in
+        the body of the function if they depend upon the passed
+        parameter, the semantics of the passed parameter is
+        otherwise unchanged (requires partial specialization).
+
+
+[endsect]
+[section Copy constructibility]
+
+The following table defines which __call_traits__ types can always
+be copy-constructed from which other types:
+
+[table Which __call_traits__ types can always be copy-constructed from which other types
+    [[]          [To `T`] [To `value_type`] [To `reference`] [To `const_reference`] [To `param_type`]]
+    [[From `T`]    [iff `T` is copy constructible] [iff `T` is copy constructible] [Yes] [Yes] [Yes]]
+    [[From `value_type`]    [iff `T` is copy constructible] [iff `T` is copy constructible] [No] [No] [Yes]]
+    [[From `reference`]    [iff `T` is copy constructible] [iff `T` is copy constructible] [Yes] [Yes] [Yes]]
+    [[From `const_reference`]    [iff `T` is copy constructible] [No] [No] [Yes] [Yes]]
+    [[From `param_type`]    [iff `T` is copy constructible] [iff `T` is copy constructible] [No] [No] [Yes]]
+]
+
+If `T` is an assignable type the following assignments are possible:
+
+[table Which __call_traits__ types are assignable from which other types
+    [[]          [To `T`] [To `value_type`] [To `reference`] [To `const_reference`] [To `param_type`]]
+    [[From `T`]    [Yes] [Yes] [-] [-] [-]]
+    [[From `value_type`]    [Yes] [Yes] [-] [-] [-]]
+    [[From `reference`]    [Yes] [Yes] [-] [-] [-]]
+    [[From `const_reference`]    [Yes] [Yes] [-] [-] [-]]
+    [[From `param_type`]    [Yes] [Yes] [-] [-] [-]]
+]
+[endsect]
+
+[section:examples Examples]
+
+The following table shows the effect that __call_traits__ has on
+various types.
+
+[table Examples of __call_traits__ types
+    [[]          [__call_traits__::`value_type`] [__call_traits__::`reference`] [__call_traits__::`const_reference`] [__call_traits__::`param_type`] [Applies to:]]
+    [[From `my_class`]    [`my_class`] [`my_class&`] [`const my_class&`] [`my_class const&`] [All user-defined types]]
+    [[From `int`]    [`int`] [`int&`] [`const int&`] [`int const`] [All small built-in types]]
+    [[From `int*`]    [`int*`] [`int*&`] [`int* const &`] [`int* const`] [All pointer types]]
+    [[From `int&`]    [`int&`] [`int&`] [`const int&`] [`int&`] [All reference types]]
+    [[From `const int&`]    [`const int&`] [`const int&`] [`const int&`] [`const int&`] [All constant reference types]]
+    [[From `int[3]`]    [`const int*`] [`int(&)[3]`] [`const int(&)[3]`] [`const int* const`] [All array types]]
+    [[From `const int[3]`]    [`const int*`] [`const int(&)[3]`] [`const int(&)[3]`] [`const int* const`] [All constant array types]]
+]
+
+The table assumes the compiler supports partial
+specialization: if it does not then all types behave in
+the same way as the entry for "`my_class`", and
+__call_traits__ can not be used with reference or array types.
+
+[section Example 1:]
+
+The following class is a trivial class that stores some type `T`
+by value (see the [@../../../test/call_traits_test.cpp `call_traits_test.cpp`]
+file). The aim is to illustrate how each of the available
+__call_traits__ `typedef`s may be used:
+
+```
+template <class T>
+struct contained
+{
+   // define our typedefs first, arrays are stored by value
+   // so value_type is not the same as result_type:
+   typedef typename __boost_call_traits__<T>::param_type       param_type;
+   typedef typename __boost_call_traits__<T>::reference        reference;
+   typedef typename __boost_call_traits__<T>::const_reference  const_reference;
+   typedef T                                                value_type;
+   typedef typename __boost_call_traits__<T>::value_type       result_type;
+
+   // stored value:
+   value_type v_;
+
+   // constructors:
+   contained() {}
+   contained(param_type p) : v_(p){}
+   // return byval:
+   result_type value() { return v_; }
+   // return by_ref:
+   reference get() { return v_; }
+   const_reference const_get()const { return v_; }
+   // pass value:
+   void call(param_type p){}
+
+};
+```
+[endsect]
+
+[section:refs Example 2 (the reference to reference problem):]
+
+Consider the definition of __std_binder1st__:
+
+```
+template <class Operation>
+class binder1st :
+   public __std_unary_function__<typename Operation::second_argument_type, typename Operation::result_type>
+{
+protected:
+   Operation op;
+   typename Operation::first_argument_type value;
+public:
+   binder1st(const Operation& x, const typename Operation::first_argument_type& y);
+   typename Operation::result_type operator()(const typename Operation::second_argument_type& x) const;
+};
+```
+
+Now consider what happens in the relatively common case that
+the functor takes its second argument as a reference, that
+implies that `Operation::second_argument_type` is a
+reference type, `operator()` will now end up taking a
+reference to a reference as an argument, and that is not
+currently legal. The solution here is to modify `operator()`
+to use __call_traits__:
+
+```
+typename Operation::result_type operator()(typename __call_traits__<typename Operation::second_argument_type>::param_type x) const;
+```
+
+Now in the case that `Operation::second_argument_type`
+is a reference type, the argument is passed as a reference, and
+the no "reference to reference" occurs.
+
+[endsect]
+
+[section:example3 Example 3 (the `make_pair` problem):]
+
+If we pass the name of an array as one (or both) arguments to `__std_make_pair__`,
+then template argument deduction deduces the passed parameter as
+"const reference to array of `T`", this also applies to
+string literals (which are really array literals). Consequently
+instead of returning a pair of pointers, it tries to return a
+pair of arrays, and since an array type is not copy-constructible
+the code fails to compile. One solution is to explicitly cast the
+arguments to __std_make_pair__ to pointers, but __call_traits__ provides a
+better automatic solution that works safely even in generic code where the
+cast might do the wrong thing:
+
+```
+template <class T1, class T2>
+__std_pair__<
+   typename __boost_call_traits__<T1>::value_type,
+   typename __boost_call_traits__<T2>::value_type>
+      make_pair(const T1& t1, const T2& t2)
+{
+   return __std_pair__<
+      typename __boost_call_traits__<T1>::value_type,
+      typename __boost_call_traits__<T2>::value_type>(t1, t2);
+}
+```
+
+Here, the deduced argument types will be automatically
+degraded to pointers if the deduced types are arrays, similar
+situations occur in the standard binders and adapters: in
+principle in any function that "wraps" a temporary
+whose type is deduced. Note that the function arguments to
+__std_make_pair__ are not expressed in terms of __call_traits__: doing so
+would prevent template argument deduction from functioning.
+[endsect]
+
+[section:example4 Example 4 (optimising fill):]
+
+The __call_traits__ template will "optimize" the passing
+of a small built-in type as a function parameter. This mainly has
+an effect when the parameter is used within a loop body.
+
+In the following example (see [@boost:/libs/type_traits/examples/fill_example.cpp `fill_example.cpp`]),
+a version of __std_fill__ is optimized in two ways: if the type
+passed is a single byte built-in type then __std_memset__ is used to
+effect the fill, otherwise a conventional C++ implementation is
+used, but with the passed parameter "optimized" using
+__call_traits__:
+
+```
+template <bool opt>
+struct filler
+{
+   template <typename I, typename T>
+   static void do_fill(I first, I last, typename __boost_call_traits__<T>::param_type val)
+   {
+      while(first != last)
+      {
+         *first = val;
+         ++first;
+      }
+   }
+};
+
+template <>
+struct filler<true>
+{
+   template <typename I, typename T>
+   static void do_fill(I first, I last, T val)
+   {
+      __std_memset__(first, val, last-first);
+   }
+};
+
+template <class I, class T>
+inline void fill(I first, I last, const T& val)
+{
+   enum { can_opt = boost::is_pointer<I>::value
+                   && boost::is_arithmetic<T>::value
+                   && (sizeof(T) == 1) };
+   typedef filler<can_opt> filler_t;
+   filler_t::template do_fill<I,T>(first, last, val);
+}
+```
+
+The reason that this is "optimal" for small built-in types is that
+with the value passed as `T const` instead of `const T&` the compiler is
+able to tell both that the value is constant and that it is free
+of aliases. With this information the compiler is able to cache
+the passed value in a register, unroll the loop, or use
+explicitly parallel instructions: if any of these are supported.
+Exactly how much mileage you will get from this depends upon your
+compiler - we could really use some accurate benchmarking
+software as part of boost for cases like this.
+
+Note that the function arguments to fill are not expressed in
+terms of __call_traits__: doing so would prevent template argument
+deduction from functioning. Instead fill acts as a "thin
+wrapper" that is there to perform template argument
+deduction, the compiler will optimise away the call to fill all
+together, replacing it with the call to `filler<>::do_fill`,
+which does use __call_traits__.
+
+[endsect]
+[endsect]
+
+[section Rationale]
+
+The following notes are intended to briefly describe the
+rationale behind choices made in __call_traits__.
+
+All user-defined types follow "existing practice" and need no comment.
+
+Small built-in types, what the standard calls [@https://en.cppreference.com/w/cpp/language/types fundamental
+types], differ from existing practice only in the `param_type`
+`typedef`. In this case passing `T const` is compatible
+with existing practice, but may improve performance in some cases
+(see [link utility.utilities.call_traits.examples.example4 Example 4]). In any case this should never
+be any worse than existing practice.
+
+Pointers follow the same rationale as small built-in types.
+
+For reference types the rationale follows [link utility.utilities.call_traits.examples.refs Example 2]
+- references to references are not allowed, so the __call_traits__
+members must be defined such that these problems do
+not occur. There is a proposal to modify the language such that
+"a reference to a reference is a reference" (issue #106,
+submitted by Bjarne Stroustrup). __call_traits_T__`::value_type`
+and __call_traits_T__`::param_type` both provide the same effect
+as that proposal, without the need for a language change. In
+other words, it's a workaround.
+
+For array types, a function that takes an array as an argument
+will degrade the array type to a pointer type: this means that
+the type of the actual parameter is different from its declared
+type, something that can cause endless problems in template code
+that relies on the declared type of a parameter.
+
+For example:
+
+```
+template <class T>
+struct A
+{
+   void foo(T t);
+};
+```
+
+In this case if we instantiate `A<int[2]>` then the declared type of
+the parameter passed to member function `foo` is `int[2]`, but its
+actual type is `const int*`. If we try to use the type `T` within the
+function body, then there is a strong likelihood that our code will not compile:
+
+```
+template <class T>
+void A<T>::foo(T t)
+{
+   T dup(t); // doesn't compile for case that T is an array.
+}
+```
+
+By using __call_traits__ the degradation from array to pointer is
+explicit, and the type of the parameter is the same as it's
+declared type:
+
+```
+template <class T>
+struct A
+{
+   void foo(typename __call_traits__<T>::value_type t);
+};
+
+template <class T>
+void A<T>::foo(typename __call_traits__<T>::value_type t)
+{
+   typename __call_traits__<T>::value_type dup(t); // OK even if T is an array type.
+}
+```
+
+For `value_type` (return by value), again only a pointer may be
+returned, not a copy of the whole array, and again __call_traits__
+makes the degradation explicit. The `value_type` member is useful
+whenever an array must be explicitly degraded to a pointer -
+[link utility.utilities.call_traits.examples.example3 Example 3] provides the test case.
+
+Footnote: the array specialisation for __call_traits__ is the least
+well understood of all the __call_traits__ specialisations. If the given
+semantics cause specific problems for you, or does not solve a particular
+array-related problem, then I would be interested to hear about
+it. Most people though will probably never need to use this
+specialisation.
+
+[endsect]
+
+[/===============]
+[xinclude tmp/call_traits_reference.xml]
+[/===============]
+
+[endsect]

doc/compressed_pair.qbk

@@ -0,0 +1,98 @@
+[/
+  Copyright 2000 Beman Dawes & John Maddock.
+  Copyright (c) 2021, Alan Freitas
+
+  Distributed under the Boost Software License, Version 1.0.
+
+  See accompanying file LICENSE_1_0.txt
+  or copy at http://boost.org/LICENSE_1_0.txt
+]
+
+[section:compressed_pair Compressed Pair]
+
+[section Introduction]
+
+All of the contents of [@../../../../boost/compressed_pair.hpp `<boost/compressed_pair.hpp>`] are defined inside
+`namespace boost`.
+
+The class __compressed_pair__ is very similar to __std_pair__. However, if either of
+the template arguments are empty classes, then the
+[@https://en.cppreference.com/w/cpp/language/ebo ['empty base-class optimisation]]
+is applied to compress the size of the pair.
+
+[endsect]
+
+[section Synopsis]
+
+```cpp
+template <class T1, class T2>
+class __compressed_pair__
+{
+public:
+    typedef T1                                                 first_type;
+    typedef T2                                                 second_type;
+    typedef typename __call_traits__<first_type>::param_type       first_param_type;
+    typedef typename __call_traits__<second_type>::param_type      second_param_type;
+    typedef typename __call_traits__<first_type>::reference        first_reference;
+    typedef typename __call_traits__<second_type>::reference       second_reference;
+    typedef typename __call_traits__<first_type>::const_reference  first_const_reference;
+    typedef typename __call_traits__<second_type>::const_reference second_const_reference;
+
+             compressed_pair() : base() {}
+             compressed_pair(first_param_type x, second_param_type y);
+    explicit compressed_pair(first_param_type x);
+    explicit compressed_pair(second_param_type y);
+
+    compressed_pair& operator=(const compressed_pair&);
+
+    first_reference       first();
+    first_const_reference first() const;
+
+    second_reference       second();
+    second_const_reference second() const;
+
+    void swap(compressed_pair& y);
+};
+```
+
+The two members of the pair can be accessed using the member functions
+`first()` and `second()`. Note that not all member functions can be
+instantiated for all template parameter types. In particular
+__compressed_pair__ can be instantiated for reference and array types,
+however in these cases the range of constructors that can be used is
+limited. If types `T1` and `T2` are the same type, then there is only
+one version of the single-argument constructor, and this constructor
+initialises both values in the pair to the passed value.
+
+Note that if either member is a [@https://en.cppreference.com/w/cpp/named_req/PODType POD]
+type, then that member is not zero-initialized by the __compressed_pair__ default constructor:
+it is up to you to supply an initial value for these types if you want them to have
+a default value.
+
+Note that __compressed_pair__ can not be instantiated if either of the
+template arguments is a union type, unless there is compiler support for
+[@boost:/libs/type_traits/index.html `boost::is_union`], or
+if [@boost:/libs/type_traits/index.html `boost::is_union`] is
+specialised for the union type.
+
+Finally, a word of caution for Visual C++ 6 users: if either argument is an
+empty type, then assigning to that member will produce memory corruption,
+unless the empty type has a "do nothing" assignment operator defined. This
+is due to a bug in the way VC6 generates implicit assignment operators.
+
+[endsect]
+
+[/===============]
+[xinclude tmp/compressed_pair_reference.xml]
+[/===============]
+
+[section Acknowledgments]
+
+Based on contributions by Steve Cleary, Beman Dawes, Howard Hinnant and
+John Maddock.
+
+Maintained by [@mailto:john@johnmaddock.co.uk John Maddock].
+
+[endsect]
+
+[endsect]

doc/in_place_factory.qbk

@@ -0,0 +1,306 @@
+[/
+ / Copyright (c) 2012 Marshall Clow
+ / Copyright (c) 2021, Alan Freitas
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[/===============]
+[section:in_place_factory In-place Factory]
+[/===============]
+
+[section Introduction]
+
+Suppose we have a class
+
+```
+struct X
+{
+  X ( int, __std_string__ ) ;
+};
+```
+
+And a container for it which supports an empty state. That is, a container which can contain zero objects:
+
+```
+struct C
+{
+   C() : contained_(0) {}
+  ~C() { delete contained_ ; }
+  X* contained_ ;
+};
+```
+
+A container designed to support an empty state typically does not require the contained type to be
+__DefaultConstructible__, but it typically requires it to be __CopyConstructible__ as a mechanism to
+initialize the object to store:
+
+```
+struct C
+{
+   C() : contained_(0) {}
+   C ( X const& v ) : contained_ ( new X(v) ) {}
+  ~C() { delete contained_ ; }
+  X* contained_ ;
+};
+```
+
+There is a subtle problem with this: since the mechanism used to initialize the stored object is copy construction,
+there must exist a previously constructed source object to copy from. This object is likely to be temporary and serve
+no purpose besides being the source:
+
+```
+void foo()
+{
+  // Temporary object created.
+  C c( X(123,"hello") ) ;
+}
+```
+
+A solution to this problem is to support direct construction of the contained
+object right in the container's storage.
+
+In this scheme, the user supplies the arguments for the `X` constructor
+directly to the container:
+
+```
+struct C
+{
+   C() : contained_(0) {}
+   C ( X const& v ) : contained_ ( new X(v) ) {}
+   C ( int a0, __std_string__ a1 ) : contained_ ( new X(a0,a1) ) {}
+  ~C() { delete contained_ ; }
+  X* contained_ ;
+};
+```
+
+```
+void foo()
+{
+  // Wrapped object constructed in-place
+  // No temporary created.
+  C c(123,"hello");
+}
+```
+
+Clearly, this solution does not scale well since the container must duplicate all the constructor overloads
+from the contained type, or at least all those which are to be supported directly in the container.
+
+[endsect]
+[section Framework]
+
+This library proposes a framework to allow some containers to directly construct contained objects in-place without requiring
+the entire set of constructor overloads from the contained type. It also allows the container to remove the __CopyConstructible__
+requirement from the contained type since objects can be directly constructed in-place without need of a copy.
+
+The only requirement on the container is that it must provide proper storage. That is, the container should be
+correctly aligned and sized. Naturally, the container will typically support uninitialized storage to avoid the
+in-place construction to override a fully-constructed object, as this would defeat the purpose of in-place construction.
+
+For this purpose, the framework provides two concepts called: InPlaceFactories and TypedInPlaceFactories.
+Helpers to declare these classes are declared in [@../../../../boost/utility/in_place_factory.hpp `<boost/utility/in_place_factory.hpp>`]
+and [@../../../../boost/utility/typed_in_place_factory.hpp `<boost/utility/typed_in_place_factory.hpp>`].
+
+Essentially, these classes hold a sequence of actual parameters and a method to construct an object in place using these parameters.
+Each member of the family differs only in the number and type of the parameter list. The first family
+takes the type of the object to construct directly in method provided for that
+purpose, whereas the second family incorporates that type in the factory class
+itself. From the container point of view, using the framework amounts to calling the
+factory's method to contruct the object in place. From the user point of view, it amounts to creating
+the right factory object to hold the parameters and pass it to the container.
+
+The following simplified example shows the basic idea. A complete example follows the formal specification of the framework:
+
+```
+struct C
+{
+   template <class InPlaceFactory>
+   C ( InPlaceFactory const& aFactory )
+    :
+    contained_ ( uninitialized_storage() )
+   {
+     aFactory.template apply<X>(contained_);
+   }
+
+  ~C()
+  {
+    contained_ -> X::~X();
+    delete[] contained_ ;
+  }
+
+  char* uninitialized_storage() { return new char[sizeof(X)] ; }
+
+  char* contained_ ;
+};
+
+void foo()
+{
+  C c( in_place(123,"hello") ) ;
+}
+
+```
+
+[endsect]
+[section Specification]
+
+The following is the first member of the family of `InPlaceFactory` classes, along with its corresponding helper template function.
+The rest of the family varies only in the number and type of template and constructor parameters.
+
+
+```
+namespace boost {
+
+struct __in_place_factory_base__ {};
+
+template<class A0>
+class in_place_factory : public __in_place_factory_base__
+{
+  public:
+    in_place_factory ( A0 const& a0 ) : m_a0(a0) {}
+
+    template< class T >
+    void apply ( void* address ) const
+    {
+      new (address) T(m_a0);
+    }
+
+  private:
+      A0 const& m_a0 ;
+};
+
+template<class A0>
+in_place_factory<A0> in_place ( A0 const& a0 )
+{
+  return in_place_factory<A0>(a0);
+}
+
+}
+```
+
+Similarly, the following is the first member of the family of `typed_in_place_factory` classes, along with its corresponding
+helper template function. The rest of the family varies only in the number and type of template and constructor parameters.
+
+```
+namespace boost {
+
+struct __typed_in_place_factory_base__ {};
+
+template<class T, class A0>
+class typed_in_place_factory : public __typed_in_place_factory_base__
+{
+  public:
+    typed_in_place_factory ( A0 const& a0 ) : m_a0(a0) {}
+
+    void apply ( void* address ) const
+    {
+      new (address) T(m_a0);
+    }
+
+  private:
+    A0 const& m_a0 ;
+};
+
+template<class T, class A0>
+typed_in_place_factory<A0> in_place ( A0 const& a0 )
+{
+  return typed_in_place_factory<T,A0>(a0);
+}
+}
+```
+
+As you can see, the `in_place_factory` and `typed_in_place_factory` template classes vary only in the way they specify
+the target type: in the first family, the type is given as a template argument to the apply member function while in the
+second it is given directly as part of the factory class.
+
+When the container holds a unique non-polymorphic type, such as the case of [@boost:/libs/optional/index.html Boost.Optional],
+it knows the exact dynamic-type of the contained object and can pass it to the `apply()` method of a non-typed factory.
+In this case, end users can use an `in_place_factory` instance which can be constructed without the type of the object to construct.
+
+However, if the container holds heterogeneous or polymorphic objects, such as the case of [@boost:/libs/variant/index.html Boost.Variant],
+the dynamic-type of the object to be constructed must be known by the factory. In this case, end users must use a `typed_in_place_factory`
+instead.
+
+[endsect]
+[section Container-side Usage]
+
+As shown in the introductory simplified example, the container class must contain methods that accept an instance of
+these factories and pass the object's storage to the factory's apply method.
+
+However, the type of the factory class cannot be completely specified in the container class because that would
+defeat the whole purpose of the factories which is to allow the container to accept a variadic argument list
+for the constructor of its contained object.
+
+The correct function overload must be based on the only distinctive and common
+characteristic of all the classes in each family: the base class.
+
+Depending on the container class, you can use `enable_if` to generate the right overload, or use the following
+dispatch technique, which is used in the [@boost:/libs/optional/index.html Boost.Optional] class:
+
+
+```
+struct C
+{
+   C() : contained_(0) {}
+   C ( X const& v ) : contained_ ( new X(v) ) {}
+
+   template <class Expr>
+   C ( Expr const& expr )
+    :
+    contained_ ( uninitialized_storage() )
+   {
+    construct(expr,&expr);
+   }
+
+  ~C() { delete contained_ ; }
+
+  template<class InPlaceFactory>
+  void construct ( InPlaceFactory const& aFactory, const boost::__in_place_factory_base__* )
+  {
+    aFactory.template apply<X>(contained_);
+  }
+
+  template<class TypedInPlaceFactory>
+  void construct ( TypedInPlaceFactory const& aFactory, const boost::__typed_in_place_factory_base__* )
+  {
+    aFactory.apply(contained_);
+  }
+
+  X* uninitialized_storage() { return static_cast<X*>(new char[sizeof(X)]) ; }
+
+  X* contained_ ;
+};
+```
+
+[endsect]
+[section User-side Usage]
+
+End users pass to the container an instance of a factory object holding the actual parameters needed to construct the
+contained object directly within the container. For this, the helper template function `in_place` is used.
+
+The call `in_place(a0,a1,a2,...,an)` constructs a (non-typed) `in_place_factory` instance with the given argument list.
+
+The call `in_place<T>(a0,a1,a2,...,an)` constructs a `typed_in_place_factory` instance with the given argument list for the
+type `T`.
+
+```
+void foo()
+{
+  C a( in_place(123, "hello") ) ;    // in_place_factory passed
+  C b( in_place<X>(456, "world") ) ; // typed_in_place_factory passed
+}
+
+```
+
+[endsect]
+
+[/===============]
+[xinclude tmp/in_place_factory_reference.xml]
+[/===============]
+
+[section Acknowledgments]
+
+Copyright Fernando Luis Cacciola Carballal, 2004
+
+[endsect]
+[endsect]

doc/logo.svg

@@ -0,0 +1,539 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="744.09448819"
+   height="1052.3622047"
+   id="svg6858"
+   version="1.1"
+   inkscape:version="0.48.4 r9939"
+   sodipodi:docname="utility.svg">
+  <defs
+     id="defs6860">
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient4453-7-8-6-7-3-5"
+       id="linearGradient10687-2-5"
+       gradientUnits="userSpaceOnUse"
+       x1="753.02301"
+       y1="3132.0801"
+       x2="1146.25"
+       y2="3132.0801" />
+    <linearGradient
+       id="linearGradient4453-7-8-6-7-3-5">
+      <stop
+         style="stop-color:#aac4dd;stop-opacity:1;"
+         offset="0"
+         id="stop4455-61-8-7-1-2-8" />
+      <stop
+         style="stop-color:#c2dbe9;stop-opacity:1;"
+         offset="1"
+         id="stop4457-4-1-9-1-12-1" />
+    </linearGradient>
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient4453-7-8-6-7-3-5"
+       id="linearGradient10685-2-2"
+       gradientUnits="userSpaceOnUse"
+       x1="753.02301"
+       y1="3132.0801"
+       x2="1146.25"
+       y2="3132.0801" />
+    <linearGradient
+       id="linearGradient6749">
+      <stop
+         style="stop-color:#aac4dd;stop-opacity:1;"
+         offset="0"
+         id="stop6751" />
+      <stop
+         style="stop-color:#c2dbe9;stop-opacity:1;"
+         offset="1"
+         id="stop6753" />
+    </linearGradient>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath3387-3-6-4-2-8-4">
+      <path
+         inkscape:connector-curvature="0"
+         d="m 862.109,3289.75 -109.086,-190.45 69.122,-124.42 164.511,-0.47 c 0,0 111.044,188.28 116.564,197.63 7.66,0 43.03,0 43.03,0 l -67.03,117.71 -217.111,0 z"
+         id="path3389-2-0-7-7-8-9" />
+    </clipPath>
+    <linearGradient
+       y2="3132.0801"
+       x2="1146.25"
+       y1="3132.0801"
+       x1="753.02301"
+       gradientUnits="userSpaceOnUse"
+       id="linearGradient4492-8-8"
+       xlink:href="#linearGradient4453-7-8-6-7-3-5"
+       inkscape:collect="always" />
+    <linearGradient
+       id="linearGradient6758">
+      <stop
+         style="stop-color:#aac4dd;stop-opacity:1;"
+         offset="0"
+         id="stop6760" />
+      <stop
+         style="stop-color:#c2dbe9;stop-opacity:1;"
+         offset="1"
+         id="stop6762" />
+    </linearGradient>
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient4453-7-8-6-7-3-5"
+       id="linearGradient10691-7-8"
+       gradientUnits="userSpaceOnUse"
+       x1="1026.6899"
+       y1="2937.73"
+       x2="1463.14"
+       y2="2937.73" />
+    <linearGradient
+       id="linearGradient6765">
+      <stop
+         style="stop-color:#aac4dd;stop-opacity:1;"
+         offset="0"
+         id="stop6767" />
+      <stop
+         style="stop-color:#c2dbe9;stop-opacity:1;"
+         offset="1"
+         id="stop6769" />
+    </linearGradient>
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient4453-7-8-6-7-3-5"
+       id="linearGradient10689-4-2"
+       gradientUnits="userSpaceOnUse"
+       x1="1026.6899"
+       y1="2937.73"
+       x2="1463.14"
+       y2="2937.73" />
+    <linearGradient
+       id="linearGradient6772">
+      <stop
+         style="stop-color:#aac4dd;stop-opacity:1;"
+         offset="0"
+         id="stop6774" />
+      <stop
+         style="stop-color:#c2dbe9;stop-opacity:1;"
+         offset="1"
+         id="stop6776" />
+    </linearGradient>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath3369-1-5-6-1-0-7">
+      <path
+         inkscape:connector-curvature="0"
+         d="m 1131.64,3128.5 -104.95,-181.12 116.38,-200.42 208.05,0.94 112.02,191.63 -112.08,188.97 -219.42,0 z"
+         id="path3371-89-4-1-6-0-1" />
+    </clipPath>
+    <linearGradient
+       y2="2937.73"
+       x2="1463.14"
+       y1="2937.73"
+       x1="1026.6899"
+       gradientUnits="userSpaceOnUse"
+       id="linearGradient4498-5-7"
+       xlink:href="#linearGradient4453-7-8-6-7-3-5"
+       inkscape:collect="always" />
+    <linearGradient
+       id="linearGradient6781">
+      <stop
+         style="stop-color:#aac4dd;stop-opacity:1;"
+         offset="0"
+         id="stop6783" />
+      <stop
+         style="stop-color:#c2dbe9;stop-opacity:1;"
+         offset="1"
+         id="stop6785" />
+    </linearGradient>
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient4459-1-2-8-9-9-5"
+       id="linearGradient10695-9-9"
+       gradientUnits="userSpaceOnUse"
+       x1="646.55499"
+       y1="2736.25"
+       x2="1088.27"
+       y2="2736.25" />
+    <linearGradient
+       id="linearGradient4459-1-2-8-9-9-5">
+      <stop
+         id="stop4461-2-1-5-2-5-0"
+         offset="0"
+         style="stop-color:#839bc2;stop-opacity:1;" />
+      <stop
+         id="stop4463-3-2-8-7-30-3"
+         offset="1"
+         style="stop-color:#9fb6d4;stop-opacity:1;" />
+    </linearGradient>
+    <linearGradient
+       inkscape:collect="always"
+       xlink:href="#linearGradient4459-1-2-8-9-9-5"
+       id="linearGradient10693-9-4"
+       gradientUnits="userSpaceOnUse"
+       x1="646.55499"
+       y1="2736.25"
+       x2="1088.27"
+       y2="2736.25" />
+    <linearGradient
+       id="linearGradient6792">
+      <stop
+         id="stop6794"
+         offset="0"
+         style="stop-color:#839bc2;stop-opacity:1;" />
+      <stop
+         id="stop6796"
+         offset="1"
+         style="stop-color:#9fb6d4;stop-opacity:1;" />
+    </linearGradient>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath3351-4-7-3-5-95-0">
+      <path
+         inkscape:connector-curvature="0"
+         d="m 757.242,2926.25 -110.687,-189.11 110.656,-190.89 219.437,0 111.622,189.1 -111.59,190.9 -219.438,0 z"
+         id="path3353-1-9-3-4-1-1" />
+    </clipPath>
+    <linearGradient
+       y2="2736.25"
+       x2="1088.27"
+       y1="2736.25"
+       x1="646.55499"
+       gradientUnits="userSpaceOnUse"
+       id="linearGradient4510-1-5"
+       xlink:href="#linearGradient4459-1-2-8-9-9-5"
+       inkscape:collect="always" />
+    <linearGradient
+       id="linearGradient6801">
+      <stop
+         id="stop6803"
+         offset="0"
+         style="stop-color:#839bc2;stop-opacity:1;" />
+      <stop
+         id="stop6805"
+         offset="1"
+         style="stop-color:#9fb6d4;stop-opacity:1;" />
+    </linearGradient>
+    <radialGradient
+       inkscape:collect="always"
+       xlink:href="#radialGradient3327-8-4-8-0-2-4"
+       id="radialGradient10699-1-3"
+       gradientUnits="userSpaceOnUse"
+       cx="997.46997"
+       cy="2896.25"
+       fx="997.46997"
+       fy="2896.25"
+       r="583.73999" />
+    <radialGradient
+       fx="0"
+       fy="0"
+       cx="0"
+       cy="0"
+       r="1"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(58.375,0,0,-58.375,99.75,289.625)"
+       spreadMethod="pad"
+       id="radialGradient3327-8-4-8-0-2-4">
+      <stop
+         style="stop-opacity:1;stop-color:#aeaeb3"
+         offset="0"
+         id="stop3329-7-0-1-0-33-2" />
+      <stop
+         style="stop-opacity:1;stop-color:#ffffff"
+         offset="0.949438"
+         id="stop3331-4-3-0-0-97-3" />
+      <stop
+         style="stop-opacity:1;stop-color:#ffffff"
+         offset="1"
+         id="stop3333-2-4-9-7-2-2" />
+    </radialGradient>
+    <radialGradient
+       r="583.73999"
+       fy="2896.25"
+       fx="997.46997"
+       cy="2896.25"
+       cx="997.46997"
+       gradientUnits="userSpaceOnUse"
+       id="radialGradient13050"
+       xlink:href="#radialGradient3327-8-4-8-0-2-4"
+       inkscape:collect="always" />
+    <radialGradient
+       fx="0"
+       fy="0"
+       cx="0"
+       cy="0"
+       r="1"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(58.375,0,0,-58.375,99.75,289.625)"
+       spreadMethod="pad"
+       id="radialGradient6813">
+      <stop
+         style="stop-opacity:1;stop-color:#aeaeb3"
+         offset="0"
+         id="stop6815" />
+      <stop
+         style="stop-opacity:1;stop-color:#ffffff"
+         offset="0.949438"
+         id="stop6817" />
+      <stop
+         style="stop-opacity:1;stop-color:#ffffff"
+         offset="1"
+         id="stop6819" />
+    </radialGradient>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath3323-7-2-4-5-3-4">
+      <path
+         inkscape:connector-curvature="0"
+         d="m 997.469,2312.51 c -322.379,0 -583.739,261.36 -583.739,583.74 0,322.38 261.36,583.74 583.739,583.74 322.381,0 583.741,-261.36 583.741,-583.74 0,-322.38 -261.36,-583.74 -583.741,-583.74"
+         id="path3325-9-2-9-5-04-9" />
+    </clipPath>
+    <radialGradient
+       r="583.73999"
+       fy="2896.25"
+       fx="997.46997"
+       cy="2896.25"
+       cx="997.46997"
+       gradientUnits="userSpaceOnUse"
+       id="radialGradient4516-8-2"
+       xlink:href="#radialGradient3327-8-4-8-0-2-4"
+       inkscape:collect="always" />
+    <radialGradient
+       fx="0"
+       fy="0"
+       cx="0"
+       cy="0"
+       r="1"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(58.375,0,0,-58.375,99.75,289.625)"
+       spreadMethod="pad"
+       id="radialGradient6824">
+      <stop
+         style="stop-opacity:1;stop-color:#aeaeb3"
+         offset="0"
+         id="stop6826" />
+      <stop
+         style="stop-opacity:1;stop-color:#ffffff"
+         offset="0.949438"
+         id="stop6828" />
+      <stop
+         style="stop-opacity:1;stop-color:#ffffff"
+         offset="1"
+         id="stop6830" />
+    </radialGradient>
+    <radialGradient
+       r="583.73999"
+       fy="2896.25"
+       fx="997.46997"
+       cy="2896.25"
+       cx="997.46997"
+       gradientUnits="userSpaceOnUse"
+       id="radialGradient6856"
+       xlink:href="#radialGradient3327-8-4-8-0-2-4"
+       inkscape:collect="always" />
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="1.4"
+     inkscape:cx="234.05635"
+     inkscape:cy="581.46313"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:window-width="1680"
+     inkscape:window-height="982"
+     inkscape:window-x="-8"
+     inkscape:window-y="-8"
+     inkscape:window-maximized="1">
+    <inkscape:grid
+       type="xygrid"
+       id="grid3066" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata6863">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <g
+       id="g3319-1-2-5-1-4-4"
+       transform="matrix(0.10419818,0,0,-0.10419818,137.10955,897.00327)"
+       style="fill:url(#radialGradient10699-1-3);fill-opacity:1"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523">
+      <g
+         clip-path="url(#clipPath3323-7-2-4-5-3-4)"
+         id="g3321-9-2-7-4-3-9"
+         style="fill:url(#radialGradient6856);fill-opacity:1">
+        <path
+           id="path3335-8-7-3-8-92-0"
+           style="fill:url(#radialGradient4516-8-2);fill-opacity:1;fill-rule:nonzero;stroke:none"
+           d="m 997.469,2312.51 c -322.379,0 -583.739,261.36 -583.739,583.74 0,322.38 261.36,583.74 583.739,583.74 322.381,0 583.741,-261.36 583.741,-583.74 0,-322.38 -261.36,-583.74 -583.741,-583.74"
+           inkscape:connector-curvature="0" />
+      </g>
+    </g>
+    <g
+       id="g3347-6-8-3-7-4-4"
+       transform="matrix(0.125,0,0,-0.125,112.08304,959.82207)"
+       style="fill:url(#linearGradient10695-9-9);fill-opacity:1"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523">
+      <g
+         clip-path="url(#clipPath3351-4-7-3-5-95-0)"
+         id="g3349-5-5-4-7-9-4"
+         style="fill:url(#linearGradient10693-9-4);fill-opacity:1">
+        <path
+           id="path3361-0-8-2-9-0-9"
+           style="fill:url(#linearGradient4510-1-5);fill-opacity:1;fill-rule:nonzero;stroke:none"
+           d="m 757.242,2926.25 -110.687,-189.11 110.656,-190.89 219.437,0 111.622,189.1 -111.59,190.9 -219.438,0"
+           inkscape:connector-curvature="0" />
+      </g>
+    </g>
+    <path
+       id="path3363-6-9-0-1-5-8"
+       style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+       d="m 194.34816,617.68335 13.106,-22.3925 25.99649,0 13.21487,22.60874 -13.21487,22.39125 -25.99649,0 -13.106,-22.60749 z m 40.53761,-24.8925 -28.86524,0 -0.72412,1.23749 -13.106,22.39251 -0.73575,1.25625 0.73087,1.26 13.106,22.60744 0.72263,1.24634 28.86374,0 0.72512,-1.22884 13.215,-22.39119 0.74625,-1.265 -0.74,-1.26751 -13.21537,-22.60875 -0.72313,-1.23874"
+       inkscape:connector-curvature="0"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523" />
+    <g
+       id="g3365-0-4-1-9-7-5"
+       transform="matrix(0.125,0,0,-0.125,112.08304,959.82207)"
+       style="fill:url(#linearGradient10691-7-8);fill-opacity:1"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523">
+      <g
+         clip-path="url(#clipPath3369-1-5-6-1-0-7)"
+         id="g3367-2-4-2-8-4-3"
+         style="fill:url(#linearGradient10689-4-2);fill-opacity:1">
+        <path
+           id="path3379-4-6-7-6-7-2"
+           style="fill:url(#linearGradient4498-5-7);fill-opacity:1;fill-rule:nonzero;stroke:none"
+           d="m 1131.64,3128.5 -104.95,-181.12 116.38,-200.42 208.05,0.94 112.02,191.63 -112.08,188.97 -219.42,0"
+           inkscape:connector-curvature="0" />
+      </g>
+    </g>
+    <path
+       id="path3381-6-8-0-0-66-3"
+       style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+       d="m 241.86427,591.39959 12.3925,-21.38999 25.99625,0 13.27125,22.37625 -13.27125,22.7025 -24.56875,0.11 -13.82,-23.79876 z m 39.8125,-23.88999 -28.86125,0 -0.7225,1.24625 -12.3925,21.39 -0.72625,1.255 0.7275,1.25374 13.82,23.79876 0.7275,1.25125 1.44625,-0.006 24.56875,-0.11 1.4275,-0.006 0.72,-1.2325 13.27125,-22.7025 0.7425,-1.27 -0.75125,-1.26625 -13.27125,-22.37625 -0.72625,-1.225"
+       inkscape:connector-curvature="0"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523" />
+    <g
+       id="g3383-5-5-2-2-3-0"
+       transform="matrix(0.125,0,0,-0.125,112.08304,959.82207)"
+       style="fill:url(#linearGradient10687-2-5);fill-opacity:1"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523">
+      <g
+         clip-path="url(#clipPath3387-3-6-4-2-8-4)"
+         id="g3385-0-6-4-8-0-1"
+         style="fill:url(#linearGradient10685-2-2);fill-opacity:1">
+        <path
+           id="path3397-9-6-1-6-9-7"
+           style="fill:url(#linearGradient4492-8-8);fill-opacity:1;fill-rule:nonzero;stroke:none"
+           d="m 862.109,3289.75 -109.086,-190.45 69.122,-124.42 164.511,-0.47 c 0,0 111.044,188.28 116.564,197.63 7.66,0 43.03,0 43.03,0 l -67.03,117.71 -217.111,0"
+           inkscape:connector-curvature="0" />
+      </g>
+    </g>
+    <path
+       id="path3399-6-7-3-2-0-1"
+       style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+       d="m 207.64603,572.41959 12.92424,-22.56624 25.68775,0 6.95625,12.21375 -3.94375,0 -14.56837,24.7025 -19.11525,-0.055 -7.94087,-14.295 z m 40.06574,-25.06624 -28.59012,0 -0.71975,1.2575 -12.92537,22.56625 -0.70112,1.22375 0.68512,1.23249 7.94137,14.295 0.71087,1.2825 1.46638,0.004 19.11525,0.055 1.43212,0.004 0.729,-1.23375 13.84375,-23.47249 6.81625,0 -2.12875,-3.7375 -6.95625,-12.21375 -0.71875,-1.2625"
+       inkscape:connector-curvature="0"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523" />
+    <g
+       transform="matrix(1.25,0,0,-1.25,105.02062,972.84257)"
+       id="g3465-0-8-9"
+       inkscape:export-filename="C:\Users\Adam\Desktop\bg_logo1.png"
+       inkscape:export-xdpi="63.625523"
+       inkscape:export-ydpi="63.625523">
+      <text
+         id="text3467-9-0-8"
+         transform="matrix(1,0,-0.17627963,-1,0,0)"
+         x="116.98372"
+         y="-267.77499"
+         style="font-size:11.81779194px">
+        <tspan
+           sodipodi:role="line"
+           style="font-size:46.39999771px;font-variant:normal;font-weight:normal;writing-mode:lr-tb;fill:#49608a;fill-opacity:1;fill-rule:nonzero;stroke:none;font-family:Denmark;-inkscape-font-specification:Denmark"
+           x="116.98372"
+           y="-267.77499"
+           id="tspan13239">UTILITY</tspan>
+        <tspan
+           sodipodi:role="line"
+           style="font-size:46.39999771px;font-variant:normal;font-weight:normal;writing-mode:lr-tb;fill:#49608a;fill-opacity:1;fill-rule:nonzero;stroke:none;font-family:Denmark;-inkscape-font-specification:Denmark"
+           x="116.98372"
+           y="-209.77499"
+           id="tspan11278-3" />
+      </text>
+      <text
+         id="text3471-0-51-2"
+         transform="matrix(0.99235617,0,-0.17763746,-1.0077027,0,0)"
+         style="font-size:38.40000153px"
+         x="112.74373"
+         y="-306.75479">
+        <tspan
+           id="tspan3473-6-0-9"
+           sodipodi:role="line"
+           style="font-size:38.40000153px;font-variant:normal;font-weight:normal;writing-mode:lr-tb;fill:#49608a;fill-opacity:1;fill-rule:nonzero;stroke:none;font-family:Denmark;-inkscape-font-specification:Denmark"
+           x="112.74373"
+           y="-306.75479">boost</tspan>
+      </text>
+    </g>
+    <path
+       style="fill:#ffffff;fill-opacity:1;stroke:none"
+       d="m 201.43967,613.81579 4.64114,4.2175 3.3738,-3.71306 -0.92817,-0.84354 1.68708,-1.85636 20.53445,20.81026 4.2175,-4.64111 -22.22144,-18.95384 c 0,0 1.69594,-1.83698 2.53062,-2.78454 2.53905,-2.76559 5.98925,-4.72587 5.98925,-4.72587 0,0 -6.03647,0.58224 -8.76507,2.21476 -0.84428,0.92751 -6.75676,7.40649 -6.75676,7.40649 l -0.92819,-0.84355 -3.37382,3.71308"
+       id="path13283"
+       inkscape:connector-curvature="0"
+       sodipodi:nodetypes="cccccccccccccc" />
+    <g
+       id="g3086"
+       transform="matrix(0.99872217,-0.05053738,0.05053738,0.99872217,-31.539183,11.181538)">
+      <path
+         sodipodi:nodetypes="ccccccccc"
+         inkscape:connector-curvature="0"
+         id="path13243"
+         d="m 227.74101,611.16418 -15.09943,12.783 2.55659,3.01989 15.09944,-12.78302 c 3.56324,2.16769 7.58975,-1.2411 7.0464,-5.96538 l -4.02652,3.40879 -2.55659,-3.01989 4.02652,-3.40879 c -3.56324,-2.16769 -8.59639,2.0933 -7.04641,5.9654 z"
+         style="fill:#ffffff;fill-opacity:1;stroke:none" />
+      <path
+         sodipodi:nodetypes="ccccccccc"
+         inkscape:connector-curvature="0"
+         id="path13243-1"
+         d="m 215.25729,626.9851 15.08951,-12.7947 -2.55893,-3.01791 -15.08952,12.79471 c -3.56492,-2.16491 -7.58878,1.24699 -7.04177,5.97085 l 4.02388,-3.41192 2.55892,3.01791 -4.02387,3.41192 c 3.56491,2.16492 8.59476,-2.09997 7.04178,-5.97086 z"
+         style="fill:#ffffff;fill-opacity:1;stroke:none" />
+    </g>
+  </g>
+</svg>

doc/main.qbk

@@ -0,0 +1,233 @@
+[/
+    Copyright (c) 2021, Alan Freitas
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    Official repository: https://github.com/boostorg/utility
+]
+
+[/#############################################
+                  DOCUMENT INFO
+###############################################]
+
+[library Boost.Utility
+    [id utility]
+    [quickbook 1.6]
+    [copyright 2001 Beman Dawes]
+    [purpose Utility Library]
+    [license
+        Distributed under the Boost Software License, Version 1.0.
+        (See accompanying file LICENSE_1_0.txt or copy at
+        [@http://www.boost.org/LICENSE_1_0.txt])
+    ]
+    [authors [Dawes, Beman]]
+    [category template]
+    [category generic]
+]
+
+[template mdash[]'''—''']
+[template ndash[]'''–''']
+[template sect[]'''§''']
+[template hellip[]'''…''']
+
+[template indexterm1[term1]'''<indexterm><primary>'''[term1]'''</primary></indexterm>''']
+[template indexterm2[term1 term2]'''<indexterm><primary>'''[term1]'''</primary><secondary>'''[term2]'''</secondary></indexterm>''']
+
+[template include_file[path][^<'''<ulink url="https://github.com/boostorg/utility/blob/master/include/'''[path]'''">'''[path]'''</ulink>'''>]]
+[template issue[n]'''<ulink url="https://github.com/boostorg/utility/issues/'''[n]'''">#'''[n]'''</ulink>''']
+
+[/ Named Requirements ]
+
+[def __Handler__                ['Handler]]
+[def __Allocator__              [@https://en.cppreference.com/w/cpp/named_req/Allocator ['Allocator]]]
+[def __CopyAssignable__         [@https://en.cppreference.com/w/cpp/named_req/CopyAssignable ['CopyAssignable]]]
+[def __CopyConstructible__      [@https://en.cppreference.com/w/cpp/named_req/CopyConstructible ['CopyConstructible]]]
+[def __Copyable__               [@https://en.cppreference.com/w/cpp/concepts/copyable ['Copyable]]]
+[def __DefaultConstructible__   [@https://en.cppreference.com/w/cpp/named_req/DefaultConstructible ['DefaultConstructible]]]
+[def __Hash__                   [@https://en.cppreference.com/w/cpp/named_req/Hash ['Hash]]]
+[def __InputIterator__          [@https://en.cppreference.com/w/cpp/named_req/InputIterator ['InputIterator]]]
+[def __MoveAssignable__         [@https://en.cppreference.com/w/cpp/named_req/MoveAssignable ['MoveAssignable]]]
+[def __MoveConstructible__      [@https://en.cppreference.com/w/cpp/named_req/MoveConstructible ['MoveConstructible]]]
+[def __RandomAccessIterator__   [@https://en.cppreference.com/w/cpp/named_req/RandomAccessIterator ['RandomAccessIterator]]]
+[def __Regular__                [@https://en.cppreference.com/w/cpp/concepts/regular ['Regular]]]
+[def __Swappable__              [@https://en.cppreference.com/w/cpp/named_req/Swappable ['Swappable]]]
+
+[/ Boost types ]
+[/ (Macros are defined here because these macros are often referenced in other components) ]
+[/ (operators macros link to the a table of operators because there's no doxygen reference for the operators) ]
+
+[def __BOOST_BINARY__ [link utility.utilities.BOOST_BINARY `BOOST_BINARY`]]
+[def __in_place_factory__ [link utility.utilities.in_place_factory `in_place_factory`]]
+
+[def __boost_base_from_member__ [classref boost::base_from_member `boost::base_from_member`]]
+[def __boost_call_traits__ [classref boost::call_traits `boost::call_traits`]]
+[def __boost_result_of__ [classref boost::result_of `boost::result_of`]]
+[def __boost_tr1_result_of__ [classref boost::tr1_result_of `boost::tr1_result_of`]]
+[def __boost_string_view__ [classref boost::basic_string_view `boost::string_view`]]
+[def __boost_basic_string_view__ [classref boost::basic_string_view `boost::basic_string_view`]]
+
+[def __additive1__ [link utility.utilities.operators.arithmetic `additive1`]]
+[def __additive2__ [link utility.utilities.operators.arithmetic `additive2`]]
+[def __arithmetic1__ [link utility.utilities.operators.arithmetic `arithmetic1`]]
+[def __arithmetic2__ [link utility.utilities.operators.arithmetic `arithmetic2`]]
+[def __base_from_member__ [classref boost::base_from_member `base_from_member`]]
+[def __basic_string_ref__ [classref boost::basic_string_ref `basic_string_ref`]]
+[def __basic_string_view__ [classref boost::basic_string_view `basic_string_view`]]
+[def __bidirectional_iteratable__ [link utility.utilities.operators.arithmetic `bidirectional_iteratable`]]
+[def __bidirectional_iterator_helper__ [link utility.utilities.operators.arithmetic `bidirectional_iterator_helper`]]
+[def __bitwise1__ [link utility.utilities.operators.arithmetic `bitwise1`]]
+[def __bitwise2__ [link utility.utilities.operators.arithmetic `bitwise2`]]
+[def __call_traits__ [classref boost::call_traits `call_traits`]]
+[def __call_traits_T__ [classref boost::call_traits `call_traits<T>`]]
+[def __call_traits_lt__T___ [classref boost::call_traits `call_traits<T&>`]]
+[def __call_traits_lt__T_lb_N_rb__gt___ [classref boost::call_traits `call_traits< T[N]>`]]
+[def __call_traits_lt__const_T_lb_N_rb__gt___ [classref boost::call_traits `call_traits< const T[N]>`]]
+[def __compressed_pair__ [classref boost::compressed_pair `compressed_pair`]]
+[def __decrementable__ [link utility.utilities.operators.arithmetic `decrementable`]]
+[def __dereferenceable__ [link utility.utilities.operators.arithmetic `dereferenceable`]]
+[def __equal_pointees__ [link utility.utilities.operators.arithmetic `equal_pointees`]]
+[def __equal_pointees_t__ [link utility.utilities.operators.arithmetic `equal_pointees_t`]]
+[def __equality_comparable1__ [link utility.utilities.operators.arithmetic `equality_comparable1`]]
+[def __equality_comparable2__ [link utility.utilities.operators.arithmetic `equality_comparable2`]]
+[def __equivalent1__ [link utility.utilities.operators.arithmetic `equivalent1`]]
+[def __equivalent2__ [link utility.utilities.operators.arithmetic `equivalent2`]]
+[def __euclidean_ring_operators1__ [link utility.utilities.operators.arithmetic `euclidean_ring_operators1`]]
+[def __euclidean_ring_operators2__ [link utility.utilities.operators.arithmetic `euclidean_ring_operators2`]]
+[def __field_operators1__ [link utility.utilities.operators.arithmetic `field_operators1`]]
+[def __field_operators2__ [link utility.utilities.operators.arithmetic `field_operators2`]]
+[def __forward_iteratable__ [link utility.utilities.operators.arithmetic `forward_iteratable`]]
+[def __forward_iterator_helper__ [link utility.utilities.operators.arithmetic `forward_iterator_helper`]]
+[def __get__ [funcref boost::get `get`]]
+[def __hash_range__ [funcref boost::hash_range `hash_range`]]
+[def __hash_value__ [funcref boost::hash_value `hash_value`]]
+[def __in_place_factory_base__ [classref boost::in_place_factory_base `in_place_factory_base`]]
+[def __incrementable__ [link utility.utilities.operators.arithmetic `incrementable`]]
+[def __indexable__ [link utility.utilities.operators.arithmetic `indexable`]]
+[def __initialized__ [classref boost::initialized `initialized`]]
+[def __initialized_value__ [globalref boost::initialized_value `initialized_value`]]
+[def __initialized_value_t__ [classref boost::initialized_value_t `initialized_value_t`]]
+[def __input_iteratable__ [link utility.utilities.operators.arithmetic `input_iteratable`]]
+[def __input_iterator_helper__ [link utility.utilities.operators.arithmetic `input_iterator_helper`]]
+[def __integer_arithmetic1__ [link utility.utilities.operators.arithmetic `integer_arithmetic1`]]
+[def __integer_arithmetic2__ [link utility.utilities.operators.arithmetic `integer_arithmetic2`]]
+[def __integer_multiplicative1__ [link utility.utilities.operators.arithmetic `integer_multiplicative1`]]
+[def __integer_multiplicative2__ [link utility.utilities.operators.arithmetic `integer_multiplicative2`]]
+[def __is_chained_base__ [link utility.utilities.operators.arithmetic `is_chained_base`]]
+[def __less_pointees__ [funcref boost::less_pointees `less_pointees`]]
+[def __less_pointees_t__ [class boost::less_pointees_t `less_pointees_t`]]
+[def __less_than_comparable1__ [link utility.utilities.operators.arithmetic `less_than_comparable1`]]
+[def __less_than_comparable2__ [link utility.utilities.operators.arithmetic `less_than_comparable2`]]
+[def __multiplicative1__ [link utility.utilities.operators.arithmetic `multiplicative1`]]
+[def __multiplicative2__ [link utility.utilities.operators.arithmetic `multiplicative2`]]
+[def __operator_eq__eq__ [link utility.utilities.operators.arithmetic `operator==`]]
+[def __operator_gt__ [link utility.utilities.operators.arithmetic `operator_gt_`]]
+[def __operator_gt__eq__ [link utility.utilities.operators.arithmetic `operator&gt;`]]
+[def __operator_lt__ [link utility.utilities.operators.arithmetic `operator&lt;`]]
+[def __operator_lt__eq__ [link utility.utilities.operators.arithmetic `operator&lt;=`]]
+[def __operator_lt__lt__ [link utility.utilities.operators.arithmetic `operator&lt;&lt;`]]
+[def __operator_not__eq__ [link utility.utilities.operators.arithmetic `operator!=`]]
+[def __operators2__ [link utility.utilities.operators.arithmetic `operators2`]]
+[def __operators__ [link utility.utilities.operators.arithmetic `operators`]]
+[def __operators_lt_T__ [link utility.utilities.operators.arithmetic `operators<T,T>`]]
+[def __ordered_euclidean_ring_operators1__ [link utility.utilities.operators.arithmetic `ordered_euclidean_ring_operators1`]]
+[def __ordered_euclidean_ring_operators2__ [link utility.utilities.operators.arithmetic `ordered_euclidean_ring_operators2`]]
+[def __ordered_euclidian_ring_operators1__ [link utility.utilities.operators.arithmetic `ordered_euclidian_ring_operators1`]]
+[def __ordered_euclidian_ring_operators2__ [link utility.utilities.operators.arithmetic `ordered_euclidian_ring_operators2`]]
+[def __ordered_field_operators1__ [link utility.utilities.operators.arithmetic `ordered_field_operators1`]]
+[def __ordered_field_operators2__ [link utility.utilities.operators.arithmetic `ordered_field_operators2`]]
+[def __ordered_ring_operators1__ [link utility.utilities.operators.arithmetic `ordered_ring_operators1`]]
+[def __ordered_ring_operators2__ [link utility.utilities.operators.arithmetic `ordered_ring_operators2`]]
+[def __output_iteratable__ [link utility.utilities.operators.arithmetic `output_iteratable`]]
+[def __output_iterator_helper__ [link utility.utilities.operators.arithmetic `output_iterator_helper`]]
+[def __partially_ordered1__ [link utility.utilities.operators.arithmetic `partially_ordered1`]]
+[def __partially_ordered2__ [link utility.utilities.operators.arithmetic `partially_ordered2`]]
+[def __random_access_iteratable__ [link utility.utilities.operators.arithmetic `random_access_iteratable`]]
+[def __random_access_iterator_helper__ [link utility.utilities.operators.arithmetic `random_access_iterator_helper`]]
+[def __result_of__ [classref boost::result_of `result_of`]]
+[def __ring_operators1__ [link utility.utilities.operators.arithmetic `ring_operators1`]]
+[def __ring_operators2__ [link utility.utilities.operators.arithmetic `ring_operators2`]]
+[def __shiftable1__ [link utility.utilities.operators.arithmetic `shiftable1`]]
+[def __shiftable2__ [link utility.utilities.operators.arithmetic `shiftable2`]]
+[def __string_ref__ [classref boost::basic_string_ref `string_ref`]]
+[def __string_view__ [classref boost::basic_string_view `string_view`]]
+[def __swap__ [link utility.utilities.operators.arithmetic `swap`]]
+[def __totally_ordered1__ [link utility.utilities.operators.arithmetic `totally_ordered1`]]
+[def __totally_ordered2__ [link utility.utilities.operators.arithmetic `totally_ordered2`]]
+[def __tr1_result_of__ [classref boost::tr1_result_of `tr1_result_of`]]
+[def __typed_in_place_factory_base__ [classref boost::typed_in_place_factory_base `typed_in_place_factory_base`]]
+[def __u16string_ref__ [classref boost::basic_string_ref `u16string_ref`]]
+[def __u16string_view__ [classref boost::basic_string_view `u16string_view`]]
+[def __u32string_ref__ [classref boost::basic_string_ref `u32string_ref`]]
+[def __u32string_view__ [classref boost::basic_string_view `u32string_view`]]
+[def __unit_steppable__ [link utility.utilities.operators.arithmetic `unit_steppable`]]
+[def __value_initialized__ [classref boost::value_initialized `value_initialized`]]
+[def __wstring_ref__ [classref boost::basic_string_ref `wstring_ref`]]
+[def __wstring_view__ [classref boost::basic_string_view `wstring_view`]]
+
+[/ std:: types ]
+
+[def __assert__       [@https://en.cppreference.com/w/cpp/error/assert `assert`]]
+[def __decltype__       [@https://en.cppreference.com/w/cpp/language/decltype `decltype`]]
+[def __initializer_list__       [@https://en.cppreference.com/w/cpp/utility/initializer_list `std::initializer_list`]]
+[def __nullptr__       [@https://en.cppreference.com/w/cpp/language/nullptr `nullptr`]]
+[def __std_addressof__              [@https://en.cppreference.com/w/cpp/memory/addressof `std::addressof`]]
+[def __std_array__              [@https://en.cppreference.com/w/cpp/container/array `std::array`]]
+[def __std_basic_string__             [@https://en.cppreference.com/w/cpp/string/basic_string `std::basic_string`]]
+[def __std_basic_string_view__                   [@https://en.cppreference.com/w/cpp/string/basic_string_view `std::basic_string_view`]]
+[def __std_binder1st__                [@https://en.cppreference.com/w/cpp/utility/functional/binder12 `std::binder1st`]]
+[def __std_complex__            [@https://en.cppreference.com/w/cpp/numeric/complex `std::complex`]]
+[def __std_declval__            [@https://en.cppreference.com/w/cpp/utility/declval `std::declval`]]
+[def __std_enable_if__            [@https://en.cppreference.com/w/cpp/types/enable_if `std::enable_if`]]
+[def __std_enable_if_t__            [@https://en.cppreference.com/w/cpp/types/enable_if `std::enable_if_t`]]
+[def __std_fill__                     [@https://en.cppreference.com/w/cpp/algorithm/fill `std::fill`]]
+[def __std_hash__               [@https://en.cppreference.com/w/cpp/utility/hash `std::hash`]]
+[def __std_initializer_list__       [@https://en.cppreference.com/w/cpp/utility/initializer_list `std::initializer_list`]]
+[def __std_is_nothrow_constructible__ [@https://en.cppreference.com/w/cpp/types/is_constructible `std::is_nothrow_constructible`]]
+[def __std_make_pair__                [@https://en.cppreference.com/w/cpp/utility/pair/make_pair `std::make_pair`]]
+[def __std_memory_resource__    [@https://en.cppreference.com/w/cpp/memory/memory_resource `std::pmr::memory_resource`]]
+[def __std_memset__                   [@https://en.cppreference.com/w/cpp/string/byte/memset `std::memset`]]
+[def __std_next__                   [@https://en.cppreference.com/w/cpp/iterator/next `std::next`]]
+[def __std_nullptr_t__                [@https://en.cppreference.com/w/cpp/types/nullptr_t `std::nullptr_t`]]
+[def __std_ostream__                  [@https://en.cppreference.com/w/cpp/io/basic_ostream `std::ostream`]]
+[def __std_ostream__            [@https://en.cppreference.com/w/cpp/io/basic_ostream `__std_ostream__`]]
+[def __std_pair__                     [@https://en.cppreference.com/w/cpp/utility/pair `std::pair`]]
+[def __std_polymorphic_allocator__ [@https://en.cppreference.com/w/cpp/memory/polymorphic_allocator `std::pmr::polymorphic_allocator`]]
+[def __std_prev__                   [@https://en.cppreference.com/w/cpp/iterator/prev `std::prev`]]
+[def __std_ptrdiff_t__                [@https://en.cppreference.com/w/cpp/types/ptrdiff_t `std::ptrdiff_t`]]
+[def __std_remove__                [@https://en.cppreference.com/w/cpp/algorithm/remove `std::remove`]]
+[def __std_result_of__                [@https://en.cppreference.com/w/cpp/types/result_of `std::result_of`]]
+[def __std_sort__          [@https://en.cppreference.com/w/cpp/algorithm/sort `std::sort`]]
+[def __std_streambuf__          [@https://en.cppreference.com/w/cpp/header/streambuf `std::streambuf`]]
+[def __std_string__                   [@https://en.cppreference.com/w/cpp/string/basic_string `std::string`]]
+[def __std_string_view__                   [@https://en.cppreference.com/w/cpp/string/basic_string_view `std::string_view`]]
+[def __std_unary_function__      [@https://en.cppreference.com/w/cpp/utility/functional/unary_function `std::unary_function`]]
+[def __std_unordered_map__      [@https://en.cppreference.com/w/cpp/container/unordered_map `std::unordered_map`]]
+[def __std_uses_allocator__     [@https://en.cppreference.com/w/cpp/memory/uses_allocator `std::uses_allocator`]]
+[def __std_vector__             [@https://en.cppreference.com/w/cpp/container/vector `std::vector`]]
+
+[/ Dingbats ]
+
+[def __good__ [role green \u2714]]
+[def __bad__  [role red   \u2718]]
+
+[/-----------------------------------------------------------------------------]
+
+[include overview.qbk]
+
+[include utilities.qbk]
+
+[include other.qbk]
+
+[section:reference Quick Reference]
+
+[/ Reference table ]
+[xinclude quickref.xml]
+
+[/ Generated reference files ]
+[/ [include reference.qbk] ]
+
+[/ Generated index ]
+[/ [xinclude index.xml] ]
+
+[endsect]

doc/other.qbk

@@ -0,0 +1,29 @@
+[/
+    Copyright (c) 2021 Alan de Freitas (alandefreitas@gmail.com)
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    Official repository: https://github.com/boostorg/utility
+]
+
+[section:more_utilities More Utilities]
+
+Some utilities have been moved from Boost.Utilities to more appropriate Boost libraries:
+
+# Moved to [@boost:/libs/core/index.html Boost.Core]
+    # [@boost:/libs/core/doc/html/core/addressof.html addressof]
+    # [@boost:/libs/core/doc/html/core/checked_delete.html checked_delete]
+    # [@boost:/libs/core/doc/html/core/enable_if.html enable_if]
+    # [@boost:/libs/core/doc/html/core/noncopyable.html noncopyable]
+# Moved to [@boost:/libs/type_traits/index.html Boost.TypeTraits]
+    # [@boost:/libs/type_traits/doc/html/boost_typetraits/reference/declval.html declval]
+# Moved to [@boost:/libs/iterator/index.html Boost.Iterator]
+    # [@boost:/libs/iterator/doc/generator_iterator.htm generator iterator adaptors]
+    # [@boost:/libs/iterator/doc/html/iterator/algorithms/next_prior.html next/prior]
+# Moved to [@boost:/libs/io/index.html Boost.IO]
+    # [@boost:/libs/io/doc/html/io.html ostream_string]
+# Moved to [@boost:/libs/throw_exception/index.html Boost.ThrowException]
+    # [@boost:/libs/throw_exception/doc/html/throw_exception.html#using_boost_throw_exception throw_exception]
+
+[endsect]

doc/overview.qbk

@@ -0,0 +1,46 @@
+[/
+    Copyright (c) 2021 Alan de Freitas (alandefreitas@gmail.com)
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    Official repository: https://github.com/boostorg/utility
+]
+
+[section Overview]
+[block'''<?dbhtml stop-chunking?>''']
+
+Boost.Utility is a collection of small, useful, and general-purpose components for language support.
+
+Over time,
+
+* several components have been moved to more appropriate Boost libraries and
+* many of these components had variants accepted into the C++ standard
+
+When the component has moved to another Boost library, Boost.Utility headers still lead to the appropriate headers
+in other libraries.
+
+[table Components
+    [[Boost.Utility] [Moved to Boost] [C++ Standard variant]]
+    [[[@boost:/libs/core/doc/html/core/addressof.html `addressof`]] [[@boost:/libs/core/index.html Boost.Core]] [C++11 __std_addressof__]]
+    [[[link utility.utilities.base_from_member `base_from_member`]]      [] []]
+    [[__BOOST_BINARY__] [] [C++14 [@https://en.cppreference.com/w/cpp/language/integer_literal Binary integer literal]]]
+    [[[link utility.utilities.call_traits `call_traits`]]      [] []]
+    [[[@boost:/libs/core/doc/html/core/checked_delete.html `checked_delete`]] [[@boost:/libs/core/index.html Boost.Core]] []]
+    [[[link utility.utilities.compressed_pair `compressed_pair`]]      [] []]
+    [[[@boost:/libs/type_traits/doc/html/boost_typetraits/reference/declval.html `declval`]] [[@boost:/libs/type_traits/index.html Boost.TypeTraits]] [C++11 __std_declval__]]
+    [[[@boost:/libs/core/doc/html/core/enable_if.html `enable_if`]] [[@boost:/libs/core/index.html Boost.Core]] [C++11 __std_enable_if__]]
+    [[[@boost:/libs/iterator/doc/generator_iterator.htm generator iterator adaptors]] [[@boost:/libs/iterator/index.html Boost.Iterator]] []]
+    [[__in_place_factory__]      [] []]
+    [[[@boost:/libs/iterator/index.html `iterator_adaptors`]]      [[@boost:/libs/iterator/index.html Boost.Iterator]] []]
+    [[[@boost:/libs/iterator/doc/html/iterator/algorithms/next_prior.html `next` / `prior`]] [[@boost:/libs/iterator/index.html Boost.Iterator]] [C++11 __std_next__ / __std_prev__]]
+    [[[@boost:/libs/core/doc/html/core/noncopyable.html `noncopyable`]] [[@boost:/libs/core/index.html Boost.Core]] []]
+    [[[link utility.utilities.operators `operators`]]      [] []]
+    [[[@boost:/libs/io/doc/html/io.html `ostream_string`]] [[@boost:/libs/io/index.html Boost.IO]] []]
+    [[[link utility.utilities.result_of `result_of`]]      [] [C++11 __std_result_of__]]
+    [[[link utility.utilities.string_view `string_view`]]      [] [C++17 __std_string_view__]]
+    [[[@boost:/libs/throw_exception/doc/html/throw_exception.html#using_boost_throw_exception `throw_exception`]] [[@boost:/libs/throw_exception/index.html Boost.ThrowException]] []]
+    [[[link utility.utilities.value_init `value_init`]]      [] [C++11 [@https://en.cppreference.com/w/cpp/language/list_initialization List initialization]]]
+]
+
+[endsect]

doc/quickref.xml

@@ -0,0 +1,474 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN" "../../../tools/boostbook/dtd/boostbook.dtd">
+
+<!--
+    Copyright (c) 2021, Alan Freitas
+
+    Distributed under the Boost Software License, Version 1.0.
+
+    See accompanying file LICENSE_1_0.txt
+    or copy at http://boost.org/LICENSE_1_0.txt
+-->
+
+<!-- See also https://tdg.docbook.org/tdg/5.1/ -->
+
+<!-- Doxygen reference -->
+<informaltable frame="all">
+    <tgroup cols="4">
+        <colspec colname="a"/>
+        <colspec colname="b"/>
+        <colspec colname="c"/>
+        <colspec colname="d"/>
+
+        <thead>
+            <row>
+                <entry valign="center" namest="a" nameend="a">
+                    <bridgehead renderas="sect2">Base from Member</bridgehead>
+                </entry>
+                <entry valign="center" namest="b" nameend="b">
+                    <bridgehead renderas="sect2">Call Traits</bridgehead>
+                </entry>
+                <entry valign="center" namest="c" nameend="c">
+                    <bridgehead renderas="sect2">Compressed Pair</bridgehead>
+                </entry>
+                <entry valign="center" namest="d" nameend="d">
+                    <bridgehead renderas="sect2">In-place Factory</bridgehead>
+                </entry>
+            </row>
+        </thead>
+        <tbody>
+            <row>
+                <!-- base_from_member -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::base_from_member">base_from_member</classname>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <!-- call_traits -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Type Traits</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::call_traits">call_traits</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::call_traits">call_traits&lt;T&amp;&gt;</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::call_traits">call_traits&lt;T[N]&gt;</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::call_traits">call_traits&lt;const T[N]&gt;</classname>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <!-- compressed_pair -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::compressed_pair">compressed_pair</classname>
+                        </member>
+                    </simplelist>
+
+                    <bridgehead renderas="sect3">Functions</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <headername alt="boost/detail/compressed_pair.hpp">swap</headername>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <!-- in_place_factory -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::in_place_factory_base">in_place_factory_base</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::typed_in_place_factory_base">typed_in_place_factory_base</classname>
+                        </member>
+                    </simplelist>
+                </entry>
+            </row>
+        </tbody>
+    </tgroup>
+
+    <tgroup cols="5">
+        <colspec colname="a"/>
+        <colspec colname="b"/>
+        <colspec colname="c"/>
+        <colspec colname="d"/>
+        <colspec colname="e"/>
+
+        <thead>
+            <row>
+                <entry valign="center" namest="a" nameend="e">
+                    <bridgehead renderas="sect2">Operators</bridgehead>
+                </entry>
+            </row>
+        </thead>
+
+        <tbody>
+            <row>
+                <entry valign="top">
+                    <!-- 13 classes per cell -->
+                    <bridgehead renderas="sect3">Classes (1 of 5)</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.additive1">additive1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.additive2">additive2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.arithmetic1">arithmetic1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.arithmetic2">arithmetic2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.grpd_iter_oprs.bidirectional_iteratable">bidirectional_iteratable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.iterator.bidirectional_iterator_helper">
+                                bidirectional_iterator_helper
+                            </link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.bitwise1">bitwise1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.bitwise2">bitwise2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.decrementable">decrementable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.dereference.dereferenceable">dereferenceable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.equality_comparable1">equality_comparable1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.equality_comparable2">equality_comparable2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.equivalent1">equivalent1</link>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes (2 of 5)</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.equivalent2">equivalent2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.euclidean_ring_operators1">euclidean_ring_operators1
+                            </link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.euclidean_ring_operators2">euclidean_ring_operators2
+                            </link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.field_operators1">field_operators1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.field_operators2">field_operators2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.grpd_iter_oprs.forward_iteratable">forward_iteratable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.iterator.forward_iterator_helper">forward_iterator_helper</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.incrementable">incrementable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.dereference.indexable">indexable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.grpd_iter_oprs.input_iteratable">input_iteratable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.iterator.input_iterator_helper">input_iterator_helper</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.integer_arithmetic1">integer_arithmetic1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.integer_arithmetic2">integer_arithmetic2</link>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes (3 of 5)</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.integer_multiplicative1">integer_multiplicative1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.integer_multiplicative2">integer_multiplicative2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.less_than_comparable1">less_than_comparable1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.less_than_comparable2">less_than_comparable2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.multiplicative1">multiplicative1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.multiplicative2">multiplicative2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.ex_oprs.operators1">operators1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.ex_oprs.operators2">operators2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.ex_oprs.operators2">operators&lt;T,T&gt;</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ordered_euclidean_ring_operators1">
+                                ordered_euclidean_ring_operators1
+                            </link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ordered_euclidean_ring_operators2">
+                                ordered_euclidean_ring_operators2
+                            </link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ordered_field_operators1">ordered_field_operators1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ordered_field_operators2">ordered_field_operators2</link>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes (4 of 5)</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ordered_ring_operators1">ordered_ring_operators1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ordered_ring_operators2">ordered_ring_operators2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.grpd_iter_oprs.output_iteratable">output_iteratable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.iterator.output_iterator_helper">output_iterator_helper</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.partially_ordered1">partially_ordered1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.smpl_oprs.partially_ordered2">partially_ordered2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.grpd_iter_oprs.random_access_iteratable">random_access_iteratable</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.deref.iterator.random_access_iterator_helper">
+                                random_access_iterator_helper
+                            </link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ring_operators1">ring_operators1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.ring_operators2">ring_operators2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.shiftable1">shiftable1</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.shiftable2">shiftable2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.totally_ordered1">totally_ordered1</link>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes (5 of 5)</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.totally_ordered2">totally_ordered2</link>
+                        </member>
+                        <member>
+                            <link linkend="utility.utilities.operators.arithmetic.grpd_oprs.unit_steppable">unit_steppable</link>
+                        </member>
+                    </simplelist>
+                </entry>
+            </row>
+        </tbody>
+    </tgroup>
+
+    <tgroup cols="5">
+        <colspec colname="a"/>
+        <colspec colname="b"/>
+        <colspec colname="c"/>
+        <colspec colname="d"/>
+        <colspec colname="e"/>
+
+        <thead>
+            <row>
+                <entry valign="center" namest="a" nameend="a">
+                    <bridgehead renderas="sect2">Result of</bridgehead>
+                </entry>
+                <entry valign="center" namest="b" nameend="d">
+                    <bridgehead renderas="sect2">String View</bridgehead>
+                </entry>
+                <entry valign="center" namest="e" nameend="e">
+                    <bridgehead renderas="sect2">Value Init</bridgehead>
+                </entry>
+            </row>
+        </thead>
+
+        <tbody>
+            <row>
+                <!-- result_of -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Type Traits</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::result_of">result_of</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::tr1_result_of">tr1_result_of</classname>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <!-- string_view -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Aliases</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::basic_string_view">string_view</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_ref">u16string_ref</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_view">u16string_view</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_ref">u32string_ref</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_view">u32string_view</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_ref">wstring_ref</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_view">wstring_view</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_ref">string_ref</classname>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::basic_string_ref">basic_string_ref</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::basic_string_view">basic_string_view</classname>
+                        </member>
+                    </simplelist>
+                    <bridgehead renderas="sect3">Functions</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <functionname alt="boost::hash_range">hash_range</functionname>
+                        </member>
+                        <member>
+                            <functionname alt="boost::hash_value">hash_value</functionname>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Operators</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator==</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator!=</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator&lt;</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator&lt;=</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator&gt;</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator&gt;=</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/string_view.hpp">operator&lt;&lt;</headername>
+                        </member>
+                    </simplelist>
+                </entry>
+
+                <!-- value_init -->
+                <entry valign="top">
+                    <bridgehead renderas="sect3">Classes</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <classname alt="boost::initialized">initialized</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::initialized_value_t">initialized_value_t</classname>
+                        </member>
+                        <member>
+                            <classname alt="boost::value_initialized">value_initialized</classname>
+                        </member>
+                    </simplelist>
+                    <bridgehead renderas="sect3">Functions</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <headername alt="boost/utility/value_init.hpp">get</headername>
+                        </member>
+                        <member>
+                            <headername alt="boost/utility/value_init.hpp">swap</headername>
+                        </member>
+                    </simplelist>
+                    <bridgehead renderas="sect3">Constants</bridgehead>
+                    <simplelist type="vert" columns="1">
+                        <member>
+                            <globalname alt="boost::initialized_value">initialized_value</globalname>
+                        </member>
+                    </simplelist>
+                </entry>
+            </row>
+        </tbody>
+    </tgroup>
+</informaltable>

doc/result_of.qbk

@@ -0,0 +1,417 @@
+[/
+ / Copyright (c) 2012 Marshall Clow
+ / Copyright (c) 2021, Alan Freitas
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[/===============]
+[section:result_of Result of]
+[/===============]
+
+[section Introduction]
+
+The class template __result_of__ helps determine the type of a
+call expression. For example, given an lvalue `f` of type `F`
+and lvalues `t1`,`t2`, ..., `tN` of types `T1`, `T2`, ..., `TN`,
+respectively, the type __result_of__`<F(T1, T2, ..., TN)>::type` defines
+the result type of the expression `f(t1, t2, ...,tN)`.
+
+This implementation permits the type `F` to be a function pointer,
+function reference, member function pointer, or class type. By default,
+N may be any value between 0 and 16. To change the upper limit, define
+the macro `BOOST_RESULT_OF_NUM_ARGS` to the maximum value for N. Class
+template __result_of__ resides in the header
+[@../../../../boost/utility/result_of.hpp `<boost/utility/result_of.hpp>`].
+
+If your compiler's support for __decltype__ is adequate, __result_of__
+automatically uses it to deduce the type of the call expression, in
+which case __result_of__`<F(T1, T2, ..., TN)>::type` names the type
+__decltype__`(boost::declval<F>()(boost::declval<T1>(),
+boost::declval<T2>(), ..., boost::declval<TN>()))`, as in the
+following example.
+
+```
+struct functor {
+    template<class T>
+    T operator()(T x)
+    {
+        return x;
+    }
+};
+
+typedef __boost_result_of__<functor(int)>::type type; // type is int
+```
+
+You can test whether __result_of__ is using __decltype__ by checking if
+the macro `BOOST_RESULT_OF_USE_DECLTYPE` is defined after
+including `result_of.hpp`. You can also force __result_of__ to use
+__decltype__ by defining `BOOST_RESULT_OF_USE_DECLTYPE` prior
+to including `result_of.hpp`.
+
+If __decltype__ is not used, then automatic result type deduction of function
+objects is not possible. Instead, __result_of__ uses the following protocol
+to allow the programmer to specify a type. When `F` is a class type with a
+member type `result_type`, `result_of<F(T1, T2, ..., TN)>::type` is
+`F::result_type`. When `F` does not contain `result_type`,
+`result_of<F(T1, T2, ..., TN)>::type` is
+`F::result<F(T1, T2, ..., TN)>::type` when
+`N > 0` or `void` when `N = 0`.
+
+Note that it is the responsibility of the programmer to ensure that
+function objects accurately advertise their result
+type via this protocol, as in the following example.
+
+```
+struct functor {
+    template <class> struct result;
+
+    template<class F, class T>
+    struct result<F(T)> {
+        typedef T type;
+    };
+
+    template<class T>
+    T operator()(T x)
+    {
+        return x;
+    }
+};
+
+typedef __boost_result_of__<functor(int)>::type type; // type is int
+```
+
+Since __decltype__ is a language feature standardized in C++11, if you are
+writing a function object to be used with __result_of__, for maximum
+portability, you might consider following the above protocol
+even if your compiler has proper __decltype__ support.
+
+If you wish to continue to use the protocol on compilers that
+support __decltype__, there are two options:
+
+* You can use __boost_tr1_result_of__, which is also defined in
+[@../../../boost/utility/result_of.hpp `<boost/utility/result_of.hpp>`].
+
+* Alternatively, you can define the macro `BOOST_RESULT_OF_USE_TR1`,
+which causes __result_of__ to use the protocol described above instead
+of __decltype__. If you choose to follow the protocol, take care to
+ensure that the `result_type` and `result<>` members accurately
+represent the return type of `operator()` given a call expression.
+
+Additionally, __boost_result_of__ provides a third mode of operation,
+which some users may find convenient. When
+`BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK` is defined,
+__boost_result_of__ behaves as follows. If the function object has a member
+type `result_type` or member template `result<>`, then __boost_result_of__
+will use the TR1 protocol.
+
+Otherwise, __boost_result_of__ will use __decltype__. Using TR1 with
+a __decltype__ fallback may workaround certain problems at the cost of portability.
+For example:
+
+* Deficient compiler: If your code requires __boost_result_of__ to work
+with incomplete return types but your compiler's __decltype__ implementation
+does not support incomplete return types, then you can use the TR1 protocol
+as a workaround. Support for incomplete return types was added late in the
+C++11 standardization process
+(see [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3276.pdf N3276])
+and is not implemented by some compilers.
+
+* Deficient legacy code: If your existing TR1 function object advertises a different type than
+the actual result type deduced by __decltype__, then using TR1 with a __decltype__ fallback
+will allow you to work with both your existing TR1 function objects and new C++11
+function object. This situation could occur if your legacy function objects
+misused the TR1 protocol. See the documentation on known [link utility.utilities.result_of.result_of_tr1_diff differences]
+between __boost_result_of__ and TR1.
+
+* [#BOOST_NO_RESULT_OF] This implementation of __result_of__ requires class template
+partial specialization, the ability to parse function types properly, and support
+for SFINAE. If __result_of__ is not supported by your compiler, including the header
+[@../../../boost/utility/result_of.hpp `<boost/utility/result_of.hpp>`] will define
+the macro `BOOST_NO_RESULT_OF`.
+
+For additional information about __result_of__, see the C++ Library
+Technical Report, [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1836.pdf N1836],
+or, for motivation and design rationale, the __result_of__
+[@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2003/n1454.html proposal].
+
+[endsect]
+
+[section:result_of_guidelines Usage guidelines for __boost_result_of__]
+
+The following are general suggestions about when and how to use __boost_result_of__.
+
+# If you are targeting C++11 and are not concerned about portability to
+non-compliant compilers or previous versions of the standard, then use
+`__std_result_of__`. If `__std_result_of__` meets your needs, then
+there's no reason to stop using it.
+
+# If you are targeting C++11 but may port your code to legacy compilers
+at some time in the future, then use __boost_result_of__ with __decltype__.
+When __decltype__ is used __boost_result_of__ and `__std_result_of__` are usually
+interchangeable. See the documentation on known [link utility.utilities.result_of.result_of_cxx11_diff differences]
+between __boost_result_of__ and C++11 __std_result_of__.
+
+# If compiler portability is required, use __boost_result_of__ with the TR1 protocol
+
+Regardless of how you configure __boost_result_of__, it is
+important to bear in mind that the return type of a
+function may change depending on its arguments, and
+additionally, the return type of a member function may
+change depending on the cv-qualification of the
+object. __boost_result_of__ must be passed
+the appropriately cv-qualified types in order to
+deduce the corresponding return type.
+
+For example:
+
+```
+struct functor {
+    int& operator()(int);
+    int const& operator()(int) const;
+
+    float& operator()(float&);
+    float const& operator()(float const&);
+};
+
+typedef __boost_result_of__<
+    functor(int)
+>::type type1; // type1 is int &
+
+typedef __boost_result_of__<
+    const functor(int)
+>::type type2; // type2 is int const &
+
+typedef __boost_result_of__<
+    functor(float&)
+>::type type3; // type3 is float &
+
+typedef __boost_result_of__<
+    functor(float const&)
+>::type type4; // type4 is float const &
+```
+
+[endsect]
+
+[section:result_of_tr1_protocol_guidelines Usage guidelines for the TR1 result_of protocol]
+
+On compliant C++11 compilers, __boost_result_of__ can
+use __decltype__ to deduce the type of any
+call expression, including calls to function
+objects. However, on pre-C++11 compilers or on
+compilers without adequate decltype support,
+additional scaffolding is needed from function
+objects as described above. The following are
+suggestions about how to use the TR1 protocol.
+
+* When the return type does not depend on the
+argument types or the cv-qualification of the
+function object, simply
+define `result_type`. There is no need
+to use the `result` template unless the
+return type varies.
+
+* Use the protocol specified type when defining
+function prototypes. This can help ensure the
+actual return type does not get out of sync with
+the protocol specification. For example:
+
+```
+struct functor {
+    typedef int result_type;
+    result_type operator()(int);
+};
+```
+
+* Always specify the `result` specialization near the corresponding
+`operator()` overload. This can make it easier to keep the specializations
+in sync with the overloads. For example:
+
+```
+struct functor {
+    template<class> struct result;
+
+    template<class F>
+    struct result<F(int)> {
+        typedef int& type;
+    };
+    result<functor(int)>::type operator()(int);
+
+    template<class F>
+    struct result<const F(int)> {
+        typedef int const& type;
+    };
+    result<const functor(int)>::type operator()(int) const;
+};
+```
+
+* Use type transformations to simplify
+the `result` template specialization. For
+example, the following uses [@../type_traits/doc/html/index.html Boost.TypeTraits]
+to specialize the `result` template for
+a single `operator()` that can be called on
+both a const and non-const function object with
+either an lvalue or rvalue argument.
+
+```
+struct functor {
+    template<class> struct result;
+
+    template<class F, class T>
+    struct result<F(T)>
+        : boost::remove_cv<
+              typename boost::remove_reference<T>::type
+          >
+    {};
+
+    template<class T>
+    T operator()(T const&amp; x) const;
+};
+```
+
+[endsect]
+
+[section:result_of_tr1_diff Known differences between __boost_result_of__ and __boost_tr1_result_of__]
+
+When using __decltype__, __boost_result_of__ ignores the TR1 protocol and instead deduces the
+return type of function objects directly via __decltype__. In most situations, users
+will not notice a difference, so long as they use the protocol correctly. The following are situations in
+which the type deduced by __boost_result_of__ is known to differ depending on whether
+__decltype__ or the TR1 protocol is used.
+
+TR1 protocol misusage: When using the TR1 protocol, __boost_result_of__ cannot
+detect whether the actual type of a call to a function object is the same as the
+type specified by the protocol, which allows for the possibility of inadvertent
+mismatches between the specified type and the actual type. When using __decltype__,
+these subtle bugs may result in compilation errors. For example:
+
+```
+struct functor {
+   typedef short result_type;
+   int operator()(short);
+};
+
+#ifdef BOOST_RESULT_OF_USE_DECLTYPE
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<__boost_result_of__<functor(short)>::type, int>::value
+));
+
+#else
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<__boost_result_of__<functor(short)>::type, short>::value
+));
+
+#endif
+```
+
+Note that the user can force __boost_result_of__ to use the TR1
+protocol even on platforms that support __decltype__ by
+defining `BOOST_RESULT_OF_USE_TR1`.
+
+Nullary function objects: When using the TR1 protocol, __boost_result_of__
+cannot always deduce the type of calls to nullary function objects, in which case the
+type defaults to void. When using __decltype__, __boost_result_of__ always gives the
+actual type of the call expression. For example:
+
+```
+struct functor {
+   template<class> struct result {
+       typedef int type;
+   };
+   int operator()();
+};
+
+#ifdef BOOST_RESULT_OF_USE_DECLTYPE
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<__boost_result_of__<functor()>::type, int>::value
+));
+
+#else
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<__boost_result_of__<functor()>::type, void>::value
+));
+
+#endif
+```
+
+Note that there are some workarounds for the nullary function problem.
+So long as the return type does not vary, `result_type` can always be used to
+specify the return type regardless of arity. If the return type does vary,
+then the user can specialize __boost_result_of__ itself for nullary calls.
+
+Non-class prvalues and cv-qualification: When using the TR1 protocol, __boost_result_of__ will
+report the cv-qualified type specified by `result_type` or the `result` template regardless of
+the actual cv-qualification of the call expression. When using __decltype__, __boost_result_of__
+will report the actual type of the call expression, which is not cv-qualified when the expression
+is a non-class prvalue. For example:
+
+```
+struct functor {
+   template<class> struct result;
+   template<class F, class T> struct result<F(const T)> {
+       typedef const T type;
+   };
+
+   const short operator()(const short);
+   int const & operator()(int const &);
+};
+
+// Non-prvalue call expressions work the same with or without decltype.
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<
+       __boost_result_of__<functor(int const &)>::type,
+       int const &
+::value
+));
+
+// Non-class prvalue call expressions are not actually cv-qualified,
+// but only the decltype-based result_of reports this accurately.
+
+#ifdef BOOST_RESULT_OF_USE_DECLTYPE
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<
+       __boost_result_of__<functor(const short)>::type,
+       short
+::value
+));
+
+#else
+
+BOOST_STATIC_ASSERT((
+   boost::is_same<
+       __boost_result_of__<functor(const short)>::type,
+       const short
+::value
+));
+
+#endif
+```
+
+[endsect]
+
+[section:result_of_cxx11_diff Known differences between __boost_result_of__ and C++11 result_of]
+
+When using __decltype__, __boost_result_of__ implements most of the C++11 __std_result_of__
+specification. One known exception is that __boost_result_of__ does not implement the
+requirements regarding pointers to member data.
+
+[endsect]
+
+[/===============]
+[xinclude tmp/result_of_reference.xml]
+[/===============]
+
+[section Acknowledgments]
+
+Created by Doug Gregor. Contributions from Daniel Walker, Eric Niebler, Michel Morin and others.
+
+[endsect]
+
+[endsect]

doc/string_view.qbk

@@ -0,0 +1,209 @@
+[/
+ / Copyright (c) 2012 Marshall Clow
+ / Copyright (c) 2021, Alan Freitas
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[/===============]
+[section:string_view String View]
+[/===============]
+
+[section Introduction]
+
+The class __boost_string_view__ and other classes derived from __basic_string_view__ represent references to strings or substrings. When you are parsing/processing strings from some external source, frequently you want to pass a piece of text to a procedure for specialized processing. Before __std_string_view__, the canonical way to do this used to be a __std_string__, but that has certain drawbacks:
+
+1) If you are processing a buffer of text (say a HTTP response or the contents of a file), then you have to create the string from the text you want to pass, which involves memory allocation and copying of data.
+
+2) If a routine receives a constant __std_string__ and wants to pass a portion of that string to another routine, then it must create a new string of that substring.
+
+3) If a routine receives a constant __std_string__ and wants to return a portion of the string, then it must create a new string to return.
+
+__boost_string_view__ is designed to solve these efficiency problems. A __boost_string_view__ is a read-only reference to a contiguous sequence of characters, and provides much of the functionality of __std_string__. A __boost_string_view__ is cheap to create, copy and pass by value, because it does not actually own the storage that it points to.
+
+A __boost_string_view__ is implemented as a small struct that contains a pointer to the start of the character `data` and a `count`. A __boost_string_view__ is cheap to create and cheap to copy.
+
+__boost_string_view__ acts as a container; it includes all the methods that you would expect in a container, including iteration support, `operator[]`, `at` and `size`. It can be used with any of the iterator-based algorithms in the STL - as long as you do not need to change the underlying data. For example, __std_sort__ and __std_remove__ will not work.
+
+Besides generic container functionality, __boost_string_view__ provides a subset of the interface of __std_string__. This makes it easy to replace parameters of type `const __std_string__ &` with __boost_string_view__. Like __std_string__, __boost_string_view__ has a static member variable named `npos` to denote the result of failed searches, and to mean "the end".
+
+[caution Because a __boost_string_view__ does not own the data that it refers to, it introduces lifetime issues into code that uses it. The programmer must ensure that the data that a __string_view__ refers to exists as long as the __string_view__ does.]
+
+[note
+
+Boost.Utility also includes the class __string_ref__:
+
+- __string_ref__ is the initial implementation of Jeffrey Yaskin's [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html N3442:
+string_ref: a non-owning reference to a string].
+
+- __string_view__ is an updated implementation to reflect the Library Fundamentals TS [@http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html N4480: \[string.view\]].
+
+Please prefer __string_view__ / __basic_string_view__ over __string_ref__ / __basic_string_ref__:
+
+- The __basic_string_view__ class better matches __std_basic_string_view__.
+
+- __basic_string_view__ has WAY more constexpr support.
+
+- Code that uses __basic_string_ref__ should continue to work.
+
+- Not much code depends on __basic_string_ref__ anymore.
+
+
+]
+[endsect]
+
+[/===============]
+[section Examples]
+[/===============]
+
+Integrating __string_view__ into your code is fairly simple. Wherever you pass a `const __std_string__ &` or __std_string__ as a parameter, that's a candidate for passing a __boost_string_view__.
+
+```
+__std_string__ extract_part ( const __std_string__ &bar ) {
+    return bar.substr ( 2, 3 );
+}
+
+if ( extract_part ( "ABCDEFG" ).front() == 'C' ) { /* do something */ }
+```
+
+Let's figure out what happens in this contrived example.
+
+* First, a temporary string is created from the string literal `"ABCDEFG"`, and it is passed (by reference) to the routine `extract_part`.
+* Then a second string is created in the call `__std_string__::substr` and returned to `extract_part` (this copy may be elided by RVO).
+* Then `extract_part` returns that string back to the caller (again this copy may be elided).
+* The first temporary string is deallocated, and `front` is called on the second string, and then it is deallocated as well.
+
+Two __std_string__ s are created, and two copy operations. That is potentially four memory allocations and deallocations, and the associated copying of data.
+
+Now let's look at the same code with __string_view__:
+
+```
+__boost_string_view__ extract_part ( __boost_string_view__ bar ) {
+    return bar.substr ( 2, 3 );
+}
+
+if ( extract_part ( "ABCDEFG" ).front() == "C" ) { /* do something */ }
+```
+
+No memory allocations. No copying of character data. No changes to the code other than the types. There are two __string_view__ s created, and two __string_view__ s copied, but those are cheap operations.
+[endsect]
+
+[/=================]
+[section:reference Synopsis]
+[/=================]
+
+The header file [@../../../../boost/utility/string_view.hpp `<boost/utility/string_view.hpp>`] defines a template __boost_basic_string_view__, and four specializations __string_view__, __wstring_view__, __u16string_view__, __u32string_view__ - for `char` / `wchar_t` / `char16_t` / `char32_t`.
+
+`#include <boost/utility/string_view.hpp>`
+
+Construction and copying:
+
+```
+constexpr basic_string_view ();    // Constructs an empty string_view
+constexpr basic_string_view(const charT* str); // Constructs from a NULL-terminated string
+constexpr basic_string_view(const charT* str, size_type len); // Constructs from a pointer, length pair
+template<typename Allocator>
+basic_string_view(const __std_basic_string__<charT, traits, Allocator>& str); // Constructs from a std::string
+basic_string_view (const basic_string_view &rhs);
+basic_string_view& operator=(const basic_string_view &rhs);
+```
+
+__string_view__ does not define a move constructor nor a move-assignment operator because copying a __string_view__ is just a cheap as moving one.
+
+Basic container-like functions:
+
+```
+constexpr size_type size()     const ;
+constexpr size_type length()   const ;
+constexpr size_type max_size() const ;
+constexpr bool empty()         const ;
+
+// All iterators are const_iterators
+constexpr const_iterator  begin() const ;
+constexpr const_iterator cbegin() const ;
+constexpr const_iterator    end() const ;
+constexpr const_iterator   cend() const ;
+const_reverse_iterator         rbegin() const ;
+const_reverse_iterator        crbegin() const ;
+const_reverse_iterator           rend() const ;
+const_reverse_iterator          crend() const ;
+```
+
+Access to the individual elements (all of which are const):
+
+```
+constexpr const charT& operator[](size_type pos) const ;
+const charT& at(size_t pos) const ;
+constexpr const charT& front() const ;
+constexpr const charT& back()  const ;
+constexpr const charT* data()  const ;
+```
+
+Modifying the __string_view__ (but not the underlying data):
+
+```
+void clear();
+void remove_prefix(size_type n);
+void remove_suffix(size_type n);
+```
+
+Searching:
+
+```
+size_type find(basic_string_view s) const ;
+size_type find(charT c) const ;
+size_type rfind(basic_string_view s) const ;
+size_type rfind(charT c) const ;
+size_type find_first_of(charT c) const ;
+size_type find_last_of (charT c) const ;
+
+size_type find_first_of(basic_string_view s) const ;
+size_type find_last_of(basic_string_view s) const ;
+size_type find_first_not_of(basic_string_view s) const ;
+size_type find_first_not_of(charT c) const ;
+size_type find_last_not_of(basic_string_view s) const ;
+size_type find_last_not_of(charT c) const ;
+```
+
+String-like operations:
+
+```
+constexpr basic_string_view substr(size_type pos, size_type n=npos) const ; // Creates a new string_view
+bool starts_with(charT c) const ;
+bool starts_with(basic_string_view x) const ;
+bool ends_with(charT c) const ;
+bool ends_with(basic_string_view x) const ;
+```
+[endsect]
+
+
+[/===============]
+[section History]
+[/===============]
+
+[h5 boost 1.71]
+* Glen Fernandes updated the implementation of the stream insertion operator to
+write directly to the `basic_streambuf` and refactored that functionality into
+a common utility.
+
+[h5 boost 1.53]
+* Introduced
+
+[endsect]
+
+[/===============]
+[xinclude tmp/string_view_reference.xml]
+[/===============]
+
+[/===============]
+[section Acknowledgments]
+[/===============]
+
+Author: Clow, Marshall
+
+Copyright 2012 Marshall Clow
+
+[endsect]
+
+[endsect]

doc/tmp/.gitignore

@@ -0,0 +1,2 @@
+*.qbk
+*.xml

doc/utilities.qbk

@@ -0,0 +1,32 @@
+[/
+    Copyright (c) 2021 Alan de Freitas (alandefreitas@gmail.com)
+
+    Distributed under the Boost Software License, Version 1.0. (See accompanying
+    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    Official repository: https://github.com/boostorg/utility
+]
+
+[section:utilities Utilities]
+
+The entire contents of Boost.Utility are in `namespace boost`.
+
+[warning
+
+Direct use of the header [@../../../../boost/utility.hpp `<boost/utility.hpp>`] is discouraged and it will be deprecated.
+
+Please include the headers relative to individual components instead.
+
+]
+
+[include base_from_member.qbk]
+[include BOOST_BINARY.qbk]
+[include call_traits.qbk]
+[include compressed_pair.qbk]
+[include in_place_factory.qbk]
+[include operators.qbk]
+[include result_of.qbk]
+[include string_view.qbk]
+[include value_init.qbk]
+
+[endsect]

doc/value_init.qbk

@@ -0,0 +1,578 @@
+[/
+ / Copyright (c) 2012 Marshall Clow
+ / Copyright (c) 2021, Alan Freitas
+ /
+ / Distributed under the Boost Software License, Version 1.0. (See accompanying
+ / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+ /]
+
+[/===============]
+[section:value_init Value Init]
+[/===============]
+
+[section Introduction]
+
+Constructing and initializing objects in a generic way is difficult in
+C++. The problem is that there are several different rules that apply
+for initialization. Depending on the type, the value of a newly constructed
+object can be zero-initialized (logically 0), default-constructed (using
+the default constructor), or indeterminate. When writing generic code,
+this problem must be addressed. The template __value_initialized__ provides
+a solution with consistent syntax for value initialization of scalar,
+union and class types. Moreover, __value_initialized__ offers a workaround to various
+compiler issues regarding value-initialization.
+
+Furthermore, a `const` object __initialized_value__ is provided,
+to avoid repeating the type name when retrieving the value from a
+`__value_initialized__<T>` object.
+
+There are various ways to initialize a variable, in C++. The following
+declarations all ['may] have a local variable initialized to its default
+value:
+
+```
+T1 var1;
+T2 var2 = 0;
+T3 var3 = {};
+T4 var4 = T4();
+```
+
+Unfortunately, whether or not any of those declarations correctly
+initialize the variable very much depends on its type. The first
+declaration is valid for any __DefaultConstructible__ type by definition.
+
+However, it does not always do an initialization. It correctly initializes
+the variable when it's an instance of a class, and the author of the class
+has provided a proper default constructor. On the other hand, the value of
+`var1` is ['indeterminate] when its type is an arithmetic type, like `int`,
+`float`, or `char`.
+
+An arithmetic variable is of course initialized properly by the second declaration,
+`T2 var2 = 0`. But this initialization form will not usually work for a
+class type, unless the class was especially written to support being
+initialized that way.
+
+The third form, `T3 var3 = {}`, initializes an aggregate, typically a "C-style"
+`struct` or a "C-style" array. However, at the time this library was developed,
+the syntax did not allow for a class that has an explicitly declared constructor.
+
+The fourth form is the most generic form of them, as it can be used to initialize
+arithmetic types, class types, aggregates, pointers, and other types.
+The declaration,  `T4 var4 = T4()`, should be read as follows: First a temporary
+object is created, by `T4()`. This object is [link utility.utilities.value_init.details.value_initialization value-initialized].
+Next the temporary object is copied to the named variable, `var4`. Afterwards,
+the temporary is destroyed. While the copying and the destruction are likely to
+be optimized away, C++ still requires the type `T4` to be __CopyConstructible__.
+So `T4` needs to be ['both] __DefaultConstructible__ ['and] __CopyConstructible__.
+
+A class may not be CopyConstructible, for example because it may have a
+private and undefined copy constructor, or because it may be derived from
+`boost::noncopyable`. Scott Meyers \[[link utility.utilities.value_init.references 2]\] explains why a
+class would be defined like that.
+
+There is another, less obvious disadvantage to the fourth form, `T4 var4 = T4()`:
+It suffers from various [link utility.utilities.value_init.details.compiler_issues compiler issues], causing
+a variable to be left uninitialized in some compiler specific cases.
+
+The template __value_initialized__ offers a generic way to initialize
+an object, like `T4 var4 = T4()`, but without requiring its type
+to be __CopyConstructible__. And it offers a workaround to those compiler issues
+regarding value-initialization as well. It allows getting an initialized
+variable of any type; it ['only] requires the type to be __DefaultConstructible__.
+A properly ['value-initialized] object of type `T` is constructed by the following
+declaration:
+
+```
+value_initialized<T> var;
+```
+
+The template __initialized__ offers both value-initialization and direct-initialization.
+It is especially useful as a data member type, allowing the very same object
+to be either direct-initialized or value-initialized.
+
+The `const` object __initialized_value__ allows value-initializing a variable as follows:
+
+```
+T var = initialized_value;
+```
+
+This form of initialization is semantically equivalent to `T4 var4 = T4()`,
+but robust against the aforementioned compiler issues.
+
+[endsect]
+
+[section:details Details]
+
+The C++ standard \[[link utility.utilities.value_init.references 3]\] contains the definitions
+of `zero-initialization` and `default-initialization`. Informally, zero-initialization
+means that the object is given the initial value `0` converted to the type and
+default-initialization means that [@https://en.cppreference.com/w/cpp/named_req/PODType POD] \[[link utility.utilities.value_init.references 4]\] types are zero-initialized,
+while non-POD class types are initialized with their corresponding default constructors.
+
+A ['declaration] can contain an ['initializer], which specifies the
+object's initial value. The initializer can be just '()', which states that
+the object shall be value-initialized (but see below). However, if a ['declaration]
+has no ['initializer] and it is of a non-`const`, non-`static` POD type, the
+initial value is indeterminate: (see [sect]8.5, \[dcl.init\], for the
+accurate definitions).
+
+```
+int x; // no initializer. x value is indeterminate.
+__std_string__ s; // no initializer, s is default-constructed.
+
+int y = int();
+// y is initialized using copy-initialization
+// but the temporary uses an empty set of parentheses as the initializer,
+// so it is default-constructed.
+// A default constructed POD type is zero-initialized,
+// therefore, y == 0.
+
+void foo ( __std_string__ ) ;
+foo ( __std_string__() ) ;
+// the temporary string is default constructed
+// as indicated by the initializer ()
+```
+
+[section:value_initialization value-initialization]
+
+The first [@http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html Technical
+Corrigendum for the C++ Standard] (TC1), whose draft was released to the public in
+November 2001, introduced [@http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#178 Core
+Issue 178], among many other issues.
+
+That issue introduced the new concept of `value-initialization`, and also fixed the
+wording for zero-initialization. Informally, value-initialization is similar to
+default-initialization with the exception that in some cases non-static data members
+and base class sub-objects are also value-initialized.
+
+The difference is that an object that is value-initialized will not have, or at least
+is less likely to have, indeterminate values for data members and base class sub-objects;
+unlike the case of an object default constructed (see Core Issue 178 for a
+normative description).
+
+In order to specify value-initialization of an object we need to use the
+empty-set initializer: `()`.
+
+As before, a declaration with no initializer specifies default-initialization,
+and a declaration with a non-empty initializer specifies copy (`=xxx`) or
+direct (`xxx`) initialization.
+
+```
+template<class T> void eat(T);
+
+int x ; // indeterminate initial value.
+
+__std_string__ s; // default-initialized.
+
+eat ( int() ) ; // value-initialized
+
+eat ( __std_string__() ) ; // value-initialized
+```
+
+[endsect]
+
+[section:syntax value-initialization syntax]
+
+Value initialization is specified using `()`. However, the empty set of
+parentheses is not permitted by the syntax of initializers because it is
+parsed as the declaration of a function taking no arguments:
+
+```
+int x() ; // declares function int(*)()
+```
+
+Thus, the empty `()` must be put in some other initialization context.
+
+One alternative is to use copy-initialization syntax:
+
+```
+int x = int();
+```
+
+This works perfectly fine for POD types. But for non-POD class types,
+copy-initialization searches for a suitable constructor, which could be,
+for instance, the copy-constructor. It also searches for a suitable conversion
+sequence but this does not apply in this context.
+
+For an arbitrary unknown type, using this syntax may not have the
+value-initialization effect intended because we don't know if a copy
+from a default constructed object is exactly the same as a default
+constructed object, and the compiler is allowed, in
+some cases, but never required to, optimize the copy away.
+
+One possible generic solution is to use value-initialization of a non static
+data member:
+
+```
+template<class T>
+struct W
+{
+    // value-initialization of 'data' here.
+    W() : data() {}
+
+    T data;
+};
+
+W<int> w;
+// w.data is value-initialized for any type.
+```
+
+This is the solution as it was supplied by earlier versions of the
+`__value_initialized__<T>` template class. Unfortunately this approach
+suffered from various compiler issues.
+
+[endsect]
+
+[section:compiler_issues Compiler issues]
+
+Various compilers have not yet fully implemented value-initialization.
+So when an object should be ['value-initialized] according to the C++ Standard,
+it ['may] in practice still be left uninitialized, because of those
+compiler issues. It is hard to make a general statement on what those issues
+are like, because they depend on the compiler you are using, its version number,
+and the type of object you would like to have value-initialized.
+
+All compilers we have tested so far support value-initialization for arithmetic types properly.
+However, various compilers may leave some types of ['aggregates] uninitialized, when they
+should be value-initialized. Value-initialization of objects of a pointer-to-member type may also
+go wrong on various compilers.
+
+At the moment of writing, May 2010, the following reported issues regarding
+value-initialization are still there in current compiler releases:
+
+* [@https://connect.microsoft.com/VisualStudio/feedback/details/100744 Microsoft Visual Studio Feedback ID 100744, Value-initialization in new-expression]: Reported by Pavel Kuznetsov (MetaCommunications Engineering), 2005.
+* [@http://connect.microsoft.com/VisualStudio/feedback/details/484295 Microsoft Visual Studio Feedback ID 484295, VC++ does not value-initialize members of derived classes without user-declared constructor] Reported by Sylvester Hesp, 2009.
+* [@https://connect.microsoft.com/VisualStudio/feedback/details/499606 Microsoft Visual Studio Feedback ID 499606, Presence of copy constructor breaks member class initialization] Reported by Alex Vakulenko, 2009
+* [@http://qc.embarcadero.com/wc/qcmain.aspx?d=83751 Embarcadero/C++Builder Report 83751, Value-initialization: arrays should have each element value-initialized] Reported by Niels Dekker (LKEB), 2010.
+* [@http://qc.embarcadero.com/wc/qcmain.aspx?d=83851 Embarcadero/C++Builder Report 83851, Value-initialized temporary triggers internal backend error C1798] Reported by Niels Dekker, 2010.
+* [@http://qc.embarcadero.com/wc/qcmain.aspx?d=84279 Embarcadero/C++Builder Report 84279, Internal compiler error (F1004), value-initializing member function pointer by "new T()"] Reported by Niels Dekker, 2010
+* Sun CR 6947016, Sun 5.10 may fail to value-initialize an object of a non-POD aggregate. Reported to Steve Clamage by Niels Dekker, 2010.
+* IBM's XL V10.1 and V11.1 may fail to value-initialize a temporary of a non-POD aggregate. Reported to Michael Wong by Niels Dekker, 2010.
+* Intel support issue 589832, Attempt to value-initialize pointer-to-member triggers internal error on Intel 11.1. Reported by John Maddock, 2010.
+
+Note that all known GCC issues regarding value-initialization are fixed with GCC version 4.4, including
+[@http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30111 GCC Bug 30111]. Clang also has completely implemented
+value-initialization, as far as we know, now that [@http://llvm.org/bugs/show_bug.cgi?id=7139 Clang Bug 7139]
+is fixed.
+
+New versions of __value_initialized__ (Boost release version 1.35 or higher) offer a workaround to these
+issues: __value_initialized__ may now clear its internal data, prior to constructing the object that it
+contains. It will do so for those compilers that need to have such a workaround, based on the
+[@boost:/libs/config/doc/html/boost_config/boost_macro_reference.html#boost_config.boost_macro_reference.macros_that_describe_defects
+compiler defect macro] `BOOST_NO_COMPLETE_VALUE_INITIALIZATION`.
+
+[endsect]
+
+[endsect]
+
+[section:types Types and objects]
+
+[section:val_init `template class value_initialized<T>`]
+
+```
+namespace boost {
+
+template<class T>
+class __value_initialized__
+{
+
+  public :
+
+    __value_initialized__() : x() {}
+
+    operator T const &() const { return x ; }
+
+    operator T&() { return x ; }
+
+    T const &data() const { return x ; }
+
+    T& data() { return x ; }
+
+    void swap( __value_initialized__& );
+
+  private :
+
+    [unspecified] x ;
+
+} ;
+
+template<class T>
+
+T const& get ( __value_initialized__<T> const& x )
+{
+  return x.data();
+}
+
+template<class T>
+T& get ( __value_initialized__<T>& x )
+{
+  return x.data();
+}
+
+template<class T>
+void swap ( __value_initialized__<T>& lhs, __value_initialized__<T>& rhs )
+{
+  lhs.swap(rhs);
+}
+
+} // namespace boost
+```
+
+An object of this template class is a `T`-wrapper convertible to `'T&'` whose
+wrapped object (data member of type `T`) is [link utility.utilities.value_init.details.value_initialization value-initialized] upon default-initialization
+of this wrapper class:
+
+```
+int zero = 0;
+__value_initialized__<int> x;
+assert( x == zero ) ;
+
+__std_string__ def;
+__value_initialized__< __std_string__ > y;
+assert( y == def ) ;
+```
+
+The purpose of this wrapper is to provide a consistent syntax for value initialization
+of scalar, union and class types (POD and non-POD) since the correct syntax for value
+initialization varies (see [link utility.utilities.value_init.details.syntax value-initialization syntax]).
+
+The wrapped object can be accessed either through the conversion operator
+`T&`, the member function `data()`, or the non-member function `get()`:
+
+```
+void watch(int);
+
+__value_initialized__<int> x;
+
+watch(x) ; // operator T& used.
+watch(x.data());
+watch( get(x) ) // function get() used
+```
+
+Both `const` and non-`const` objects can be wrapped. Mutable objects can be
+modified directly from within the wrapper but constant objects cannot:
+
+When `T` is a __Swappable__ type, `__value_initialized__<T>`
+is swappable as well, by calling its `swap` member function
+as well as by calling `boost::swap`.
+
+```
+__value_initialized__<int> x;
+static_cast<int&>(x) = 1 ; // OK
+get(x) = 1 ; // OK
+
+__value_initialized__<int const> y ;
+static_cast<int&>(y) = 1 ; // ERROR: cannot cast to int&
+static_cast<int const&>(y) = 1 ; // ERROR: cannot modify a const value
+get(y) = 1 ; // ERROR: cannot modify a const value
+```
+
+[warning
+
+The __value_initialized__ implementation of Boost version 1.40.0 and older
+allowed ['non-const] access to the wrapped object, from a constant wrapper,
+both by its conversion operator and its `data()` member function.
+
+For example:
+
+```
+__value_initialized__<int> const x_c;
+int& xr = x_c ; // OK, conversion to int& available even though x_c is itself const.
+xr = 2 ;
+```
+
+The reason for this obscure behavior was that some compilers did not accept the following valid code:
+
+```
+struct X
+{
+  operator int&() ;
+    operator int const&() const ;
+  };
+  X x ;
+  (x == 1) ; // ERROR HERE!
+```
+
+The current version of __value_initialized__ no longer has this obscure behavior.
+As compilers nowadays widely support overloading the conversion operator by having a `const`
+and a `non-const` version, we have decided to fix the issue accordingly. So the current version
+supports the idea of logical constness.
+
+]
+
+[section Recommended practice: The non-member get() idiom]
+
+The obscure behavior of being able to modify a non-`const`
+wrapped object from within a constant wrapper (as was supported by previous
+versions of __value_initialized__) can be avoided if access to the wrapped object
+is always performed with the `get()` idiom:
+
+```
+value_initialized<int> x;
+get(x) = 1; // OK
+value_initialized<int const> cx;
+get(x) = 1; // ERROR: Cannot modify a const object
+
+value_initialized<int> const x_c;
+get(x_c) = 1; // ERROR: Cannot modify a const object
+
+value_initialized<int const> const cx_c;
+get(cx_c) = 1; // ERROR: Cannot modify a const object
+```
+
+[endsect]
+
+[endsect]
+
+[section:initialized `template class initialized<T>`]
+
+
+```
+namespace boost {
+
+template<class T>
+class __initialized__
+{
+
+  public :
+
+    __initialized__() : x() {}
+
+    explicit __initialized__(T const & arg) : x(arg) {}
+
+    operator T const &() const;
+
+    operator T&();
+
+    T const &data() const;
+
+    T& data();
+
+    void swap( __initialized__& );
+
+  private :
+
+    [unspecified] x ;
+
+};
+
+template<class T>
+T const& get ( __initialized__<T> const& x );
+
+template<class T>
+T& get ( __initialized__<T>& x );
+
+template<class T>
+void swap ( __initialized__<T>& lhs, __initialized__<T>& rhs );
+
+} // namespace boost
+```
+
+The template class `boost::__initialized__<T>` supports both value-initialization
+and direct-initialization, so its interface is a superset of the interface
+of `__value_initialized__<T>`: Its default-constructor value-initializes the
+wrapped object just like the default-constructor of `__value_initialized__<T>`,
+but `boost::__initialized__<T>` also offers an extra `explicit`
+constructor, which direct-initializes the wrapped object by the specified value.
+
+`__initialized__<T>` is especially useful when the wrapped
+object must be either value-initialized or direct-initialized, depending on
+runtime conditions. For example, `__initialized__<T>` could
+hold the value of a data member that may be value-initialized by some
+constructors, and direct-initialized by others.
+
+On the other hand, if it is known beforehand that the
+object must ['always] be value-initialized, `__value_initialized__<T>`
+may be preferable. And if the object must always be
+direct-initialized, none of the two wrappers really needs to be used.
+
+[endsect]
+
+[section:initialized_value `initialized_value`]
+
+```
+namespace boost {
+class __initialized_value_t__
+{
+  public :
+    template <class T> operator T() const ;
+};
+
+__initialized_value_t__ const initialized_value = {} ;
+
+} // namespace boost
+```
+
+__initialized_value__ provides a convenient way to get
+an initialized value: its conversion operator provides an appropriate
+['value-initialized] object for any __CopyConstructible__ type.
+
+Suppose you need to have an initialized variable of type `T`.
+You could do it as follows:
+
+```
+T var = T();
+```
+
+But as mentioned before, this form suffers from various compiler issues.
+The template __value_initialized__ offers a workaround:
+
+```
+T var = get( __value_initialized__<T>() );
+```
+
+Unfortunately both forms repeat the type name, which
+is rather short now (`T`), but could of course be
+more like `Namespace::Template<Arg>::Type`.
+
+Instead, one could use __initialized_value__ as follows:
+
+```
+T var = __initialized_value__;
+```
+
+[endsect]
+[endsect]
+
+[section:references References]
+
+# Bjarne Stroustrup, Gabriel Dos Reis, and J. Stephen Adamczyk wrote various papers,
+proposing to extend the support for brace-enclosed ['initializer lists]
+in C++. This [@https://en.cppreference.com/w/cpp/language/list_initialization feature] has
+now been available since C++11. This would allow a variable `var` of any __DefaultConstructible__ type
+`T` to be ['value-initialized] by doing `T var = {}`. The papers are listed at Bjarne's web page,
+[@http://www.research.att.com/~bs/WG21.html My C++ Standards committee papers].
+
+# Scott Meyers, Effective C++, Third Edition, item 6, ['Explicitly disallow the use of
+compiler-generated functions you do not want], [@http://www.aristeia.com/books.html Scott Meyers: Books and CDs]
+
+# The C++ Standard, Second edition (2003), ISO/IEC 14882:2003
+
+# POD stands for [@https://en.cppreference.com/w/cpp/named_req/PODType "Plain Old Data"]
+
+[endsect]
+
+[/===============]
+[xinclude tmp/value_init_reference.xml]
+[/===============]
+
+[section:acknowledgements Acknowledgements]
+
+__value_initialized__ was developed by Fernando Cacciola, with help and suggestions
+from David Abrahams and Darin Adler.
+
+Special thanks to Bjorn Karlsson who carefully edited and completed this documentation.
+
+__value_initialized__ was reimplemented by Fernando Cacciola and Niels Dekker
+for Boost release version 1.35 (2008), offering a workaround to various compiler issues.
+
+`boost::__initialized__` was very much inspired by feedback from Edward Diener and Jeffrey Hellrung.
+
+__initialized_value__ was written by Niels Dekker, and added to Boost release version 1.36 (2008).
+
+Developed by [@mailto:fernando_cacciola@hotmail.com Fernando Cacciola]. The latest version of
+this file can be found at [@http://www.boost.org www.boost.org].
+
+[endsect]
+
+[endsect]

enable_if.html

@@ -0,0 +1,19 @@
+<html>
+<head>
+    <title>Boost.EnableIf</title>
+    <meta http-equiv="refresh" content="0; URL=../core/doc/html/core/enable_if.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="../core/doc/html/core/enable_if.html">../core/doc/html/core/enable_if.html</a>
+<hr>
+<tt>
+    Boost.EnableIf<br>
+    <br>
+    Distributed under the Boost Software License, Version 1.0.
+    (See accompanying file LICENSE_1_0.txt or copy at
+    <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+    <br>
+</tt>
+</body>
+</html>

identity_type/doc/Jamfile.v2

@@ -0,0 +1,44 @@
+
+# Copyright (C) 2009-2012 Lorenzo Caminiti
+# Distributed under the Boost Software License, Version 1.0
+# (see accompanying file LICENSE_1_0.txt or a copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+# Home at http://www.boost.org/libs/utility/identity_type
+
+import quickbook ;
+using boostbook ;
+
+doxygen reference : ../../include/boost/utility/identity_type.hpp
+    :   <reftitle>"Reference"
+        <doxygen:param>PREDEFINED="DOXYGEN"
+        <doxygen:param>QUIET=YES
+        <doxygen:param>WARN_IF_UNDOCUMENTED=NO
+        <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+        <doxygen:param>HIDE_UNDOC_CLASSES=YES
+        <doxygen:param>ALIASES=" Params=\"<b>Parameters:</b> <table border="0">\" Param{2}=\"<tr><td><b><tt>\\1</tt></b></td><td>\\2</td></tr>\" EndParams=\"</table>\" Returns=\"<b>Returns:</b>\" Note=\"<b>Note:</b>\" Warning=\"<b>Warning:</b>\" See=\"<b>See:</b>\" RefSect{2}=\"\\xmlonly<link linkend='boost_utility_identitytype.\\1'>\\2</link>\\endxmlonly\" RefClass{1}=\"\\xmlonly<computeroutput><classname alt='\\1'>\\1</classname></computeroutput>\\endxmlonly\" RefFunc{1}=\"\\xmlonly<computeroutput><functionname alt='\\1'>\\1</functionname></computeroutput>\\endxmlonly\" RefMacro{1}=\"\\xmlonly<computeroutput><macroname alt='\\1'>\\1</macroname></computeroutput>\\endxmlonly\" "
+    ;
+
+# This target must be called "index" so to generate "index.html" file.
+xml index : identity_type.qbk : <dependency>reference ;
+
+boostbook doc : index
+    :   <location>html
+        <format>onehtml
+        <xsl:param>toc.section.depth=0
+        <xsl:param>html.stylesheet=../../../../../doc/src/boostbook.css
+        <xsl:param>boost.root=../../../../..
+    ;
+
+#
+# This is very imperfect - it results in both html and pdf docs being built,
+# for some reason I can't get the "onehtml" format specified above to play nice
+# with the usual incantations for mixed pdf/html builds. JM 06/2012.
+#
+boostbook pdf_doc : index
+    :
+       <format>pdf
+       <format>html:<build>no
+    ;
+
+install pdf_doc_install : pdf_doc : <location>. <name>identity_type.pdf <install-type>PDF ;
+explicit pdf_doc_install ;

identity_type/doc/html/index.html

@@ -0,0 +1,252 @@
+<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Boost.Utility/IdentityType 1.0.0</title><link rel="stylesheet" type="text/css" href="../../../../../doc/src/boostbook.css"><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="chapter" title="Boost.Utility/IdentityType 1.0.0"><div class="titlepage"><div><div><h2 class="title"><a name="boost_utility_identitytype"></a>Boost.Utility/IdentityType 1.0.0</h2></div><div><div class="author"><h3 class="author"><span class="firstname">Lorenzo</span> <span class="surname">Caminiti <code class="email">&lt;<a class="email" href="mailto:lorcaminiti@gmail.com">lorcaminiti@gmail.com</a>&gt;</code></span></h3></div></div><div><p class="copyright">Copyright © 2009-2012 Lorenzo
+      Caminiti</p></div><div><div class="legalnotice" title="Legal Notice"><a name="boost_utility_identitytype.legal"></a><p>
+        Distributed under the Boost Software License, Version 1.0 (see accompanying
+        file LICENSE_1_0.txt or a copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
+      </p></div></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="section"><a href="#boost_utility_identitytype.motivation">Motivation</a></span></dt><dt><span class="section"><a href="#boost_utility_identitytype.solution">Solution</a></span></dt><dt><span class="section"><a href="#boost_utility_identitytype.templates">Templates</a></span></dt><dt><span class="section"><a href="#boost_utility_identitytype.abstract_types">Abstract Types</a></span></dt><dt><span class="section"><a href="#boost_utility_identitytype.annex__usage">Annex: Usage</a></span></dt><dt><span class="section"><a href="#boost_utility_identitytype.annex__implementation">Annex:
+    Implementation</a></span></dt><dt><span class="section"><a href="#reference">Reference</a></span></dt></dl></div><p>
+    This library allows to wrap types within round parenthesis so they can always
+    be passed as macro parameters.
+  </p><div class="section boost_utility_identitytype_motivation" title="Motivation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.motivation"></a><a class="link" href="#boost_utility_identitytype.motivation" title="Motivation">Motivation</a></h2></div></div></div><p>
+      Consider the following macro which declares a variable named <code class="computeroutput"><span class="identifier">var</span></code><code class="literal"><span class="emphasis"><em>n</em></span></code>
+      with the specified <code class="literal"><span class="emphasis"><em>type</em></span></code> (see also
+      <a href="../../test/var_error.cpp" target="_top"><code class="literal">var_error.cpp</code></a>):
+    </p><p>
+</p><pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">VAR</span><span class="special">(</span><span class="identifier">type</span><span class="special">,</span> <span class="identifier">n</span><span class="special">)</span> <span class="identifier">type</span> <span class="identifier">var</span> <span class="error">#</span><span class="preprocessor"># n</span>
+
+<span class="identifier">VAR</span><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="number">1</span><span class="special">);</span>                    <span class="comment">// OK.</span>
+<span class="identifier">VAR</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;,</span> <span class="number">2</span><span class="special">);</span>    <span class="comment">// Error.</span>
+</pre><p>
+    </p><p>
+      The first macro invocation works correctly declaring a variable named <code class="computeroutput"><span class="identifier">var1</span></code> of type <code class="computeroutput"><span class="keyword">int</span></code>.
+      However, the second macro invocation fails generating a preprocessor error
+      similar to the following:
+    </p><pre class="programlisting">error: macro "VAR" passed 3 arguments, but takes just 2
+</pre><p>
+      That is because the <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span></code> type passed as the first macro parameter
+      contains a comma <code class="computeroutput"><span class="special">,</span></code> not wrapped
+      by round parenthesis <code class="computeroutput"><span class="special">()</span></code>. The preprocessor
+      interprets that unwrapped comma as a separation between macro parameters concluding
+      that a total of three (and not two) parameters are passed to the macro in the
+      following order:
+    </p><div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
+          <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span></code>
+        </li><li class="listitem">
+          <code class="computeroutput"><span class="keyword">char</span><span class="special">&gt;</span></code>
+        </li><li class="listitem">
+          <code class="computeroutput"><span class="number">2</span></code>
+        </li></ol></div><p>
+      Note that, differently from the compiler, the preprocessor only recognizes
+      round parenthesis <code class="computeroutput"><span class="special">()</span></code>. Angular
+      <code class="computeroutput"><span class="special">&lt;&gt;</span></code> and squared <code class="computeroutput"><span class="special">[]</span></code> parenthesis are not recognized by the preprocessor
+      when parsing macro parameters.
+    </p></div><div class="section boost_utility_identitytype_solution" title="Solution"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.solution"></a><a class="link" href="#boost_utility_identitytype.solution" title="Solution">Solution</a></h2></div></div></div><p>
+      In some cases, it might be possible to workaround this issue by avoiding to
+      pass the type expression to the macro all together. For example, in the case
+      above a <code class="computeroutput"><span class="keyword">typedef</span></code> could have been
+      used to specify the type expression with the commas outside the macro (see
+      also <a href="../../test/var.cpp" target="_top"><code class="literal">var.cpp</code></a>):
+    </p><p>
+</p><pre class="programlisting"><span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">map_type</span><span class="special">;</span>
+<span class="identifier">VAR</span><span class="special">(</span><span class="identifier">map_type</span><span class="special">,</span> <span class="number">3</span><span class="special">);</span> <span class="comment">// OK.</span>
+</pre><p>
+    </p><p>
+      When this is neither possible nor desired (e.g., see the function template
+      <code class="computeroutput"><span class="identifier">f</span></code> in the section below), this
+      library header <code class="computeroutput"><a class="link" href="#header.boost.utility.identity_type_hpp" title="Header &lt;boost/utility/identity_type.hpp&gt;">boost/utility/identity_type.hpp</a></code>
+      defines a macro <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>
+      which can be used to workaround the issue while keeping the type expression
+      as one of the macro parameters (see also <a href="../../test/var.cpp" target="_top"><code class="literal">var.cpp</code></a>).
+    </p><p>
+</p><pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">utility</span><span class="special">/</span><span class="identifier">identity_type</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+
+<span class="identifier">VAR</span><span class="special">(</span><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;)),</span> <span class="number">4</span><span class="special">);</span> <span class="comment">// OK.</span>
+</pre><p>
+    </p><p>
+      The <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code> macro
+      expands to an expression that evaluates (at compile-time) to the specified
+      type. The specified type is never split into multiple macro parameters because
+      it is always wrapped by a set of extra round parenthesis <code class="computeroutput"><span class="special">()</span></code>.
+      In fact, a total of two sets of round parenthesis must be used: The parenthesis
+      to invoke the macro <code class="computeroutput"><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">(...)</span></code> plus the inner parenthesis to wrap the
+      type passed to the macro <code class="computeroutput"><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((...))</span></code>.
+    </p><p>
+      This macro works on any <a href="http://www.open-std.org/JTC1/SC22/WG21/docs/standards" target="_top">C++03</a>
+      compiler (and it does not use <a href="http://en.wikipedia.org/wiki/Variadic_macro" target="_top">variadic
+      macros</a>). <sup>[<a name="boost_utility_identitytype.solution.f0" href="#ftn.boost_utility_identitytype.solution.f0" class="footnote">1</a>]</sup> The authors originally developed and tested this library using
+      GNU Compiler Collection (GCC) C++ 4.5.3 (with and without C++11 features enabled
+      <code class="computeroutput"><span class="special">-</span><span class="identifier">std</span><span class="special">=</span><span class="identifier">c</span><span class="special">++</span><span class="number">0</span><span class="identifier">x</span></code>) on Cygwin
+      and Miscrosoft Visual C++ (MSVC) 8.0 on Windows 7. See the library <a href="http://www.boost.org/development/tests/release/developer/utility-identity_type.html" target="_top">regressions
+      test results</a> for more information on supported compilers and platforms.
+    </p></div><div class="section boost_utility_identitytype_templates" title="Templates"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.templates"></a><a class="link" href="#boost_utility_identitytype.templates" title="Templates">Templates</a></h2></div></div></div><p>
+      This macro must be prefixed by <code class="computeroutput"><span class="keyword">typename</span></code>
+      when used within templates. For example, let's program a macro that declares
+      a function parameter named <code class="computeroutput"><span class="identifier">arg</span></code><code class="literal"><span class="emphasis"><em>n</em></span></code>
+      with the specified <code class="literal"><span class="emphasis"><em>type</em></span></code> (see also
+      <a href="../../test/template.cpp" target="_top"><code class="literal">template.cpp</code></a>):
+    </p><p>
+</p><pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">ARG</span><span class="special">(</span><span class="identifier">type</span><span class="special">,</span> <span class="identifier">n</span><span class="special">)</span> <span class="identifier">type</span> <span class="identifier">arg</span> <span class="error">#</span><span class="preprocessor"># n</span>
+
+<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">void</span> <span class="identifier">f</span><span class="special">(</span> <span class="comment">// Prefix macro with `typename` in templates.</span>
+    <span class="identifier">ARG</span><span class="special">(</span><span class="keyword">typename</span> <span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;)),</span> <span class="number">1</span><span class="special">)</span>
+<span class="special">)</span> <span class="special">{</span>
+    <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">arg1</span><span class="special">[</span><span class="number">0</span><span class="special">]</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
+<span class="special">}</span>
+</pre><p>
+    </p><p>
+</p><pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;</span> <span class="identifier">a</span><span class="special">;</span>
+<span class="identifier">a</span><span class="special">[</span><span class="number">0</span><span class="special">]</span> <span class="special">=</span> <span class="char">'a'</span><span class="special">;</span>
+
+<span class="identifier">f</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;(</span><span class="identifier">a</span><span class="special">);</span> <span class="comment">// OK...</span>
+<span class="comment">// f(a);    // ... but error.</span>
+</pre><p>
+    </p><p>
+      However, note that the template parameter <code class="computeroutput"><span class="keyword">char</span></code>
+      must be manually specified when invoking the function as in <code class="computeroutput"><span class="identifier">f</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;(</span><span class="identifier">a</span><span class="special">)</span></code>. In fact,
+      when the <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>
+      macro is used to wrap a function template parameter, the template parameter
+      can no longer be automatically deduced by the compiler form the function call
+      as <code class="computeroutput"><span class="identifier">f</span><span class="special">(</span><span class="identifier">a</span><span class="special">)</span></code> would
+      have done. <sup>[<a name="boost_utility_identitytype.templates.f0" href="#ftn.boost_utility_identitytype.templates.f0" class="footnote">2</a>]</sup> (This limitation does not apply to class templates because class
+      template parameters must always be explicitly specified.) In other words, without
+      using the <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>
+      macro, C++ would normally be able to automatically deduce the function template
+      parameter as shown below:
+    </p><p>
+</p><pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">&gt;</span>
+<span class="keyword">void</span> <span class="identifier">g</span><span class="special">(</span>
+    <span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="identifier">arg1</span>
+<span class="special">)</span> <span class="special">{</span>
+    <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="identifier">arg1</span><span class="special">[</span><span class="number">0</span><span class="special">]</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
+<span class="special">}</span>
+</pre><p>
+    </p><p>
+</p><pre class="programlisting"><span class="identifier">g</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;(</span><span class="identifier">a</span><span class="special">);</span> <span class="comment">// OK...</span>
+<span class="identifier">g</span><span class="special">(</span><span class="identifier">a</span><span class="special">);</span>       <span class="comment">// ... and also OK.</span>
+</pre><p>
+    </p></div><div class="section boost_utility_identitytype_abstract_types" title="Abstract Types"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.abstract_types"></a><a class="link" href="#boost_utility_identitytype.abstract_types" title="Abstract Types">Abstract Types</a></h2></div></div></div><p>
+      On some compilers (e.g., GCC), using this macro on abstract types (i.e., classes
+      with one or more pure virtual functions) generates a compiler error. This can
+      be avoided by manipulating the type adding and removing a reference to it.
+    </p><p>
+      Let's program a macro that performs a static assertion on a <a href="http://en.wikipedia.org/wiki/Template_metaprogramming" target="_top">Template
+      Meta-Programming</a> (TMP) meta-function (similarly to Boost.MPL <a href="http://www.boost.org/doc/libs/1_36_0/libs/mpl/doc/refmanual/assert.html" target="_top"><code class="computeroutput"><span class="identifier">BOOST_MPL_ASSERT</span></code></a>). The <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code> macro can be used
+      to pass a meta-function with multiple template parameters to the assert macro
+      (so to handle the commas separating the template parameters). In this case,
+      if the meta-function is an abstract type, it needs to be manipulated adding
+      and removing a reference to it (see also <a href="../../test/abstract.cpp" target="_top"><code class="literal">abstract.cpp</code></a>):
+    </p><p>
+</p><pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">TMP_ASSERT</span><span class="special">(</span><span class="identifier">metafunction</span><span class="special">)</span> <span class="special">\</span>
+    <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">(</span><span class="identifier">metafunction</span><span class="special">::</span><span class="identifier">value</span><span class="special">)</span>
+
+<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">T</span><span class="special">,</span> <span class="keyword">bool</span> <span class="identifier">b</span><span class="special">&gt;</span>
+<span class="keyword">struct</span> <span class="identifier">abstract</span> <span class="special">{</span>
+    <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">value</span> <span class="special">=</span> <span class="identifier">b</span><span class="special">;</span>
+    <span class="keyword">virtual</span> <span class="keyword">void</span> <span class="identifier">f</span><span class="special">(</span><span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">x</span><span class="special">)</span> <span class="special">=</span> <span class="number">0</span><span class="special">;</span>     <span class="comment">// Pure virtual function.</span>
+<span class="special">};</span>
+
+<span class="identifier">TMP_ASSERT</span><span class="special">(</span>
+    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">remove_reference</span><span class="special">&lt;</span>            <span class="comment">// Add and remove</span>
+        <span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((</span>           <span class="comment">// reference for</span>
+            <span class="identifier">boost</span><span class="special">::</span><span class="identifier">add_reference</span><span class="special">&lt;</span>       <span class="comment">// abstract type.</span>
+                <span class="identifier">abstract</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">true</span><span class="special">&gt;</span>
+            <span class="special">&gt;::</span><span class="identifier">type</span>
+        <span class="special">))</span>
+    <span class="special">&gt;::</span><span class="identifier">type</span>
+<span class="special">);</span>
+</pre><p>
+    </p></div><div class="section boost_utility_identitytype_annex__usage" title="Annex: Usage"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.annex__usage"></a><a class="link" href="#boost_utility_identitytype.annex__usage" title="Annex: Usage">Annex: Usage</a></h2></div></div></div><p>
+      The <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code> macro
+      can be used either when calling a user-defined macro (as shown by the examples
+      so far), or internally when implementing a user-defined macro (as shown below).
+      When <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code> is
+      used in the implementation of the user-defined macro, the caller of the user
+      macro will have to specify the extra parenthesis (see also <a href="../../test/paren.cpp" target="_top"><code class="literal">paren.cpp</code></a>):
+    </p><p>
+</p><pre class="programlisting"><span class="preprocessor">#define</span> <span class="identifier">TMP_ASSERT_PAREN</span><span class="special">(</span><span class="identifier">parenthesized_metafunction</span><span class="special">)</span> <span class="special">\</span>
+    <span class="comment">/* use `BOOST_IDENTITY_TYPE` in macro definition instead of invocation */</span> <span class="special">\</span>
+    <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">(</span><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">(</span><span class="identifier">parenthesized_metafunction</span><span class="special">)::</span><span class="identifier">value</span><span class="special">)</span>
+
+<span class="preprocessor">#define</span> <span class="identifier">TMP_ASSERT</span><span class="special">(</span><span class="identifier">metafunction</span><span class="special">)</span> <span class="special">\</span>
+    <span class="identifier">BOOST_STATIC_ASSERT</span><span class="special">(</span><span class="identifier">metafunction</span><span class="special">::</span><span class="identifier">value</span><span class="special">)</span>
+
+<span class="comment">// Specify only extra parenthesis `((...))`.</span>
+<span class="identifier">TMP_ASSERT_PAREN</span><span class="special">((</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;</span> <span class="keyword">const</span><span class="special">&gt;));</span>
+
+<span class="comment">// Specify both the extra parenthesis `((...))` and `BOOST_IDENTITY_TYPE` macro.</span>
+<span class="identifier">TMP_ASSERT</span><span class="special">(</span><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;</span> <span class="keyword">const</span><span class="special">&gt;)));</span>
+</pre><p>
+    </p><p>
+      However, note that the caller will <span class="emphasis"><em>always</em></span> have to specify
+      the extra parenthesis even when the macro parameters contain no comma:
+    </p><p>
+</p><pre class="programlisting"><span class="identifier">TMP_ASSERT_PAREN</span><span class="special">((</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_const</span><span class="special">&lt;</span><span class="keyword">int</span> <span class="keyword">const</span><span class="special">&gt;));</span> <span class="comment">// Always extra `((...))`.</span>
+
+<span class="identifier">TMP_ASSERT</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_const</span><span class="special">&lt;</span><span class="keyword">int</span> <span class="keyword">const</span><span class="special">&gt;);</span> <span class="comment">// No extra `((...))` and no macro.</span>
+</pre><p>
+    </p><p>
+      In some cases, using <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>
+      in the implementation of the user-defined macro might provide the best syntax
+      for the caller. For example, this is the case for <code class="computeroutput"><span class="identifier">BOOST_MPL_ASSERT</span></code>
+      because the majority of template meta-programming expressions contain unwrapped
+      commas so it is less confusing for the user to always specify the extra parenthesis
+      <code class="computeroutput"><span class="special">((...))</span></code> instead of using <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>:
+    </p><pre class="programlisting"><span class="identifier">BOOST_MPL_ASSERT</span><span class="special">((</span> <span class="comment">// Natural syntax.</span>
+    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">and_</span><span class="special">&lt;</span>
+          <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_const</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span>
+        <span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">is_reference</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span>
+    <span class="special">&gt;</span>
+<span class="special">));</span>
+</pre><p>
+      However, in other situations it might be preferable to not require the extra
+      parenthesis in the common cases and handle commas as special cases using <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>. For example, this
+      is the case for <a href="http://www.boost.org/libs/local_function" target="_top"><code class="computeroutput"><span class="identifier">BOOST_LOCAL_FUNCTION</span></code></a> for which always
+      requiring the extra parenthesis <code class="computeroutput"><span class="special">((...))</span></code>
+      around the types would lead to an unnatural syntax for the local function signature:
+    </p><pre class="programlisting"><span class="keyword">int</span> <span class="identifier">BOOST_LOCAL_FUNCTION</span><span class="special">(</span> <span class="special">((</span><span class="keyword">int</span><span class="special">&amp;))</span> <span class="identifier">x</span><span class="special">,</span> <span class="special">((</span><span class="keyword">int</span><span class="special">&amp;))</span> <span class="identifier">y</span> <span class="special">)</span> <span class="special">{</span> <span class="comment">// Unnatural syntax.</span>
+    <span class="keyword">return</span> <span class="identifier">x</span> <span class="special">+</span> <span class="identifier">y</span><span class="special">;</span>
+<span class="special">}</span> <span class="identifier">BOOST_LOCAL_FUNCTION_NAME</span><span class="special">(</span><span class="identifier">add</span><span class="special">)</span>
+</pre><p>
+      Instead requiring the user to specify <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>
+      only when needed allows for the more natural syntax <code class="computeroutput"><span class="identifier">BOOST_LOCAL_FUNCTION</span><span class="special">(</span><span class="keyword">int</span><span class="special">&amp;</span>
+      <span class="identifier">x</span><span class="special">,</span> <span class="keyword">int</span><span class="special">&amp;</span> <span class="identifier">y</span><span class="special">)</span></code> in the common cases when the parameter types
+      contain no comma (while still allowing to specify parameter types with commas
+      as special cases using <code class="computeroutput"><span class="identifier">BOOST_LOCAL_FUNCTION</span><span class="special">(</span><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;))&amp;</span>
+      <span class="identifier">x</span><span class="special">,</span> <span class="keyword">int</span><span class="special">&amp;</span> <span class="identifier">y</span><span class="special">)</span></code>).
+    </p></div><div class="section boost_utility_identitytype_annex__implementation" title="Annex: Implementation"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="boost_utility_identitytype.annex__implementation"></a><a class="link" href="#boost_utility_identitytype.annex__implementation" title="Annex: Implementation">Annex:
+    Implementation</a></h2></div></div></div><p>
+      The implementation of this library macro is equivalent to the following: <sup>[<a name="boost_utility_identitytype.annex__implementation.f0" href="#ftn.boost_utility_identitytype.annex__implementation.f0" class="footnote">3</a>]</sup>
+    </p><pre class="programlisting"><span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">function_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span>
+
+<span class="preprocessor">#define</span> <span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">(</span><span class="identifier">parenthesized_type</span><span class="special">)</span> <span class="special">\</span>
+    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">function_traits</span><span class="special">&lt;</span><span class="keyword">void</span> <span class="identifier">parenthesized_type</span><span class="special">&gt;::</span><span class="identifier">arg1_type</span>
+</pre><p>
+      Essentially, the type is wrapped between round parenthesis <code class="computeroutput"><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span>
+      <span class="keyword">char</span><span class="special">&gt;)</span></code>
+      so it can be passed as a single macro parameter even if it contains commas.
+      Then the parenthesized type is transformed into the type of a function returning
+      <code class="computeroutput"><span class="keyword">void</span></code> and with the specified type
+      as the type of the first and only argument <code class="computeroutput"><span class="keyword">void</span>
+      <span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">map</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">char</span><span class="special">&gt;)</span></code>. Finally, the type of the first argument
+      <code class="computeroutput"><span class="identifier">arg1_type</span></code> is extracted at compile-time
+      using the <code class="computeroutput"><span class="identifier">function_traits</span></code> meta-function
+      therefore obtaining the original type from the parenthesized type (effectively
+      stripping the extra parenthesis from around the specified type).
+    </p></div><div class="section reference" title="Reference"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="reference"></a>Reference</h2></div></div></div><div class="section header_boost_utility_identity_type_hpp" title="Header &lt;boost/utility/identity_type.hpp&gt;"><div class="titlepage"><div><div><h3 class="title"><a name="header.boost.utility.identity_type_hpp"></a>Header &lt;<a href="../../../../../boost/utility/identity_type.hpp" target="_top">boost/utility/identity_type.hpp</a>&gt;</h3></div></div></div><p>Wrap type expressions with round parenthesis so they can be passed to macros even if they contain commas. </p><pre class="synopsis">
+
+<a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a>(parenthesized_type)</pre><div class="refentry" title="Macro BOOST_IDENTITY_TYPE"><a name="BOOST_IDENTITY_TYPE"></a><div class="titlepage"></div><div class="refnamediv"><h2><span class="refentrytitle">Macro BOOST_IDENTITY_TYPE</span></h2><p>BOOST_IDENTITY_TYPE — This macro allows to wrap the specified type expression within extra round parenthesis so the type can be passed as a single macro parameter even if it contains commas (not already wrapped within round parenthesis). </p></div><h2 class="refsynopsisdiv-title">Synopsis</h2><div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="#header.boost.utility.identity_type_hpp" title="Header &lt;boost/utility/identity_type.hpp&gt;">boost/utility/identity_type.hpp</a>&gt;
+
+</span>BOOST_IDENTITY_TYPE(parenthesized_type)</pre></div><div class="refsect1" title="Description"><a name="id554262"></a><h2>Description</h2><p><span class="bold"><strong>Parameters:</strong></span> </p><div class="informaltable"><table class="table"><colgroup><col><col></colgroup><tbody><tr><td><span class="bold"><strong><code class="computeroutput">parenthesized_type</code></strong></span></td><td>The type expression to be passed as macro parameter wrapped by a single set of round parenthesis <code class="computeroutput">(...)</code>. This type expression can contain an arbitrary number of commas.  </td></tr></tbody></table></div><p>
+</p><p>This macro works on any C++03 compiler (it does not use variadic macros).</p><p>This macro must be prefixed by <code class="computeroutput">typename</code> when used within templates. Note that the compiler will not be able to automatically determine function template parameters when they are wrapped with this macro (these parameters need to be explicitly specified when calling the function template).</p><p>On some compilers (like GCC), using this macro on abstract types requires to add and remove a reference to the specified type. </p></div></div></div></div><div class="footnotes"><br><hr width="100" align="left"><div class="footnote"><p><sup>[<a id="ftn.boost_utility_identitytype.solution.f0" href="#boost_utility_identitytype.solution.f0" class="para">1</a>] </sup>
+        Using variadic macros, it would be possible to require a single set of extra
+        parenthesis <code class="computeroutput"><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">(</span></code><code class="literal"><span class="emphasis"><em>type</em></span></code><code class="computeroutput"><span class="special">)</span></code> instead of two <code class="computeroutput"><span class="identifier">BOOST_IDENTITY_TYPE</span><span class="special">((</span></code><code class="literal"><span class="emphasis"><em>type</em></span></code><code class="computeroutput"><span class="special">))</span></code> but variadic macros are not part of C++03
+        (even if nowadays they are supported by most modern compilers and they are
+        also part of C++11).
+      </p></div><div class="footnote"><p><sup>[<a id="ftn.boost_utility_identitytype.templates.f0" href="#boost_utility_identitytype.templates.f0" class="para">2</a>] </sup>
+        This is because the implementation of <code class="computeroutput"><a class="link" href="#BOOST_IDENTITY_TYPE" title="Macro BOOST_IDENTITY_TYPE">BOOST_IDENTITY_TYPE</a></code>
+        wraps the specified type within a meta-function.
+      </p></div><div class="footnote"><p><sup>[<a id="ftn.boost_utility_identitytype.annex__implementation.f0" href="#boost_utility_identitytype.annex__implementation.f0" class="para">3</a>] </sup>
+        There is absolutely no guarantee that the macro is actually implemented using
+        the code listed in this documentation. The listed code is for explanatory
+        purposes only.
+      </p></div></div></div></body></html>

identity_type/doc/identity_type.qbk

@@ -0,0 +1,165 @@
+
+[/ Copyright (C) 2009-2012 Lorenzo Caminiti ]
+[/ Distributed under the Boost Software License, Version 1.0 ]
+[/ (see accompanying file LICENSE_1_0.txt or a copy at ]
+[/ http://www.boost.org/LICENSE_1_0.txt) ]
+[/ Home at http://www.boost.org/libs/utility/identity_type ]
+
+[library Boost.Utility/IdentityType
+    [quickbook 1.5]
+    [version 1.0.0]
+    [copyright 2009-2012 Lorenzo Caminiti]
+    [purpose wraps types with round parenthesis]
+    [license
+        Distributed under the Boost Software License, Version 1.0
+        (see accompanying file LICENSE_1_0.txt or a copy at
+        [@http://www.boost.org/LICENSE_1_0.txt])
+    ]
+    [authors [Caminiti <email>lorcaminiti@gmail.com</email>, Lorenzo]]
+    [category Utilities]
+]
+
+This library allows to wrap types within round parenthesis so they can always be passed as macro parameters.
+
+[import ../test/var_error.cpp]
+[import ../test/var.cpp]
+[import ../test/template.cpp]
+[import ../test/abstract.cpp]
+[import ../test/paren.cpp]
+
+[section Motivation]
+
+Consider the following macro which declares a variable named `var`[^['n]] with the specified [^['type]] (see also [@../../test/var_error.cpp =var_error.cpp=]):
+
+[var_error]
+
+The first macro invocation works correctly declaring a variable named `var1` of type `int`.
+However, the second macro invocation fails generating a preprocessor error similar to the following:
+
+[pre
+    error: macro "VAR" passed 3 arguments, but takes just 2
+]
+
+That is because the `std::map` type passed as the first macro parameter contains a comma `,` not wrapped by round parenthesis `()`.
+The preprocessor interprets that unwrapped comma as a separation between macro parameters concluding that a total of three (and not two) parameters are passed to the macro in the following order:
+
+# `std::map<int`
+# `char>`
+# `2`
+
+Note that, differently from the compiler, the preprocessor only recognizes round parenthesis `()`.
+Angular `<>` and squared `[]` parenthesis are not recognized by the preprocessor when parsing macro parameters.
+
+[endsect]
+
+[section Solution]
+
+In some cases, it might be possible to workaround this issue by avoiding to pass the type expression to the macro all together.
+For example, in the case above a `typedef` could have been used to specify the type expression with the commas outside the macro (see also [@../../test/var.cpp =var.cpp=]):
+
+[var_typedef]
+
+When this is neither possible nor desired (e.g., see the function template `f` in the section below), this library header [headerref boost/utility/identity_type.hpp] defines a macro [macroref BOOST_IDENTITY_TYPE] which can be used to workaround the issue while keeping the type expression as one of the macro parameters (see also [@../../test/var.cpp =var.cpp=]).
+
+[var_ok]
+
+The [macroref BOOST_IDENTITY_TYPE] macro expands to an expression that evaluates (at compile-time) to the specified type.
+The specified type is never split into multiple macro parameters because it is always wrapped by a set of extra round parenthesis `()`.
+In fact, a total of two sets of round parenthesis must be used: The parenthesis to invoke the macro `BOOST_IDENTITY_TYPE(...)` plus the inner parenthesis to wrap the type passed to the macro `BOOST_IDENTITY_TYPE((...))`.
+
+This macro works on any [@http://www.open-std.org/JTC1/SC22/WG21/docs/standards C++03] compiler (and it does not use [@http://en.wikipedia.org/wiki/Variadic_macro variadic macros]).
+[footnote
+Using variadic macros, it would be possible to require a single set of extra parenthesis `BOOST_IDENTITY_TYPE(`[^['type]]`)` instead of two `BOOST_IDENTITY_TYPE((`[^['type]]`))` but variadic macros are not part of C++03 (even if nowadays they are supported by most modern compilers and they are also part of C++11).
+]
+The authors originally developed and tested this library using GNU Compiler Collection (GCC) C++ 4.5.3 (with and without C++11 features enabled `-std=c++0x`) on Cygwin and Miscrosoft Visual C++ (MSVC) 8.0 on Windows 7.
+See the library [@http://www.boost.org/development/tests/release/developer/utility-identity_type.html regressions test results] for more information on supported compilers and platforms.
+
+[endsect]
+
+[section Templates]
+
+This macro must be prefixed by `typename` when used within templates.
+For example, let's program a macro that declares a function parameter named `arg`[^['n]] with the specified [^['type]] (see also [@../../test/template.cpp =template.cpp=]):
+
+[template_f_decl]
+[template_f_call]
+
+However, note that the template parameter `char` must be manually specified when invoking the function as in `f<char>(a)`.
+In fact, when the [macroref BOOST_IDENTITY_TYPE] macro is used to wrap a function template parameter, the template parameter can no longer be automatically deduced by the compiler form the function call as `f(a)` would have done.
+[footnote
+This is because the implementation of [macroref BOOST_IDENTITY_TYPE] wraps the specified type within a meta-function.
+]
+(This limitation does not apply to class templates because class template parameters must always be explicitly specified.)
+In other words, without using the [macroref BOOST_IDENTITY_TYPE] macro, C++ would normally be able to automatically deduce the function template parameter as shown below:
+
+[template_g_decl]
+[template_g_call]
+
+[endsect]
+
+[section Abstract Types]
+
+On some compilers (e.g., GCC), using this macro on abstract types (i.e., classes with one or more pure virtual functions) generates a compiler error.
+This can be avoided by manipulating the type adding and removing a reference to it.
+
+Let's program a macro that performs a static assertion on a [@http://en.wikipedia.org/wiki/Template_metaprogramming Template Meta-Programming] (TMP) meta-function (similarly to Boost.MPL [@http://www.boost.org/doc/libs/1_36_0/libs/mpl/doc/refmanual/assert.html `BOOST_MPL_ASSERT`]).
+The [macroref BOOST_IDENTITY_TYPE] macro can be used to pass a meta-function with multiple template parameters to the assert macro (so to handle the commas separating the template parameters).
+In this case, if the meta-function is an abstract type, it needs to be manipulated adding and removing a reference to it (see also [@../../test/abstract.cpp =abstract.cpp=]):
+
+[abstract]
+
+[endsect]
+
+[section Annex: Usage]
+
+The [macroref BOOST_IDENTITY_TYPE] macro can be used either when calling a user-defined macro (as shown by the examples so far), or internally when implementing a user-defined macro (as shown below).
+When [macroref BOOST_IDENTITY_TYPE] is used in the implementation of the user-defined macro, the caller of the user macro will have to specify the extra parenthesis (see also [@../../test/paren.cpp =paren.cpp=]):
+
+[paren]
+
+However, note that the caller will /always/ have to specify the extra parenthesis even when the macro parameters contain no comma:
+
+[paren_always]
+
+In some cases, using [macroref BOOST_IDENTITY_TYPE] in the implementation of the user-defined macro might provide the best syntax for the caller.
+For example, this is the case for `BOOST_MPL_ASSERT` because the majority of template meta-programming expressions contain unwrapped commas so it is less confusing for the user to always specify the extra parenthesis `((...))` instead of using [macroref BOOST_IDENTITY_TYPE]:
+
+    BOOST_MPL_ASSERT(( // Natural syntax.
+        boost::mpl::and_<
+              boost::is_const<T>
+            , boost::is_reference<T>
+        >
+    ));
+
+However, in other situations it might be preferable to not require the extra parenthesis in the common cases and handle commas as special cases using [macroref BOOST_IDENTITY_TYPE].
+For example, this is the case for [@http://www.boost.org/libs/local_function `BOOST_LOCAL_FUNCTION`] for which always requiring the extra parenthesis `((...))` around the types would lead to an unnatural syntax for the local function signature:
+
+    int BOOST_LOCAL_FUNCTION( ((int&)) x, ((int&)) y ) { // Unnatural syntax.
+        return x + y;
+    } BOOST_LOCAL_FUNCTION_NAME(add)
+
+Instead requiring the user to specify [macroref BOOST_IDENTITY_TYPE] only when needed allows for the more natural syntax `BOOST_LOCAL_FUNCTION(int& x, int& y)` in the common cases when the parameter types contain no comma (while still allowing to specify parameter types with commas as special cases using `BOOST_LOCAL_FUNCTION(BOOST_IDENTITY_TYPE((std::map<int, char>))& x, int& y)`).
+
+[endsect]
+
+[section Annex: Implementation]
+
+The implementation of this library macro is equivalent to the following:
+[footnote
+There is absolutely no guarantee that the macro is actually implemented using the code listed in this documentation.
+The listed code is for explanatory purposes only.
+]
+
+    #include <boost/type_traits/function_traits.hpp>
+    
+    #define BOOST_IDENTITY_TYPE(parenthesized_type) \
+        boost::function_traits<void parenthesized_type>::arg1_type
+
+Essentially, the type is wrapped between round parenthesis `(std::map<int, char>)` so it can be passed as a single macro parameter even if it contains commas.
+Then the parenthesized type is transformed into the type of a function returning `void` and with the specified type as the type of the first and only argument `void (std::map<int, char>)`.
+Finally, the type of the first argument `arg1_type` is extracted at compile-time using the `function_traits` meta-function therefore obtaining the original type from the parenthesized type (effectively stripping the extra parenthesis from around the specified type).
+
+[endsect]
+
+[xinclude reference.xml]
+

identity_type/index.html

@@ -0,0 +1,15 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html>
+  <head>
+    <meta http-equiv="refresh" content="0; URL=doc/html/index.html">
+  </head>
+  <body>
+    Automatic redirection failed, click this 
+    <a href="doc/html/index.html">link</a> &nbsp;<hr>
+    <p>Copyright © Lorenzo Caminiti, 2009-2012</p>
+    <p>Distributed under the Boost Software License, Version 1.0 (see 
+    accompanying file <a href="../../../LICENSE_1_0.txt">
+    LICENSE_1_0.txt</a> or a copy at
+    <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</p>
+  </body>
+</html>

identity_type/test/Jamfile.v2

@@ -0,0 +1,16 @@
+
+# Copyright (C) 2009-2012 Lorenzo Caminiti
+# Distributed under the Boost Software License, Version 1.0
+# (see accompanying file LICENSE_1_0.txt or a copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+# Home at http://www.boost.org/libs/utility/identity_type
+
+import testing ;
+
+compile-fail var_error.cpp ;
+run var.cpp ;
+run template.cpp ;
+run abstract.cpp ;
+run noncopyable.cpp ;
+run paren.cpp ;
+

identity_type/test/abstract.cpp

@@ -0,0 +1,35 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+#include <boost/utility/identity_type.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/type_traits/add_reference.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+
+//[abstract
+#define TMP_ASSERT(metafunction) \
+    BOOST_STATIC_ASSERT(metafunction::value)
+
+template<typename T, bool b>
+struct abstract {
+    static const bool value = b;
+    virtual void f(T const& x) = 0;     // Pure virtual function.
+};
+
+TMP_ASSERT(
+    boost::remove_reference<            // Add and remove
+        BOOST_IDENTITY_TYPE((           // reference for
+            boost::add_reference<       // abstract type.
+                abstract<int, true>
+            >::type
+        ))
+    >::type
+);
+//]
+
+int main() { return 0; }
+

identity_type/test/noncopyable.cpp

@@ -0,0 +1,25 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+#include <boost/utility/identity_type.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/noncopyable.hpp>
+
+//[noncopyable
+#define TMP_ASSERT(metafunction) \
+    BOOST_STATIC_ASSERT(metafunction::value)
+
+template<typename T, T init>
+struct noncopyable : boost::noncopyable {
+    static const T value = init;
+};
+
+TMP_ASSERT(BOOST_IDENTITY_TYPE((noncopyable<bool, true>)));
+//]
+
+int main() { return 0; }
+

identity_type/test/paren.cpp

@@ -0,0 +1,35 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+#include <boost/utility/identity_type.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/type_traits/is_const.hpp>
+#include <map>
+
+//[paren
+#define TMP_ASSERT_PAREN(parenthesized_metafunction) \
+    /* use `BOOST_IDENTITY_TYPE` in macro definition instead of invocation */ \
+    BOOST_STATIC_ASSERT(BOOST_IDENTITY_TYPE(parenthesized_metafunction)::value)
+
+#define TMP_ASSERT(metafunction) \
+    BOOST_STATIC_ASSERT(metafunction::value)
+
+// Specify only extra parenthesis `((...))`.
+TMP_ASSERT_PAREN((boost::is_const<std::map<int, char> const>));
+
+// Specify both the extra parenthesis `((...))` and `BOOST_IDENTITY_TYPE` macro.
+TMP_ASSERT(BOOST_IDENTITY_TYPE((boost::is_const<std::map<int, char> const>)));
+//]
+
+//[paren_always
+TMP_ASSERT_PAREN((boost::is_const<int const>)); // Always extra `((...))`.
+
+TMP_ASSERT(boost::is_const<int const>); // No extra `((...))` and no macro.
+//]
+
+int main() { return 0; }
+

identity_type/test/template.cpp

@@ -0,0 +1,48 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+#include <boost/utility/identity_type.hpp>
+#include <map>
+#include <iostream>
+
+//[template_f_decl
+#define ARG(type, n) type arg ## n
+
+template<typename T>
+void f( // Prefix macro with `typename` in templates.
+    ARG(typename BOOST_IDENTITY_TYPE((std::map<int, T>)), 1)
+) {
+    std::cout << arg1[0] << std::endl;
+}
+//]
+
+//[template_g_decl
+template<typename T>
+void g(
+    std::map<int, T> arg1
+) {
+    std::cout << arg1[0] << std::endl;
+}
+//]
+
+int main() {
+    //[template_f_call
+    std::map<int, char> a;
+    a[0] = 'a';
+    
+    f<char>(a); // OK...
+    // f(a);    // ... but error.
+    //]
+
+    //[template_g_call
+    g<char>(a); // OK...
+    g(a);       // ... and also OK.
+    //]
+    
+    return 0;
+}
+

identity_type/test/var.cpp

@@ -0,0 +1,26 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+#include <map>
+
+#define VAR(type, n) type var ## n
+
+VAR(int, 1); // OK.
+
+//[var_typedef
+typedef std::map<int, char> map_type;
+VAR(map_type, 3); // OK.
+//]
+
+//[var_ok
+#include <boost/utility/identity_type.hpp>
+
+VAR(BOOST_IDENTITY_TYPE((std::map<int, char>)), 4); // OK.
+//]
+
+int main() { return 0; }
+

identity_type/test/var_error.cpp

@@ -0,0 +1,18 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+#include <map>
+
+//[var_error
+#define VAR(type, n) type var ## n
+
+VAR(int, 1);                    // OK.
+VAR(std::map<int, char>, 2);    // Error.
+//]
+
+int main() { return 0; }
+

in_place_factories.html

@@ -0,0 +1,19 @@
+<html>
+<head>
+    <title>Boost.InPlaceFactory</title>
+    <meta http-equiv="refresh" content="0; URL=./doc/html/utility/utilities/in_place_factory.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="./doc/html/utility/utilities/in_place_factory.html">./doc/html/utility/utilities/in_place_factory.html</a>
+<hr>
+<tt>
+    Boost.InPlaceFactory<br>
+    <br>
+    Distributed under the Boost Software License, Version 1.0.
+    (See accompanying file LICENSE_1_0.txt or copy at
+    <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+    <br>
+</tt>
+</body>
+</html>

include/boost/call_traits.hpp

@@ -1,10 +1,11 @@
-//  (C) Copyright Boost.org 2000. Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
 
-//  See http://www.boost.org for most recent version including documentation.
-//  See boost/detail/call_traits.hpp and boost/detail/ob_call_traits.hpp
+//  See boost/detail/call_traits.hpp
 //  for full copyright notices.
 
 #ifndef BOOST_CALL_TRAITS_HPP
@@ -14,10 +15,6 @@
 #include <boost/config.hpp>
 #endif
 
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-#include <boost/detail/ob_call_traits.hpp>
-#else
 #include <boost/detail/call_traits.hpp>
-#endif
 
 #endif // BOOST_CALL_TRAITS_HPP

include/boost/compressed_pair.hpp

@@ -1,10 +1,11 @@
-//  (C) Copyright Boost.org 2000. Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
+//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
 
-//  See http://www.boost.org for most recent version including documentation.
-//  See boost/detail/compressed_pair.hpp and boost/detail/ob_compressed_pair.hpp
+//  See boost/detail/compressed_pair.hpp
 //  for full copyright notices.
 
 #ifndef BOOST_COMPRESSED_PAIR_HPP
@@ -14,10 +15,6 @@
 #include <boost/config.hpp>
 #endif
 
-#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
-#include <boost/detail/ob_compressed_pair.hpp>
-#else
 #include <boost/detail/compressed_pair.hpp>
-#endif
 
 #endif // BOOST_COMPRESSED_PAIR_HPP

include/boost/detail/call_traits.hpp

@@ -1,10 +1,12 @@
 //  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
-//  Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
 
-//  See http://www.boost.org for most recent version including documentation.
+// call_traits: defines typedefs for function usage
+// (see libs/utility/call_traits.htm)
 
 /* Release notes:
    23rd July 2000:
@@ -19,31 +21,51 @@
 #ifndef BOOST_CONFIG_HPP
 #include <boost/config.hpp>
 #endif
+#include <cstddef>
 
-#ifndef BOOST_TYPE_TRAITS_HPP
-#include <boost/type_traits.hpp>
-#endif
+#include <boost/type_traits/is_arithmetic.hpp>
+#include <boost/type_traits/is_enum.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/detail/workaround.hpp>
 
 namespace boost{
 
 namespace detail{
 
+template <typename T, bool small_>
+struct ct_imp2
+{
+   typedef const T& param_type;
+};
+
+template <typename T>
+struct ct_imp2<T, true>
+{
+   typedef const T param_type;
+};
+
 template <typename T, bool isp, bool b1, bool b2>
 struct ct_imp
 {
    typedef const T& param_type;
 };
 
-template <typename T, bool isp>
-struct ct_imp<T, isp, true, true>
+template <typename T, bool isp, bool b2>
+struct ct_imp<T, isp, true, b2>
 {
-   typedef T const param_type;
+   typedef typename ct_imp2<T, sizeof(T) <= sizeof(void*)>::param_type param_type;
+};
+
+template <typename T, bool isp, bool b1>
+struct ct_imp<T, isp, b1, true>
+{
+   typedef typename ct_imp2<T, sizeof(T) <= sizeof(void*)>::param_type param_type;
 };
 
 template <typename T, bool b1, bool b2>
 struct ct_imp<T, true, b1, b2>
 {
-   typedef T const param_type;
+   typedef const T param_type;
 };
 
 }
@@ -61,7 +83,12 @@ public:
    // however compiler bugs prevent this - instead pass three bool's to
    // ct_imp<T,bool,bool,bool> and add an extra partial specialisation
    // of ct_imp to handle the logic. (JM)
-   typedef typename detail::ct_imp<T, ::boost::is_pointer<typename remove_const<T>::type>::value, ::boost::is_arithmetic<typename remove_const<T>::type>::value, sizeof(T) <= sizeof(void*)>::param_type param_type;
+   typedef typename boost::detail::ct_imp<
+      T,
+      ::boost::is_pointer<T>::value,
+      ::boost::is_arithmetic<T>::value,
+      ::boost::is_enum<T>::value
+   >::param_type param_type;
 };
 
 template <typename T>
@@ -73,7 +100,7 @@ struct call_traits<T&>
    typedef T& param_type;  // hh removed const
 };
 
-#if defined(__BORLANDC__) && (__BORLANDC__ <= 0x550)
+#if BOOST_WORKAROUND( BOOST_BORLANDC,  < 0x5A0 )
 // these are illegal specialisations; cv-qualifies applied to
 // references have no effect according to [8.3.2p1],
 // C++ Builder requires them though as it treats cv-qualified
@@ -102,8 +129,17 @@ struct call_traits<T&const volatile>
    typedef const T& const_reference;
    typedef T& param_type;  // hh removed const
 };
-#endif
 
+template <typename T>
+struct call_traits< T * >
+{
+   typedef T * value_type;
+   typedef T * & reference;
+   typedef T * const & const_reference;
+   typedef T * const param_type;  // hh removed const
+};
+#endif
+#if !defined(BOOST_NO_ARRAY_TYPE_SPECIALIZATIONS)
 template <typename T, std::size_t N>
 struct call_traits<T [N]>
 {
@@ -129,6 +165,7 @@ public:
    typedef const array_type& const_reference;
    typedef const T* const param_type;
 };
+#endif
 
 }
 

include/boost/detail/compressed_pair.hpp

@@ -1,12 +1,16 @@
 //  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
-//  Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
-
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
 //
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
+
+// compressed_pair: pair that "compresses" empty members
+// (see libs/utility/doc/html/compressed_pair.html)
+//
+// JM changes 25 Jan 2004:
+// For the case where T1 == T2 and both are empty, then first() and second()
+// should return different objects.
 // JM changes 25 Jan 2000:
 // Removed default arguments from compressed_pair_switch to get
 // C++ Builder 4 to accept them
@@ -17,20 +21,36 @@
 #define BOOST_DETAIL_COMPRESSED_PAIR_HPP
 
 #include <algorithm>
-#ifndef BOOST_TYPE_TRAITS_HPP
-#include <boost/type_traits.hpp>
-#endif
-#ifndef BOOST_CALL_TRAITS_HPP
-#include <boost/call_traits.hpp>
-#endif
 
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/is_empty.hpp>
+#include <boost/type_traits/is_final.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/call_traits.hpp>
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable:4512)
+#endif 
 namespace boost
 {
 
+template <class T1, class T2>
+class compressed_pair;
+
+
 // compressed_pair
 
 namespace details
 {
+   template<class T, bool E = boost::is_final<T>::value>
+   struct compressed_pair_empty
+      : ::boost::false_type { };
+
+   template<class T>
+   struct compressed_pair_empty<T, false>
+      : ::boost::is_empty<T> { };
+
    // JM altered 26 Jan 2000:
    template <class T1, class T2, bool IsSame, bool FirstEmpty, bool SecondEmpty>
    struct compressed_pair_switch;
@@ -73,7 +93,9 @@ namespace details
    template <typename T>
    inline void cp_swap(T& t1, T& t2)
    {
+#ifndef __GNUC__
       using std::swap;
+#endif
       swap(t1, t2);
    }
 
@@ -97,10 +119,10 @@ namespace details
       compressed_pair_imp(first_param_type x, second_param_type y)
          : first_(x), second_(y) {}
 
-      explicit compressed_pair_imp(first_param_type x)
+      compressed_pair_imp(first_param_type x)
          : first_(x) {}
 
-      explicit compressed_pair_imp(second_param_type y)
+      compressed_pair_imp(second_param_type y)
          : second_(y) {}
 
       first_reference       first()       {return first_;}
@@ -109,10 +131,10 @@ namespace details
       second_reference       second()       {return second_;}
       second_const_reference second() const {return second_;}
 
-      void swap(compressed_pair_imp& y)
+      void swap(::boost::compressed_pair<T1, T2>& y)
       {
-         cp_swap(first_, y.first_);
-         cp_swap(second_, y.second_);
+         cp_swap(first_, y.first());
+         cp_swap(second_, y.second());
       }
    private:
       first_type first_;
@@ -123,7 +145,7 @@ namespace details
 
    template <class T1, class T2>
    class compressed_pair_imp<T1, T2, 1>
-      : private T1
+      : protected ::boost::remove_cv<T1>::type
    {
    public:
       typedef T1                                                 first_type;
@@ -140,10 +162,10 @@ namespace details
       compressed_pair_imp(first_param_type x, second_param_type y)
          : first_type(x), second_(y) {}
 
-      explicit compressed_pair_imp(first_param_type x)
+      compressed_pair_imp(first_param_type x)
          : first_type(x) {}
 
-      explicit compressed_pair_imp(second_param_type y)
+      compressed_pair_imp(second_param_type y)
          : second_(y) {}
 
       first_reference       first()       {return *this;}
@@ -152,10 +174,10 @@ namespace details
       second_reference       second()       {return second_;}
       second_const_reference second() const {return second_;}
 
-      void swap(compressed_pair_imp& y)
+      void swap(::boost::compressed_pair<T1,T2>& y)
       {
          // no need to swap empty base class:
-         cp_swap(second_, y.second_);
+         cp_swap(second_, y.second());
       }
    private:
       second_type second_;
@@ -165,7 +187,7 @@ namespace details
 
    template <class T1, class T2>
    class compressed_pair_imp<T1, T2, 2>
-      : private T2
+      : protected ::boost::remove_cv<T2>::type
    {
    public:
       typedef T1                                                 first_type;
@@ -182,10 +204,10 @@ namespace details
       compressed_pair_imp(first_param_type x, second_param_type y)
          : second_type(y), first_(x) {}
 
-      explicit compressed_pair_imp(first_param_type x)
+      compressed_pair_imp(first_param_type x)
          : first_(x) {}
 
-      explicit compressed_pair_imp(second_param_type y)
+      compressed_pair_imp(second_param_type y)
          : second_type(y) {}
 
       first_reference       first()       {return first_;}
@@ -194,10 +216,10 @@ namespace details
       second_reference       second()       {return *this;}
       second_const_reference second() const {return *this;}
 
-      void swap(compressed_pair_imp& y)
+      void swap(::boost::compressed_pair<T1,T2>& y)
       {
          // no need to swap empty base class:
-         cp_swap(first_, y.first_);
+         cp_swap(first_, y.first());
       }
 
    private:
@@ -208,8 +230,8 @@ namespace details
 
    template <class T1, class T2>
    class compressed_pair_imp<T1, T2, 3>
-      : private T1,
-        private T2
+      : protected ::boost::remove_cv<T1>::type,
+        protected ::boost::remove_cv<T2>::type
    {
    public:
       typedef T1                                                 first_type;
@@ -226,10 +248,10 @@ namespace details
       compressed_pair_imp(first_param_type x, second_param_type y)
          : first_type(x), second_type(y) {}
 
-      explicit compressed_pair_imp(first_param_type x)
+      compressed_pair_imp(first_param_type x)
          : first_type(x) {}
 
-      explicit compressed_pair_imp(second_param_type y)
+      compressed_pair_imp(second_param_type y)
          : second_type(y) {}
 
       first_reference       first()       {return *this;}
@@ -239,16 +261,19 @@ namespace details
       second_const_reference second() const {return *this;}
       //
       // no need to swap empty bases:
-      void swap(compressed_pair_imp&) {}
+      void swap(::boost::compressed_pair<T1,T2>&) {}
    };
 
    // JM
    // 4    T1 == T2, T1 and T2 both empty
-   //      Note does not actually store an instance of T2 at all -
-   //      but reuses T1 base class for both first() and second().
+   //      Originally this did not store an instance of T2 at all
+   //      but that led to problems beause it meant &x.first() == &x.second()
+   //      which is not true for any other kind of pair, so now we store an instance
+   //      of T2 just in case the user is relying on first() and second() returning
+   //      different objects (albeit both empty).
    template <class T1, class T2>
    class compressed_pair_imp<T1, T2, 4>
-      : private T1
+      : protected ::boost::remove_cv<T1>::type
    {
    public:
       typedef T1                                                 first_type;
@@ -262,20 +287,21 @@ namespace details
 
       compressed_pair_imp() {}
 
-      compressed_pair_imp(first_param_type x, second_param_type)
-         : first_type(x) {}
+      compressed_pair_imp(first_param_type x, second_param_type y)
+         : first_type(x), m_second(y) {}
 
-      explicit compressed_pair_imp(first_param_type x)
-         : first_type(x) {}
+      compressed_pair_imp(first_param_type x)
+         : first_type(x), m_second(x) {}
 
       first_reference       first()       {return *this;}
       first_const_reference first() const {return *this;}
 
-      second_reference       second()       {return *this;}
-      second_const_reference second() const {return *this;}
+      second_reference       second()       {return m_second;}
+      second_const_reference second() const {return m_second;}
 
-      void swap(compressed_pair_imp&) {}
+      void swap(::boost::compressed_pair<T1,T2>&) {}
    private:
+      T2 m_second;
    };
 
    // 5    T1 == T2 and are not empty:   //JM
@@ -298,7 +324,7 @@ namespace details
       compressed_pair_imp(first_param_type x, second_param_type y)
          : first_(x), second_(y) {}
 
-      explicit compressed_pair_imp(first_param_type x)
+      compressed_pair_imp(first_param_type x)
          : first_(x), second_(x) {}
 
       first_reference       first()       {return first_;}
@@ -307,10 +333,10 @@ namespace details
       second_reference       second()       {return second_;}
       second_const_reference second() const {return second_;}
 
-      void swap(compressed_pair_imp<T1, T2, 5>& y)
+      void swap(::boost::compressed_pair<T1, T2>& y)
       {
-         cp_swap(first_, y.first_);
-         cp_swap(second_, y.second_);
+         cp_swap(first_, y.first());
+         cp_swap(second_, y.second());
       }
    private:
       first_type first_;
@@ -321,13 +347,15 @@ namespace details
 
 template <class T1, class T2>
 class compressed_pair
-   : private ::boost::details::compressed_pair_imp<T1, T2,
+#ifndef BOOST_UTILITY_DOCS
+    : private ::boost::details::compressed_pair_imp<T1, T2,
              ::boost::details::compressed_pair_switch<
                     T1,
                     T2,
                     ::boost::is_same<typename remove_cv<T1>::type, typename remove_cv<T2>::type>::value,
-                    ::boost::is_empty<T1>::value,
-                    ::boost::is_empty<T2>::value>::value>
+                    ::boost::details::compressed_pair_empty<T1>::value,
+                    ::boost::details::compressed_pair_empty<T2>::value>::value>
+#endif // BOOST_UTILITY_DOCS
 {
 private:
    typedef details::compressed_pair_imp<T1, T2,
@@ -335,8 +363,8 @@ private:
                     T1,
                     T2,
                     ::boost::is_same<typename remove_cv<T1>::type, typename remove_cv<T2>::type>::value,
-                    ::boost::is_empty<T1>::value,
-                    ::boost::is_empty<T2>::value>::value> base;
+                    ::boost::details::compressed_pair_empty<T1>::value,
+                    ::boost::details::compressed_pair_empty<T2>::value>::value> base;
 public:
    typedef T1                                                 first_type;
    typedef T2                                                 second_type;
@@ -366,13 +394,15 @@ public:
 //
 template <class T>
 class compressed_pair<T, T>
+#ifndef BOOST_UTILITY_DOCS
    : private details::compressed_pair_imp<T, T,
              ::boost::details::compressed_pair_switch<
                     T,
                     T,
                     ::boost::is_same<typename remove_cv<T>::type, typename remove_cv<T>::type>::value,
-                    ::boost::is_empty<T>::value,
-                    ::boost::is_empty<T>::value>::value>
+                    ::boost::details::compressed_pair_empty<T>::value,
+                    ::boost::details::compressed_pair_empty<T>::value>::value>
+#endif // BOOST_UTILITY_DOCS
 {
 private:
    typedef details::compressed_pair_imp<T, T,
@@ -380,8 +410,8 @@ private:
                     T,
                     T,
                     ::boost::is_same<typename remove_cv<T>::type, typename remove_cv<T>::type>::value,
-                    ::boost::is_empty<T>::value,
-                    ::boost::is_empty<T>::value>::value> base;
+                    ::boost::details::compressed_pair_empty<T>::value,
+                    ::boost::details::compressed_pair_empty<T>::value>::value> base;
 public:
    typedef T                                                  first_type;
    typedef T                                                  second_type;
@@ -394,7 +424,10 @@ public:
 
             compressed_pair() : base() {}
             compressed_pair(first_param_type x, second_param_type y) : base(x, y) {}
-   explicit compressed_pair(first_param_type x) : base(x) {}
+#if !(defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x530))
+   explicit 
+#endif
+      compressed_pair(first_param_type x) : base(x) {}
 
    first_reference       first()       {return base::first();}
    first_const_reference first() const {return base::first();}
@@ -402,7 +435,7 @@ public:
    second_reference       second()       {return base::second();}
    second_const_reference second() const {return base::second();}
 
-   void swap(compressed_pair& y) { base::swap(y); }
+   void swap(::boost::compressed_pair<T,T>& y) { base::swap(y); }
 };
 
 template <class T1, class T2>
@@ -415,6 +448,9 @@ swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
 
 } // boost
 
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif 
+
 #endif // BOOST_DETAIL_COMPRESSED_PAIR_HPP
 
-

include/boost/detail/ob_call_traits.hpp

@@ -1,35 +0,0 @@
-//  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
-//  Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
-//
-//  Crippled version for crippled compilers:
-//
-#ifndef BOOST_OB_CALL_TRAITS_HPP
-#define BOOST_OB_CALL_TRAITS_HPP
-
-#ifndef BOOST_CONFIG_HPP
-#include <boost/config.hpp>
-#endif
-
-#ifndef BOOST_TYPE_TRAITS_HPP
-#include <boost/type_traits.hpp>
-#endif
-
-namespace boost{
-
-template <typename T>
-struct call_traits
-{
-   typedef T value_type;
-   typedef T& reference;
-   typedef const T& const_reference;
-   typedef const T& param_type;
-};
-
-}
-
-#endif // BOOST_OB_CALL_TRAITS_HPP

include/boost/detail/ob_compressed_pair.hpp

@@ -1,12 +1,18 @@
 //  (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
-//  Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+//
+//  See http://www.boost.org/libs/utility for most recent version including documentation.
+//  see libs/utility/compressed_pair.hpp
 //
 /* Release notes:
+   20 Jan 2001:
+        Fixed obvious bugs (David Abrahams)
+   07 Oct 2000:
+      Added better single argument constructor support.
+   03 Oct 2000:
+      Added VC6 support (JM).
    23rd July 2000:
       Additional comments added. (JM)
    Jan 2000:
@@ -14,13 +20,17 @@
       - John Maddock Jan 2000.
 */
 
-
+#ifndef BOOST_UTILITY_DOCS
 #ifndef BOOST_OB_COMPRESSED_PAIR_HPP
 #define BOOST_OB_COMPRESSED_PAIR_HPP
 
+
 #include <algorithm>
-#ifndef BOOST_TYPE_TRAITS_HPP
-#include <boost/type_traits.hpp>
+#ifndef BOOST_OBJECT_TYPE_TRAITS_HPP
+#include <boost/type_traits/object_traits.hpp>
+#endif
+#ifndef BOOST_SAME_TRAITS_HPP
+#include <boost/type_traits/same_traits.hpp>
 #endif
 #ifndef BOOST_CALL_TRAITS_HPP
 #include <boost/call_traits.hpp>
@@ -28,6 +38,415 @@
 
 namespace boost
 {
+#ifdef BOOST_MSVC6_MEMBER_TEMPLATES
+//
+// use member templates to emulate
+// partial specialisation.  Note that due to
+// problems with overload resolution with VC6
+// each of the compressed_pair versions that follow
+// have one template single-argument constructor
+// in place of two specific constructors:
+//
+
+template <class T1, class T2>
+class compressed_pair;
+
+namespace detail{
+
+template <class A, class T1, class T2>
+struct best_conversion_traits
+{
+   typedef char one;
+   typedef char (&two)[2];
+   static A a;
+   static one test(T1);
+   static two test(T2);
+
+   enum { value = sizeof(test(a)) };
+};
+
+template <int>
+struct init_one;
+
+template <>
+struct init_one<1>
+{
+   template <class A, class T1, class T2>
+   static void init(const A& a, T1* p1, T2*)
+   {
+      *p1 = a;
+   }
+};
+
+template <>
+struct init_one<2>
+{
+   template <class A, class T1, class T2>
+   static void init(const A& a, T1*, T2* p2)
+   {
+      *p2 = a;
+   }
+};
+
+
+// T1 != T2, both non-empty
+template <class T1, class T2>
+class compressed_pair_0
+{
+private:
+   T1 _first;
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_0() : _first(), _second() {}
+            compressed_pair_0(first_param_type x, second_param_type y) : _first(x), _second(y) {}
+   template <class A>
+   explicit compressed_pair_0(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, &_second);
+   }
+   compressed_pair_0(const ::boost::compressed_pair<T1,T2>& x)
+      : _first(x.first()), _second(x.second()) {}
+
+#if 0
+  compressed_pair_0& operator=(const compressed_pair_0& x) {
+    cout << "assigning compressed pair 0" << endl;
+    _first = x._first;
+    _second = x._second;
+    cout << "finished assigning compressed pair 0" << endl;
+    return *this;
+  }
+#endif
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair_0& y)
+   {
+      using std::swap;
+      swap(_first, y._first);
+      swap(_second, y._second);
+   }
+};
+
+// T1 != T2, T2 empty
+template <class T1, class T2>
+class compressed_pair_1 : T2
+{
+private:
+   T1 _first;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_1() : T2(), _first() {}
+            compressed_pair_1(first_param_type x, second_param_type y) : T2(y), _first(x) {}
+
+   template <class A>
+   explicit compressed_pair_1(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, &_first, static_cast<T2*>(this));
+   }
+
+   compressed_pair_1(const ::boost::compressed_pair<T1,T2>& x)
+      : T2(x.second()), _first(x.first()) {}
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return *this; }
+   second_const_reference second() const { return *this; }
+
+   void swap(compressed_pair_1& y)
+   {
+      // no need to swap empty base class:
+      using std::swap;
+      swap(_first, y._first);
+   }
+};
+
+// T1 != T2, T1 empty
+template <class T1, class T2>
+class compressed_pair_2 : T1
+{
+private:
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_2() : T1(), _second() {}
+            compressed_pair_2(first_param_type x, second_param_type y) : T1(x), _second(y) {}
+   template <class A>
+   explicit compressed_pair_2(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), &_second);
+   }
+   compressed_pair_2(const ::boost::compressed_pair<T1,T2>& x)
+      : T1(x.first()), _second(x.second()) {}
+
+#if 0
+  compressed_pair_2& operator=(const compressed_pair_2& x) {
+    cout << "assigning compressed pair 2" << endl;
+    T1::operator=(x);
+    _second = x._second;
+    cout << "finished assigning compressed pair 2" << endl;
+    return *this;
+  }
+#endif
+   first_reference       first()       { return *this; }
+   first_const_reference first() const { return *this; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair_2& y)
+   {
+      // no need to swap empty base class:
+      using std::swap;
+      swap(_second, y._second);
+   }
+};
+
+// T1 != T2, both empty
+template <class T1, class T2>
+class compressed_pair_3 : T1, T2
+{
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_3() : T1(), T2() {}
+            compressed_pair_3(first_param_type x, second_param_type y) : T1(x), T2(y) {}
+   template <class A>
+   explicit compressed_pair_3(const A& val)
+   {
+      init_one<best_conversion_traits<A, T1, T2>::value>::init(val, static_cast<T1*>(this), static_cast<T2*>(this));
+   }
+   compressed_pair_3(const ::boost::compressed_pair<T1,T2>& x)
+      : T1(x.first()), T2(x.second()) {}
+
+   first_reference       first()       { return *this; }
+   first_const_reference first() const { return *this; }
+
+   second_reference       second()       { return *this; }
+   second_const_reference second() const { return *this; }
+
+   void swap(compressed_pair_3& y)
+   {
+      // no need to swap empty base classes:
+   }
+};
+
+// T1 == T2, and empty
+template <class T1, class T2>
+class compressed_pair_4 : T1
+{
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_4() : T1() {}
+            compressed_pair_4(first_param_type x, second_param_type y) : T1(x), m_second(y) {}
+   // only one single argument constructor since T1 == T2
+   explicit compressed_pair_4(first_param_type x) : T1(x), m_second(x) {}
+   compressed_pair_4(const ::boost::compressed_pair<T1,T2>& x)
+      : T1(x.first()), m_second(x.second()) {}
+
+   first_reference       first()       { return *this; }
+   first_const_reference first() const { return *this; }
+
+   second_reference       second()       { return m_second; }
+   second_const_reference second() const { return m_second; }
+
+   void swap(compressed_pair_4& y)
+   {
+      // no need to swap empty base classes:
+   }
+private:
+   T2 m_second;
+};
+
+// T1 == T2, not empty
+template <class T1, class T2>
+class compressed_pair_5
+{
+private:
+   T1 _first;
+   T2 _second;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair_5() : _first(), _second() {}
+            compressed_pair_5(first_param_type x, second_param_type y) : _first(x), _second(y) {}
+   // only one single argument constructor since T1 == T2
+   explicit compressed_pair_5(first_param_type x) : _first(x), _second(x) {}
+   compressed_pair_5(const ::boost::compressed_pair<T1,T2>& c) 
+      : _first(c.first()), _second(c.second()) {}
+
+   first_reference       first()       { return _first; }
+   first_const_reference first() const { return _first; }
+
+   second_reference       second()       { return _second; }
+   second_const_reference second() const { return _second; }
+
+   void swap(compressed_pair_5& y)
+   {
+      using std::swap;
+      swap(_first, y._first);
+      swap(_second, y._second);
+   }
+};
+
+template <bool e1, bool e2, bool same>
+struct compressed_pair_chooser
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_0<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<false, true, false>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_1<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<true, false, false>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_2<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<true, true, false>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_3<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<true, true, true>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_4<T1, T2> type;
+   };
+};
+
+template <>
+struct compressed_pair_chooser<false, false, true>
+{
+   template <class T1, class T2>
+   struct rebind
+   {
+      typedef compressed_pair_5<T1, T2> type;
+   };
+};
+
+template <class T1, class T2>
+struct compressed_pair_traits
+{
+private:
+   typedef compressed_pair_chooser<is_empty<T1>::value, is_empty<T2>::value, is_same<T1,T2>::value> chooser;
+   typedef typename chooser::template rebind<T1, T2> bound_type;
+public:
+   typedef typename bound_type::type type;
+};
+
+} // namespace detail
+
+template <class T1, class T2>
+class compressed_pair : public detail::compressed_pair_traits<T1, T2>::type
+{
+private:
+   typedef typename detail::compressed_pair_traits<T1, T2>::type base_type;
+public:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   typedef typename call_traits<first_type>::reference        first_reference;
+   typedef typename call_traits<second_type>::reference       second_reference;
+   typedef typename call_traits<first_type>::const_reference  first_const_reference;
+   typedef typename call_traits<second_type>::const_reference second_const_reference;
+
+            compressed_pair() : base_type() {}
+            compressed_pair(first_param_type x, second_param_type y) : base_type(x, y) {}
+   template <class A>
+   explicit compressed_pair(const A& x) : base_type(x){}
+
+   first_reference       first()       { return base_type::first(); }
+   first_const_reference first() const { return base_type::first(); }
+
+   second_reference       second()       { return base_type::second(); }
+   second_const_reference second() const { return base_type::second(); }
+};
+
+template <class T1, class T2>
+inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
+{
+   x.swap(y);
+}
+
+#else
+// no partial specialisation, no member templates:
 
 template <class T1, class T2>
 class compressed_pair
@@ -71,7 +490,9 @@ inline void swap(compressed_pair<T1, T2>& x, compressed_pair<T1, T2>& y)
    x.swap(y);
 }
 
+#endif
+
 } // boost
 
 #endif // BOOST_OB_COMPRESSED_PAIR_HPP
-
+#endif // BOOST_UTILITY_DOCS

include/boost/operators_v1.hpp

@@ -0,0 +1,951 @@
+//  Boost operators.hpp header file  ----------------------------------------//
+
+//  (C) Copyright David Abrahams, Jeremy Siek, Daryle Walker 1999-2001.
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/utility/operators.htm for documentation.
+
+//  Revision History
+//  22 Feb 16 Preserve old work-arounds. (Daniel Frey)
+//  16 Dec 10 Limit warning suppression for 4284 to older versions of VC++
+//            (Matthew Bradbury, fixes #4432)
+//  07 Aug 08 Added "euclidean" spelling. (Daniel Frey)
+//  03 Apr 08 Make sure "convertible to bool" is sufficient
+//            for T::operator<, etc. (Daniel Frey)
+//  24 May 07 Changed empty_base to depend on T, see
+//            http://svn.boost.org/trac/boost/ticket/979
+//  21 Oct 02 Modified implementation of operators to allow compilers with a
+//            correct named return value optimization (NRVO) to produce optimal
+//            code.  (Daniel Frey)
+//  02 Dec 01 Bug fixed in random_access_iteratable.  (Helmut Zeisel)
+//  28 Sep 01 Factored out iterator operator groups.  (Daryle Walker)
+//  27 Aug 01 'left' form for non commutative operators added;
+//            additional classes for groups of related operators added;
+//            workaround for empty base class optimization
+//            bug of GCC 3.0 (Helmut Zeisel)
+//  25 Jun 01 output_iterator_helper changes: removed default template 
+//            parameters, added support for self-proxying, additional 
+//            documentation and tests (Aleksey Gurtovoy)
+//  29 May 01 Added operator classes for << and >>.  Added input and output
+//            iterator helper classes.  Added classes to connect equality and
+//            relational operators.  Added classes for groups of related
+//            operators.  Reimplemented example operator and iterator helper
+//            classes in terms of the new groups.  (Daryle Walker, with help
+//            from Alexy Gurtovoy)
+//  11 Feb 01 Fixed bugs in the iterator helpers which prevented explicitly
+//            supplied arguments from actually being used (Dave Abrahams)
+//  04 Jul 00 Fixed NO_OPERATORS_IN_NAMESPACE bugs, major cleanup and
+//            refactoring of compiler workarounds, additional documentation
+//            (Alexy Gurtovoy and Mark Rodgers with some help and prompting from
+//            Dave Abrahams) 
+//  28 Jun 00 General cleanup and integration of bugfixes from Mark Rodgers and
+//            Jeremy Siek (Dave Abrahams)
+//  20 Jun 00 Changes to accommodate Borland C++Builder 4 and Borland C++ 5.5
+//            (Mark Rodgers)
+//  20 Jun 00 Minor fixes to the prior revision (Aleksey Gurtovoy)
+//  10 Jun 00 Support for the base class chaining technique was added
+//            (Aleksey Gurtovoy). See documentation and the comments below 
+//            for the details. 
+//  12 Dec 99 Initial version with iterator operators (Jeremy Siek)
+//  18 Nov 99 Change name "divideable" to "dividable", remove unnecessary
+//            specializations of dividable, subtractable, modable (Ed Brey) 
+//  17 Nov 99 Add comments (Beman Dawes)
+//            Remove unnecessary specialization of operators<> (Ed Brey)
+//  15 Nov 99 Fix less_than_comparable<T,U> second operand type for first two
+//            operators.(Beman Dawes)
+//  12 Nov 99 Add operators templates (Ed Brey)
+//  11 Nov 99 Add single template parameter version for compilers without
+//            partial specialization (Beman Dawes)
+//  10 Nov 99 Initial version
+
+// 10 Jun 00:
+// An additional optional template parameter was added to most of 
+// operator templates to support the base class chaining technique (see 
+// documentation for the details). Unfortunately, a straightforward
+// implementation of this change would have broken compatibility with the
+// previous version of the library by making it impossible to use the same
+// template name (e.g. 'addable') for both the 1- and 2-argument versions of
+// an operator template. This implementation solves the backward-compatibility
+// issue at the cost of some simplicity.
+//
+// One of the complications is an existence of special auxiliary class template
+// 'is_chained_base<>' (see 'detail' namespace below), which is used
+// to determine whether its template parameter is a library's operator template
+// or not. You have to specialize 'is_chained_base<>' for each new 
+// operator template you add to the library.
+//
+// However, most of the non-trivial implementation details are hidden behind 
+// several local macros defined below, and as soon as you understand them,
+// you understand the whole library implementation. 
+
+#ifndef BOOST_OPERATORS_V1_HPP
+#define BOOST_OPERATORS_V1_HPP
+
+#include <cstddef>
+#include <iterator>
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+
+#if defined(__sgi) && !defined(__GNUC__)
+#   pragma set woff 1234
+#endif
+
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1600)
+#   pragma warning( disable : 4284 ) // complaint about return type of 
+#endif                               // operator-> not begin a UDT
+
+namespace boost {
+namespace detail {
+
+template <typename T> class empty_base {};
+
+} // namespace detail
+} // namespace boost
+
+// In this section we supply the xxxx1 and xxxx2 forms of the operator
+// templates, which are explicitly targeted at the 1-type-argument and
+// 2-type-argument operator forms, respectively. Some compilers get confused
+// when inline friend functions are overloaded in namespaces other than the
+// global namespace. When BOOST_NO_OPERATORS_IN_NAMESPACE is defined, all of
+// these templates must go in the global namespace.
+
+#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE
+namespace boost
+{
+#endif
+
+//  Basic operator classes (contributed by Dave Abrahams) ------------------//
+
+//  Note that friend functions defined in a class are implicitly inline.
+//  See the C++ std, 11.4 [class.friend] paragraph 5
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct less_than_comparable2 : B
+{
+     friend bool operator<=(const T& x, const U& y) { return !static_cast<bool>(x > y); }
+     friend bool operator>=(const T& x, const U& y) { return !static_cast<bool>(x < y); }
+     friend bool operator>(const U& x, const T& y)  { return y < x; }
+     friend bool operator<(const U& x, const T& y)  { return y > x; }
+     friend bool operator<=(const U& x, const T& y) { return !static_cast<bool>(y < x); }
+     friend bool operator>=(const U& x, const T& y) { return !static_cast<bool>(y > x); }
+};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct less_than_comparable1 : B
+{
+     friend bool operator>(const T& x, const T& y)  { return y < x; }
+     friend bool operator<=(const T& x, const T& y) { return !static_cast<bool>(y < x); }
+     friend bool operator>=(const T& x, const T& y) { return !static_cast<bool>(x < y); }
+};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct equality_comparable2 : B
+{
+     friend bool operator==(const U& y, const T& x) { return x == y; }
+     friend bool operator!=(const U& y, const T& x) { return !static_cast<bool>(x == y); }
+     friend bool operator!=(const T& y, const U& x) { return !static_cast<bool>(y == x); }
+};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct equality_comparable1 : B
+{
+     friend bool operator!=(const T& x, const T& y) { return !static_cast<bool>(x == y); }
+};
+
+// A macro which produces "name_2left" from "name".
+#define BOOST_OPERATOR2_LEFT(name) name##2##_##left
+
+//  NRVO-friendly implementation (contributed by Daniel Frey) ---------------//
+
+#if defined(BOOST_HAS_NRVO) || defined(BOOST_FORCE_SYMMETRIC_OPERATORS)
+
+// This is the optimal implementation for ISO/ANSI C++,
+// but it requires the compiler to implement the NRVO.
+// If the compiler has no NRVO, this is the best symmetric
+// implementation available.
+
+#define BOOST_BINARY_OPERATOR_COMMUTATIVE( NAME, OP )                         \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >        \
+struct NAME##2 : B                                                            \
+{                                                                             \
+  friend T operator OP( const T& lhs, const U& rhs )                          \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                              \
+  friend T operator OP( const U& lhs, const T& rhs )                          \
+    { T nrv( rhs ); nrv OP##= lhs; return nrv; }                              \
+};                                                                            \
+                                                                              \
+template <class T, class B = ::boost::detail::empty_base<T> >                 \
+struct NAME##1 : B                                                            \
+{                                                                             \
+  friend T operator OP( const T& lhs, const T& rhs )                          \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                              \
+};
+
+#define BOOST_BINARY_OPERATOR_NON_COMMUTATIVE( NAME, OP )               \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >  \
+struct NAME##2 : B                                                      \
+{                                                                       \
+  friend T operator OP( const T& lhs, const U& rhs )                    \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                        \
+};                                                                      \
+                                                                        \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >  \
+struct BOOST_OPERATOR2_LEFT(NAME) : B                                   \
+{                                                                       \
+  friend T operator OP( const U& lhs, const T& rhs )                    \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                        \
+};                                                                      \
+                                                                        \
+template <class T, class B = ::boost::detail::empty_base<T> >           \
+struct NAME##1 : B                                                      \
+{                                                                       \
+  friend T operator OP( const T& lhs, const T& rhs )                    \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                        \
+};
+
+#else // defined(BOOST_HAS_NRVO) || defined(BOOST_FORCE_SYMMETRIC_OPERATORS)
+
+// For compilers without NRVO the following code is optimal, but not
+// symmetric!  Note that the implementation of
+// BOOST_OPERATOR2_LEFT(NAME) only looks cool, but doesn't provide
+// optimization opportunities to the compiler :)
+
+#define BOOST_BINARY_OPERATOR_COMMUTATIVE( NAME, OP )                   \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >  \
+struct NAME##2 : B                                                      \
+{                                                                       \
+  friend T operator OP( T lhs, const U& rhs ) { return lhs OP##= rhs; } \
+  friend T operator OP( const U& lhs, T rhs ) { return rhs OP##= lhs; } \
+};                                                                      \
+                                                                        \
+template <class T, class B = ::boost::detail::empty_base<T> >           \
+struct NAME##1 : B                                                      \
+{                                                                       \
+  friend T operator OP( T lhs, const T& rhs ) { return lhs OP##= rhs; } \
+};
+
+#define BOOST_BINARY_OPERATOR_NON_COMMUTATIVE( NAME, OP )               \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >  \
+struct NAME##2 : B                                                      \
+{                                                                       \
+  friend T operator OP( T lhs, const U& rhs ) { return lhs OP##= rhs; } \
+};                                                                      \
+                                                                        \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >  \
+struct BOOST_OPERATOR2_LEFT(NAME) : B                                   \
+{                                                                       \
+  friend T operator OP( const U& lhs, const T& rhs )                    \
+    { return T( lhs ) OP##= rhs; }                                      \
+};                                                                      \
+                                                                        \
+template <class T, class B = ::boost::detail::empty_base<T> >           \
+struct NAME##1 : B                                                      \
+{                                                                       \
+  friend T operator OP( T lhs, const T& rhs ) { return lhs OP##= rhs; } \
+};
+
+#endif // defined(BOOST_HAS_NRVO) || defined(BOOST_FORCE_SYMMETRIC_OPERATORS)
+
+BOOST_BINARY_OPERATOR_COMMUTATIVE( multipliable, * )
+BOOST_BINARY_OPERATOR_COMMUTATIVE( addable, + )
+BOOST_BINARY_OPERATOR_NON_COMMUTATIVE( subtractable, - )
+BOOST_BINARY_OPERATOR_NON_COMMUTATIVE( dividable, / )
+BOOST_BINARY_OPERATOR_NON_COMMUTATIVE( modable, % )
+BOOST_BINARY_OPERATOR_COMMUTATIVE( xorable, ^ )
+BOOST_BINARY_OPERATOR_COMMUTATIVE( andable, & )
+BOOST_BINARY_OPERATOR_COMMUTATIVE( orable, | )
+
+#undef BOOST_BINARY_OPERATOR_COMMUTATIVE
+#undef BOOST_BINARY_OPERATOR_NON_COMMUTATIVE
+#undef BOOST_OPERATOR2_LEFT
+
+//  incrementable and decrementable contributed by Jeremy Siek
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct incrementable : B
+{
+  friend T operator++(T& x, int)
+  {
+    incrementable_type nrv(x);
+    ++x;
+    return nrv;
+  }
+private: // The use of this typedef works around a Borland bug
+  typedef T incrementable_type;
+};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct decrementable : B
+{
+  friend T operator--(T& x, int)
+  {
+    decrementable_type nrv(x);
+    --x;
+    return nrv;
+  }
+private: // The use of this typedef works around a Borland bug
+  typedef T decrementable_type;
+};
+
+//  Iterator operator classes (contributed by Jeremy Siek) ------------------//
+
+template <class T, class P, class B = ::boost::detail::empty_base<T> >
+struct dereferenceable : B
+{
+  P operator->() const
+  { 
+    return &*static_cast<const T&>(*this); 
+  }
+};
+
+template <class T, class I, class R, class B = ::boost::detail::empty_base<T> >
+struct indexable : B
+{
+  R operator[](I n) const
+  {
+    return *(static_cast<const T&>(*this) + n);
+  }
+};
+
+//  More operator classes (contributed by Daryle Walker) --------------------//
+//  (NRVO-friendly implementation contributed by Daniel Frey) ---------------//
+
+#if defined(BOOST_HAS_NRVO) || defined(BOOST_FORCE_SYMMETRIC_OPERATORS)
+
+#define BOOST_BINARY_OPERATOR( NAME, OP )                                     \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >        \
+struct NAME##2 : B                                                            \
+{                                                                             \
+  friend T operator OP( const T& lhs, const U& rhs )                          \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                              \
+};                                                                            \
+                                                                              \
+template <class T, class B = ::boost::detail::empty_base<T> >                 \
+struct NAME##1 : B                                                            \
+{                                                                             \
+  friend T operator OP( const T& lhs, const T& rhs )                          \
+    { T nrv( lhs ); nrv OP##= rhs; return nrv; }                              \
+};
+
+#else // defined(BOOST_HAS_NRVO) || defined(BOOST_FORCE_SYMMETRIC_OPERATORS)
+
+#define BOOST_BINARY_OPERATOR( NAME, OP )                                     \
+template <class T, class U, class B = ::boost::detail::empty_base<T> >        \
+struct NAME##2 : B                                                            \
+{                                                                             \
+  friend T operator OP( T lhs, const U& rhs ) { return lhs OP##= rhs; }       \
+};                                                                            \
+                                                                              \
+template <class T, class B = ::boost::detail::empty_base<T> >                 \
+struct NAME##1 : B                                                            \
+{                                                                             \
+  friend T operator OP( T lhs, const T& rhs ) { return lhs OP##= rhs; }       \
+};
+
+#endif // defined(BOOST_HAS_NRVO) || defined(BOOST_FORCE_SYMMETRIC_OPERATORS)
+
+BOOST_BINARY_OPERATOR( left_shiftable, << )
+BOOST_BINARY_OPERATOR( right_shiftable, >> )
+
+#undef BOOST_BINARY_OPERATOR
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct equivalent2 : B
+{
+  friend bool operator==(const T& x, const U& y)
+  {
+    return !static_cast<bool>(x < y) && !static_cast<bool>(x > y);
+  }
+};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct equivalent1 : B
+{
+  friend bool operator==(const T&x, const T&y)
+  {
+    return !static_cast<bool>(x < y) && !static_cast<bool>(y < x);
+  }
+};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct partially_ordered2 : B
+{
+  friend bool operator<=(const T& x, const U& y)
+    { return static_cast<bool>(x < y) || static_cast<bool>(x == y); }
+  friend bool operator>=(const T& x, const U& y)
+    { return static_cast<bool>(x > y) || static_cast<bool>(x == y); }
+  friend bool operator>(const U& x, const T& y)
+    { return y < x; }
+  friend bool operator<(const U& x, const T& y)
+    { return y > x; }
+  friend bool operator<=(const U& x, const T& y)
+    { return static_cast<bool>(y > x) || static_cast<bool>(y == x); }
+  friend bool operator>=(const U& x, const T& y)
+    { return static_cast<bool>(y < x) || static_cast<bool>(y == x); }
+};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct partially_ordered1 : B
+{
+  friend bool operator>(const T& x, const T& y)
+    { return y < x; }
+  friend bool operator<=(const T& x, const T& y)
+    { return static_cast<bool>(x < y) || static_cast<bool>(x == y); }
+  friend bool operator>=(const T& x, const T& y)
+    { return static_cast<bool>(y < x) || static_cast<bool>(x == y); }
+};
+
+//  Combined operator classes (contributed by Daryle Walker) ----------------//
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct totally_ordered2
+    : less_than_comparable2<T, U
+    , equality_comparable2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct totally_ordered1
+    : less_than_comparable1<T
+    , equality_comparable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct additive2
+    : addable2<T, U
+    , subtractable2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct additive1
+    : addable1<T
+    , subtractable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct multiplicative2
+    : multipliable2<T, U
+    , dividable2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct multiplicative1
+    : multipliable1<T
+    , dividable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct integer_multiplicative2
+    : multiplicative2<T, U
+    , modable2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct integer_multiplicative1
+    : multiplicative1<T
+    , modable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct arithmetic2
+    : additive2<T, U
+    , multiplicative2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct arithmetic1
+    : additive1<T
+    , multiplicative1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct integer_arithmetic2
+    : additive2<T, U
+    , integer_multiplicative2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct integer_arithmetic1
+    : additive1<T
+    , integer_multiplicative1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct bitwise2
+    : xorable2<T, U
+    , andable2<T, U
+    , orable2<T, U, B
+      > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct bitwise1
+    : xorable1<T
+    , andable1<T
+    , orable1<T, B
+      > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct unit_steppable
+    : incrementable<T
+    , decrementable<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct shiftable2
+    : left_shiftable2<T, U
+    , right_shiftable2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct shiftable1
+    : left_shiftable1<T
+    , right_shiftable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct ring_operators2
+    : additive2<T, U
+    , subtractable2_left<T, U
+    , multipliable2<T, U, B
+      > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct ring_operators1
+    : additive1<T
+    , multipliable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct ordered_ring_operators2
+    : ring_operators2<T, U
+    , totally_ordered2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct ordered_ring_operators1
+    : ring_operators1<T
+    , totally_ordered1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct field_operators2
+    : ring_operators2<T, U
+    , dividable2<T, U
+    , dividable2_left<T, U, B
+      > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct field_operators1
+    : ring_operators1<T
+    , dividable1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct ordered_field_operators2
+    : field_operators2<T, U
+    , totally_ordered2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct ordered_field_operators1
+    : field_operators1<T
+    , totally_ordered1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct euclidian_ring_operators2
+    : ring_operators2<T, U
+    , dividable2<T, U
+    , dividable2_left<T, U
+    , modable2<T, U
+    , modable2_left<T, U, B
+      > > > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct euclidian_ring_operators1
+    : ring_operators1<T
+    , dividable1<T
+    , modable1<T, B
+      > > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct ordered_euclidian_ring_operators2
+    : totally_ordered2<T, U
+    , euclidian_ring_operators2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct ordered_euclidian_ring_operators1
+    : totally_ordered1<T
+    , euclidian_ring_operators1<T, B
+      > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct euclidean_ring_operators2
+    : ring_operators2<T, U
+    , dividable2<T, U
+    , dividable2_left<T, U
+    , modable2<T, U
+    , modable2_left<T, U, B
+      > > > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct euclidean_ring_operators1
+    : ring_operators1<T
+    , dividable1<T
+    , modable1<T, B
+      > > > {};
+
+template <class T, class U, class B = ::boost::detail::empty_base<T> >
+struct ordered_euclidean_ring_operators2
+    : totally_ordered2<T, U
+    , euclidean_ring_operators2<T, U, B
+      > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct ordered_euclidean_ring_operators1
+    : totally_ordered1<T
+    , euclidean_ring_operators1<T, B
+      > > {};
+
+template <class T, class P, class B = ::boost::detail::empty_base<T> >
+struct input_iteratable
+    : equality_comparable1<T
+    , incrementable<T
+    , dereferenceable<T, P, B
+      > > > {};
+
+template <class T, class B = ::boost::detail::empty_base<T> >
+struct output_iteratable
+    : incrementable<T, B
+      > {};
+
+template <class T, class P, class B = ::boost::detail::empty_base<T> >
+struct forward_iteratable
+    : input_iteratable<T, P, B
+      > {};
+
+template <class T, class P, class B = ::boost::detail::empty_base<T> >
+struct bidirectional_iteratable
+    : forward_iteratable<T, P
+    , decrementable<T, B
+      > > {};
+
+//  To avoid repeated derivation from equality_comparable,
+//  which is an indirect base class of bidirectional_iterable,
+//  random_access_iteratable must not be derived from totally_ordered1
+//  but from less_than_comparable1 only. (Helmut Zeisel, 02-Dec-2001)
+template <class T, class P, class D, class R, class B = ::boost::detail::empty_base<T> >
+struct random_access_iteratable
+    : bidirectional_iteratable<T, P
+    , less_than_comparable1<T
+    , additive2<T, D
+    , indexable<T, D, R, B
+      > > > > {};
+
+#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE
+} // namespace boost
+#endif // BOOST_NO_OPERATORS_IN_NAMESPACE
+
+
+// BOOST_IMPORT_TEMPLATE1 .. BOOST_IMPORT_TEMPLATE4 -
+//
+// When BOOST_NO_OPERATORS_IN_NAMESPACE is defined we need a way to import an
+// operator template into the boost namespace. BOOST_IMPORT_TEMPLATE1 is used
+// for one-argument forms of operator templates; BOOST_IMPORT_TEMPLATE2 for
+// two-argument forms. Note that these macros expect to be invoked from within
+// boost.
+
+#ifndef BOOST_NO_OPERATORS_IN_NAMESPACE
+
+  // The template is already in boost so we have nothing to do.
+# define BOOST_IMPORT_TEMPLATE4(template_name)
+# define BOOST_IMPORT_TEMPLATE3(template_name)
+# define BOOST_IMPORT_TEMPLATE2(template_name)
+# define BOOST_IMPORT_TEMPLATE1(template_name)
+
+#else // BOOST_NO_OPERATORS_IN_NAMESPACE
+
+#  ifndef BOOST_NO_USING_TEMPLATE
+
+     // Bring the names in with a using-declaration
+     // to avoid stressing the compiler.
+#    define BOOST_IMPORT_TEMPLATE4(template_name) using ::template_name;
+#    define BOOST_IMPORT_TEMPLATE3(template_name) using ::template_name;
+#    define BOOST_IMPORT_TEMPLATE2(template_name) using ::template_name;
+#    define BOOST_IMPORT_TEMPLATE1(template_name) using ::template_name;
+
+#  else
+
+     // Otherwise, because a Borland C++ 5.5 bug prevents a using declaration
+     // from working, we are forced to use inheritance for that compiler.
+#    define BOOST_IMPORT_TEMPLATE4(template_name)                                             \
+     template <class T, class U, class V, class W, class B = ::boost::detail::empty_base<T> > \
+     struct template_name : ::template_name<T, U, V, W, B> {};
+
+#    define BOOST_IMPORT_TEMPLATE3(template_name)                                    \
+     template <class T, class U, class V, class B = ::boost::detail::empty_base<T> > \
+     struct template_name : ::template_name<T, U, V, B> {};
+
+#    define BOOST_IMPORT_TEMPLATE2(template_name)                           \
+     template <class T, class U, class B = ::boost::detail::empty_base<T> > \
+     struct template_name : ::template_name<T, U, B> {};
+
+#    define BOOST_IMPORT_TEMPLATE1(template_name)                  \
+     template <class T, class B = ::boost::detail::empty_base<T> > \
+     struct template_name : ::template_name<T, B> {};
+
+#  endif // BOOST_NO_USING_TEMPLATE
+
+#endif // BOOST_NO_OPERATORS_IN_NAMESPACE
+
+//
+// Here's where we put it all together, defining the xxxx forms of the templates
+// in namespace boost. We also define specializations of is_chained_base<> for
+// the xxxx, xxxx1, and xxxx2 templates, importing them into boost:: as
+// necessary.
+//
+
+// is_chained_base<> - a traits class used to distinguish whether an operator
+// template argument is being used for base class chaining, or is specifying a
+// 2nd argument type.
+
+namespace boost {
+// A type parameter is used instead of a plain bool because Borland's compiler
+// didn't cope well with the more obvious non-type template parameter.
+namespace detail {
+  struct true_t {};
+  struct false_t {};
+} // namespace detail
+
+// Unspecialized version assumes that most types are not being used for base
+// class chaining. We specialize for the operator templates defined in this
+// library.
+template<class T> struct is_chained_base {
+  typedef ::boost::detail::false_t value;
+};
+
+} // namespace boost
+
+// Import a 4-type-argument operator template into boost (if necessary) and
+// provide a specialization of 'is_chained_base<>' for it.
+# define BOOST_OPERATOR_TEMPLATE4(template_name4)                     \
+  BOOST_IMPORT_TEMPLATE4(template_name4)                              \
+  template<class T, class U, class V, class W, class B>               \
+  struct is_chained_base< ::boost::template_name4<T, U, V, W, B> > {  \
+    typedef ::boost::detail::true_t value;                            \
+  };
+
+// Import a 3-type-argument operator template into boost (if necessary) and
+// provide a specialization of 'is_chained_base<>' for it.
+# define BOOST_OPERATOR_TEMPLATE3(template_name3)                     \
+  BOOST_IMPORT_TEMPLATE3(template_name3)                              \
+  template<class T, class U, class V, class B>                        \
+  struct is_chained_base< ::boost::template_name3<T, U, V, B> > {     \
+    typedef ::boost::detail::true_t value;                            \
+  };
+
+// Import a 2-type-argument operator template into boost (if necessary) and
+// provide a specialization of 'is_chained_base<>' for it.
+# define BOOST_OPERATOR_TEMPLATE2(template_name2)                  \
+  BOOST_IMPORT_TEMPLATE2(template_name2)                           \
+  template<class T, class U, class B>                              \
+  struct is_chained_base< ::boost::template_name2<T, U, B> > {     \
+    typedef ::boost::detail::true_t value;                         \
+  };
+
+// Import a 1-type-argument operator template into boost (if necessary) and
+// provide a specialization of 'is_chained_base<>' for it.
+# define BOOST_OPERATOR_TEMPLATE1(template_name1)                  \
+  BOOST_IMPORT_TEMPLATE1(template_name1)                           \
+  template<class T, class B>                                       \
+  struct is_chained_base< ::boost::template_name1<T, B> > {        \
+    typedef ::boost::detail::true_t value;                         \
+  };
+
+// BOOST_OPERATOR_TEMPLATE(template_name) defines template_name<> such that it
+// can be used for specifying both 1-argument and 2-argument forms. Requires the
+// existence of two previously defined class templates named '<template_name>1'
+// and '<template_name>2' which must implement the corresponding 1- and 2-
+// argument forms.
+//
+// The template type parameter O == is_chained_base<U>::value is used to
+// distinguish whether the 2nd argument to <template_name> is being used for
+// base class chaining from another boost operator template or is describing a
+// 2nd operand type. O == true_t only when U is actually an another operator
+// template from the library. Partial specialization is used to select an
+// implementation in terms of either '<template_name>1' or '<template_name>2'.
+//
+
+# define BOOST_OPERATOR_TEMPLATE(template_name)                    \
+template <class T                                                  \
+         ,class U = T                                              \
+         ,class B = ::boost::detail::empty_base<T>                 \
+         ,class O = typename is_chained_base<U>::value             \
+         >                                                         \
+struct template_name : template_name##2<T, U, B> {};               \
+                                                                   \
+template<class T, class U, class B>                                \
+struct template_name<T, U, B, ::boost::detail::true_t>             \
+  : template_name##1<T, U> {};                                     \
+                                                                   \
+template <class T, class B>                                        \
+struct template_name<T, T, B, ::boost::detail::false_t>            \
+  : template_name##1<T, B> {};                                     \
+                                                                   \
+template<class T, class U, class B, class O>                       \
+struct is_chained_base< ::boost::template_name<T, U, B, O> > {     \
+  typedef ::boost::detail::true_t value;                           \
+};                                                                 \
+                                                                   \
+BOOST_OPERATOR_TEMPLATE2(template_name##2)                         \
+BOOST_OPERATOR_TEMPLATE1(template_name##1)
+
+
+
+namespace boost {
+    
+BOOST_OPERATOR_TEMPLATE(less_than_comparable)
+BOOST_OPERATOR_TEMPLATE(equality_comparable)
+BOOST_OPERATOR_TEMPLATE(multipliable)
+BOOST_OPERATOR_TEMPLATE(addable)
+BOOST_OPERATOR_TEMPLATE(subtractable)
+BOOST_OPERATOR_TEMPLATE2(subtractable2_left)
+BOOST_OPERATOR_TEMPLATE(dividable)
+BOOST_OPERATOR_TEMPLATE2(dividable2_left)
+BOOST_OPERATOR_TEMPLATE(modable)
+BOOST_OPERATOR_TEMPLATE2(modable2_left)
+BOOST_OPERATOR_TEMPLATE(xorable)
+BOOST_OPERATOR_TEMPLATE(andable)
+BOOST_OPERATOR_TEMPLATE(orable)
+
+BOOST_OPERATOR_TEMPLATE1(incrementable)
+BOOST_OPERATOR_TEMPLATE1(decrementable)
+
+BOOST_OPERATOR_TEMPLATE2(dereferenceable)
+BOOST_OPERATOR_TEMPLATE3(indexable)
+
+BOOST_OPERATOR_TEMPLATE(left_shiftable)
+BOOST_OPERATOR_TEMPLATE(right_shiftable)
+BOOST_OPERATOR_TEMPLATE(equivalent)
+BOOST_OPERATOR_TEMPLATE(partially_ordered)
+
+BOOST_OPERATOR_TEMPLATE(totally_ordered)
+BOOST_OPERATOR_TEMPLATE(additive)
+BOOST_OPERATOR_TEMPLATE(multiplicative)
+BOOST_OPERATOR_TEMPLATE(integer_multiplicative)
+BOOST_OPERATOR_TEMPLATE(arithmetic)
+BOOST_OPERATOR_TEMPLATE(integer_arithmetic)
+BOOST_OPERATOR_TEMPLATE(bitwise)
+BOOST_OPERATOR_TEMPLATE1(unit_steppable)
+BOOST_OPERATOR_TEMPLATE(shiftable)
+BOOST_OPERATOR_TEMPLATE(ring_operators)
+BOOST_OPERATOR_TEMPLATE(ordered_ring_operators)
+BOOST_OPERATOR_TEMPLATE(field_operators)
+BOOST_OPERATOR_TEMPLATE(ordered_field_operators)
+BOOST_OPERATOR_TEMPLATE(euclidian_ring_operators)
+BOOST_OPERATOR_TEMPLATE(ordered_euclidian_ring_operators)
+BOOST_OPERATOR_TEMPLATE(euclidean_ring_operators)
+BOOST_OPERATOR_TEMPLATE(ordered_euclidean_ring_operators)
+BOOST_OPERATOR_TEMPLATE2(input_iteratable)
+BOOST_OPERATOR_TEMPLATE1(output_iteratable)
+BOOST_OPERATOR_TEMPLATE2(forward_iteratable)
+BOOST_OPERATOR_TEMPLATE2(bidirectional_iteratable)
+BOOST_OPERATOR_TEMPLATE4(random_access_iteratable)
+
+#undef BOOST_OPERATOR_TEMPLATE
+#undef BOOST_OPERATOR_TEMPLATE4
+#undef BOOST_OPERATOR_TEMPLATE3
+#undef BOOST_OPERATOR_TEMPLATE2
+#undef BOOST_OPERATOR_TEMPLATE1
+#undef BOOST_IMPORT_TEMPLATE1
+#undef BOOST_IMPORT_TEMPLATE2
+#undef BOOST_IMPORT_TEMPLATE3
+#undef BOOST_IMPORT_TEMPLATE4
+
+// The following 'operators' classes can only be used portably if the derived class
+// declares ALL of the required member operators.
+template <class T, class U>
+struct operators2
+    : totally_ordered2<T,U
+    , integer_arithmetic2<T,U
+    , bitwise2<T,U
+      > > > {};
+
+template <class T, class U = T>
+struct operators : operators2<T, U> {};
+
+template <class T> struct operators<T, T>
+    : totally_ordered<T
+    , integer_arithmetic<T
+    , bitwise<T
+    , unit_steppable<T
+      > > > > {};
+
+//  Iterator helper classes (contributed by Jeremy Siek) -------------------//
+//  (Input and output iterator helpers contributed by Daryle Walker) -------//
+//  (Changed to use combined operator classes by Daryle Walker) ------------//
+template <class T,
+          class V,
+          class D = std::ptrdiff_t,
+          class P = V const *,
+          class R = V const &>
+struct input_iterator_helper
+  : input_iteratable<T, P
+  , std::iterator<std::input_iterator_tag, V, D, P, R
+    > > {};
+
+template<class T>
+struct output_iterator_helper
+  : output_iteratable<T
+  , std::iterator<std::output_iterator_tag, void, void, void, void
+  > >
+{
+  T& operator*()  { return static_cast<T&>(*this); }
+  T& operator++() { return static_cast<T&>(*this); }
+};
+
+template <class T,
+          class V,
+          class D = std::ptrdiff_t,
+          class P = V*,
+          class R = V&>
+struct forward_iterator_helper
+  : forward_iteratable<T, P
+  , std::iterator<std::forward_iterator_tag, V, D, P, R
+    > > {};
+
+template <class T,
+          class V,
+          class D = std::ptrdiff_t,
+          class P = V*,
+          class R = V&>
+struct bidirectional_iterator_helper
+  : bidirectional_iteratable<T, P
+  , std::iterator<std::bidirectional_iterator_tag, V, D, P, R
+    > > {};
+
+template <class T,
+          class V, 
+          class D = std::ptrdiff_t,
+          class P = V*,
+          class R = V&>
+struct random_access_iterator_helper
+  : random_access_iteratable<T, P, D, R
+  , std::iterator<std::random_access_iterator_tag, V, D, P, R
+    > >
+{
+  friend D requires_difference_operator(const T& x, const T& y) {
+    return x - y;
+  }
+}; // random_access_iterator_helper
+
+} // namespace boost
+
+#if defined(__sgi) && !defined(__GNUC__)
+#pragma reset woff 1234
+#endif
+
+#endif // BOOST_OPERATORS_V1_HPP

include/boost/utility.hpp

@@ -1,69 +1,24 @@
-//  boost utility.hpp header file  -------------------------------------------//
+//  Boost utility.hpp header file  -------------------------------------------//
 
-//  (C) Copyright boost.org 1999. Permission to copy, use, modify, sell
-//  and distribute this software is granted provided this copyright
-//  notice appears in all copies. This software is provided "as is" without
-//  express or implied warranty, and with no claim as to its suitability for
-//  any purpose.
+//  Copyright 1999-2003 Aleksey Gurtovoy.  Use, modification, and distribution are
+//  subject to the Boost Software License, Version 1.0.  (See accompanying file
+//  LICENSE_1_0.txt or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
 
-//  See http://www.boost.org for most recent version including documentation.
-
-//  Classes appear in alphabetical order
-
-//  Revision History
-//  26 Jan 00  protected noncopyable destructor added (Miki Jovanovic)
-//  10 Dec 99  next() and prior() templates added (Dave Abrahams)
-//  30 Aug 99  moved cast templates to cast.hpp (Beman Dawes)
-//   3 Aug 99  cast templates added
-//  20 Jul 99  name changed to utility.hpp 
-//   9 Jun 99  protected noncopyable default ctor
-//   2 Jun 99  Initial Version. Class noncopyable only contents (Dave Abrahams)
+//  See <http://www.boost.org/libs/utility/> for the library's home page.
 
 #ifndef BOOST_UTILITY_HPP
 #define BOOST_UTILITY_HPP
 
-#include <boost/config.hpp>
-#include <cstddef>            // for size_t
+// Use of this header is discouraged and it will be deprecated.
+// Please include one or more of the headers below instead.
 
-namespace boost
-{
+#include <boost/utility/base_from_member.hpp>
+#include <boost/utility/binary.hpp>
+#include <boost/utility/identity_type.hpp>
 
-//  next() and prior() template functions  -----------------------------------//
-
-    //  Helper functions for classes like bidirectional iterators not supporting
-    //  operator+ and operator-.
-    //
-    //  Usage:
-    //    const std::list<T>::iterator p = get_some_iterator();
-    //    const std::list<T>::iterator prev = boost::prior(p);
-
-    //  Contributed by Dave Abrahams
-
-    template <class T>
-    T next(T x) { return ++x; }
-
-    template <class T>
-    T prior(T x) { return --x; }
-
-
-//  class noncopyable  -------------------------------------------------------//
-
-    //  Private copy constructor and copy assignment ensure classes derived from
-    //  class noncopyable cannot be copied.
-
-    //  Contributed by Dave Abrahams
-
-    class noncopyable
-    {
-    protected:
-        noncopyable(){}
-        ~noncopyable(){}
-    private:  // emphasize the following members are private
-        noncopyable( const noncopyable& );
-        const noncopyable& operator=( const noncopyable& );
-    }; // noncopyable
-
-} // namespace boost
+#include <boost/core/addressof.hpp>
+#include <boost/core/enable_if.hpp>
+#include <boost/core/checked_delete.hpp>
+#include <boost/core/noncopyable.hpp>
 
 #endif  // BOOST_UTILITY_HPP
-

include/boost/utility/base_from_member.hpp

@@ -0,0 +1,173 @@
+//  boost utility/base_from_member.hpp header file  --------------------------//
+
+//  Copyright 2001, 2003, 2004, 2012 Daryle Walker.  Use, modification, and
+//  distribution are subject to the Boost Software License, Version 1.0.  (See
+//  accompanying file LICENSE_1_0.txt or a copy at
+//  <http://www.boost.org/LICENSE_1_0.txt>.)
+
+//  See <http://www.boost.org/libs/utility/> for the library's home page.
+
+#ifndef BOOST_UTILITY_BASE_FROM_MEMBER_HPP
+#define BOOST_UTILITY_BASE_FROM_MEMBER_HPP
+
+#include <boost/config.hpp>
+#include <boost/preprocessor/arithmetic/inc.hpp>
+#include <boost/preprocessor/repetition/enum_binary_params.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/preprocessor/repetition/repeat_from_to.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/utility/enable_if.hpp>
+
+
+//  Base-from-member arity configuration macro  ------------------------------//
+
+// The following macro determines how many arguments will be in the largest
+// constructor template of base_from_member.  Constructor templates will be
+// generated from one argument to this maximum.  Code from other files can read
+// this number if they need to always match the exact maximum base_from_member
+// uses.  The maximum constructor length can be changed by overriding the
+// #defined constant.  Make sure to apply the override, if any, for all source
+// files during project compiling for consistency.
+
+// Contributed by Jonathan Turkanis
+
+#ifndef BOOST_BASE_FROM_MEMBER_MAX_ARITY
+#define BOOST_BASE_FROM_MEMBER_MAX_ARITY  10
+#endif
+
+
+//  An iteration of a constructor template for base_from_member  -------------//
+
+// A macro that should expand to:
+//     template < typename T1, ..., typename Tn >
+//     base_from_member( T1 x1, ..., Tn xn )
+//         : member( x1, ..., xn )
+//         {}
+// This macro should only persist within this file.
+
+#ifndef BOOST_UTILITY_DOCS
+#define BOOST_PRIVATE_CTR_DEF( z, n, data )                   \
+    template < BOOST_PP_ENUM_PARAMS(n, typename T) >          \
+    base_from_member( BOOST_PP_ENUM_BINARY_PARAMS(n, T, x) )  \
+        : member( BOOST_PP_ENUM_PARAMS(n, x) )                \
+        {}                                                    \
+    /**/
+#endif // BOOST_UTILITY_DOCS
+
+namespace boost
+{
+
+namespace detail
+{
+
+//  Type-unmarking class template  -------------------------------------------//
+
+// Type-trait to get the raw type, i.e. the type without top-level reference nor
+// cv-qualification, from a type expression.  Mainly for function arguments, any
+// reference part is stripped first.
+
+// Contributed by Daryle Walker
+
+template < typename T >
+struct remove_cv_ref
+{
+    typedef typename ::boost::remove_cv<typename
+     ::boost::remove_reference<T>::type>::type  type;
+
+};  // boost::detail::remove_cv_ref
+
+//  Unmarked-type comparison class template  ---------------------------------//
+
+// Type-trait to check if two type expressions have the same raw type.
+
+// Contributed by Daryle Walker, based on a work-around by Luc Danton
+
+template < typename T, typename U >
+struct is_related
+    : public ::boost::is_same<
+     typename ::boost::detail::remove_cv_ref<T>::type,
+     typename ::boost::detail::remove_cv_ref<U>::type >
+{};
+
+//  Enable-if-on-unidentical-unmarked-type class template  -------------------//
+
+// Enable-if on the first two type expressions NOT having the same raw type.
+
+// Contributed by Daryle Walker, based on a work-around by Luc Danton
+
+#ifndef BOOST_NO_CXX11_VARIADIC_TEMPLATES
+template<typename ...T>
+struct enable_if_unrelated
+    : public ::boost::enable_if_c<true>
+{};
+
+template<typename T, typename U, typename ...U2>
+struct enable_if_unrelated<T, U, U2...>
+    : public ::boost::disable_if< ::boost::detail::is_related<T, U> >
+{};
+#endif
+
+}  // namespace boost::detail
+
+
+//  Base-from-member class template  -----------------------------------------//
+
+// Helper to initialize a base object so a derived class can use this
+// object in the initialization of another base class.  Used by
+// Dietmar Kuehl from ideas by Ron Klatcho to solve the problem of a
+// base class needing to be initialized by a member.
+
+// Contributed by Daryle Walker
+
+template < typename MemberType, int UniqueID = 0 >
+class base_from_member
+{
+protected:
+    MemberType  member;
+
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && \
+    !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && \
+    !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS) && \
+    !(defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 4))
+    template <typename ...T, typename EnableIf = typename
+     ::boost::detail::enable_if_unrelated<base_from_member, T...>::type>
+    explicit BOOST_CONSTEXPR base_from_member( T&& ...x )
+        BOOST_NOEXCEPT_IF( BOOST_NOEXCEPT_EXPR(::new ((void*) 0) MemberType(
+         static_cast<T&&>(x)... )) )  // no std::is_nothrow_constructible...
+        : member( static_cast<T&&>(x)... )     // ...nor std::forward needed
+        {}
+#else
+    base_from_member()
+        : member()
+        {}
+
+    template < typename T0 > explicit base_from_member( T0 x0 ) : member( x0 ) {}
+    BOOST_PP_REPEAT_FROM_TO( 2, BOOST_PP_INC(BOOST_BASE_FROM_MEMBER_MAX_ARITY),
+     BOOST_PRIVATE_CTR_DEF, _ )
+#endif
+
+};  // boost::base_from_member
+
+template < typename MemberType, int UniqueID >
+class base_from_member<MemberType&, UniqueID>
+{
+protected:
+    MemberType& member;
+
+    explicit BOOST_CONSTEXPR base_from_member( MemberType& x )
+        BOOST_NOEXCEPT
+        : member( x )
+        {}
+
+};  // boost::base_from_member
+
+}  // namespace boost
+
+
+// Undo any private macros
+#undef BOOST_PRIVATE_CTR_DEF
+
+
+#endif  // BOOST_UTILITY_BASE_FROM_MEMBER_HPP

include/boost/utility/binary.hpp

@@ -0,0 +1,709 @@
+/*=============================================================================
+    Copyright (c) 2005 Matthew Calabrese
+
+    Use, modification and distribution is subject to the Boost Software
+    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+    http://www.boost.org/LICENSE_1_0.txt)
+==============================================================================*/
+
+#ifndef BOOST_UTILITY_BINARY_HPP
+#define BOOST_UTILITY_BINARY_HPP
+
+/*=============================================================================
+
+    Binary Literal Utility
+    ______________________
+
+
+    The following code works by converting the input bit pattern into a
+    Boost.Preprocessor sequence, then converting groupings of 3 bits each into
+    the corresponding octal digit, and finally concatenating all of the digits
+    together along with a leading zero. This yields a standard octal literal
+    with the desired value as specified in bits.
+
+==============================================================================*/
+
+#include <boost/preprocessor/control/deduce_d.hpp>
+#include <boost/preprocessor/facilities/identity.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/seq/cat.hpp>
+#include <boost/preprocessor/seq/transform.hpp>
+#include <boost/preprocessor/arithmetic/mod.hpp>
+#include <boost/preprocessor/seq/size.hpp>
+#include <boost/preprocessor/facilities/empty.hpp>
+#include <boost/preprocessor/control/while.hpp>
+
+#define BOOST_BINARY( bit_groupings )                                          \
+  BOOST_BINARY_LITERAL_D( BOOST_PP_DEDUCE_D(), bit_groupings ) 
+
+#define BOOST_BINARY_U( bit_groupings )                                        \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, U ) 
+
+#define BOOST_BINARY_L( bit_groupings )                                        \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, L ) 
+
+#define BOOST_BINARY_UL( bit_groupings )                                       \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, UL ) 
+
+#define BOOST_BINARY_LU( bit_groupings )                                       \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, LU ) 
+
+#define BOOST_BINARY_LL( bit_groupings )                                       \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, LL ) 
+
+#define BOOST_BINARY_ULL( bit_groupings )                                      \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, ULL ) 
+
+#define BOOST_BINARY_LLU( bit_groupings )                                      \
+  BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, LLU ) 
+
+#define BOOST_SUFFIXED_BINARY_LITERAL( bit_groupings, suffix )                 \
+  BOOST_SUFFIXED_BINARY_LITERAL_D( BOOST_PP_DEDUCE_D(), bit_groupings, suffix ) 
+
+#define BOOST_SUFFIXED_BINARY_LITERAL_D( d, bit_groupings, suffix )            \
+  BOOST_PP_CAT( BOOST_BINARY_LITERAL_D( d, bit_groupings ), suffix ) 
+
+#define BOOST_BINARY_LITERAL_D( d, bit_groupings )                             \
+  BOOST_PP_SEQ_CAT                                                             \
+  ( (0) BOOST_DETAIL_CREATE_BINARY_LITERAL_OCTAL_SEQUENCE( d, bit_groupings )  \
+  ) 
+
+#ifndef BOOST_UTILITY_DOCS
+#define BOOST_DETAIL_CREATE_BINARY_LITERAL_OCTAL_SEQUENCE( d, bit_groupings )  \
+  BOOST_PP_SEQ_TRANSFORM                                                       \
+  ( BOOST_DETAIL_TRIPLE_TO_OCTAL_OPERATION                                     \
+  , BOOST_PP_NIL                                                               \
+  , BOOST_PP_IDENTITY( BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_TRIPLE_SEQUENCE )()\
+    ( BOOST_DETAIL_COMPLETE_TRIPLE_SEQUENCE                                    \
+      (                                                                        \
+        d                                                                      \
+      , BOOST_DETAIL_CREATE_BINARY_LITERAL_BIT_SEQUENCE( d, bit_groupings )    \
+      )                                                                        \
+    )                                                                          \
+  ) 
+
+#define BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_TRIPLE_SEQUENCE( bit_sequence )   \
+  BOOST_PP_CAT                                                                 \
+  ( BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_1 bit_sequence      \
+  , END_BIT                                                                    \
+  ) 
+
+#define BOOST_DETAIL_BITS_PER_OCTIT 3
+
+#define BOOST_DETAIL_COMPLETE_TRIPLE_SEQUENCE( d, incomplete_nibble_sequence ) \
+  BOOST_PP_CAT                                                                 \
+  ( BOOST_DETAIL_CREATE_TRIPLE_COMPLETION_SEQUENCE_                            \
+  , BOOST_PP_MOD_D( d                                                          \
+                  , BOOST_PP_SEQ_SIZE( incomplete_nibble_sequence )            \
+                  , BOOST_DETAIL_BITS_PER_OCTIT                                \
+                  )                                                            \
+  )                                                                            \
+  incomplete_nibble_sequence 
+
+#define BOOST_DETAIL_FIXED_COMPL( bit )                                        \
+  BOOST_PP_CAT( BOOST_DETAIL_FIXED_COMPL_, bit )
+
+#define BOOST_DETAIL_FIXED_COMPL_0 1 
+
+#define BOOST_DETAIL_FIXED_COMPL_1 0 
+
+#define BOOST_DETAIL_CREATE_BINARY_LITERAL_BIT_SEQUENCE( d, bit_groupings )    \
+  BOOST_PP_EMPTY                                                               \
+  BOOST_PP_CAT( BOOST_PP_WHILE_, d )                                           \
+  ( BOOST_DETAIL_BINARY_LITERAL_PREDICATE                                      \
+  , BOOST_DETAIL_BINARY_LITERAL_OPERATION                                      \
+  , bit_groupings ()                                                           \
+  ) 
+
+#define BOOST_DETAIL_BINARY_LITERAL_PREDICATE( d, state )                      \
+  BOOST_DETAIL_FIXED_COMPL( BOOST_DETAIL_IS_NULLARY_ARGS( state ) ) 
+
+#define BOOST_DETAIL_BINARY_LITERAL_OPERATION( d, state )                      \
+  BOOST_DETAIL_SPLIT_AND_SWAP                                                  \
+  ( BOOST_PP_CAT( BOOST_DETAIL_BINARY_LITERAL_ELEMENT_, state ) ) 
+
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_OPERATION( s, dummy_param, tuple )        \
+  BOOST_DETAIL_TERNARY_TRIPLE_TO_OCTAL tuple 
+
+#define BOOST_DETAIL_TERNARY_TRIPLE_TO_OCTAL( bit2, bit1, bit0 )               \
+  BOOST_DETAIL_TRIPLE_TO_OCTAL_ ## bit2 ## bit1 ## bit0 
+
+#define BOOST_DETAIL_CREATE_TRIPLE_COMPLETION_SEQUENCE_1 (0)(0)
+#define BOOST_DETAIL_CREATE_TRIPLE_COMPLETION_SEQUENCE_2 (0)
+#define BOOST_DETAIL_CREATE_TRIPLE_COMPLETION_SEQUENCE_0  
+
+#define BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_1END_BIT  
+
+#define BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_1( bit )        \
+  ( ( bit, BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_2 
+
+#define BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_2( bit )        \
+  bit, BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_3 
+
+#define BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_3( bit )        \
+  bit ) ) BOOST_DETAIL_CONVERT_BIT_SEQUENCE_TO_PARENTHETIC_TUPLE_1 
+
+#define BOOST_DETAIL_SPLIT_AND_SWAP( params )                                  \
+  BOOST_PP_IDENTITY( BOOST_DETAIL_SPLIT_AND_SWAP_PARAMS )()( params )
+
+#define BOOST_DETAIL_SPLIT_AND_SWAP_PARAMS( first_param, second_param )        \
+  second_param first_param 
+
+#define BOOST_DETAIL_LEFT_OF_COMMA( params )                                   \
+  BOOST_PP_IDENTITY( BOOST_DETAIL_FIRST_MACRO_PARAM )()( params ) 
+
+#define BOOST_DETAIL_FIRST_MACRO_PARAM( first_param, second_param )            \
+  first_param 
+
+/* Begin derived concepts from Chaos by Paul Mensonides */
+
+#define BOOST_DETAIL_IS_NULLARY_ARGS( param )                                  \
+  BOOST_DETAIL_LEFT_OF_COMMA                                                   \
+  ( BOOST_PP_CAT( BOOST_DETAIL_IS_NULLARY_ARGS_R_                              \
+                , BOOST_DETAIL_IS_NULLARY_ARGS_C param                         \
+                )                                                              \
+  ) 
+
+#define BOOST_DETAIL_IS_NULLARY_ARGS_C()                                       \
+  1 
+
+#define BOOST_DETAIL_IS_NULLARY_ARGS_R_1                                       \
+  1, BOOST_PP_NIL 
+
+#define BOOST_DETAIL_IS_NULLARY_ARGS_R_BOOST_DETAIL_IS_NULLARY_ARGS_C          \
+  0, BOOST_PP_NIL 
+
+/* End derived concepts from Chaos by Paul Mensonides */
+
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_000 0 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_001 1 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_010 2 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_011 3 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_100 4 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_101 5 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_110 6 
+#define BOOST_DETAIL_TRIPLE_TO_OCTAL_111 7 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0 (0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1 (1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00 (0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01 (0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10 (1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11 (1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00 (0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01 (0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10 (1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11 (1)(1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000 (0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001 (0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010 (0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011 (0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100 (1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101 (1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110 (1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111 (1)(1)(1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000 (0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001 (0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010 (0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011 (0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100 (0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101 (0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110 (0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111 (0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000 (1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001 (1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010 (1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011 (1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100 (1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101 (1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110 (1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111 (1)(1)(1)(1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000 (0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001 (0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010 (0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011 (0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100 (0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101 (0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110 (0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111 (0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000 (0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001 (0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010 (0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011 (0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100 (0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101 (0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110 (0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111 (0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000 (1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001 (1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010 (1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011 (1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100 (1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101 (1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110 (1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111 (1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000 (1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001 (1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010 (1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011 (1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100 (1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101 (1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110 (1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111 (1)(1)(1)(1)(1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000000 (0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000001 (0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000010 (0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000011 (0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000100 (0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000101 (0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000110 (0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_000111 (0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001000 (0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001001 (0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001010 (0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001011 (0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001100 (0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001101 (0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001110 (0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_001111 (0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010000 (0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010001 (0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010010 (0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010011 (0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010100 (0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010101 (0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010110 (0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_010111 (0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011000 (0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011001 (0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011010 (0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011011 (0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011100 (0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011101 (0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011110 (0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_011111 (0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100000 (1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100001 (1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100010 (1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100011 (1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100100 (1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100101 (1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100110 (1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_100111 (1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101000 (1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101001 (1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101010 (1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101011 (1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101100 (1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101101 (1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101110 (1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_101111 (1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110000 (1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110001 (1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110010 (1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110011 (1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110100 (1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110101 (1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110110 (1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_110111 (1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111000 (1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111001 (1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111010 (1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111011 (1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111100 (1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111101 (1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111110 (1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_111111 (1)(1)(1)(1)(1)(1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000000 (0)(0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000001 (0)(0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000010 (0)(0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000011 (0)(0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000100 (0)(0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000101 (0)(0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000110 (0)(0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0000111 (0)(0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001000 (0)(0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001001 (0)(0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001010 (0)(0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001011 (0)(0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001100 (0)(0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001101 (0)(0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001110 (0)(0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0001111 (0)(0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010000 (0)(0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010001 (0)(0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010010 (0)(0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010011 (0)(0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010100 (0)(0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010101 (0)(0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010110 (0)(0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0010111 (0)(0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011000 (0)(0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011001 (0)(0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011010 (0)(0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011011 (0)(0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011100 (0)(0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011101 (0)(0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011110 (0)(0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0011111 (0)(0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100000 (0)(1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100001 (0)(1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100010 (0)(1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100011 (0)(1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100100 (0)(1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100101 (0)(1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100110 (0)(1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0100111 (0)(1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101000 (0)(1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101001 (0)(1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101010 (0)(1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101011 (0)(1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101100 (0)(1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101101 (0)(1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101110 (0)(1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0101111 (0)(1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110000 (0)(1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110001 (0)(1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110010 (0)(1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110011 (0)(1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110100 (0)(1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110101 (0)(1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110110 (0)(1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0110111 (0)(1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111000 (0)(1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111001 (0)(1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111010 (0)(1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111011 (0)(1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111100 (0)(1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111101 (0)(1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111110 (0)(1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_0111111 (0)(1)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000000 (1)(0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000001 (1)(0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000010 (1)(0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000011 (1)(0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000100 (1)(0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000101 (1)(0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000110 (1)(0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1000111 (1)(0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001000 (1)(0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001001 (1)(0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001010 (1)(0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001011 (1)(0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001100 (1)(0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001101 (1)(0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001110 (1)(0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1001111 (1)(0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010000 (1)(0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010001 (1)(0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010010 (1)(0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010011 (1)(0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010100 (1)(0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010101 (1)(0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010110 (1)(0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1010111 (1)(0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011000 (1)(0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011001 (1)(0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011010 (1)(0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011011 (1)(0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011100 (1)(0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011101 (1)(0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011110 (1)(0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1011111 (1)(0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100000 (1)(1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100001 (1)(1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100010 (1)(1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100011 (1)(1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100100 (1)(1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100101 (1)(1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100110 (1)(1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1100111 (1)(1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101000 (1)(1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101001 (1)(1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101010 (1)(1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101011 (1)(1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101100 (1)(1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101101 (1)(1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101110 (1)(1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1101111 (1)(1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110000 (1)(1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110001 (1)(1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110010 (1)(1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110011 (1)(1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110100 (1)(1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110101 (1)(1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110110 (1)(1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1110111 (1)(1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111000 (1)(1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111001 (1)(1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111010 (1)(1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111011 (1)(1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111100 (1)(1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111101 (1)(1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111110 (1)(1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_1111111 (1)(1)(1)(1)(1)(1)(1), 
+
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000000 (0)(0)(0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000001 (0)(0)(0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000010 (0)(0)(0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000011 (0)(0)(0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000100 (0)(0)(0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000101 (0)(0)(0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000110 (0)(0)(0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00000111 (0)(0)(0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001000 (0)(0)(0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001001 (0)(0)(0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001010 (0)(0)(0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001011 (0)(0)(0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001100 (0)(0)(0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001101 (0)(0)(0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001110 (0)(0)(0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00001111 (0)(0)(0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010000 (0)(0)(0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010001 (0)(0)(0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010010 (0)(0)(0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010011 (0)(0)(0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010100 (0)(0)(0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010101 (0)(0)(0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010110 (0)(0)(0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00010111 (0)(0)(0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011000 (0)(0)(0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011001 (0)(0)(0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011010 (0)(0)(0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011011 (0)(0)(0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011100 (0)(0)(0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011101 (0)(0)(0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011110 (0)(0)(0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00011111 (0)(0)(0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100000 (0)(0)(1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100001 (0)(0)(1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100010 (0)(0)(1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100011 (0)(0)(1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100100 (0)(0)(1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100101 (0)(0)(1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100110 (0)(0)(1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00100111 (0)(0)(1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101000 (0)(0)(1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101001 (0)(0)(1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101010 (0)(0)(1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101011 (0)(0)(1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101100 (0)(0)(1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101101 (0)(0)(1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101110 (0)(0)(1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00101111 (0)(0)(1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110000 (0)(0)(1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110001 (0)(0)(1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110010 (0)(0)(1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110011 (0)(0)(1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110100 (0)(0)(1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110101 (0)(0)(1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110110 (0)(0)(1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00110111 (0)(0)(1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111000 (0)(0)(1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111001 (0)(0)(1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111010 (0)(0)(1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111011 (0)(0)(1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111100 (0)(0)(1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111101 (0)(0)(1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111110 (0)(0)(1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_00111111 (0)(0)(1)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000000 (0)(1)(0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000001 (0)(1)(0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000010 (0)(1)(0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000011 (0)(1)(0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000100 (0)(1)(0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000101 (0)(1)(0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000110 (0)(1)(0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01000111 (0)(1)(0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001000 (0)(1)(0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001001 (0)(1)(0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001010 (0)(1)(0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001011 (0)(1)(0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001100 (0)(1)(0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001101 (0)(1)(0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001110 (0)(1)(0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01001111 (0)(1)(0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010000 (0)(1)(0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010001 (0)(1)(0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010010 (0)(1)(0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010011 (0)(1)(0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010100 (0)(1)(0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010101 (0)(1)(0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010110 (0)(1)(0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01010111 (0)(1)(0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011000 (0)(1)(0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011001 (0)(1)(0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011010 (0)(1)(0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011011 (0)(1)(0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011100 (0)(1)(0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011101 (0)(1)(0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011110 (0)(1)(0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01011111 (0)(1)(0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100000 (0)(1)(1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100001 (0)(1)(1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100010 (0)(1)(1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100011 (0)(1)(1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100100 (0)(1)(1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100101 (0)(1)(1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100110 (0)(1)(1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01100111 (0)(1)(1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101000 (0)(1)(1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101001 (0)(1)(1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101010 (0)(1)(1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101011 (0)(1)(1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101100 (0)(1)(1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101101 (0)(1)(1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101110 (0)(1)(1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01101111 (0)(1)(1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110000 (0)(1)(1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110001 (0)(1)(1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110010 (0)(1)(1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110011 (0)(1)(1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110100 (0)(1)(1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110101 (0)(1)(1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110110 (0)(1)(1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01110111 (0)(1)(1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111000 (0)(1)(1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111001 (0)(1)(1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111010 (0)(1)(1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111011 (0)(1)(1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111100 (0)(1)(1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111101 (0)(1)(1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111110 (0)(1)(1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_01111111 (0)(1)(1)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000000 (1)(0)(0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000001 (1)(0)(0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000010 (1)(0)(0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000011 (1)(0)(0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000100 (1)(0)(0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000101 (1)(0)(0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000110 (1)(0)(0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10000111 (1)(0)(0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001000 (1)(0)(0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001001 (1)(0)(0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001010 (1)(0)(0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001011 (1)(0)(0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001100 (1)(0)(0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001101 (1)(0)(0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001110 (1)(0)(0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10001111 (1)(0)(0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010000 (1)(0)(0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010001 (1)(0)(0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010010 (1)(0)(0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010011 (1)(0)(0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010100 (1)(0)(0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010101 (1)(0)(0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010110 (1)(0)(0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10010111 (1)(0)(0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011000 (1)(0)(0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011001 (1)(0)(0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011010 (1)(0)(0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011011 (1)(0)(0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011100 (1)(0)(0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011101 (1)(0)(0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011110 (1)(0)(0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10011111 (1)(0)(0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100000 (1)(0)(1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100001 (1)(0)(1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100010 (1)(0)(1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100011 (1)(0)(1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100100 (1)(0)(1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100101 (1)(0)(1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100110 (1)(0)(1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10100111 (1)(0)(1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101000 (1)(0)(1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101001 (1)(0)(1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101010 (1)(0)(1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101011 (1)(0)(1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101100 (1)(0)(1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101101 (1)(0)(1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101110 (1)(0)(1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10101111 (1)(0)(1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110000 (1)(0)(1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110001 (1)(0)(1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110010 (1)(0)(1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110011 (1)(0)(1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110100 (1)(0)(1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110101 (1)(0)(1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110110 (1)(0)(1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10110111 (1)(0)(1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111000 (1)(0)(1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111001 (1)(0)(1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111010 (1)(0)(1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111011 (1)(0)(1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111100 (1)(0)(1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111101 (1)(0)(1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111110 (1)(0)(1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_10111111 (1)(0)(1)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000000 (1)(1)(0)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000001 (1)(1)(0)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000010 (1)(1)(0)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000011 (1)(1)(0)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000100 (1)(1)(0)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000101 (1)(1)(0)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000110 (1)(1)(0)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11000111 (1)(1)(0)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001000 (1)(1)(0)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001001 (1)(1)(0)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001010 (1)(1)(0)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001011 (1)(1)(0)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001100 (1)(1)(0)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001101 (1)(1)(0)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001110 (1)(1)(0)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11001111 (1)(1)(0)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010000 (1)(1)(0)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010001 (1)(1)(0)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010010 (1)(1)(0)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010011 (1)(1)(0)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010100 (1)(1)(0)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010101 (1)(1)(0)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010110 (1)(1)(0)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11010111 (1)(1)(0)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011000 (1)(1)(0)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011001 (1)(1)(0)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011010 (1)(1)(0)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011011 (1)(1)(0)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011100 (1)(1)(0)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011101 (1)(1)(0)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011110 (1)(1)(0)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11011111 (1)(1)(0)(1)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100000 (1)(1)(1)(0)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100001 (1)(1)(1)(0)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100010 (1)(1)(1)(0)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100011 (1)(1)(1)(0)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100100 (1)(1)(1)(0)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100101 (1)(1)(1)(0)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100110 (1)(1)(1)(0)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11100111 (1)(1)(1)(0)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101000 (1)(1)(1)(0)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101001 (1)(1)(1)(0)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101010 (1)(1)(1)(0)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101011 (1)(1)(1)(0)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101100 (1)(1)(1)(0)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101101 (1)(1)(1)(0)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101110 (1)(1)(1)(0)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11101111 (1)(1)(1)(0)(1)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110000 (1)(1)(1)(1)(0)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110001 (1)(1)(1)(1)(0)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110010 (1)(1)(1)(1)(0)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110011 (1)(1)(1)(1)(0)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110100 (1)(1)(1)(1)(0)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110101 (1)(1)(1)(1)(0)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110110 (1)(1)(1)(1)(0)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11110111 (1)(1)(1)(1)(0)(1)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111000 (1)(1)(1)(1)(1)(0)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111001 (1)(1)(1)(1)(1)(0)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111010 (1)(1)(1)(1)(1)(0)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111011 (1)(1)(1)(1)(1)(0)(1)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111100 (1)(1)(1)(1)(1)(1)(0)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111101 (1)(1)(1)(1)(1)(1)(0)(1), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111110 (1)(1)(1)(1)(1)(1)(1)(0), 
+#define BOOST_DETAIL_BINARY_LITERAL_ELEMENT_11111111 (1)(1)(1)(1)(1)(1)(1)(1),
+#endif // BOOST_UTILITY_DOCS
+#endif

include/boost/utility/compare_pointees.hpp

@@ -0,0 +1,76 @@
+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  fernando_cacciola@hotmail.com
+//
+#ifndef BOOST_UTILITY_COMPARE_POINTEES_25AGO2003_HPP
+#define BOOST_UTILITY_COMPARE_POINTEES_25AGO2003_HPP
+
+#include<functional>
+
+namespace boost {
+
+// template<class OP> bool equal_pointees(OP const& x, OP const& y);
+// template<class OP> struct equal_pointees_t;
+//
+// Being OP a model of OptionalPointee (either a pointer or an optional):
+//
+// If both x and y have valid pointees, returns the result of (*x == *y)
+// If only one has a valid pointee, returns false.
+// If none have valid pointees, returns true.
+// No-throw
+template<class OptionalPointee>
+inline
+bool equal_pointees ( OptionalPointee const& x, OptionalPointee const& y )
+{
+  return (!x) != (!y) ? false : ( !x ? true : (*x) == (*y) ) ;
+}
+
+template<class OptionalPointee>
+struct equal_pointees_t
+{
+  typedef bool result_type;
+  typedef OptionalPointee first_argument_type;
+  typedef OptionalPointee second_argument_type;
+
+  bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
+    { return equal_pointees(x,y) ; }
+} ;
+
+// template<class OP> bool less_pointees(OP const& x, OP const& y);
+// template<class OP> struct less_pointees_t;
+//
+// Being OP a model of OptionalPointee (either a pointer or an optional):
+//
+// If y has not a valid pointee, returns false.
+// ElseIf x has not a valid pointee, returns true.
+// ElseIf both x and y have valid pointees, returns the result of (*x < *y)
+// No-throw
+template<class OptionalPointee>
+inline
+bool less_pointees ( OptionalPointee const& x, OptionalPointee const& y )
+{
+  return !y ? false : ( !x ? true : (*x) < (*y) ) ;
+}
+
+template<class OptionalPointee>
+struct less_pointees_t
+{
+  typedef bool result_type;
+  typedef OptionalPointee first_argument_type;
+  typedef OptionalPointee second_argument_type;
+
+  bool operator() ( OptionalPointee const& x, OptionalPointee const& y ) const
+    { return less_pointees(x,y) ; }
+} ;
+
+} // namespace boost
+
+#endif
+

include/boost/utility/detail/in_place_factory_prefix.hpp

@@ -0,0 +1,36 @@
+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+// Copyright (C) 2007, Tobias Schwinger.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  fernando_cacciola@hotmail.com
+//
+#ifndef BOOST_UTILITY_DETAIL_INPLACE_FACTORY_PREFIX_04APR2007_HPP
+#define BOOST_UTILITY_DETAIL_INPLACE_FACTORY_PREFIX_04APR2007_HPP
+
+#include <new>
+#include <cstddef>
+#include <boost/config.hpp>
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/punctuation/paren.hpp>
+#include <boost/preprocessor/iteration/iterate.hpp>
+#include <boost/preprocessor/repetition/repeat.hpp>
+#include <boost/preprocessor/repetition/enum.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/preprocessor/repetition/enum_binary_params.hpp>
+#include <boost/preprocessor/repetition/enum_trailing_params.hpp>
+
+#define BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT(z,n,_) BOOST_PP_CAT(m_a,n) BOOST_PP_LPAREN() BOOST_PP_CAT(a,n) BOOST_PP_RPAREN()
+#define BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL(z,n,_) BOOST_PP_CAT(A,n) const& BOOST_PP_CAT(m_a,n);
+
+#define BOOST_MAX_INPLACE_FACTORY_ARITY 10
+
+#undef BOOST_UTILITY_DETAIL_INPLACE_FACTORY_SUFFIX_04APR2007_HPP
+
+#endif
+

include/boost/utility/detail/in_place_factory_suffix.hpp

@@ -0,0 +1,23 @@
+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+// Copyright (C) 2007, Tobias Schwinger.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  fernando_cacciola@hotmail.com
+//
+#ifndef BOOST_UTILITY_DETAIL_INPLACE_FACTORY_SUFFIX_04APR2007_HPP
+#define BOOST_UTILITY_DETAIL_INPLACE_FACTORY_SUFFIX_04APR2007_HPP
+
+#undef BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT
+#undef BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL
+#undef BOOST_MAX_INPLACE_FACTORY_ARITY
+
+#undef BOOST_UTILITY_DETAIL_INPLACE_FACTORY_PREFIX_04APR2007_HPP
+
+#endif
+

include/boost/utility/detail/minstd_rand.hpp

@@ -0,0 +1,16 @@
+#ifndef BOOST_UTILITY_DETAIL_MINSTD_RAND_HPP_INCLUDED
+#define BOOST_UTILITY_DETAIL_MINSTD_RAND_HPP_INCLUDED
+
+// Copyright 2017 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+//
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+// An implementation of minstd_rand that does not require
+// the Random library
+
+#include <boost/core/detail/minstd_rand.hpp>
+
+#endif // #ifndef BOOST_UTILITY_DETAIL_MINSTD_RAND_HPP_INCLUDED

include/boost/utility/detail/result_of_iterate.hpp

@@ -0,0 +1,218 @@
+// Boost result_of library
+
+//  Copyright Douglas Gregor 2004. Use, modification and
+//  distribution is subject to the Boost Software License, Version
+//  1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  Copyright Daniel Walker, Eric Niebler, Michel Morin 2008-2012.
+//  Use, modification and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or
+//  copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// For more information, see http://www.boost.org/libs/utility
+#if !defined(BOOST_PP_IS_ITERATING)
+# error Boost result_of - do not include this file!
+#endif
+
+// CWPro8 requires an argument in a function type specialization
+#if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3002)) && BOOST_PP_ITERATION() == 0
+# define BOOST_RESULT_OF_ARGS void
+#else
+# define BOOST_RESULT_OF_ARGS BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)
+#endif
+
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of<F(BOOST_RESULT_OF_ARGS)>
+    : conditional<
+        is_pointer<F>::value || is_member_function_pointer<F>::value
+        , boost::detail::tr1_result_of_impl<
+            typename remove_cv<F>::type,
+            typename remove_cv<F>::type(BOOST_RESULT_OF_ARGS),
+            (boost::detail::result_of_has_result_type<F>::value)>
+        , boost::detail::tr1_result_of_impl<
+            F,
+            F(BOOST_RESULT_OF_ARGS),
+            (boost::detail::result_of_has_result_type<F>::value)> >::type { };
+#endif
+
+#ifdef BOOST_RESULT_OF_USE_DECLTYPE
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct result_of<F(BOOST_RESULT_OF_ARGS)>
+    : detail::cpp0x_result_of<F(BOOST_RESULT_OF_ARGS)> { };
+#endif // BOOST_RESULT_OF_USE_DECLTYPE
+
+#ifdef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct result_of<F(BOOST_RESULT_OF_ARGS)>
+    : conditional<detail::result_of_has_result_type<F>::value || detail::result_of_has_result<F>::value,
+               tr1_result_of<F(BOOST_RESULT_OF_ARGS)>,
+               detail::cpp0x_result_of<F(BOOST_RESULT_OF_ARGS)> >::type { };
+#endif // BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
+
+#if defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)
+
+namespace detail {
+
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct cpp0x_result_of<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))>
+    : conditional<
+          is_member_function_pointer<F>::value
+        , detail::tr1_result_of_impl<
+            typename remove_cv<F>::type,
+            typename remove_cv<F>::type(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false
+          >
+        , detail::cpp0x_result_of_impl<
+              F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T))
+          >
+      >::type
+{};
+
+#ifdef BOOST_NO_SFINAE_EXPR
+
+template<typename F>
+struct BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION());
+
+template<typename R BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), typename T)>
+struct BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION())<R(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), T))> {
+    R operator()(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(), T)) const;
+    typedef result_of_private_type const &(*pfn_t)(...);
+    operator pfn_t() const volatile;
+};
+
+template<typename F>
+struct BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION())
+  : BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION())<F>
+{};
+
+template<typename F>
+struct BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION())<F *>
+  : BOOST_PP_CAT(result_of_callable_fun_2_, BOOST_PP_ITERATION())<F>
+{};
+
+template<typename F>
+struct BOOST_PP_CAT(result_of_select_call_wrapper_type_, BOOST_PP_ITERATION())
+  : conditional<
+        is_class<typename remove_reference<F>::type>::value,
+        result_of_wrap_callable_class<F>,
+        type_identity<BOOST_PP_CAT(result_of_callable_fun_, BOOST_PP_ITERATION())<typename remove_cv<typename remove_reference<F>::type>::type> >
+    >::type
+{};
+
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), typename T)>
+struct BOOST_PP_CAT(result_of_is_callable_, BOOST_PP_ITERATION()) {
+    typedef typename BOOST_PP_CAT(result_of_select_call_wrapper_type_, BOOST_PP_ITERATION())<F>::type wrapper_t;
+    static const bool value = (
+        sizeof(result_of_no_type) == sizeof(detail::result_of_is_private_type(
+            (boost::declval<wrapper_t>()(BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)), result_of_weird_type())
+        ))
+    );
+    typedef integral_constant<bool, value> type;
+};
+
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), true>
+    : lazy_enable_if<
+          BOOST_PP_CAT(result_of_is_callable_, BOOST_PP_ITERATION())<F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(), T)>
+        , cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false>
+      >
+{};
+
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), false>
+{
+  typedef decltype(
+    boost::declval<F>()(
+      BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)
+    )
+  ) type;
+};
+
+#else // BOOST_NO_SFINAE_EXPR
+
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct cpp0x_result_of_impl<F(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)),
+                            typename result_of_always_void<decltype(
+                                boost::declval<F>()(
+                                    BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)
+                                )
+                            )>::type> {
+  typedef decltype(
+    boost::declval<F>()(
+      BOOST_PP_ENUM_BINARY_PARAMS(BOOST_PP_ITERATION(), boost::declval<T, >() BOOST_PP_INTERCEPT)
+    )
+  ) type;
+};
+
+#endif // BOOST_NO_SFINAE_EXPR
+
+} // namespace detail
+
+#else // defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)
+
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))
+template<typename F BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct result_of<F(BOOST_RESULT_OF_ARGS)>
+    : tr1_result_of<F(BOOST_RESULT_OF_ARGS)> { };
+#endif
+
+#endif // defined(BOOST_RESULT_OF_USE_DECLTYPE)
+
+#undef BOOST_RESULT_OF_ARGS
+
+#if BOOST_PP_ITERATION() >= 1
+
+namespace detail {
+
+template<typename R,  typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of_impl<R (*)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R,  typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of_impl<R (&)(BOOST_PP_ENUM_PARAMS(BOOST_PP_ITERATION(),T)), FArgs, false>
+{
+  typedef R type;
+};
+
+#if !BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))
+template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of_impl<R (T0::*)
+                     (BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T)),
+                 FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of_impl<R (T0::*)
+                     (BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
+                     const,
+                 FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of_impl<R (T0::*)
+                     (BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
+                     volatile,
+                 FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs BOOST_PP_ENUM_TRAILING_PARAMS(BOOST_PP_ITERATION(),typename T)>
+struct tr1_result_of_impl<R (T0::*)
+                     (BOOST_PP_ENUM_SHIFTED_PARAMS(BOOST_PP_ITERATION(),T))
+                     const volatile,
+                 FArgs, false>
+{
+  typedef R type;
+};
+#endif
+
+}
+#endif

include/boost/utility/detail/result_of_variadic.hpp

@@ -0,0 +1,190 @@
+// Boost result_of library
+
+//  Copyright Douglas Gregor 2004. Use, modification and
+//  distribution is subject to the Boost Software License, Version
+//  1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  Copyright Daniel Walker, Eric Niebler, Michel Morin 2008-2012.
+//  Use, modification and distribution is subject to the Boost Software
+//  License, Version 1.0. (See accompanying file LICENSE_1_0.txt or
+//  copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// For more information, see http://www.boost.org/libs/utility
+
+#ifndef BOOST_RESULT_OF_HPP
+# error Boost result_of - do not include this file!
+#endif
+
+template<typename F, typename... Args>
+struct tr1_result_of<F(Args...)>
+    : conditional<
+        is_pointer<F>::value || is_member_function_pointer<F>::value
+        , boost::detail::tr1_result_of_impl<
+            typename remove_cv<F>::type,
+            typename remove_cv<F>::type(Args...),
+            (boost::detail::result_of_has_result_type<F>::value)>
+        , boost::detail::tr1_result_of_impl<
+            F,
+            F(Args...),
+            (boost::detail::result_of_has_result_type<F>::value)> >::type { };
+
+#ifdef BOOST_RESULT_OF_USE_DECLTYPE
+template<typename F, typename... Args>
+struct result_of<F(Args...)>
+    : detail::cpp0x_result_of<F(Args...)> { };
+#endif // BOOST_RESULT_OF_USE_DECLTYPE
+
+#ifdef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
+template<typename F, typename... Args>
+struct result_of<F(Args...)>
+    : conditional<detail::result_of_has_result_type<F>::value || detail::result_of_has_result<F>::value,
+               tr1_result_of<F(Args...)>,
+               detail::cpp0x_result_of<F(Args...)> >::type { };
+#endif // BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
+
+#if defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)
+
+namespace detail {
+
+template<typename F, typename... Args>
+struct cpp0x_result_of<F(Args...)>
+    : conditional<
+          is_member_function_pointer<F>::value
+        , detail::tr1_result_of_impl<
+            typename remove_cv<F>::type,
+            typename remove_cv<F>::type(Args...), false
+          >
+        , detail::cpp0x_result_of_impl<
+              F(Args...)
+          >
+      >::type
+{};
+
+#ifdef BOOST_NO_SFINAE_EXPR
+
+template<typename F>
+struct result_of_callable_fun_2;
+
+template<typename R, typename... Args>
+struct result_of_callable_fun_2<R(Args...)> {
+    R operator()(Args...) const;
+    typedef result_of_private_type const &(*pfn_t)(...);
+    operator pfn_t() const volatile;
+};
+
+template<typename F>
+struct result_of_callable_fun
+  : result_of_callable_fun_2<F>
+{};
+
+template<typename F>
+struct result_of_callable_fun<F *>
+  : result_of_callable_fun_2<F>
+{};
+
+template<typename F>
+struct result_of_select_call_wrapper_type
+  : conditional<
+        is_class<typename remove_reference<F>::type>::value,
+        result_of_wrap_callable_class<F>,
+        type_identity<result_of_callable_fun<typename remove_cv<typename remove_reference<F>::type>::type> >
+    >::type
+{};
+
+template<typename F, typename... Args>
+struct result_of_is_callable {
+    typedef typename result_of_select_call_wrapper_type<F>::type wrapper_t;
+    static const bool value = (
+        sizeof(result_of_no_type) == sizeof(detail::result_of_is_private_type(
+            (boost::declval<wrapper_t>()(boost::declval<Args>()...), result_of_weird_type())
+        ))
+    );
+    typedef integral_constant<bool, value> type;
+};
+
+template<typename F, typename... Args>
+struct cpp0x_result_of_impl<F(Args...), true>
+    : lazy_enable_if<
+          result_of_is_callable<F, Args...>
+        , cpp0x_result_of_impl<F(Args...), false>
+      >
+{};
+
+template<typename F, typename... Args>
+struct cpp0x_result_of_impl<F(Args...), false>
+{
+  typedef decltype(
+    boost::declval<F>()(
+      boost::declval<Args>()...
+    )
+  ) type;
+};
+
+#else // BOOST_NO_SFINAE_EXPR
+
+template<typename F, typename... Args>
+struct cpp0x_result_of_impl<F(Args...),
+                            typename result_of_always_void<decltype(
+                                boost::declval<F>()(
+                                    boost::declval<Args>()...
+                                )
+                            )>::type> {
+  typedef decltype(
+    boost::declval<F>()(
+      boost::declval<Args>()...
+    )
+  ) type;
+};
+
+#endif // BOOST_NO_SFINAE_EXPR
+
+} // namespace detail
+
+#else // defined(BOOST_RESULT_OF_USE_DECLTYPE) || defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)
+
+template<typename F, typename... Args>
+struct result_of<F(Args...)>
+    : tr1_result_of<F(Args...)> { };
+
+#endif // defined(BOOST_RESULT_OF_USE_DECLTYPE)
+
+namespace detail {
+
+template<typename R, typename FArgs, typename... Args>
+struct tr1_result_of_impl<R (*)(Args...), FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs, typename... Args>
+struct tr1_result_of_impl<R (&)(Args...), FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs, typename C, typename... Args>
+struct tr1_result_of_impl<R (C::*)(Args...), FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs, typename C, typename... Args>
+struct tr1_result_of_impl<R (C::*)(Args...) const, FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs, typename C, typename... Args>
+struct tr1_result_of_impl<R (C::*)(Args...) volatile, FArgs, false>
+{
+  typedef R type;
+};
+
+template<typename R, typename FArgs, typename C, typename... Args>
+struct tr1_result_of_impl<R (C::*)(Args...) const volatile, FArgs, false>
+{
+  typedef R type;
+};
+
+}

include/boost/utility/identity_type.hpp

@@ -0,0 +1,46 @@
+
+// Copyright (C) 2009-2012 Lorenzo Caminiti
+// Distributed under the Boost Software License, Version 1.0
+// (see accompanying file LICENSE_1_0.txt or a copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+// Home at http://www.boost.org/libs/utility/identity_type
+
+/** @file
+Wrap type expressions with round parenthesis so they can be passed to macros
+even if they contain commas.
+*/
+
+#ifndef BOOST_IDENTITY_TYPE_HPP_
+#define BOOST_IDENTITY_TYPE_HPP_
+
+#include <boost/type_traits/function_traits.hpp>
+
+/**
+@brief This macro allows to wrap the specified type expression within extra
+round parenthesis so the type can be passed as a single macro parameter even if
+it contains commas (not already wrapped within round parenthesis).
+
+@Params
+@Param{parenthesized_type,
+The type expression to be passed as macro parameter wrapped by a single set
+of round parenthesis <c>(...)</c>.
+This type expression can contain an arbitrary number of commas.
+}
+@EndParams
+
+This macro works on any C++03 compiler (it does not use variadic macros).
+
+This macro must be prefixed by <c>typename</c> when used within templates.
+Note that the compiler will not be able to automatically determine function
+template parameters when they are wrapped with this macro (these parameters
+need to be explicitly specified when calling the function template).
+
+On some compilers (like GCC), using this macro on abstract types requires to
+add and remove a reference to the specified type.
+*/
+#define BOOST_IDENTITY_TYPE(parenthesized_type) \
+    /* must NOT prefix this with `::` to work with parenthesized syntax */ \
+    boost::function_traits< void parenthesized_type >::arg1_type
+
+#endif // #include guard
+

include/boost/utility/in_place_factory.hpp

@@ -0,0 +1,92 @@
+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+// Copyright (C) 2007, Tobias Schwinger.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  fernando_cacciola@hotmail.com
+//
+#ifndef BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP
+#ifndef BOOST_PP_IS_ITERATING
+
+#include <boost/utility/detail/in_place_factory_prefix.hpp>
+
+namespace boost {
+
+class in_place_factory_base {} ;
+
+#ifndef BOOST_UTILITY_DOCS
+#define  BOOST_PP_ITERATION_LIMITS (0, BOOST_MAX_INPLACE_FACTORY_ARITY)
+#define  BOOST_PP_FILENAME_1 <boost/utility/in_place_factory.hpp>
+#endif // BOOST_UTILITY_DOCS
+
+#include BOOST_PP_ITERATE()
+
+} // namespace boost
+
+#include <boost/utility/detail/in_place_factory_suffix.hpp>
+
+#ifndef BOOST_UTILITY_DOCS
+#define BOOST_UTILITY_INPLACE_FACTORY_04APR2007_HPP
+#endif
+
+#else
+#define N BOOST_PP_ITERATION()
+
+#if N
+template< BOOST_PP_ENUM_PARAMS(N, class A) >
+#endif
+class BOOST_PP_CAT(in_place_factory,N)
+  : 
+  public in_place_factory_base
+{
+public:
+
+  explicit BOOST_PP_CAT(in_place_factory,N)
+      ( BOOST_PP_ENUM_BINARY_PARAMS(N,A,const& a) )
+#if N > 0
+    : BOOST_PP_ENUM(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _)
+#endif
+  {}
+
+  template<class T>
+  void* apply(void* address) const
+  {
+    return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) );
+  }
+
+  template<class T>
+  void* apply(void* address, std::size_t n) const
+  {
+    for(char* next = address = this->BOOST_NESTED_TEMPLATE apply<T>(address);
+        !! --n;)
+      this->BOOST_NESTED_TEMPLATE apply<T>(next = next+sizeof(T));
+    return address; 
+  }
+
+  BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _)
+};
+
+#if N > 0
+template< BOOST_PP_ENUM_PARAMS(N, class A) >
+inline BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) >
+in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
+{
+  return BOOST_PP_CAT(in_place_factory,N)< BOOST_PP_ENUM_PARAMS(N, A) >
+      ( BOOST_PP_ENUM_PARAMS(N, a) );
+}
+#else
+inline in_place_factory0 in_place()
+{
+  return in_place_factory0();
+}
+#endif
+
+#undef N
+#endif
+#endif
+

include/boost/utility/result_of.hpp

@@ -0,0 +1,256 @@
+// Boost result_of library
+
+//  Copyright Douglas Gregor 2004. Use, modification and
+//  distribution is subject to the Boost Software License, Version
+//  1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+// For more information, see http://www.boost.org/libs/utility
+#ifndef BOOST_RESULT_OF_HPP
+#define BOOST_RESULT_OF_HPP
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/type_traits/is_class.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/type_traits/is_member_function_pointer.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/type_traits/declval.hpp>
+#include <boost/type_traits/conditional.hpp>
+#include <boost/type_traits/type_identity.hpp>
+#include <boost/type_traits/integral_constant.hpp>
+#include <boost/core/enable_if.hpp>
+
+#ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
+#  undef BOOST_RESULT_OF_NO_VARIADIC_TEMPLATES
+#  define BOOST_RESULT_OF_NO_VARIADIC_TEMPLATES
+#endif
+#ifdef BOOST_RESULT_OF_NO_VARIADIC_TEMPLATES
+#  include <boost/preprocessor/cat.hpp>
+#  include <boost/preprocessor/iteration/iterate.hpp>
+#  include <boost/preprocessor/repetition/enum_params.hpp>
+#  include <boost/preprocessor/repetition/enum_trailing_params.hpp>
+#  include <boost/preprocessor/repetition/enum_binary_params.hpp>
+#  include <boost/preprocessor/repetition/enum_shifted_params.hpp>
+#  include <boost/preprocessor/facilities/intercept.hpp>
+#endif
+
+#ifndef BOOST_UTILITY_DOCS
+#ifndef BOOST_RESULT_OF_NUM_ARGS
+#  define BOOST_RESULT_OF_NUM_ARGS 16
+#endif
+#endif // BOOST_UTILITY_DOCS
+
+// Use the decltype-based version of result_of by default if the compiler
+// supports N3276 <http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2011/n3276.pdf>.
+// The user can force the choice by defining BOOST_RESULT_OF_USE_DECLTYPE,
+// BOOST_RESULT_OF_USE_TR1, or BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK but not more than one!
+#if (defined(BOOST_RESULT_OF_USE_DECLTYPE) && defined(BOOST_RESULT_OF_USE_TR1)) || \
+    (defined(BOOST_RESULT_OF_USE_DECLTYPE) && defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK)) || \
+    (defined(BOOST_RESULT_OF_USE_TR1) && defined(BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK))
+#  error More than one of BOOST_RESULT_OF_USE_DECLTYPE, BOOST_RESULT_OF_USE_TR1 and \
+  BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK cannot be defined at the same time.
+#endif
+
+#ifndef BOOST_UTILITY_DOCS
+#ifndef BOOST_RESULT_OF_USE_TR1
+#  ifndef BOOST_RESULT_OF_USE_DECLTYPE
+#    ifndef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
+#      ifndef BOOST_NO_CXX11_DECLTYPE_N3276 // this implies !defined(BOOST_NO_CXX11_DECLTYPE)
+#        define BOOST_RESULT_OF_USE_DECLTYPE
+#      else
+#        define BOOST_RESULT_OF_USE_TR1
+#      endif
+#    endif
+#  endif
+#endif
+#endif // BOOST_UTILITY_DOCS
+
+namespace boost {
+
+template<typename F> struct result_of;
+template<typename F> struct tr1_result_of; // a TR1-style implementation of result_of
+
+#if !defined(BOOST_NO_SFINAE)
+namespace detail {
+
+typedef char result_of_yes_type;      // sizeof(result_of_yes_type) == 1
+typedef char (&result_of_no_type)[2]; // sizeof(result_of_no_type)  == 2
+
+template<class T> struct result_of_has_type {};
+
+template<class T> struct result_of_has_result_type_impl
+{
+    template<class U> static result_of_yes_type f( result_of_has_type<typename U::result_type>* );
+    template<class U> static result_of_no_type f( ... );
+
+    typedef boost::integral_constant<bool, sizeof(f<T>(0)) == sizeof(result_of_yes_type)> type;
+};
+
+template<class T> struct result_of_has_result_type: result_of_has_result_type_impl<T>::type
+{
+};
+
+// Work around a nvcc bug by only defining has_result when it's needed.
+#ifdef BOOST_RESULT_OF_USE_TR1_WITH_DECLTYPE_FALLBACK
+
+template<template<class> class C> struct result_of_has_template {};
+
+template<class T> struct result_of_has_result_impl
+{
+    template<class U> static result_of_yes_type f( result_of_has_template<U::template result>* );
+    template<class U> static result_of_no_type f( ... );
+
+    typedef boost::integral_constant<bool, sizeof(f<T>(0)) == sizeof(result_of_yes_type)> type;
+};
+
+template<class T> struct result_of_has_result: result_of_has_result_impl<T>::type
+{
+};
+
+#endif
+
+template<typename F, typename FArgs, bool HasResultType> struct tr1_result_of_impl;
+
+template<typename F> struct cpp0x_result_of;
+
+#ifdef BOOST_NO_SFINAE_EXPR
+
+// There doesn't seem to be any other way to turn this off such that the presence of
+// the user-defined operator,() below doesn't cause spurious warning all over the place,
+// so unconditionally and globally turn it off. (https://svn.boost.org/trac10/ticket/7663)
+#ifdef BOOST_MSVC
+#  pragma warning(disable: 4913) // user defined binary operator ',' exists but no overload could convert all operands, default built-in binary operator ',' used
+#endif
+
+struct result_of_private_type {};
+
+struct result_of_weird_type {
+  friend result_of_private_type operator,(result_of_private_type, result_of_weird_type);
+};
+
+template<typename T>
+result_of_no_type result_of_is_private_type(T const &);
+result_of_yes_type result_of_is_private_type(result_of_private_type);
+
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#  pragma warning(disable: 4512) // assignment operator could not be generated.
+#endif
+template<typename C>
+struct result_of_callable_class : C {
+    result_of_callable_class();
+    typedef result_of_private_type const &(*pfn_t)(...);
+    operator pfn_t() const volatile;
+};
+#ifdef BOOST_MSVC
+#  pragma warning(pop)
+#endif
+
+template<typename C>
+struct result_of_wrap_callable_class {
+  typedef result_of_callable_class<C> type;
+};
+
+template<typename C>
+struct result_of_wrap_callable_class<C const> {
+  typedef result_of_callable_class<C> const type;
+};
+
+template<typename C>
+struct result_of_wrap_callable_class<C volatile> {
+  typedef result_of_callable_class<C> volatile type;
+};
+
+template<typename C>
+struct result_of_wrap_callable_class<C const volatile> {
+  typedef result_of_callable_class<C> const volatile type;
+};
+
+template<typename C>
+struct result_of_wrap_callable_class<C &> {
+  typedef typename result_of_wrap_callable_class<C>::type &type;
+};
+
+template<typename F, bool TestCallability = true> struct cpp0x_result_of_impl;
+
+#else // BOOST_NO_SFINAE_EXPR
+
+template<typename T>
+struct result_of_always_void
+{
+  typedef void type;
+};
+
+template<typename F, typename Enable = void> struct cpp0x_result_of_impl {};
+
+#endif // BOOST_NO_SFINAE_EXPR
+
+template<typename F>
+struct result_of_void_impl
+{
+  typedef void type;
+};
+
+template<typename R>
+struct result_of_void_impl<R (*)(void)>
+{
+  typedef R type;
+};
+
+template<typename R>
+struct result_of_void_impl<R (&)(void)>
+{
+  typedef R type;
+};
+
+// Determine the return type of a function pointer or pointer to member.
+template<typename F, typename FArgs>
+struct result_of_pointer
+  : tr1_result_of_impl<typename remove_cv<F>::type, FArgs, false> { };
+
+template<typename F, typename FArgs>
+struct tr1_result_of_impl<F, FArgs, true>
+{
+  typedef typename F::result_type type;
+};
+
+template<typename FArgs>
+struct is_function_with_no_args : false_type {};
+
+template<typename F>
+struct is_function_with_no_args<F(void)> : true_type {};
+
+template<typename F, typename FArgs>
+struct result_of_nested_result : F::template result<FArgs>
+{};
+
+template<typename F, typename FArgs>
+struct tr1_result_of_impl<F, FArgs, false>
+  : conditional<is_function_with_no_args<FArgs>::value,
+             result_of_void_impl<F>,
+             result_of_nested_result<F, FArgs> >::type
+{};
+
+} // end namespace detail
+
+#ifndef BOOST_RESULT_OF_NO_VARIADIC_TEMPLATES
+#  include <boost/utility/detail/result_of_variadic.hpp>
+#else
+#  define BOOST_PP_ITERATION_PARAMS_1 (3,(0,BOOST_RESULT_OF_NUM_ARGS,<boost/utility/detail/result_of_iterate.hpp>))
+#  include BOOST_PP_ITERATE()
+#endif
+
+#if 0
+// inform dependency trackers, as they can't see through macro includes
+#include <boost/utility/detail/result_of_iterate.hpp>
+#endif
+
+#else
+#  define BOOST_NO_RESULT_OF 1
+#endif
+
+}
+
+#endif // BOOST_RESULT_OF_HPP

include/boost/utility/string_ref.hpp

@@ -0,0 +1,520 @@
+/*
+   Copyright (c) Marshall Clow 2012-2015.
+   Copyright (c) Glen Joseph Fernandes 2019 (glenjofe@gmail.com)
+
+   Distributed under the Boost Software License, Version 1.0. (See accompanying
+   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    For more information, see http://www.boost.org
+
+    Based on the StringRef implementation in LLVM (http://llvm.org) and
+    N3422 by Jeffrey Yasskin
+        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
+
+*/
+
+#ifndef BOOST_STRING_REF_HPP
+#define BOOST_STRING_REF_HPP
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/io/ostream_put.hpp>
+#include <boost/utility/string_ref_fwd.hpp>
+#include <boost/throw_exception.hpp>
+
+#include <cstddef>
+#include <stdexcept>
+#include <algorithm>
+#include <iterator>
+#include <string>
+#include <iosfwd>
+
+#if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || (defined(BOOST_GCC) && ((BOOST_GCC+0) / 100) <= 406)
+// GCC 4.6 cannot handle a defaulted function with noexcept specifier
+#define BOOST_STRING_REF_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
+#endif
+
+namespace boost {
+
+    namespace detail {
+    //  A helper functor because sometimes we don't have lambdas
+        template <typename charT, typename traits>
+        class string_ref_traits_eq {
+        public:
+            string_ref_traits_eq ( charT ch ) : ch_(ch) {}
+            bool operator () ( charT val ) const { return traits::eq ( ch_, val ); }
+            charT ch_;
+            };
+        }
+
+    template<typename charT, typename traits>
+    class basic_string_ref {
+    public:
+        // types
+        typedef charT value_type;
+        typedef const charT* pointer;
+        typedef const charT& reference;
+        typedef const charT& const_reference;
+        typedef pointer const_iterator; // impl-defined
+        typedef const_iterator iterator;
+        typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+        typedef const_reverse_iterator reverse_iterator;
+        typedef std::size_t size_type;
+        typedef std::ptrdiff_t difference_type;
+        static BOOST_CONSTEXPR_OR_CONST size_type npos = size_type(-1);
+
+        // construct/copy
+        BOOST_CONSTEXPR basic_string_ref () BOOST_NOEXCEPT
+            : ptr_(NULL), len_(0) {}
+
+        // by defaulting these functions, basic_string_ref becomes
+        //  trivially copy/move constructible.
+        BOOST_CONSTEXPR basic_string_ref (const basic_string_ref &rhs) BOOST_NOEXCEPT
+#ifndef BOOST_STRING_REF_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
+            = default;
+#else
+            : ptr_(rhs.ptr_), len_(rhs.len_) {}
+#endif
+
+        basic_string_ref& operator=(const basic_string_ref &rhs) BOOST_NOEXCEPT
+#ifndef BOOST_STRING_REF_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
+            = default;
+#else
+            {
+            ptr_ = rhs.ptr_;
+            len_ = rhs.len_;
+            return *this;
+            }
+#endif
+
+        basic_string_ref(const charT* str) BOOST_NOEXCEPT
+            : ptr_(str), len_(traits::length(str)) {}
+
+        template<typename Allocator>
+        basic_string_ref(const std::basic_string<charT, traits, Allocator>& str)
+            : ptr_(str.data()), len_(str.length()) {}
+
+// #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
+//         // Constructing a string_ref from a temporary string is a bad idea
+//         template<typename Allocator>
+//         basic_string_ref(      std::basic_string<charT, traits, Allocator>&&)
+//             = delete;
+// #endif
+
+        BOOST_CONSTEXPR basic_string_ref(const charT* str, size_type len) BOOST_NOEXCEPT
+            : ptr_(str), len_(len) {}
+
+#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+        template<typename Allocator>
+        explicit operator std::basic_string<charT, traits, Allocator>() const {
+            return std::basic_string<charT, traits, Allocator> ( begin(), end());
+            }
+#endif
+
+        std::basic_string<charT, traits> to_string () const {
+            return std::basic_string<charT, traits> ( begin(), end());
+            }
+
+        // iterators
+        BOOST_CONSTEXPR const_iterator   begin() const { return ptr_; }
+        BOOST_CONSTEXPR const_iterator  cbegin() const { return ptr_; }
+        BOOST_CONSTEXPR const_iterator     end() const { return ptr_ + len_; }
+        BOOST_CONSTEXPR const_iterator    cend() const { return ptr_ + len_; }
+                const_reverse_iterator  rbegin() const { return const_reverse_iterator (end()); }
+                const_reverse_iterator crbegin() const { return const_reverse_iterator (end()); }
+                const_reverse_iterator    rend() const { return const_reverse_iterator (begin()); }
+                const_reverse_iterator   crend() const { return const_reverse_iterator (begin()); }
+
+        // capacity
+        BOOST_CONSTEXPR size_type size()     const { return len_; }
+        BOOST_CONSTEXPR size_type length()   const { return len_; }
+        BOOST_CONSTEXPR size_type max_size() const { return ~static_cast<size_type>(0) / (sizeof(value_type) * 2u); }
+        BOOST_CONSTEXPR bool empty()         const { return len_ == 0; }
+
+        // element access
+        BOOST_CONSTEXPR const charT& operator[](size_type pos) const { return ptr_[pos]; }
+
+        const charT& at(size_type pos) const {
+            if ( pos >= len_ )
+                BOOST_THROW_EXCEPTION( std::out_of_range ( "boost::string_ref::at" ) );
+            return ptr_[pos];
+            }
+
+        BOOST_CONSTEXPR const charT& front() const { return ptr_[0]; }
+        BOOST_CONSTEXPR const charT& back()  const { return ptr_[len_-1]; }
+        BOOST_CONSTEXPR const charT* data()  const { return ptr_; }
+
+        // modifiers
+        void clear() { len_ = 0; }
+        void remove_prefix(size_type n) {
+            if ( n > len_ )
+                n = len_;
+            ptr_ += n;
+            len_ -= n;
+            }
+
+        void remove_suffix(size_type n) {
+            if ( n > len_ )
+                n = len_;
+            len_ -= n;
+            }
+
+
+        // basic_string_ref string operations
+        basic_string_ref substr() const {
+            return basic_string_ref(data(), size());
+            }
+
+        basic_string_ref substr(size_type pos, size_type n=npos) const {
+            if ( pos > size())
+                BOOST_THROW_EXCEPTION( std::out_of_range ( "string_ref::substr" ) );
+            return basic_string_ref(data() + pos, (std::min)(size() - pos, n));
+            }
+
+        int compare(basic_string_ref x) const {
+            const int cmp = traits::compare ( ptr_, x.ptr_, (std::min)(len_, x.len_));
+            return cmp != 0 ? cmp : ( len_ == x.len_ ? 0 : len_ < x.len_ ? -1 : 1 );
+            }
+
+        bool starts_with(charT c) const { return !empty() && traits::eq ( c, front()); }
+        bool starts_with(basic_string_ref x) const {
+            return len_ >= x.len_ && traits::compare ( ptr_, x.ptr_, x.len_ ) == 0;
+            }
+
+        bool ends_with(charT c) const { return !empty() && traits::eq ( c, back()); }
+        bool ends_with(basic_string_ref x) const {
+            return len_ >= x.len_ && traits::compare ( ptr_ + len_ - x.len_, x.ptr_, x.len_ ) == 0;
+            }
+
+        size_type find(basic_string_ref s) const {
+            if (s.empty()) return 0;
+            const_iterator iter = std::search ( this->cbegin (), this->cend (),
+                                                s.cbegin (), s.cend (), traits::eq );
+            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
+            }
+
+        size_type find(charT c) const {
+            const_iterator iter = std::find_if ( this->cbegin (), this->cend (),
+                                    detail::string_ref_traits_eq<charT, traits> ( c ));
+            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
+            }
+
+        size_type rfind(basic_string_ref s) const {
+            if (s.empty()) return 0;
+            const_reverse_iterator iter = std::search ( this->crbegin (), this->crend (),
+                                                s.crbegin (), s.crend (), traits::eq );
+            return iter == this->crend () ? npos : (std::distance(iter, this->crend()) - s.size());
+            }
+
+        size_type rfind(charT c) const {
+            const_reverse_iterator iter = std::find_if ( this->crbegin (), this->crend (),
+                                    detail::string_ref_traits_eq<charT, traits> ( c ));
+            return iter == this->crend () ? npos : (this->size() - 1 - std::distance(this->crbegin(), iter));
+            }
+
+        size_type find_first_of(charT c) const { return  find (c); }
+        size_type find_last_of (charT c) const { return rfind (c); }
+
+        size_type find_first_of(basic_string_ref s) const {
+            const_iterator iter = std::find_first_of
+                ( this->cbegin (), this->cend (), s.cbegin (), s.cend (), traits::eq );
+            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
+            }
+
+        size_type find_last_of(basic_string_ref s) const {
+            const_reverse_iterator iter = std::find_first_of
+                ( this->crbegin (), this->crend (), s.cbegin (), s.cend (), traits::eq );
+            return iter == this->crend () ? npos : (this->size() - 1 - std::distance(this->crbegin(), iter));
+            }
+
+        size_type find_first_not_of(basic_string_ref s) const {
+            const_iterator iter = find_not_of ( this->cbegin (), this->cend (), s );
+            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
+            }
+
+        size_type find_first_not_of(charT c) const {
+            for ( const_iterator iter = this->cbegin (); iter != this->cend (); ++iter )
+                if ( !traits::eq ( c, *iter ))
+                    return std::distance ( this->cbegin (), iter );
+            return npos;
+            }
+
+        size_type find_last_not_of(basic_string_ref s) const {
+            const_reverse_iterator iter = find_not_of ( this->crbegin (), this->crend (), s );
+            return iter == this->crend () ? npos : (this->size() - 1 - std::distance(this->crbegin(), iter));
+            }
+
+        size_type find_last_not_of(charT c) const {
+            for ( const_reverse_iterator iter = this->crbegin (); iter != this->crend (); ++iter )
+                if ( !traits::eq ( c, *iter ))
+                    return this->size() - 1 - std::distance(this->crbegin(), iter);
+            return npos;
+            }
+
+    private:
+
+        template <typename Iterator>
+        Iterator find_not_of ( Iterator first, Iterator last, basic_string_ref s ) const {
+            for ( ; first != last ; ++first )
+                if ( 0 == traits::find ( s.ptr_, s.len_, *first ))
+                    return first;
+            return last;
+            }
+
+
+
+        const charT *ptr_;
+        std::size_t len_;
+        };
+
+
+//  Comparison operators
+//  Equality
+    template<typename charT, typename traits>
+    inline bool operator==(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
+        if ( x.size () != y.size ()) return false;
+        return x.compare(y) == 0;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator==(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
+        return x == basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator==(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) == y;
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator==(basic_string_ref<charT, traits> x, const charT * y) {
+        return x == basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator==(const charT * x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) == y;
+        }
+
+//  Inequality
+    template<typename charT, typename traits>
+    inline bool operator!=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
+        if ( x.size () != y.size ()) return true;
+        return x.compare(y) != 0;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator!=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
+        return x != basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator!=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) != y;
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator!=(basic_string_ref<charT, traits> x, const charT * y) {
+        return x != basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator!=(const charT * x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) != y;
+        }
+
+//  Less than
+    template<typename charT, typename traits>
+    inline bool operator<(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
+        return x.compare(y) < 0;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator<(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
+        return x < basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator<(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) < y;
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator<(basic_string_ref<charT, traits> x, const charT * y) {
+        return x < basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator<(const charT * x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) < y;
+        }
+
+//  Greater than
+    template<typename charT, typename traits>
+    inline bool operator>(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
+        return x.compare(y) > 0;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator>(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
+        return x > basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator>(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) > y;
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator>(basic_string_ref<charT, traits> x, const charT * y) {
+        return x > basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator>(const charT * x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) > y;
+        }
+
+//  Less than or equal to
+    template<typename charT, typename traits>
+    inline bool operator<=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
+        return x.compare(y) <= 0;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator<=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
+        return x <= basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator<=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) <= y;
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator<=(basic_string_ref<charT, traits> x, const charT * y) {
+        return x <= basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator<=(const charT * x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) <= y;
+        }
+
+//  Greater than or equal to
+    template<typename charT, typename traits>
+    inline bool operator>=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
+        return x.compare(y) >= 0;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator>=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
+        return x >= basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline bool operator>=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) >= y;
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator>=(basic_string_ref<charT, traits> x, const charT * y) {
+        return x >= basic_string_ref<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline bool operator>=(const charT * x, basic_string_ref<charT, traits> y) {
+        return basic_string_ref<charT, traits>(x) >= y;
+        }
+
+    // Inserter
+    template<class charT, class traits>
+    inline std::basic_ostream<charT, traits>&
+    operator<<(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
+        return boost::io::ostream_put(os, str.data(), str.size());
+        }
+
+#if 0
+    // numeric conversions
+    //
+    //  These are short-term implementations.
+    //  In a production environment, I would rather avoid the copying.
+    //
+    inline int stoi (string_ref str, size_t* idx=0, int base=10) {
+        return std::stoi ( std::string(str), idx, base );
+        }
+
+    inline long stol (string_ref str, size_t* idx=0, int base=10) {
+        return std::stol ( std::string(str), idx, base );
+        }
+
+    inline unsigned long stoul (string_ref str, size_t* idx=0, int base=10) {
+        return std::stoul ( std::string(str), idx, base );
+        }
+
+    inline long long stoll (string_ref str, size_t* idx=0, int base=10) {
+        return std::stoll ( std::string(str), idx, base );
+        }
+
+    inline unsigned long long stoull (string_ref str, size_t* idx=0, int base=10) {
+        return std::stoull ( std::string(str), idx, base );
+        }
+
+    inline float stof (string_ref str, size_t* idx=0) {
+        return std::stof ( std::string(str), idx );
+        }
+
+    inline double stod (string_ref str, size_t* idx=0) {
+        return std::stod ( std::string(str), idx );
+        }
+
+    inline long double stold (string_ref str, size_t* idx=0)  {
+        return std::stold ( std::string(str), idx );
+        }
+
+    inline int  stoi (wstring_ref str, size_t* idx=0, int base=10) {
+        return std::stoi ( std::wstring(str), idx, base );
+        }
+
+    inline long stol (wstring_ref str, size_t* idx=0, int base=10) {
+        return std::stol ( std::wstring(str), idx, base );
+        }
+
+    inline unsigned long stoul (wstring_ref str, size_t* idx=0, int base=10) {
+        return std::stoul ( std::wstring(str), idx, base );
+        }
+
+    inline long long stoll (wstring_ref str, size_t* idx=0, int base=10) {
+        return std::stoll ( std::wstring(str), idx, base );
+        }
+
+    inline unsigned long long stoull (wstring_ref str, size_t* idx=0, int base=10) {
+        return std::stoull ( std::wstring(str), idx, base );
+        }
+
+    inline float  stof (wstring_ref str, size_t* idx=0) {
+        return std::stof ( std::wstring(str), idx );
+        }
+
+    inline double stod (wstring_ref str, size_t* idx=0) {
+        return std::stod ( std::wstring(str), idx );
+        }
+
+    inline long double stold (wstring_ref str, size_t* idx=0) {
+        return std::stold ( std::wstring(str), idx );
+        }
+#endif
+
+}
+
+#if 0
+namespace std {
+    // Hashing
+    template<> struct hash<boost::string_ref>;
+    template<> struct hash<boost::u16string_ref>;
+    template<> struct hash<boost::u32string_ref>;
+    template<> struct hash<boost::wstring_ref>;
+}
+#endif
+
+#endif

include/boost/utility/string_ref_fwd.hpp

@@ -0,0 +1,37 @@
+/*
+   Copyright (c) Marshall Clow 2012-2012.
+
+   Distributed under the Boost Software License, Version 1.0. (See accompanying
+   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    For more information, see http://www.boost.org
+
+    Based on the StringRef implementation in LLVM (http://llvm.org) and
+    N3422 by Jeffrey Yasskin
+        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
+
+*/
+
+#ifndef BOOST_STRING_REF_FWD_HPP
+#define BOOST_STRING_REF_FWD_HPP
+
+#include <boost/config.hpp>
+#include <string>
+
+namespace boost {
+
+    template<typename charT, typename traits = std::char_traits<charT> > class basic_string_ref;
+    typedef basic_string_ref<char,     std::char_traits<char> >        string_ref;
+    typedef basic_string_ref<wchar_t,  std::char_traits<wchar_t> >    wstring_ref;
+
+#ifndef BOOST_NO_CXX11_CHAR16_T
+    typedef basic_string_ref<char16_t, std::char_traits<char16_t> > u16string_ref;
+#endif
+
+#ifndef BOOST_NO_CXX11_CHAR32_T
+    typedef basic_string_ref<char32_t, std::char_traits<char32_t> > u32string_ref;
+#endif
+
+}
+
+#endif

include/boost/utility/string_view.hpp

@@ -0,0 +1,694 @@
+/*
+   Copyright (c) Marshall Clow 2012-2015.
+   Copyright (c) Beman Dawes 2015
+   Copyright (c) Glen Joseph Fernandes 2019 (glenjofe@gmail.com)
+
+   Distributed under the Boost Software License, Version 1.0. (See accompanying
+   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    For more information, see http://www.boost.org
+
+    Based on the StringRef implementation in LLVM (http://llvm.org) and
+    N3422 by Jeffrey Yasskin
+        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
+    Updated July 2015 to reflect the Library Fundamentals TS
+        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html
+*/
+
+#ifndef BOOST_STRING_VIEW_HPP
+#define BOOST_STRING_VIEW_HPP
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/io/ostream_put.hpp>
+#include <boost/utility/string_view_fwd.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/assert.hpp>
+
+#include <cstddef>
+#include <stdexcept>
+#include <algorithm>
+#include <iterator>
+#include <string>
+#include <cstring>
+#include <iosfwd>
+
+#if defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || (defined(BOOST_GCC) && ((BOOST_GCC+0) / 100) <= 406)
+// GCC 4.6 cannot handle a defaulted function with noexcept specifier
+#define BOOST_STRING_VIEW_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
+#endif
+
+namespace boost {
+
+    namespace detail {
+    //  A helper functor because sometimes we don't have lambdas
+        template <typename charT, typename traits>
+        class string_view_traits_eq {
+        public:
+            string_view_traits_eq ( charT ch ) : ch_(ch) {}
+            bool operator()( charT val ) const { return traits::eq (ch_, val); }
+            charT ch_;
+            };
+        }
+
+    template<typename charT, typename traits>  // traits defaulted in string_view_fwd.hpp
+    class basic_string_view {
+    public:
+      // types
+      typedef traits                                traits_type;
+      typedef charT                                 value_type;
+      typedef charT*                                pointer;
+      typedef const charT*                          const_pointer;
+      typedef charT&                                reference;
+      typedef const charT&                          const_reference;
+      typedef const_pointer                         const_iterator; // impl-defined
+      typedef const_iterator                        iterator;
+      typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+      typedef const_reverse_iterator                reverse_iterator;
+      typedef std::size_t                           size_type;
+      typedef std::ptrdiff_t                        difference_type;
+      static BOOST_CONSTEXPR_OR_CONST size_type     npos = size_type(-1);
+
+      // construct/copy
+      BOOST_CONSTEXPR basic_string_view() BOOST_NOEXCEPT
+        : ptr_(NULL), len_(0) {}
+
+      // by defaulting these functions, basic_string_ref becomes
+      //  trivially copy/move constructible.
+      BOOST_CONSTEXPR basic_string_view(const basic_string_view &rhs) BOOST_NOEXCEPT
+#ifndef BOOST_STRING_VIEW_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
+        = default;
+#else
+        : ptr_(rhs.ptr_), len_(rhs.len_) {}
+#endif
+
+      basic_string_view& operator=(const basic_string_view &rhs) BOOST_NOEXCEPT
+#ifndef BOOST_STRING_VIEW_NO_CXX11_DEFAULTED_NOEXCEPT_FUNCTIONS
+            = default;
+#else
+        {
+        ptr_ = rhs.ptr_;
+        len_ = rhs.len_;
+        return *this;
+        }
+#endif
+
+      template<typename Allocator>
+        basic_string_view(const std::basic_string<charT, traits, Allocator>& str) BOOST_NOEXCEPT
+          : ptr_(str.data()), len_(str.length()) {}
+
+// #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
+//       // Constructing a string_view from a temporary string is a bad idea
+//       template<typename Allocator>
+//         basic_string_view(      std::basic_string<charT, traits, Allocator>&&)
+//           = delete;
+// #endif
+
+      BOOST_CONSTEXPR basic_string_view(const charT* str)
+        : ptr_(str), len_(traits::length(str)) {}
+
+      BOOST_CONSTEXPR basic_string_view(const charT* str, size_type len)
+        : ptr_(str), len_(len) {}
+
+        // iterators
+        BOOST_CONSTEXPR const_iterator   begin() const BOOST_NOEXCEPT { return ptr_; }
+        BOOST_CONSTEXPR const_iterator  cbegin() const BOOST_NOEXCEPT { return ptr_; }
+        BOOST_CONSTEXPR const_iterator     end() const BOOST_NOEXCEPT { return ptr_ + len_; }
+        BOOST_CONSTEXPR const_iterator    cend() const BOOST_NOEXCEPT { return ptr_ + len_; }
+                const_reverse_iterator  rbegin() const BOOST_NOEXCEPT { return const_reverse_iterator(end()); }
+                const_reverse_iterator crbegin() const BOOST_NOEXCEPT { return const_reverse_iterator(end()); }
+                const_reverse_iterator    rend() const BOOST_NOEXCEPT { return const_reverse_iterator(begin()); }
+                const_reverse_iterator   crend() const BOOST_NOEXCEPT { return const_reverse_iterator(begin()); }
+
+        // capacity
+        BOOST_CONSTEXPR size_type size()     const BOOST_NOEXCEPT { return len_; }
+        BOOST_CONSTEXPR size_type length()   const BOOST_NOEXCEPT { return len_; }
+        BOOST_CONSTEXPR size_type max_size() const BOOST_NOEXCEPT { return ~static_cast<size_type>(0) / (sizeof(value_type) * 2u); }
+        BOOST_CONSTEXPR bool empty()         const BOOST_NOEXCEPT { return len_ == 0; }
+
+        // element access
+        BOOST_CONSTEXPR const_reference operator[](size_type pos) const BOOST_NOEXCEPT { return ptr_[pos]; }
+
+        BOOST_CONSTEXPR const_reference at(size_type pos) const {
+            return pos >= len_ ? BOOST_THROW_EXCEPTION(std::out_of_range("boost::string_view::at")), ptr_[0] : ptr_[pos];
+            }
+
+        BOOST_CONSTEXPR const_reference front() const                { return ptr_[0]; }
+        BOOST_CONSTEXPR const_reference back()  const                { return ptr_[len_-1]; }
+        BOOST_CONSTEXPR const_pointer data()    const BOOST_NOEXCEPT { return ptr_; }
+
+        // modifiers
+        void clear() BOOST_NOEXCEPT { len_ = 0; }          // Boost extension
+
+        BOOST_CXX14_CONSTEXPR void remove_prefix(size_type n) {
+            BOOST_ASSERT(n <= size());
+            // This check is deprecated and is left for backward compatibility. It will be removed in the future.
+            if ( n > len_ )
+                n = len_;
+            ptr_ += n;
+            len_ -= n;
+            }
+
+        BOOST_CXX14_CONSTEXPR void remove_suffix(size_type n) {
+            BOOST_ASSERT(n <= size());
+            // This check is deprecated and is left for backward compatibility. It will be removed in the future.
+            if ( n > len_ )
+                n = len_;
+            len_ -= n;
+            }
+
+        BOOST_CXX14_CONSTEXPR void swap(basic_string_view& s) BOOST_NOEXCEPT {
+            std::swap(ptr_, s.ptr_);
+            std::swap(len_, s.len_);
+            }
+
+        // basic_string_view string operations
+#ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
+        template<typename Allocator>
+        explicit operator std::basic_string<charT, traits, Allocator>() const {
+            return std::basic_string<charT, traits, Allocator>(begin(), end());
+            }
+#endif
+
+#ifndef BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS
+        template<typename Allocator = std::allocator<charT> >
+        std::basic_string<charT, traits, Allocator> to_string(const Allocator& a = Allocator()) const {
+            return std::basic_string<charT, traits, Allocator>(begin(), end(), a);
+            }
+#else
+        std::basic_string<charT, traits> to_string() const {
+            return std::basic_string<charT, traits>(begin(), end());
+            }
+
+        template<typename Allocator>
+        std::basic_string<charT, traits, Allocator> to_string(const Allocator& a) const {
+            return std::basic_string<charT, traits, Allocator>(begin(), end(), a);
+            }
+#endif
+
+        size_type copy(charT* s, size_type n, size_type pos=0) const {
+            if (pos > size())
+                BOOST_THROW_EXCEPTION(std::out_of_range("string_view::copy" ));
+            size_type rlen = (std::min)(n, len_ - pos);
+            traits_type::copy(s, data() + pos, rlen);
+            return rlen;
+            }
+
+        BOOST_CXX14_CONSTEXPR basic_string_view substr() const {
+            return basic_string_view(data(), size());
+            }
+
+        BOOST_CXX14_CONSTEXPR basic_string_view substr(size_type pos, size_type n=npos) const {
+            if ( pos > size())
+                BOOST_THROW_EXCEPTION( std::out_of_range ( "string_view::substr" ) );
+            return basic_string_view(data() + pos, (std::min)(size() - pos, n));
+            }
+
+        BOOST_CXX14_CONSTEXPR int compare(basic_string_view x) const BOOST_NOEXCEPT {
+            const int cmp = traits::compare(ptr_, x.ptr_, (std::min)(len_, x.len_));
+            return cmp != 0 ? cmp : (len_ == x.len_ ? 0 : len_ < x.len_ ? -1 : 1);
+            }
+
+        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1, basic_string_view x)
+          const {
+            return substr(pos1, n1).compare(x);
+            }
+
+        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1,
+          basic_string_view x, size_type pos2, size_type n2) const {
+            return substr(pos1, n1).compare(x.substr(pos2, n2));
+            }
+
+        BOOST_CXX14_CONSTEXPR int compare(const charT* x) const {
+            return compare(basic_string_view(x));
+            }
+
+        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1, const charT* x) const {
+            return substr(pos1, n1).compare(basic_string_view(x));
+            }
+
+        BOOST_CXX14_CONSTEXPR int compare(size_type pos1, size_type n1,
+          const charT* x, size_type n2) const {
+            return substr(pos1, n1).compare(basic_string_view(x, n2));
+            }
+
+        //  Searches
+        BOOST_CONSTEXPR bool starts_with(charT c) const BOOST_NOEXCEPT {              // Boost extension
+            return !empty() && traits::eq(c, front());
+            }
+
+        BOOST_CONSTEXPR bool starts_with(basic_string_view x) const BOOST_NOEXCEPT {  // Boost extension
+            return len_ >= x.len_ && traits::compare(ptr_, x.ptr_, x.len_) == 0;
+            }
+
+        BOOST_CONSTEXPR bool ends_with(charT c) const BOOST_NOEXCEPT {                // Boost extension
+            return !empty() && traits::eq(c, back());
+            }
+
+        BOOST_CONSTEXPR bool ends_with(basic_string_view x) const BOOST_NOEXCEPT {    // Boost extension
+            return len_ >= x.len_ &&
+               traits::compare(ptr_ + len_ - x.len_, x.ptr_, x.len_) == 0;
+            }
+
+        BOOST_CXX14_CONSTEXPR bool contains(basic_string_view s) const BOOST_NOEXCEPT {
+            return find(s) != npos;
+            }
+
+        BOOST_CXX14_CONSTEXPR bool contains(charT c) const BOOST_NOEXCEPT {
+            return find(c) != npos;
+            }
+
+        BOOST_CXX14_CONSTEXPR bool contains(const charT* s) const BOOST_NOEXCEPT {
+            return find(s) != npos;
+            }
+
+        //  find
+        BOOST_CXX14_CONSTEXPR size_type find(basic_string_view s, size_type pos = 0) const BOOST_NOEXCEPT {
+            if (pos > size())
+              return npos;
+            if (s.empty())
+              return pos;
+            if (s.size() > size() - pos)
+                return npos;
+            const charT* cur = ptr_ + pos;
+            const charT* last = cend() - s.size() + 1;
+            for (; cur != last ; ++cur) {
+                cur = traits::find(cur, last - cur, s[0]);
+                if (!cur)
+                    return npos;
+                if (traits::compare(cur, s.cbegin(), s.size()) == 0)
+                    return cur - ptr_;
+            }
+            return npos;
+            }
+        BOOST_CXX14_CONSTEXPR size_type find(charT c, size_type pos = 0) const BOOST_NOEXCEPT {
+            if (pos > size())
+              return npos;
+            const charT* ret_ptr = traits::find(ptr_ + pos, len_ - pos, c);
+            if (ret_ptr)
+              return ret_ptr - ptr_;
+            return npos;
+            }
+        BOOST_CXX14_CONSTEXPR size_type find(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
+            { return find(basic_string_view(s, n), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find(const charT* s, size_type pos = 0) const BOOST_NOEXCEPT
+            { return find(basic_string_view(s), pos); }
+
+        //  rfind
+        BOOST_CXX14_CONSTEXPR size_type rfind(basic_string_view s, size_type pos = npos) const BOOST_NOEXCEPT {
+            if (len_ < s.len_)
+              return npos;
+            if (pos > len_ - s.len_)
+              pos = len_ - s.len_;
+            if (s.len_ == 0u)     // an empty string is always found
+              return pos;
+            for (const charT* cur = ptr_ + pos; ; --cur) {
+                if (traits::compare(cur, s.ptr_, s.len_) == 0)
+                  return cur - ptr_;
+                if (cur == ptr_)
+                  return npos;
+                };
+            }
+        BOOST_CXX14_CONSTEXPR size_type rfind(charT c, size_type pos = npos) const BOOST_NOEXCEPT
+            { return rfind(basic_string_view(&c, 1), pos); }
+        BOOST_CXX14_CONSTEXPR size_type rfind(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
+            { return rfind(basic_string_view(s, n), pos); }
+        BOOST_CXX14_CONSTEXPR size_type rfind(const charT* s, size_type pos = npos) const BOOST_NOEXCEPT
+            { return rfind(basic_string_view(s), pos); }
+
+        //  find_first_of
+        BOOST_CXX14_CONSTEXPR size_type find_first_of(basic_string_view s, size_type pos = 0) const BOOST_NOEXCEPT {
+            if (pos >= len_ || s.len_ == 0)
+              return npos;
+            const_iterator iter = std::find_first_of
+                (this->cbegin () + pos, this->cend (), s.cbegin (), s.cend (), traits::eq);
+            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
+            }
+        BOOST_CXX14_CONSTEXPR size_type find_first_of(charT c, size_type pos = 0) const BOOST_NOEXCEPT
+            { return find(c, pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_first_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
+            { return find_first_of(basic_string_view(s, n), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_first_of(const charT* s, size_type pos = 0) const BOOST_NOEXCEPT
+            { return find_first_of(basic_string_view(s), pos); }
+
+        //  find_last_of
+        BOOST_CXX14_CONSTEXPR size_type find_last_of(basic_string_view s, size_type pos = npos) const BOOST_NOEXCEPT {
+            if (s.len_ == 0u)
+              return npos;
+            if (pos >= len_)
+              pos = 0;
+            else
+              pos = len_ - (pos+1);
+            const_reverse_iterator iter = std::find_first_of
+                ( this->crbegin () + pos, this->crend (), s.cbegin (), s.cend (), traits::eq );
+            return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter);
+            }
+        BOOST_CXX14_CONSTEXPR size_type find_last_of(charT c, size_type pos = npos) const BOOST_NOEXCEPT
+            { return find_last_of(basic_string_view(&c, 1), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_last_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
+            { return find_last_of(basic_string_view(s, n), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_last_of(const charT* s, size_type pos = npos) const BOOST_NOEXCEPT
+            { return find_last_of(basic_string_view(s), pos); }
+
+        //  find_first_not_of
+        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(basic_string_view s, size_type pos = 0) const BOOST_NOEXCEPT {
+            if (pos >= len_)
+              return npos;
+            if (s.len_ == 0)
+              return pos;
+            const_iterator iter = find_not_of ( this->cbegin () + pos, this->cend (), s );
+            return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
+            }
+        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(charT c, size_type pos = 0) const BOOST_NOEXCEPT
+            { return find_first_not_of(basic_string_view(&c, 1), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
+            { return find_first_not_of(basic_string_view(s, n), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_first_not_of(const charT* s, size_type pos = 0) const BOOST_NOEXCEPT
+            { return find_first_not_of(basic_string_view(s), pos); }
+
+        //  find_last_not_of
+        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(basic_string_view s, size_type pos = npos) const BOOST_NOEXCEPT {
+            if (pos >= len_)
+              pos = len_ - 1;
+            if (s.len_ == 0u)
+              return pos;
+            pos = len_ - (pos+1);
+            const_reverse_iterator iter = find_not_of ( this->crbegin () + pos, this->crend (), s );
+            return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
+            }
+        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(charT c, size_type pos = npos) const BOOST_NOEXCEPT
+            { return find_last_not_of(basic_string_view(&c, 1), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(const charT* s, size_type pos, size_type n) const BOOST_NOEXCEPT
+            { return find_last_not_of(basic_string_view(s, n), pos); }
+        BOOST_CXX14_CONSTEXPR size_type find_last_not_of(const charT* s, size_type pos = npos) const BOOST_NOEXCEPT
+            { return find_last_not_of(basic_string_view(s), pos); }
+
+    private:
+        template <typename r_iter>
+        size_type reverse_distance(r_iter first, r_iter last) const BOOST_NOEXCEPT {
+        // Portability note here: std::distance is not NOEXCEPT, but calling it with a string_view::reverse_iterator will not throw.
+            return len_ - 1 - std::distance ( first, last );
+            }
+
+        template <typename Iterator>
+        Iterator find_not_of(Iterator first, Iterator last, basic_string_view s) const BOOST_NOEXCEPT {
+            for (; first != last ; ++first)
+                if ( 0 == traits::find(s.ptr_, s.len_, *first))
+                    return first;
+            return last;
+            }
+
+        const charT *ptr_;
+        std::size_t len_;
+        };
+
+
+//  Comparison operators
+//  Equality
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        if (x.size () != y.size ()) return false;
+        return x.compare(y) == 0;
+        }
+
+//  Inequality
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        if ( x.size () != y.size ()) return true;
+        return x.compare(y) != 0;
+        }
+
+//  Less than
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
+                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return x.compare(y) < 0;
+        }
+
+//  Greater than
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
+                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return x.compare(y) > 0;
+        }
+
+//  Less than or equal to
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return x.compare(y) <= 0;
+        }
+
+//  Greater than or equal to
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return x.compare(y) >= 0;
+        }
+
+// "sufficient additional overloads of comparison functions"
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
+                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
+        return x == basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator==(const std::basic_string<charT, traits, Allocator> & x,
+                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) == y;
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator==(basic_string_view<charT, traits> x,
+                                              const charT * y) BOOST_NOEXCEPT {
+        return x == basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator==(const charT * x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) == y;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
+                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
+        return x != basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator!=(const std::basic_string<charT, traits, Allocator> & x,
+                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) != y;
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator!=(basic_string_view<charT, traits> x,
+                           const charT * y) BOOST_NOEXCEPT {
+        return x != basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator!=(const charT * x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) != y;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
+                    const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
+        return x < basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator<(const std::basic_string<charT, traits, Allocator> & x,
+                                basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) < y;
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator<(basic_string_view<charT, traits> x,
+                          const charT * y) BOOST_NOEXCEPT {
+        return x < basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator<(const charT * x,
+                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) < y;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
+                    const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
+        return x > basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator>(const std::basic_string<charT, traits, Allocator> & x,
+                                basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) > y;
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator>(basic_string_view<charT, traits> x,
+                          const charT * y) BOOST_NOEXCEPT {
+        return x > basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator>(const charT * x,
+                          basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) > y;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
+                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
+        return x <= basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator<=(const std::basic_string<charT, traits, Allocator> & x,
+                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) <= y;
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator<=(basic_string_view<charT, traits> x,
+                           const charT * y) BOOST_NOEXCEPT {
+        return x <= basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator<=(const charT * x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) <= y;
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
+                     const std::basic_string<charT, traits, Allocator> & y) BOOST_NOEXCEPT {
+        return x >= basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits, typename Allocator>
+    inline BOOST_CXX14_CONSTEXPR bool operator>=(const std::basic_string<charT, traits, Allocator> & x,
+                                 basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) >= y;
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator>=(basic_string_view<charT, traits> x,
+                           const charT * y) BOOST_NOEXCEPT {
+        return x >= basic_string_view<charT, traits>(y);
+        }
+
+    template<typename charT, typename traits>
+    inline BOOST_CXX14_CONSTEXPR bool operator>=(const charT * x,
+                           basic_string_view<charT, traits> y) BOOST_NOEXCEPT {
+        return basic_string_view<charT, traits>(x) >= y;
+        }
+
+    // Inserter
+    template<class charT, class traits>
+    inline std::basic_ostream<charT, traits>&
+    operator<<(std::basic_ostream<charT, traits>& os,
+      const basic_string_view<charT,traits>& str) {
+        return boost::io::ostream_put(os, str.data(), str.size());
+        }
+
+#if 0
+    // numeric conversions
+    //
+    //  These are short-term implementations.
+    //  In a production environment, I would rather avoid the copying.
+    //
+    inline int stoi (string_view str, size_t* idx=0, int base=10) {
+        return std::stoi ( std::string(str), idx, base );
+        }
+
+    inline long stol (string_view str, size_t* idx=0, int base=10) {
+        return std::stol ( std::string(str), idx, base );
+        }
+
+    inline unsigned long stoul (string_view str, size_t* idx=0, int base=10) {
+        return std::stoul ( std::string(str), idx, base );
+        }
+
+    inline long long stoll (string_view str, size_t* idx=0, int base=10) {
+        return std::stoll ( std::string(str), idx, base );
+        }
+
+    inline unsigned long long stoull (string_view str, size_t* idx=0, int base=10) {
+        return std::stoull ( std::string(str), idx, base );
+        }
+
+    inline float stof (string_view str, size_t* idx=0) {
+        return std::stof ( std::string(str), idx );
+        }
+
+    inline double stod (string_view str, size_t* idx=0) {
+        return std::stod ( std::string(str), idx );
+        }
+
+    inline long double stold (string_view str, size_t* idx=0)  {
+        return std::stold ( std::string(str), idx );
+        }
+
+    inline int  stoi (wstring_view str, size_t* idx=0, int base=10) {
+        return std::stoi ( std::wstring(str), idx, base );
+        }
+
+    inline long stol (wstring_view str, size_t* idx=0, int base=10) {
+        return std::stol ( std::wstring(str), idx, base );
+        }
+
+    inline unsigned long stoul (wstring_view str, size_t* idx=0, int base=10) {
+        return std::stoul ( std::wstring(str), idx, base );
+        }
+
+    inline long long stoll (wstring_view str, size_t* idx=0, int base=10) {
+        return std::stoll ( std::wstring(str), idx, base );
+        }
+
+    inline unsigned long long stoull (wstring_view str, size_t* idx=0, int base=10) {
+        return std::stoull ( std::wstring(str), idx, base );
+        }
+
+    inline float  stof (wstring_view str, size_t* idx=0) {
+        return std::stof ( std::wstring(str), idx );
+        }
+
+    inline double stod (wstring_view str, size_t* idx=0) {
+        return std::stod ( std::wstring(str), idx );
+        }
+
+    inline long double stold (wstring_view str, size_t* idx=0) {
+        return std::stold ( std::wstring(str), idx );
+        }
+#endif
+
+    // Forward declaration of Boost.ContainerHash function
+    template <class It> std::size_t hash_range(It, It);
+
+    template <class charT, class traits>
+    std::size_t hash_value(basic_string_view<charT, traits> s) {
+        return boost::hash_range(s.begin(), s.end());
+        }
+}
+
+#if 0
+namespace std {
+    // Hashing
+    template<> struct hash<boost::string_view>;
+    template<> struct hash<boost::u16string_view>;
+    template<> struct hash<boost::u32string_view>;
+    template<> struct hash<boost::wstring_view>;
+}
+#endif
+
+#endif

include/boost/utility/string_view_fwd.hpp

@@ -0,0 +1,39 @@
+/*
+   Copyright (c) Marshall Clow 2012-2012.
+
+   Distributed under the Boost Software License, Version 1.0. (See accompanying
+   file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+    For more information, see http://www.boost.org
+
+    Based on the StringRef implementation in LLVM (http://llvm.org) and
+    N3422 by Jeffrey Yasskin
+        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
+    Updated July 2015 to reflect the Library Fundamentals TS
+        http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4480.html
+
+*/
+
+#ifndef BOOST_STRING_VIEW_FWD_HPP
+#define BOOST_STRING_VIEW_FWD_HPP
+
+#include <boost/config.hpp>
+#include <string>
+
+namespace boost {
+
+    template<typename charT, typename traits = std::char_traits<charT> > class basic_string_view;
+    typedef basic_string_view<char,     std::char_traits<char> >        string_view;
+    typedef basic_string_view<wchar_t,  std::char_traits<wchar_t> >    wstring_view;
+
+#ifndef BOOST_NO_CXX11_CHAR16_T
+    typedef basic_string_view<char16_t, std::char_traits<char16_t> > u16string_view;
+#endif
+
+#ifndef BOOST_NO_CXX11_CHAR32_T
+    typedef basic_string_view<char32_t, std::char_traits<char32_t> > u32string_view;
+#endif
+
+}
+
+#endif

include/boost/utility/typed_in_place_factory.hpp

@@ -0,0 +1,82 @@
+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+// Copyright (C) 2007, Tobias Schwinger.
+//
+// Use, modification, and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  fernando_cacciola@hotmail.com
+//
+#ifndef BOOST_UTILITY_TYPED_INPLACE_FACTORY_04APR2007_HPP
+#ifndef BOOST_PP_IS_ITERATING
+
+#include <boost/utility/detail/in_place_factory_prefix.hpp>
+
+namespace boost {
+
+class typed_in_place_factory_base {} ;
+
+#ifndef BOOST_UTILITY_DOCS
+#define  BOOST_PP_ITERATION_LIMITS (0, BOOST_MAX_INPLACE_FACTORY_ARITY)
+#define  BOOST_PP_FILENAME_1 <boost/utility/typed_in_place_factory.hpp>
+#endif // BOOST_UTILITY_DOCS
+
+#include BOOST_PP_ITERATE()
+} // namespace boost
+
+#include <boost/utility/detail/in_place_factory_suffix.hpp>
+
+#ifndef BOOST_UTILITY_DOCS
+#define BOOST_UTILITY_TYPED_INPLACE_FACTORY_04APR2007_HPP
+#endif // BOOST_UTILITY_DOCS
+
+#else 
+#define N BOOST_PP_ITERATION()
+
+template< class T BOOST_PP_ENUM_TRAILING_PARAMS(N,class A) >
+class BOOST_PP_CAT(typed_in_place_factory,N) 
+  : 
+  public typed_in_place_factory_base
+{
+public:
+
+  typedef T value_type;
+
+  explicit BOOST_PP_CAT(typed_in_place_factory,N) 
+      ( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
+#if N > 0
+    : BOOST_PP_ENUM(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_INIT, _)
+#endif
+  {}
+
+  void* apply (void* address) const
+  {
+    return new(address) T( BOOST_PP_ENUM_PARAMS(N, m_a) );
+  }
+
+  void* apply (void* address, std::size_t n) const
+  {
+    for(void* next = address = this->apply(address); !! --n;)
+      this->apply(next = static_cast<char *>(next) + sizeof(T));
+    return address; 
+  }
+
+  BOOST_PP_REPEAT(N, BOOST_DEFINE_INPLACE_FACTORY_CLASS_MEMBER_DECL, _)
+};
+
+template< class T BOOST_PP_ENUM_TRAILING_PARAMS(N, class A) >
+inline BOOST_PP_CAT(typed_in_place_factory,N)<
+    T BOOST_PP_ENUM_TRAILING_PARAMS(N, A) >
+in_place( BOOST_PP_ENUM_BINARY_PARAMS(N, A, const& a) )
+{
+  return BOOST_PP_CAT(typed_in_place_factory,N)< 
+      T BOOST_PP_ENUM_TRAILING_PARAMS(N, A) >( BOOST_PP_ENUM_PARAMS(N, a) );
+}
+
+#undef N
+#endif
+#endif
+

include/boost/utility/value_init.hpp

@@ -0,0 +1,247 @@
+// (C) Copyright 2002-2008, Fernando Luis Cacciola Carballal.
+// Copyright 2020 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// 21 Ago 2002 (Created) Fernando Cacciola
+// 24 Dec 2007 (Refactored and worked around various compiler bugs) Fernando Cacciola, Niels Dekker
+// 23 May 2008 (Fixed operator= const issue, added initialized_value) Niels Dekker, Fernando Cacciola
+// 21 Ago 2008 (Added swap) Niels Dekker, Fernando Cacciola
+// 20 Feb 2009 (Fixed logical const-ness issues) Niels Dekker, Fernando Cacciola
+// 03 Apr 2010 (Added initialized<T>, suggested by Jeffrey Hellrung, fixing #3472) Niels Dekker
+// 30 May 2010 (Made memset call conditional, fixing #3869) Niels Dekker
+//
+#ifndef BOOST_UTILITY_VALUE_INIT_21AGO2002_HPP
+#define BOOST_UTILITY_VALUE_INIT_21AGO2002_HPP
+
+// Note: The implementation of boost::value_initialized had to deal with the
+// fact that various compilers haven't fully implemented value-initialization.
+// The constructor of boost::value_initialized<T> works around these compiler
+// issues, by clearing the bytes of T, before constructing the T object it
+// contains. More details on these issues are at libs/utility/value_init.htm
+
+#include <boost/config.hpp> // For BOOST_NO_COMPLETE_VALUE_INITIALIZATION.
+#include <boost/core/invoke_swap.hpp>
+#include <cstring>
+#include <cstddef>
+
+#ifdef BOOST_MSVC
+#pragma warning(push)
+// It is safe to ignore the following warning from MSVC 7.1 or higher:
+// "warning C4351: new behavior: elements of array will be default initialized"
+#pragma warning(disable: 4351)
+// It is safe to ignore the following MSVC warning, which may pop up when T is
+// a const type: "warning C4512: assignment operator could not be generated".
+#pragma warning(disable: 4512)
+#endif
+
+#ifndef BOOST_UTILITY_DOCS
+
+#ifdef BOOST_NO_COMPLETE_VALUE_INITIALIZATION
+  // Implementation detail: The macro BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
+  // suggests that a workaround should be applied, because of compiler issues
+  // regarding value-initialization.
+  #define BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
+#endif
+
+// Implementation detail: The macro BOOST_DETAIL_VALUE_INIT_WORKAROUND
+// switches the value-initialization workaround either on or off.
+#ifndef BOOST_DETAIL_VALUE_INIT_WORKAROUND
+  #ifdef BOOST_DETAIL_VALUE_INIT_WORKAROUND_SUGGESTED
+  #define BOOST_DETAIL_VALUE_INIT_WORKAROUND 1
+  #else
+  #define BOOST_DETAIL_VALUE_INIT_WORKAROUND 0
+  #endif
+#endif
+
+#endif // BOOST_UTILITY_DOCS
+
+namespace boost {
+
+namespace detail {
+
+  struct zero_init
+  {
+    zero_init()
+    {
+    }
+
+    zero_init( void * p, std::size_t n )
+    {
+      std::memset( p, 0, n );
+    }
+  };
+
+} // namespace detail
+
+template<class T>
+class initialized
+#if BOOST_DETAIL_VALUE_INIT_WORKAROUND
+  : detail::zero_init
+#endif
+{
+  private:
+
+    T data_;
+
+  public :
+
+    BOOST_GPU_ENABLED
+    initialized():
+#if BOOST_DETAIL_VALUE_INIT_WORKAROUND
+      zero_init( &const_cast< char& >( reinterpret_cast<char const volatile&>( data_ ) ), sizeof( data_ ) ),
+#endif
+      data_()
+    {
+    }
+
+    BOOST_GPU_ENABLED
+    explicit initialized(T const & arg): data_( arg )
+    {
+    }
+
+    BOOST_GPU_ENABLED
+    T const & data() const
+    {
+      return data_;
+    }
+
+    BOOST_GPU_ENABLED
+    T& data()
+    {
+      return data_;
+    }
+
+    BOOST_GPU_ENABLED
+    void swap(initialized & arg)
+    {
+      ::boost::core::invoke_swap( this->data(), arg.data() );
+    }
+
+    BOOST_GPU_ENABLED
+    operator T const &() const
+    {
+      return data_;
+    }
+
+    BOOST_GPU_ENABLED
+    operator T&()
+    {
+      return data_;
+    }
+
+} ;
+
+template<class T>
+BOOST_GPU_ENABLED
+T const& get ( initialized<T> const& x )
+{
+  return x.data() ;
+}
+
+template<class T>
+BOOST_GPU_ENABLED
+T& get ( initialized<T>& x )
+{
+  return x.data() ;
+}
+
+template<class T>
+BOOST_GPU_ENABLED
+void swap ( initialized<T> & lhs, initialized<T> & rhs )
+{
+  lhs.swap(rhs) ;
+}
+
+template<class T>
+class value_initialized
+{
+  private :
+
+    // initialized<T> does value-initialization by default.
+    initialized<T> m_data;
+
+  public :
+
+    BOOST_GPU_ENABLED
+    value_initialized()
+    :
+    m_data()
+    { }
+
+    BOOST_GPU_ENABLED
+    T const & data() const
+    {
+      return m_data.data();
+    }
+
+    BOOST_GPU_ENABLED
+    T& data()
+    {
+      return m_data.data();
+    }
+
+    BOOST_GPU_ENABLED
+    void swap(value_initialized & arg)
+    {
+      m_data.swap(arg.m_data);
+    }
+
+    BOOST_GPU_ENABLED
+    operator T const &() const
+    {
+      return m_data;
+    }
+
+    BOOST_GPU_ENABLED
+    operator T&()
+    {
+      return m_data;
+    }
+} ;
+
+
+template<class T>
+BOOST_GPU_ENABLED
+T const& get ( value_initialized<T> const& x )
+{
+  return x.data() ;
+}
+
+template<class T>
+BOOST_GPU_ENABLED
+T& get ( value_initialized<T>& x )
+{
+  return x.data() ;
+}
+
+template<class T>
+BOOST_GPU_ENABLED
+void swap ( value_initialized<T> & lhs, value_initialized<T> & rhs )
+{
+  lhs.swap(rhs) ;
+}
+
+
+class initialized_value_t
+{
+  public :
+
+    template <class T> BOOST_GPU_ENABLED operator T() const
+    {
+      return initialized<T>().data();
+    }
+};
+
+initialized_value_t const initialized_value = {} ;
+
+
+} // namespace boost
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif

index.htm

@@ -1,72 +0,0 @@
-<html>
-
-<head>
-<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
-<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
-<meta name="ProgId" content="FrontPage.Editor.Document">
-<title>Boost Utility Library</title>
-</head>
-
-<body bgcolor="#FFFFFF" text="#000000">
-
-<table border="1" cellpadding="2" bgcolor="#007F7F">
-  <tr>
-    <td bgcolor="#FFFFFF"><img src="../../c++boost.gif" alt="c++boost.gif (8819 bytes)" width="277" height="86"></td>
-    <td><a href="../../index.htm"><font color="#FFFFFF" size="4" face="Arial">Home</font></a></td>
-    <td><a href="../../libraries.htm"><font color="#FFFFFF" size="4" face="Arial">Libraries</font></a></td>
-    <td><a href="../../people.htm"><font color="#FFFFFF" size="4" face="Arial">People</font></a></td>
-    <td><a href="../../more/faq.htm"><font color="#FFFFFF" size="4" face="Arial">FAQ</font></a></td>
-    <td><a href="../../more/index.htm"><font color="#FFFFFF" size="4" face="Arial">More</font></a></td>
-  </tr>
-</table>
-<h1>Boost Utility Library</h1>
-<table border="1" cellpadding="5">
-  <tr>
-    <td><b><i>Header</i></b></td>
-    <td><b><i>Contents</i></b></td>
-  </tr>
-  <tr>
-    <td><a href="../../boost/utility.hpp"><code>boost/utility.hpp<br>
-      </code></a><a href="utility.htm">[Documentation]</a></td>
-    <td>Class <b>noncopyable</b> plus <b>next()</b> and <b>prior()</b> template
-      functions.</td>
-  </tr>
-  <tr>
-    <td><a href="../../boost/cast.hpp"><code>boost/cast.hpp</code></a><br>
-      <a href="cast.htm">[Documentation]</a></td>
-    <td><b>polymorphic_cast</b>, <b>implicit_cast</b>, and <b>numeric_cast</b>
-      function templates.
-      <p><i>[Beta.]</i></p>
-    </td>
-  </tr>
-  <tr>
-    <td><a href="../../boost/operators.hpp">boost/operators.hpp</a><br>
-      <a href="operators.htm">[Documentation]</a></td>
-    <td>Templates <b>equality_comparable</b>, <b>less_than_comparable</b>, <b>addable</b>,
-      and the like ease the task of defining comparison and arithmetic
-      operators, and iterators.</td>
-  </tr>
-  <tr>
-    <td><a href="../../boost/detail/type_traits.hpp">boost/type_traits.hpp</a><br>
-      [<a href="type_traits.htm">Documentation</a>]</td>
-    <td>Template classes that describe the fundamental properties of a type. [<a href="c++_type_traits.htm">DDJ
-      Article &quot;C++ type traits&quot;</a>]</td>
-  </tr>
-  <tr>
-    <td><a href="../../boost/detail/call_traits.hpp">boost/call_traits.hpp</a><br>
-      [<a href="call_traits.htm">Documentation</a>]</td>
-    <td>Template class call_traits&lt;T&gt;, that defines types used for passing
-      parameters to and from a proceedure.</td>
-  </tr>
-  <tr>
-    <td><a href="../../boost/detail/compressed_pair.hpp">boost/compressed_pair.hpp</a><br>
-      [<a href="compressed_pair.htm">Documentation</a>]</td>
-    <td>Template class compressed_pait&lt;T1, T2&gt; which pairs two values
-      using the empty member optimisation where appropriate.</td>
-  </tr>
-</table>
-<p>Revised <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B %Y" startspan -->27 July 2000<!--webbot bot="Timestamp" endspan i-checksum="18770" --></p>
-
-</body>
-
-</html>

index.html

@@ -0,0 +1,19 @@
+<html>
+<head>
+    <title>Boost.Utility</title>
+    <meta http-equiv="refresh" content="0; URL=./doc/html/index.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="./doc/html/index.html">./doc/html/index.html</a>
+<hr>
+<tt>
+    Boost.Utility<br>
+    <br>
+    Distributed under the Boost Software License, Version 1.0.
+    (See accompanying file LICENSE_1_0.txt or copy at
+    <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+    <br>
+</tt>
+</body>
+</html>

iterator_adaptors.htm

@@ -0,0 +1,19 @@
+<html>
+<head>
+    <title>Boost.Iterator</title>
+    <meta http-equiv="refresh" content="0; URL=../iterator/doc/index.html">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="../iterator/doc/index.html">../iterator/doc/index.html</a>
+<hr>
+<tt>
+    Boost.Iterator<br>
+    <br>
+    Distributed under the Boost Software License, Version 1.0.
+    (See accompanying file LICENSE_1_0.txt or copy at
+    <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+    <br>
+</tt>
+</body>
+</html>

iterators_test.cpp

@@ -1,169 +0,0 @@
-//  Demonstrate and test boost/operators.hpp on std::iterators  --------------//
-
-//  (C) Copyright Jeremy Siek 1999. Permission to copy, use, modify,
-//  sell and distribute this software is granted provided this
-//  copyright notice appears in all copies. This software is provided
-//  "as is" without express or implied warranty, and with no claim as
-//  to its suitability for any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
-
-//  Revision History
-//  12 Dec 99 Initial version with iterator operators (Jeremy Siek)
-
-#include <string>
-#include <iostream>
-using namespace std;
-
-#include <boost/operators.hpp>
-using namespace boost;
-
-
-template <class T, class R, class P>
-struct test_iter
-  : public boost::random_access_iterator_helper<
-     test_iter<T,R,P>, T, std::ptrdiff_t, P, R>
-{
-  typedef test_iter self;
-  typedef R Reference;
-  typedef std::ptrdiff_t Distance;
-
-public:
-  test_iter(T* i) : _i(i) { }
-  test_iter(const self& x) : _i(x._i) { }
-  self& operator=(const self& x) { _i = x._i; return *this; }
-  Reference operator*() const { return *_i; }
-  self& operator++() { ++_i; return *this; }
-  self& operator--() { --_i; return *this; }
-  self& operator+=(Distance n) { _i += n; return *this; }
-  self& operator-=(Distance n) { _i -= n; return *this; }
-  bool operator==(const self& x) const { return _i == x._i; }
-  bool operator<(const self& x) const { return _i < x._i; }
-  friend Distance operator-(const self& x, const self& y) {
-    return x._i - y._i; 
-  }
-protected:
-  T* _i;
-};
-
-
-int
-main()
-{
-  string array[] = { "apple", "orange", "pear", "peach", "grape", "plum"  };
-  {
-    test_iter<string,string&,string*> i = array, 
-      ie = array + sizeof(array)/sizeof(string);
-
-    // Tests for all of the operators added by random_access_iterator_helper
-
-    // test i++
-    while (i != ie)
-      cout << *i++ << " ";
-    cout << endl;
-    i = array;
-
-    // test i--
-    while (ie != i) {
-      ie--;
-      cout << *ie << " ";
-    }
-    cout << endl;
-    ie = array + sizeof(array)/sizeof(string);
-
-    // test i->m
-    while (i != ie) {
-      cout << i->size() << " ";
-      ++i;
-    }
-    cout << endl;
-    i = array;
-
-    // test i + n
-    while (i < ie) {
-      cout << *i << " ";
-      i = i + 2;
-    }
-    cout << endl;
-    i = array;
-
-    // test n + i
-    while (i < ie) {
-      cout << *i << " ";
-      i = ptrdiff_t(2) + i;
-    }
-    cout << endl;
-    i = array;
-
-    // test i - n
-    while (ie > i) {
-      ie = ie - 2;
-      cout << *ie << " ";
-    }
-    cout << endl;
-    ie = array + sizeof(array)/sizeof(string);
-
-    // test i[n]
-    for (std::size_t j = 0; j < sizeof(array)/sizeof(string); ++j)
-      cout << i[j] << " ";
-    cout << endl;
-  }
-  {
-    test_iter<string, const string&, const string*> i = array, 
-      ie = array + sizeof(array)/sizeof(string);
-
-    // Tests for all of the operators added by random_access_iterator_helper
-
-    // test i++
-    while (i != ie)
-      cout << *i++ << " ";
-    cout << endl;
-    i = array;
-
-    // test i--
-    while (ie != i) {
-      ie--;
-      cout << *ie << " ";
-    }
-    cout << endl;
-    ie = array + sizeof(array)/sizeof(string);
-
-    // test i->m
-    while (i != ie) {
-      cout << i->size() << " ";
-      ++i;
-    }
-    cout << endl;
-    i = array;
-
-    // test i + n
-    while (i < ie) {
-      cout << *i << " ";
-      i = i + 2;
-    }
-    cout << endl;
-    i = array;
-
-    // test n + i
-    while (i < ie) {
-      cout << *i << " ";
-      i = ptrdiff_t(2) + i;
-    }
-    cout << endl;
-    i = array;
-
-    // test i - n
-    while (ie > i) {
-      ie = ie - 2;
-      cout << *ie << " ";
-    }
-    cout << endl;
-    ie = array + sizeof(array)/sizeof(string);
-
-    // test i[n]
-    for (std::size_t j = 0; j < sizeof(array)/sizeof(string); ++j)
-      cout << i[j] << " ";
-    cout << endl;
-  }
-  return 0;
-}

meta/libraries.json

@@ -0,0 +1,133 @@
+[
+    {
+        "key": "utility",
+        "name": "Utility",
+        "authors": [
+            "Dave Abrahams and others"
+        ],
+        "description": "Various utilities, such as base-from-member idiom and binary literals in C++03.",
+        "documentation": "utility.htm",
+        "category": [
+            "Miscellaneous",
+            "Patterns"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/call_traits",
+        "name": "Call Traits",
+        "authors": [
+            "John Maddock, Howard Hinnant, et al"
+        ],
+        "description": "Defines types for passing parameters.",
+        "documentation": "call_traits.htm",
+        "category": [
+            "Generic"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/compressed_pair",
+        "name": "Compressed Pair",
+        "authors": [
+            "John Maddock, Howard Hinnant, et al"
+        ],
+        "description": "A pair class with empty member optimization.",
+        "documentation": "compressed_pair.htm",
+        "category": [
+            "Data",
+            "Patterns"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/identity_type",
+        "name": "Identity Type",
+        "authors": [
+            "Lorenzo Caminiti"
+        ],
+        "description": "Wrap types within round parenthesis so they can always be passed as macro parameters.",
+        "documentation": "identity_type/",
+        "category": [
+            "Preprocessor"
+        ],
+        "maintainers": [
+            "Lorenzo Caminiti <lorcaminiti -at- gmail.com>"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/in_place_factories",
+        "name": "In Place Factory, Typed In Place Factory",
+        "authors": [
+            "Fernando Cacciola"
+        ],
+        "description": "Generic in-place construction of contained objects with a variadic argument-list.",
+        "documentation": "in_place_factories.html",
+        "category": [
+            "Generic"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/operators",
+        "name": "Operators",
+        "authors": [
+            "Dave Abrahams",
+            "Jeremy Siek"
+        ],
+        "description": "Templates to simplify operator definition in arithmetic classes and iterators.",
+        "documentation": "operators.htm",
+        "category": [
+            "Generic",
+            "Iterators",
+            "Math"
+        ],
+        "maintainers": [
+            "Daniel Frey <d.frey -at- gmx.de>"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/result_of",
+        "name": "Result Of",
+        "description": "Determines the type of a function call expression.",
+        "documentation": "doc/html/utility/utilities/result_of.html",
+        "category": [
+            "Function-objects"
+        ],
+        "authors": "",
+        "maintainers": [
+            "Daniel Walker <daniel.j.walker -at- gmail.com>"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/string_view",
+        "name": "String View",
+        "description": "String view templates.",
+        "documentation": "doc/html/utility/utilities/string_view.html",
+        "category": [
+            "Containers",
+            "String"
+        ],
+        "authors": "Marshall Clow",
+        "maintainers": [
+            "Marshall Clow <marshall -at- idio.com>"
+        ],
+        "cxxstd": "03"
+    },
+    {
+        "key": "utility/value_initialized",
+        "name": "Value Initialized",
+        "authors": [
+            "Fernando Cacciola"
+        ],
+        "description": "Wrapper for uniform-syntax value initialization, based on the original idea of David Abrahams.",
+        "documentation": "value_init.htm",
+        "category": [
+            "Miscellaneous"
+        ],
+        "cxxstd": "03"
+    }
+]

noncopyable_test.cpp

@@ -1,38 +0,0 @@
-//  boost class noncopyable test program  ------------------------------------//
-
-//  (C) Copyright boost.org 1999. Permission to copy, use, modify, sell
-//  and distribute this software is granted provided this copyright
-//  notice appears in all copies. This software is provided "as is" without
-//  express or implied warranty, and with no claim as to its suitability for
-//  any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
-
-//  Revision History
-//   9 Jun 99  Add unnamed namespace
-//   2 Jun 99  Initial Version
-
-#include <boost/utility.hpp>
-#include <iostream>
-
-//  This program demonstrates compiler errors resulting from trying to copy
-//  construct or copy assign a class object derived from class noncopyable.
-
-namespace
-{
-    class DontTreadOnMe : boost::noncopyable
-    {
-    public:
-         DontTreadOnMe() { std::cout << "defanged!" << std::endl; }
-    };   // DontTreadOnMe
-
-}   // unnamed namespace
-
-int main()
-{
-    DontTreadOnMe object1;
-    DontTreadOnMe object2(object1);
-    object1 = object2;
-    return 0;
-}   // main
-  

operators.htm

@@ -1,598 +1,19 @@
 <html>
-
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
-<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
-<meta name="ProgId" content="FrontPage.Editor.Document">
-<title>Header boost/operators.hpp Documentation</title>
+  <title>Boost.Operators</title>
+  <meta http-equiv="refresh" content="0; URL=./doc/html/utility/utilities/operators.html">
 </head>
-
-<body bgcolor="#FFFFFF" text="#000000">
-
-<h1><img src="../../c++boost.gif" alt="c++boost.gif (8819 bytes)" align="center" width="277" height="86">Header
-<a href="../../boost/operators.hpp">boost/operators.hpp</a></h1>
-<p>Header <a href="http://www.boost.org/boost/operators.hpp">boost/operators.hpp</a>
-supplies (in namespace boost) several sets of templates:</p>
-<ul>
-  <li><a href="#Arithmetic">Arithmetic operators</a>.
-  <li><a href="#deref and helpers">Dereference operators and iterator helpers.</a></li>
-</ul>
-<p>These templates define many global operators in terms of a minimal number of
-fundamental operators.</p>
-<h1><a name="Arithmetic">Arithmetic</a> Operators</h1>
-<p>If, for example, you declare a class like this:</p>
-<blockquote>
-  <pre>class MyInt : boost::operators&lt;MyInt&gt;
-{
-    bool operator&lt;(const MyInt&amp; x) const; 
-    bool operator==(const MyInt&amp; x) const;
-    MyInt&amp; operator+=(const MyInt&amp; x);    
-    MyInt&amp; operator-=(const MyInt&amp; x);    
-    MyInt&amp; operator*=(const MyInt&amp; x);    
-    MyInt&amp; operator/=(const MyInt&amp; x);    
-    MyInt&amp; operator%=(const MyInt&amp; x);    
-    MyInt&amp; operator|=(const MyInt&amp; x);    
-    MyInt&amp; operator&amp;=(const MyInt&amp; x);    
-    MyInt&amp; operator^=(const MyInt&amp; x);    
-    MyInt&amp; operator++();    
-    MyInt&amp; operator--();    
-};</pre>
-</blockquote>
-<p>then the <code>operators&lt;&gt;</code> template adds more than a dozen
-additional operators, such as operator&gt;, &lt;=, &gt;=, and +.&nbsp; <a href="#two_arg">Two-argument
-forms</a> of the templates are also provided to allow interaction with other
-types.</p>
-<p><a href="http://www.boost.org/people/dave_abrahams.htm">Dave Abrahams</a>
-started the library and contributed the arithmetic operators in <a href="http://www.boost.org/boost/operators.hpp">boost/operators.hpp</a>.<br>
-<a href="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</a>
-contributed the <a href="#deref and helpers">dereference operators and iterator
-helpers</a> in <a href="http://www.boost.org/boost/operators.hpp">boost/operators.hpp</a>.<br>
-<a href="http://www.boost.org/people/aleksey_gurtovoy.htm">Aleksey Gurtovoy</a>
-contributed the code to support <a href="#chaining">base class chaining</a>
-while remaining backward-compatible with old versions of the library.<br>
-<a href="http://www.boost.org/people/beman_dawes.html">Beman Dawes</a>
-contributed <a href="http://www.boost.org/libs/utility/operators_test.cpp">test_operators.cpp</a>.</p>
-<h2>Rationale</h2>
-<p>Overloaded operators for class types typically occur in groups. If you can
-write <code>x + y</code>, you probably also want to be able to write <code>x +=
-y</code>. If you can write <code>x &lt; y,</code> you also want <code>x &gt; y,
-x &gt;= y,</code> and <code>x &lt;= y</code>. Moreover, unless your class has
-really surprising behavior, some of these related operators can be defined in
-terms of others (e.g. <code>x &gt;= y <b>&lt;=&gt;</b> !(x &lt; y)</code>).
-Replicating this boilerplate for multiple classes is both tedious and
-error-prone. The <a href="http://www.boost.org/boost/operators.hpp">boost/operators.hpp</a>
-templates help by generating operators for you at namespace scope based on other
-operators you've defined in your class.</p>
-<a name="two_arg">
-<h2>Two-Argument Template Forms</h2>
-</a>
-<p>The arguments to a binary operator commonly have identical types, but it is
-not unusual to want to define operators which combine different types. For <a href="#usage">example</a>,
-one might want to multiply a mathematical vector by a scalar. The two-argument
-template forms of the arithmetic operator templates are supplied for this
-purpose. When applying the two-argument form of a template, the desired return
-type of the operators typically determines which of the two types in question
-should be derived from the operator template. For example, if the result of <code>T&nbsp;+&nbsp;U</code>
-is of type <code>T</code>, then <code>T</code> (not <code>U</code>) should be
-derived from <code>addable&lt;T,U&gt;</code>. The comparison templates <code><a href="#less_than_comparable">less_than_comparable&lt;&gt;</a></code>
-and <code><a href="#equality_comparable">equality_comparable&lt;&gt;</a></code>
-are exceptions to this guideline, since the return type of the operators they
-define is <code>bool</code>.</p>
-<p>On compilers which do not support partial specialization, the two-argument
-forms must be specified by using the names shown below with the trailing <code>'2'</code>.
-The single-argument forms with the trailing <code>'1'</code> are provided for
-symmetry and to enable certain applications of the <a href="#chaining">base
-class chaining</a> technique.</p>
-<h2>Arithmetic operators table</h2>
-<p>The requirements for the types used to instantiate operator templates are
-specified in terms of expressions which must be valid and by the return type of
-the expression. In the following table <code>t</code> and <code>t1</code> are
-values of type <code>T</code>, and <code>u</code> is a value of type <code>U</code>.
-Every template in the library other than <a href="#operators"><code>operators&lt;&gt;</code></a>
-and <a href="#operators"><code>operators2&lt;&gt;</code></a> has an additional
-optional template parameter <code>B</code> which is not shown in the table, but
-is explained <a href="#chaining">below</a></p>
-<table cellpadding="5" border="1">
-  <tbody>
-    <tr>
-      <td><b>template</b></td>
-      <td><b>template will supply</b></td>
-      <td><b>Requirements</b></td>
-    </tr>
-    <a name="operators">
-    <tr>
-      <td><code>operators&lt;T&gt;</code></td>
-      <td>All the other &lt;T&gt; templates in this table.</td>
-      <td>All the &lt;T&gt; requirements in this table.</td>
-    <tr>
-      <td><code>operators&lt;T,U&gt;<br>
-        operators2&lt;T,U&gt;</code></td>
-      <td>All the other &lt;T,U&gt; templates in this table, plus incrementable&lt;T&gt;
-        and decrementable&lt;T&gt;.</td>
-      <td><b>All</b> the &lt;T,U&gt; requirements in this table</a><a href="#portability">*</a>,
-      plus incrementable&lt;T&gt; and decrementable&lt;T&gt;.</td>
-    </tr>
-    <a name="less_than_comparable">
-    <tr>
-      <td><code>less_than_comparable&lt;T&gt;<br>
-        less_than_comparable1&lt;T&gt;</code></td>
-      <td><code>bool operator&gt;(const T&amp;, const T&amp;)&nbsp;<br>
-        bool operator&lt;=(const T&amp;, const T&amp;)<br>
-        bool operator&gt;=(const T&amp;, const T&amp;)</code></td>
-      <td><code>t&lt;t1</code>. Return convertible to bool</td>
-    <tr>
-      <td><code>less_than_comparable&lt;T,U&gt;<br>
-        less_than_comparable2&lt;T,U&gt;</code></td>
-      <td><code>bool operator&lt;=(const T&amp;, const U&amp;)<br>
-        bool operator&gt;=(const T&amp;, const U&amp;)<br>
-        bool operator&gt;(const U&amp;, const T&amp;)&nbsp;<br>
-        bool operator&lt;(const U&amp;, const T&amp;)&nbsp;<br>
-        bool operator&lt;=(const U&amp;, const T&amp;)<br>
-        bool operator&gt;=(const U&amp;, const T&amp;)</code></td>
-      <td><code>t&lt;u</code>. Return convertible to bool<br>
-        <code>t&gt;u</code>. Return convertible to bool</td>
-    </tr>
-    </a><a name="equality_comparable">
-    <tr>
-      <td><code>equality_comparable&lt;T&gt;<br>
-        equality_comparable1&lt;T&gt;</code></td>
-      <td><code>bool operator!=(const T&amp;, const T&amp;)</code></td>
-      <td><code>t==t1</code>. Return convertible to bool</td>
-    <tr>
-      <td><code>equality_comparable&lt;T,U&gt;<br>
-        equality_comparable2&lt;T,U&gt;</code></td>
-      <td><code>friend bool operator==(const U&amp;, const T&amp;)<br>
-        friend bool operator!=(const U&amp;, const T&amp;)<br>
-        friend bool operator!=( const T&amp;, const U&amp;)</code></td>
-      <td><code>t==u</code>. Return convertible to bool</td>
-    </tr>
-    </a>
-    <tr>
-      <td><code>addable&lt;T&gt;<br>
-        addable1&lt;T&gt;</code></td>
-      <td><code>T operator+(T, const T&amp;)</code></td>
-      <td><code>t+=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>addable&lt;T,U&gt;<br>
-        addable2&lt;T,U&gt;</code></td>
-      <td><code>T operator+(T, const U&amp;)<br>
-        T operator+(const U&amp;, T )</code></td>
-      <td><code>t+=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>subtractable&lt;T&gt;<br>
-        subtractable1&lt;T&gt;</code></td>
-      <td><code>T operator-(T, const T&amp;)</code></td>
-      <td><code>t-=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>subtractable&lt;T,U&gt;<br>
-        subtractable2&lt;T,U&gt;</code></td>
-      <td><code>T operator-(T, const U&amp;)</code></td>
-      <td><code>t-=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>multipliable&lt;T&gt;<br>
-        multipliable1&lt;T&gt;</code></td>
-      <td><code>T operator*(T, const T&amp;)</code></td>
-      <td><code>t*=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>multipliable&lt;T,U&gt;<br>
-        multipliable2&lt;T,U&gt;</code></td>
-      <td><code>T operator*(T, const U&amp;)<br>
-        T operator*(const U&amp;, T )</code></td>
-      <td><code>t*=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>dividable&lt;T&gt;<br>
-        dividable1&lt;T&gt;</code></td>
-      <td><code>T operator/(T, const T&amp;)</code></td>
-      <td><code>t/=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>dividable&lt;T,U&gt;<br>
-        dividable2&lt;T,U&gt;</code></td>
-      <td><code>T operator/(T, const U&amp;)</code></td>
-      <td><code>t/=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>modable&lt;T&gt;<br>
-        modable1&lt;T&gt;</code></td>
-      <td><code>T operator%(T, const T&amp;)</code></td>
-      <td><code>t%=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>modable&lt;T,U&gt;<br>
-        modable2&lt;T,U&gt;</code></td>
-      <td><code>T operator%(T, const U&amp;)</code></td>
-      <td><code>t%=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>orable&lt;T&gt;<br>
-        orable1&lt;T&gt;</code></td>
-      <td><code>T operator|(T, const T&amp;)</code></td>
-      <td><code>t|=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>orable&lt;T,U&gt;<br>
-        orable2&lt;T,U&gt;</code></td>
-      <td><code>T operator|(T, const U&amp;)<br>
-        T operator|(const U&amp;, T )</code></td>
-      <td><code>t|=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>andable&lt;T&gt;<br>
-        andable1&lt;T&gt;</code></td>
-      <td><code>T operator&amp;(T, const T&amp;)</code></td>
-      <td><code>t&amp;=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>andable&lt;T,U&gt;<br>
-        andable2&lt;T,U&gt;</code></td>
-      <td><code>T operator&amp;(T, const U&amp;)<br>
-        T operator&amp;(const U&amp;, T)</code></td>
-      <td><code>t&amp;=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>xorable&lt;T&gt;<br>
-        xorable1&lt;T&gt;</code></td>
-      <td><code>T operator^(T, const T&amp;)</code></td>
-      <td><code>t^=t1</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>xorable&lt;T,U&gt;<br>
-        xorable2&lt;T,U&gt;</code></td>
-      <td><code>T operator^(T, const U&amp;)<br>
-        T operator^(const U&amp;, T )</code></td>
-      <td><code>t^=u</code>. Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>incrementable&lt;T&gt;<br>
-        incrementable1&lt;T&gt;</code></td>
-      <td><code>T operator++(T&amp; x, int)</code></td>
-      <td><code>T temp(x); ++x; return temp;</code><br>
-        Return convertible to <code>T</code></td>
-    </tr>
-    <tr>
-      <td><code>decrementable&lt;T&gt;<br>
-        decrementable1&lt;T&gt;</code></td>
-      <td><code>T operator--(T&amp; x, int)</code></td>
-      <td><code>T temp(x); --x; return temp;</code><br>
-        Return convertible to <code>T</code></td>
-    </tr>
-  </tbody>
-</table>
-<br>
-<b><a name="portability">Portability Note:</a></b> many compilers (e.g. MSVC6.3,
-GCC 2.95.2) will not enforce the requirements in this table unless the
-operations which depend on them are actually used. This is not
-standard-conforming behavior. If you are trying to write portable code it is
-important not to rely on this bug. In particular, it would be convenient to
-derive all your classes which need binary operators from the <a href="#operators"><code>operators&lt;&gt;</code></a>
-and <a href="#operators"><code>operators2&lt;&gt;</code></a> templates,
-regardless of whether they implement all the requirements in the table. Even if
-this works with your compiler today, it may not work tomorrow.
-<h2><a name="chaining">Base Class Chaining</a> and Object Size</h2>
-<p>Every template listed in the table except <a href="#operators"><code>operators&lt;&gt;</code></a>
-and <a href="#operators"><code>operators2&lt;&gt;</code></a> has an additional
-optional template parameter <code>B</code>.&nbsp; If supplied, <code>B</code>
-must be a class type; the resulting class will be publicly derived from B. This
-can be used to avoid the object size bloat commonly associated with multiple
-empty base classes (see the <a href="#old_lib_note">note for users of older
-versions</a> below for more details). To provide support for several groups of
-operators, use the additional parameter to chain operator templates into a
-single-base class hierarchy, as in the following <a href="#usage">example</a>.</p>
-<p><b>Caveat:</b> to chain to a base class which is <i>not</i> a boost operator
-template when using the <a href="#two_arg">single-argument form</a><a> of a
-boost operator template, you must specify the operator template with the
-trailing <code>'1'</code> in its name. Otherwise the library will assume you
-mean to define a binary operation combining the class you intend to use as a
-base class and the class you're deriving.</p>
-<p><b>Borland users</b>: even single-inheritance seems to cause an increase in
-object size in some cases. If you are not defining a template, you may get
-better object-size performance by avoiding derivation altogether, and instead
-explicitly instantiating the operator template as follows:
-<pre>
-    class myclass // lose the inheritance...
-    {
-        //...
-    };
-    // explicitly instantiate the operators I need.
-    template class less_than_comparable&lt;myclass&gt;;
-    template class equality_comparable&lt;myclass&gt;;
-    template class incrementable&lt;myclass&gt;;
-    template class decrementable&lt;myclass&gt;;
-    template class addable&lt;myclass,long&gt;;
-    template class subtractable&lt;myclass,long&gt;;
-</pre>
-</a><a name="usage">
-<h2>Usage example</h2>
-</a>
-<pre>template &lt;class T&gt;
-class point    // note: private inheritance is OK here!
-    : boost::addable&lt; point&lt;T&gt;          // point + point
-    , boost::subtractable&lt; point&lt;T&gt;     // point - point
-    , boost::dividable2&lt; point&lt;T&gt;, T    // point / T
-    , boost::multipliable2&lt; point&lt;T&gt;, T // point * T, T * point
-      &gt; &gt; &gt; &gt;
-{
-public:
-    point(T, T);
-    T x() const;
-    T y() const;
-
-    point operator+=(const point&amp;);
-    // point operator+(point, const point&amp;) automatically
-    // generated by addable.
-
-    point operator-=(const point&amp;);
-    // point operator-(point, const point&amp;) automatically
-    // generated by subtractable.
-
-    point operator*=(T);
-    // point operator*(point, const T&amp;) and
-    // point operator*(const T&amp;, point) auto-generated
-    // by multipliable.
-
-    point operator/=(T);
-    // point operator/(point, const T&amp;) auto-generated
-    // by dividable.
-private:
-    T x_;
-    T y_;
-};
-
-// now use the point&lt;&gt; class:
-
-template &lt;class T&gt;
-T length(const point&lt;T&gt; p)
-{
-    return sqrt(p.x()*p.x() + p.y()*p.y());
-}
-
-const point&lt;float&gt; right(0, 1);
-const point&lt;float&gt; up(1, 0);
-const point&lt;float&gt; pi_over_4 = up + right;
-const point&lt;float&gt; pi_over_4_normalized = pi_over_4 / length(pi_over_4);</pre>
-<h2>Arithmetic operators demonstration and test program</h2>
-<p>The <a href="http://www.boost.org/libs/utility/operators_test.cpp">operators_test.cpp</a>
-program demonstrates the use of the arithmetic operator templates, and can also
-be used to verify correct operation.</p>
-<p>The test program has been compiled and run successfully with:&nbsp;</p>
-<ul>
-  <li>GCC 2.95.2
-  <li>GCC 2.95.2 / STLport 4.0b8.
-  <li>Metrowerks Codewarrior 5.3
-  <li>KAI C++ 3.3
-  <li>Microsoft Visual C++ 6.0 SP3.
-  <li>Microsoft Visual C++ 6.0 SP3 / STLport 4.0b8.</li>
-</ul>
-<h1><a name="deref and helpers">Dereference</a> operators and iterator helpers</h1>
-<p>The <a href="#Iterator helpers">iterator helper</a> templates ease the task
-of creating a custom iterator. Similar to arithmetic types, a complete iterator
-has many operators that are &quot;redundant&quot; and can be implemented in
-terms of the core set of operators.</p>
-<p>The <a href="#dereference">dereference operators</a> were motivated by the <a href="#Iterator helpers">iterator
-helpers</a>, but are often useful in non-iterator contexts as well. Many of the
-redundant iterator operators are also arithmetic operators, so the iterator
-helper classes borrow many of the operators defined above. In fact, only two new
-operators need to be defined! (the pointer-to-member <code>operator-&gt;</code>
-and the subscript <code>operator[]</code>). </PP>
-<h3>Notation</h3>
-<table>
-  <tbody>
-    <tr>
-      <td valign="top"><code>T</code></td>
-      <td valign="top">is the user-defined type for which the operations are
-        being supplied.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>V</code></td>
-      <td valign="top">is the type which the resulting <code>dereferenceable</code>
-        type &quot;points to&quot;, or the <code>value_type</code> of the custom
-        iterator.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>D</code></td>
-      <td valign="top">is the type used to index the resulting <code>indexable</code>
-        type or the <code>difference_type</code> of the custom iterator.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>P</code></td>
-      <td valign="top">is a type which can be dereferenced to access <code>V</code>,
-        or the <code>pointer</code> type of the custom iterator.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>R</code></td>
-      <td valign="top">is the type returned by indexing the <code>indexable</code>
-        type or the <code>reference</code> type of the custom iterator.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>i</code></td>
-      <td valign="top">is short for <code>static_cast&lt;const T&amp;&gt;(*this)</code>,
-        where <code>this</code> is a pointer to the helper class.<br>
-        Another words, <code>i</code> should be an object of the custom iterator
-        type.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>x,x1,x2</code></td>
-      <td valign="top">are objects of type <code>T</code>.</td>
-    </tr>
-    <tr>
-      <td valign="top"><code>n</code></td>
-      <td valign="top">is an object of type <code>D</code>.</td>
-    </tr>
-  </tbody>
-</table>
-<p>The requirements for the types used to instantiate the dereference operators
-and iterator helpers are specified in terms of expressions which must be valid
-and their return type.&nbsp;</p>
-<h2><a name="dereference">Dereference operators</a></h2>
-<p>The dereference operator templates in this table all accept an optional
-template parameter (not shown) to be used for <a href="#chaining">base class
-chaining</a>.
-<table cellpadding="5" border="1">
-  <tbody>
-    <tr>
-      <td><b>template</b></td>
-      <td><b>template will supply</b></td>
-      <td><b>Requirements</b></td>
-    </tr>
-    <tr>
-      <td><code>dereferenceable&lt;T,P&gt;</code></td>
-      <td><code>P operator-&gt;() const</code></td>
-      <td><code>(&amp;*i.)</code>. Return convertible to <code>P</code>.</td>
-    </tr>
-    <tr>
-      <td><code>indexable&lt;T,D,R&gt;</code></td>
-      <td><code>R operator[](D n) const</code></td>
-      <td><code>*(i + n)</code>. Return of type <code>R</code>.</td>
-    </tr>
-  </tbody>
-</table>
-<h2><a name="Iterator helpers">Iterator</a> helpers</h2>
-<p>There are three separate iterator helper classes, each for a different
-category of iterator. Here is a summary of the core set of operators that the
-custom iterator must define, and the extra operators that are created by the
-helper classes. For convenience, the helper classes also fill in all of the
-typedef's required of iterators by the C++ standard (<code>iterator_category</code>,
-<code>value_type</code>, etc.).</p>
-<table cellpadding="5" border="1" valign="top">
-  <tbody>
-    <tr>
-      <td><b>template</b></td>
-      <td><b>template will supply</b></td>
-      <td><b>Requirements</b></td>
-    </tr>
-    <tr>
-      <td><code>forward_iterator_helper</code><br>
-        <code>&lt;T,V,D,P,R&gt;</code></td>
-      <td><code>bool operator!=(const T&amp; x1, const T&amp; x2)</code><br>
-        <code>T operator++(T&amp; x, int)</code><br>
-        <code>V* operator-&gt;() const</code><br>
-      </td>
-      <td><code>x1==x2</code>. Return convertible to bool<br>
-        <code>T temp(x); ++x; return temp;</code><br>
-        <code>(&amp;*i.)</code>. Return convertible to <code>V*</code>.</td>
-    </tr>
-    <tr>
-      <td><code>bidirectional_iterator_helper</code><br>
-        <code>&lt;T,V,D,P,R&gt;</code></td>
-      <td>Same as above, plus<br>
-        <code>T operator--(T&amp; x, int)</code></td>
-      <td>Same as above, plus<br>
-        <code>T temp(x); --x; return temp;</code></td>
-    </tr>
-    <tr>
-      <td><code>random_access_iterator_helper</code><br>
-        <code>&lt;T,V,D,P,R&gt;</code></td>
-      <td>Same as above, plus<br>
-        <code>T operator+(T x, const D&amp;)<br>
-        T operator+(const D&amp; n, T x)<br>
-        T operator-(T x, const D&amp; n)<br>
-        R operator[](D n) const<br>
-        bool operator&gt;(const T&amp; x1, const T&amp; x2)&nbsp;<br>
-        bool operator&lt;=(const T&amp; x1, const T&amp; x2)<br>
-        bool operator&gt;=(const T&amp; x1, const T&amp; x2)</code></td>
-      <td>Same as above, plus<br>
-        <code>x+=n</code>. Return convertible to <code>T</code><br>
-        <code>x-=n</code>. Return convertible to <code>T</code><br>
-        <code>x1&lt;x2</code>. Return convertible to bool<br>
-        And to satisfy <a href="http://www.sgi.com/Technology/STL/RandomAccessIterator.html">RandomAccessIterator</a>:<br>
-        <code>x1-x2</code>. Return convertible to <code>D</code></td>
-    </tr>
-  </tbody>
-</table>
-<h2>Iterator demonstration and test program</h2>
-<p>The <a href="http://www.boost.org/libs/utility/iterators_test.cpp">iterators_test.cpp</a>
-program demonstrates the use of the iterator templates, and can also be used to
-verify correct operation. The following is the custom iterator defined in the
-test program. It demonstrates a correct (though trivial) implementation of the
-core operations that must be defined in order for the iterator helpers to
-&quot;fill in&quot; the rest of the iterator operations.</p>
-<blockquote>
-  <pre>template &lt;class T, class R, class P&gt;
-struct test_iter
-  : public boost::random_access_iterator_helper&lt;
-     test_iter&lt;T,R,P&gt;, T, std::ptrdiff_t, P, R&gt;
-{
-  typedef test_iter self;
-  typedef R Reference;
-  typedef std::ptrdiff_t Distance;
-
-public:
-  test_iter(T* i) : _i(i) { }
-  test_iter(const self&amp; x) : _i(x._i) { }
-  self&amp; operator=(const self&amp; x) { _i = x._i; return *this; }
-  Reference operator*() const { return *_i; }
-  self&amp; operator++() { ++_i; return *this; }
-  self&amp; operator--() { --_i; return *this; }
-  self&amp; operator+=(Distance n) { _i += n; return *this; }
-  self&amp; operator-=(Distance n) { _i -= n; return *this; }
-  bool operator==(const self&amp; x) const { return _i == x._i; }
-  bool operator&lt;(const self&amp; x) const { return _i &lt; x._i; }
-  friend Distance operator-(const self&amp; x, const self&amp; y) {
-    return x._i - y._i; 
-  }
-protected:
-  T* _i;
-};</pre>
-</blockquote>
-<p>It has been compiled and run successfully with:</p>
-<ul>
-  <li>GCC 2.95.2
-  <li>Metrowerks Codewarrior 5.2
-  <li>Microsoft Visual C++ 6.0 SP3</li>
-</ul>
-<p><a href="http://www.boost.org/people/jeremy_siek.htm">Jeremy Siek</a>
-contributed the iterator operators and helpers.&nbsp; He also contributed <a href="http://www.boost.org/libs/utility/iterators_test.cpp">iterators_test.cpp</a>.&nbsp;</p>
+<body>
+Automatic redirection failed, please go to
+<a href="./doc/html/utility/utilities/operators.html">./doc/html/utility/utilities/operators.html</a>
 <hr>
-<h2><a name="old_lib_note">Note for users of older versions</a></h2>
-<p>The <a href="#chaining">changes in the library interface and recommended
-usage</a> were motivated by some practical issues described below. The new
-version of the library is still backward-compatible with the former one (so
-you're not <i>forced</i> change any existing code), but the old usage is
-deprecated. Though it was arguably simpler and more intuitive than using <a href="#chaining">base
-class chaining</a>, it has been discovered that the old practice of deriving
-from multiple operator templates can cause the resulting classes to be much
-larger than they should be. Most modern C++ compilers significantly bloat the
-size of classes derived from multiple empty base classes, even though the base
-classes themselves have no state. For instance, the size of <code>point&lt;int&gt;</code>
-from the <a href="#usage">example</a> above was 12-24 bytes on various compilers
-for the Win32 platform, instead of the expected 8 bytes.
-<p>Strictly speaking, it was not the library's fault - the language rules allow
-the compiler to apply the empty base class optimization in that situation. In
-principle an arbitrary number of empty base classes can be allocated at the same
-offset, provided that none of them have a common ancestor (see section 10.5 [class.derived],
-par. 5 of the standard). But the language definition also doesn't <i>require</i>
-implementations to do the optimization, and few if any of today's compilers
-implement it when multiple inheritance is involved. What's worse, it is very
-unlikely that implementors will adopt it as a future enhancement to existing
-compilers, because it would break binary compatibility between code generated by
-two different versions of the same compiler. As Matt Austern said, &quot;One of
-the few times when you have the freedom to do this sort of thing is when you're
-targeting a new architecture...&quot;. On the other hand, many common compilers
-will use the empty base optimization for single inheritance hierarchies.</p>
-<p>Given the importance of the issue for the users of the library (which aims to
-be useful for writing light-weight classes like <code>MyInt</code> or <code>point&lt;&gt;</code>),
-and the forces described above, we decided to change the library interface so
-that the object size bloat could be eliminated even on compilers that support
-only the simplest form of the empty base class optimization. The current library
-interface is the result of those changes. Though the new usage is a bit more
-complicated than the old one, we think it's worth it to make the library more
-useful in real world. Alexy Gurtovoy contributed the code which supports the new
-usage idiom while allowing the library remain backward-compatible.</p>
-<hr>
-<p>Revised <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %b %Y" startspan -->28 Jun 2000<!--webbot bot="Timestamp" endspan i-checksum="15058" -->
-</p>
-<p><EFBFBD> Copyright David Abrahams and Beman Dawes 1999-2000. Permission to copy,
-use, modify, sell and distribute this document is granted provided this
-copyright notice appears in all copies. This document is provided &quot;as
-is&quot; without express or implied warranty, and with no claim as to its
-suitability for any purpose.</p>
-
+<tt>
+  Boost.Operators<br>
+  <br>
+  Distributed under the Boost Software License, Version 1.0.
+  (See accompanying file LICENSE_1_0.txt or copy at
+  <a href=http://www.boost.org/LICENSE_1_0.txt>http://www.boost.org/LICENSE_1_0.txt</a>) <br>
+  <br>
+</tt>
 </body>
-
 </html>

operators_test.cpp

@@ -1,481 +0,0 @@
-//  Demonstrate and test boost/operators.hpp  -------------------------------//
-
-//  (C) Copyright Beman Dawes 1999. Permission to copy, use, modify, sell and
-//  distribute this software is granted provided this copyright notice appears
-//  in all copies. This software is provided "as is" without express or implied
-//  warranty, and with no claim as to its suitability for any purpose.
-
-//  See http://www.boost.org for most recent version including documentation.
-
-//  Revision History
-//  04 Jun 00 Added regression test for a bug I found (David Abrahams)
-//  17 Jun 00 Fix for broken compilers (Aleksey Gurtovoy)
-//  ?? ??? 00 Major update to randomly test all one- and two- argument forms by
-//            wrapping integral types and comparing the results of operations to
-//            the results for the raw types (David Abrahams)
-//  12 Dec 99 Minor update, output confirmation message.
-//  15 Nov 99 Initial version
-
-#include <boost/operators.hpp>
-#include <cassert>
-#include <iostream>
-#include <boost/min_rand.hpp>
-
-
-namespace
-{
-    // avoiding a template version of true_value so as to not confuse VC++
-    int true_value(int x) { return x; }
-    long true_value(long x) { return x; }
-    signed char true_value(signed char x) { return x; }
-    unsigned int true_value(unsigned int x) { return x; }
-    unsigned long true_value(unsigned long x) { return x; }
-    unsigned char true_value(unsigned char x) { return x; }
-
-    // The use of operators<> here tended to obscure interactions with certain
-    // compiler bugs
-    template <class T>
-    class Wrapped1 : boost::operators<Wrapped1<T> >
-    {
-    public:
-        explicit Wrapped1( T v = T() ) : _value(v) {}
-        T value() const { return _value; }
-
-        bool operator<(const Wrapped1& x) const { return _value < x._value; }
-        bool operator==(const Wrapped1& x) const { return _value == x._value; }
-        
-        Wrapped1& operator+=(const Wrapped1& x)
-          { _value += x._value; return *this; }
-        Wrapped1& operator-=(const Wrapped1& x)
-          { _value -= x._value; return *this; }
-        Wrapped1& operator*=(const Wrapped1& x)
-          { _value *= x._value; return *this; }
-        Wrapped1& operator/=(const Wrapped1& x)
-          { _value /= x._value; return *this; }
-        Wrapped1& operator%=(const Wrapped1& x)
-          { _value %= x._value; return *this; }
-        Wrapped1& operator|=(const Wrapped1& x)
-          { _value |= x._value; return *this; }
-        Wrapped1& operator&=(const Wrapped1& x)
-          { _value &= x._value; return *this; }
-        Wrapped1& operator^=(const Wrapped1& x)
-          { _value ^= x._value; return *this; }
-        Wrapped1& operator++()               { ++_value; return *this; }
-        Wrapped1& operator--()               { --_value; return *this; }
-        
-    private:
-        T _value;
-    };
-    template <class T>
-    T true_value(Wrapped1<T> x) { return x.value(); }    
-
-    template <class T, class U>
-    class Wrapped2 :
-        boost::operators<Wrapped2<T, U> >,
-        boost::operators2<Wrapped2<T, U>, U>
-    {
-    public:
-        explicit Wrapped2( T v = T() ) : _value(v) {}
-        T value() const { return _value; }
-
-        bool operator<(const Wrapped2& x) const { return _value < x._value; }
-        bool operator==(const Wrapped2& x) const { return _value == x._value; }
-        
-        Wrapped2& operator+=(const Wrapped2& x)
-          { _value += x._value; return *this; }
-        Wrapped2& operator-=(const Wrapped2& x)
-          { _value -= x._value; return *this; }
-        Wrapped2& operator*=(const Wrapped2& x)
-          { _value *= x._value; return *this; }
-        Wrapped2& operator/=(const Wrapped2& x)
-          { _value /= x._value; return *this; }
-        Wrapped2& operator%=(const Wrapped2& x)
-          { _value %= x._value; return *this; }
-        Wrapped2& operator|=(const Wrapped2& x)
-          { _value |= x._value; return *this; }
-        Wrapped2& operator&=(const Wrapped2& x)
-          { _value &= x._value; return *this; }
-        Wrapped2& operator^=(const Wrapped2& x)
-          { _value ^= x._value; return *this; }
-        Wrapped2& operator++()                { ++_value; return *this; }
-        Wrapped2& operator--()                { --_value; return *this; }
-         
-        bool operator<(U u) const { return _value < u; }
-        bool operator>(U u) const { return _value > u; }
-        bool operator==(U u) const { return _value == u; }
-        Wrapped2& operator+=(U u) { _value += u; return *this; }
-        Wrapped2& operator-=(U u) { _value -= u; return *this; }
-        Wrapped2& operator*=(U u) { _value *= u; return *this; }
-        Wrapped2& operator/=(U u) { _value /= u; return *this; }
-        Wrapped2& operator%=(U u) { _value %= u; return *this; }
-        Wrapped2& operator|=(U u) { _value |= u; return *this; }
-        Wrapped2& operator&=(U u) { _value &= u; return *this; }
-        Wrapped2& operator^=(U u) { _value ^= u; return *this; }
-
-    private:
-        T _value;
-    };
-    template <class T, class U>
-    T true_value(Wrapped2<T,U> x) { return x.value(); }
-    
-    //  MyInt uses only the single template-argument form of all_operators<>
-    typedef Wrapped1<int> MyInt;
-
-    typedef Wrapped2<long, long> MyLong;
-
-    template <class X1, class Y1, class X2, class Y2>
-    void sanity_check(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert(true_value(y1) == true_value(y2));
-        assert(true_value(x1) == true_value(x2));
-    }
-
-    template <class X1, class Y1, class X2, class Y2>
-    void test_less_than_comparable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 < y1) == (x2 < y2));
-        assert((x1 <= y1) == (x2 <= y2));
-        assert((x1 >= y1) == (x2 >= y2));
-        assert((x1 > y1) == (x2 > y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_less_than_comparable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_less_than_comparable_aux(x1, y1, x2, y2);
-        test_less_than_comparable_aux(y1, x1, y2, x2);
-    }
-
-    template <class X1, class Y1, class X2, class Y2>
-    void test_equality_comparable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 == y1) == (x2 == y2));
-        assert((x1 != y1) == (x2 != y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_equality_comparable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_equality_comparable_aux(x1, y1, x2, y2);
-        test_equality_comparable_aux(y1, x1, y2, x2);
-    }
-
-    template <class X1, class Y1, class X2, class Y2>
-    void test_multipliable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 * y1).value() == (x2 * y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_multipliable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_multipliable_aux(x1, y1, x2, y2);
-        test_multipliable_aux(y1, x1, y2, x2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_addable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 + y1).value() == (x2 + y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_addable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_addable_aux(x1, y1, x2, y2);
-        test_addable_aux(y1, x1, y2, x2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_subtractable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        assert((x1 - y1).value() == x2 - y2);
-    }
-
-    template <class X1, class Y1, class X2, class Y2>
-    void test_dividable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        if (y2 != 0)
-            assert((x1 / y1).value() == x2 / y2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_modable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        if (y2 != 0)
-            assert((x1 / y1).value() == x2 / y2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_xorable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 ^ y1).value() == (x2 ^ y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_xorable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_xorable_aux(x1, y1, x2, y2);
-        test_xorable_aux(y1, x1, y2, x2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_andable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 & y1).value() == (x2 & y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_andable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_andable_aux(x1, y1, x2, y2);
-        test_andable_aux(y1, x1, y2, x2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_orable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        assert((x1 | y1).value() == (x2 | y2));
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_orable(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        sanity_check(x1, y1, x2, y2);
-        test_orable_aux(x1, y1, x2, y2);
-        test_orable_aux(y1, x1, y2, x2);
-    }
-    
-    template <class X1, class X2>
-    void test_incrementable(X1 x1, X2 x2)
-    {
-        sanity_check(x1, x1, x2, x2);
-        assert(x1++.value() == x2++);
-        assert(x1.value() == x2);
-    }
-    
-    template <class X1, class X2>
-    void test_decrementable(X1 x1, X2 x2)
-    {
-        sanity_check(x1, x1, x2, x2);
-        assert(x1--.value() == x2--);
-        assert(x1.value() == x2);
-    }
-    
-    template <class X1, class Y1, class X2, class Y2>
-    void test_all(X1 x1, Y1 y1, X2 x2, Y2 y2)
-    {
-        test_less_than_comparable(x1, y1, x2, y2);
-        test_equality_comparable(x1, y1, x2, y2);
-        test_multipliable(x1, y1, x2, y2);
-        test_addable(x1, y1, x2, y2);
-        test_subtractable(x1, y1, x2, y2);
-        test_dividable(x1, y1, x2, y2);
-        test_modable(x1, y1, x2, y2);
-        test_xorable(x1, y1, x2, y2);
-        test_andable(x1, y1, x2, y2);
-        test_orable(x1, y1, x2, y2);
-        test_incrementable(x1, x2);
-        test_decrementable(x1, x2);
-    }
-    
-    template <class Big, class Small>
-    struct tester
-    {
-        void operator()(boost::min_rand& randomizer) const
-        {
-            Big b1 = Big(randomizer());
-            Big b2 = Big(randomizer());
-            Small s = Small(randomizer());
-            
-            test_all(Wrapped1<Big>(b1), Wrapped1<Big>(b2), b1, b2);
-            test_all(Wrapped2<Big, Small>(b1), s, b1, s);
-        }
-    };
-
-    // added as a regression test. We had a bug which this uncovered.
-    struct Point
-        : boost::addable<Point,
-        boost::subtractable<Point> >
-    {
-        Point( int h, int v ) : h(h), v(v) {}
-        Point() :h(0), v(0) {}
-        const Point& operator+=( const Point& rhs ) { h += rhs.h; v += rhs.v; return *this; }
-        const Point& operator-=( const Point& rhs ) { h -= rhs.h; v -= rhs.v; return *this; }
-
-        int h;
-        int v;
-    };
-} // unnamed namespace
-
-
-// workaround for MSVC bug; for some reasons the compiler doesn't instantiate
-// inherited operator templates at the moment it must, so the following
-// explicit instantiations force it to do that.
-
-#if defined(BOOST_MSVC) && (_MSC_VER <= 1200)
-template Wrapped1<int>;
-template Wrapped1<long>;
-template Wrapped1<unsigned int>;
-template Wrapped1<unsigned long>;
-
-template Wrapped2<int, int>;
-template Wrapped2<int, signed char>;
-template Wrapped2<long, signed char>;
-template Wrapped2<long, int>;
-template Wrapped2<long, long>;
-template Wrapped2<unsigned int, unsigned int>;
-template Wrapped2<unsigned int, unsigned char>;
-template Wrapped2<unsigned long, unsigned int>;
-template Wrapped2<unsigned long, unsigned char>;
-template Wrapped2<unsigned long, unsigned long>;
-#endif
-
-#ifdef NDEBUG
-#error This program is pointless when NDEBUG disables assert()!
-#endif
-
-int main()
-{
-    // Regression test.
-    Point x;
-    x = x + Point(3, 4);
-    x = x - Point(3, 4);
-    
-    for (int n = 0; n < 10000; ++n)
-    {
-        boost::min_rand r;
-        tester<long, int>()(r);
-        tester<long, signed char>()(r);
-        tester<long, long>()(r);
-        tester<int, int>()(r);
-        tester<int, signed char>()(r);
-        
-        tester<unsigned long, unsigned int>()(r);
-        tester<unsigned long, unsigned char>()(r);
-        tester<unsigned long, unsigned long>()(r);
-        tester<unsigned int, unsigned int>()(r);
-        tester<unsigned int, unsigned char>()(r);
-    }
-    
-    MyInt i1(1);
-    MyInt i2(2);
-    MyInt i;
-
-    assert( i1.value() == 1 );
-    assert( i2.value() == 2 );
-    assert( i.value() == 0 );
-
-    i = i2;
-    assert( i.value() == 2 );
-    assert( i2 == i );
-    assert( i1 != i2 );
-    assert( i1 <  i2 );
-    assert( i1 <= i2 );
-    assert( i <= i2 );
-    assert( i2 >  i1 );
-    assert( i2 >= i1 );
-    assert( i2 >= i );
-
-    i = i1 + i2; assert( i.value() == 3 );
-    i = i + i2; assert( i.value() == 5 );
-    i = i - i1; assert( i.value() == 4 );
-    i = i * i2; assert( i.value() == 8 );
-    i = i / i2; assert( i.value() == 4 );
-    i = i % (i - i1); assert( i.value() == 1 );
-    i = i2 + i2; assert( i.value() == 4 );
-    i = i1 | i2 | i; assert( i.value() == 7 );
-    i = i & i2; assert( i.value() == 2 );
-    i = i + i1; assert( i.value() == 3 );
-    i = i ^ i1; assert( i.value() == 2 );
-    i = (i+i1)*(i2|i1); assert( i.value() == 9 );
-    
-    MyLong j1(1);
-    MyLong j2(2);
-    MyLong j;
-
-    assert( j1.value() == 1 );
-    assert( j2.value() == 2 );
-    assert( j.value() == 0 );
-
-    j = j2;
-    assert( j.value() == 2 );
-    
-    assert( j2 == j );
-    assert( 2 == j );
-    assert( j2 == 2 );    
-    assert( j == j2 );
-    assert( j1 != j2 );
-    assert( j1 != 2 );
-    assert( 1 != j2 );
-    assert( j1 <  j2 );
-    assert( 1 <  j2 );
-    assert( j1 <  2 );
-    assert( j1 <= j2 );
-    assert( 1 <= j2 );
-    assert( j1 <= j );
-    assert( j <= j2 );
-    assert( 2 <= j2 );
-    assert( j <= 2 );
-    assert( j2 >  j1 );
-    assert( 2 >  j1 );
-    assert( j2 >  1 );
-    assert( j2 >= j1 );
-    assert( 2 >= j1 );
-    assert( j2 >= 1 );
-    assert( j2 >= j );
-    assert( 2 >= j );
-    assert( j2 >= 2 );
-
-    assert( (j1 + 2) == 3 );
-    assert( (1 + j2) == 3 );
-    j = j1 + j2; assert( j.value() == 3 );
-    
-    assert( (j + 2) == 5 );
-    assert( (3 + j2) == 5 );
-    j = j + j2; assert( j.value() == 5 );
-    
-    assert( (j - 1) == 4 );
-    j = j - j1; assert( j.value() == 4 );
-    
-    assert( (j * 2) == 8 );
-    assert( (4 * j2) == 8 );
-    j = j * j2; assert( j.value() == 8 );
-    
-    assert( (j / 2) == 4 );
-    j = j / j2; assert( j.value() == 4 );
-    
-    assert( (j % 3) == 1 );
-    j = j % (j - j1); assert( j.value() == 1 );
-    
-    j = j2 + j2; assert( j.value() == 4 );
-    
-    assert( (1 | j2 | j) == 7 );
-    assert( (j1 | 2 | j) == 7 );
-    assert( (j1 | j2 | 4) == 7 );
-    j = j1 | j2 | j; assert( j.value() == 7 );
-    
-    assert( (7 & j2) == 2 );
-    assert( (j & 2) == 2 );
-    j = j & j2; assert( j.value() == 2 );
-    
-    j = j | j1; assert( j.value() == 3 );
-    
-    assert( (3 ^ j1) == 2 );
-    assert( (j ^ 1) == 2 );
-    j = j ^ j1; assert( j.value() == 2 );
-    
-    j = (j+j1)*(j2|j1); assert( j.value() == 9 );
-    
-    std::cout << "0 errors detected\n";
-    return 0;
-}

sublibs

@@ -0,0 +1 @@
+The existance of this file tells the regression reporting programs that the directory contains sub-directories which are libraries.

test/Jamfile.v2

@@ -0,0 +1,49 @@
+# Copyright David Abrahams 2003.
+
+# Distributed under the Boost Software License, Version 1.0.
+# See http://www.boost.org/LICENSE_1_0.txt
+
+# For more information, see http://www.boost.org/
+
+# bring in rules for testing
+import testing ;
+
+project : requirements <library>/boost/utility//boost_utility ;
+
+run base_from_member_test.cpp ;
+run base_from_member_ref_test.cpp ;
+
+run binary_test.cpp ;
+
+run call_traits_test.cpp : -u : : <library>/boost/type_traits//testing ;
+
+run compressed_pair_test.cpp ;
+run compressed_pair_final_test.cpp ;
+
+run iterators_test.cpp ;
+
+run operators_test.cpp ;
+compile operators_constexpr_test.cpp ;
+
+compile result_of_test.cpp ;
+
+# compile-fail string_ref_from_rvalue.cpp ;
+run string_ref_test1.cpp ;
+run string_ref_test2.cpp ;
+run string_ref_test_io.cpp ;
+# compile-fail string_view_from_rvalue.cpp ;
+compile string_view_constexpr_test1.cpp ;
+run string_view_test1.cpp : : : <library>/boost/container_hash//boost_container_hash ;
+run string_view_test2.cpp ;
+run string_view_test_io.cpp ;
+
+run value_init_test.cpp ;
+run value_init_test2.cpp ;
+run value_init_test3.cpp ;
+run value_init_workaround_test.cpp ;
+run initialized_test.cpp ;
+compile-fail value_init_test_fail1.cpp ;
+compile-fail value_init_test_fail2.cpp ;
+compile-fail value_init_test_fail3.cpp ;
+compile-fail initialized_test_fail1.cpp ;
+compile-fail initialized_test_fail2.cpp ;

test/base_from_member_ref_test.cpp

@@ -0,0 +1,29 @@
+//
+// Test that a base_from_member<T&> can be properly constructed
+//
+// Copyright 2014 Agustin Berge
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/utility/base_from_member.hpp>
+
+#include <boost/core/lightweight_test.hpp>
+
+struct foo : boost::base_from_member<int&>
+{
+    explicit foo(int& ref) : boost::base_from_member<int&>(ref)
+    {
+        BOOST_TEST(&member == &ref);
+    }
+};
+
+int main()
+{
+    int i = 0;
+    foo f(i);
+
+    return boost::report_errors();
+}

test/base_from_member_test.cpp

@@ -0,0 +1,593 @@
+//  Boost test program for base-from-member class templates  -----------------//
+
+//  Copyright 2001, 2003 Daryle Walker.  Use, modification, and distribution are
+//  subject to the Boost Software License, Version 1.0.  (See accompanying file
+//  LICENSE_1_0.txt or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
+
+//  See <http://www.boost.org/libs/utility/> for the library's home page.
+
+//  Revision History
+//  14 Jun 2003  Adjusted code for Boost.Test changes (Daryle Walker)
+//  29 Aug 2001  Initial Version (Daryle Walker)
+
+#include <boost/core/lightweight_test.hpp>
+
+#include <boost/config.hpp>       // for BOOST_NO_MEMBER_TEMPLATES
+#include <boost/noncopyable.hpp>  // for boost::noncopyable
+
+#include <boost/utility/base_from_member.hpp>  // for boost::base_from_member
+
+#include <functional>  // for std::less
+#include <iostream>    // for std::cout (std::ostream, std::endl indirectly)
+#include <set>         // for std::set
+#include <typeinfo>    // for std::type_info
+#include <utility>     // for std::pair, std::make_pair
+#include <vector>      // for std::vector
+
+
+// Control if extra information is printed
+#ifndef CONTROL_EXTRA_PRINTING
+#define CONTROL_EXTRA_PRINTING  1
+#endif
+
+
+// A (sub)object can be identified by its memory location and its type.
+// Both are needed since an object can start at the same place as its
+// first base class subobject and/or contained subobject.
+typedef std::pair< void *, std::type_info const * >  object_id;
+
+// Object IDs need to be printed
+std::ostream &  operator <<( std::ostream &os, object_id const &oi );
+
+// A way to generate an object ID
+template < typename T >
+  object_id  identify( T &obj );
+
+// A custom comparison type is needed
+struct object_id_compare
+{
+    bool  operator ()( object_id const &a, object_id const &b ) const;
+
+};  // object_id_compare
+
+// A singleton of this type coordinates the acknowledgements
+// of objects being created and used.
+class object_registrar
+    : private boost::noncopyable
+{
+public:
+
+    #ifndef BOOST_NO_MEMBER_TEMPLATES
+    template < typename T >
+        void  register_object( T &obj )
+            { this->register_object_imp( identify(obj) ); }
+    template < typename T, typename U >
+        void  register_use( T &owner, U &owned )
+            { this->register_use_imp( identify(owner), identify(owned) ); }
+    template < typename T, typename U >
+        void  unregister_use( T &owner, U &owned )
+            { this->unregister_use_imp( identify(owner), identify(owned) ); }
+    template < typename T >
+        void  unregister_object( T &obj )
+            { this->unregister_object_imp( identify(obj) ); }
+    #endif
+
+    void  register_object_imp( object_id obj );
+    void  register_use_imp( object_id owner, object_id owned );
+    void  unregister_use_imp( object_id owner, object_id owned );
+    void  unregister_object_imp( object_id obj );
+
+    typedef std::set<object_id, object_id_compare>  set_type;
+
+    typedef std::vector<object_id>  error_record_type;
+    typedef std::vector< std::pair<object_id, object_id> >  error_pair_type;
+
+    set_type  db_;
+
+    error_pair_type    defrauders_in_, defrauders_out_;
+    error_record_type  overeager_, overkilled_;
+
+};  // object_registrar
+
+// A sample type to be used by containing types
+class base_or_member
+{
+public:
+    explicit  base_or_member( int x = 1, double y = -0.25 );
+             ~base_or_member();
+
+};  // base_or_member
+
+// A sample type that uses base_or_member, used
+// as a base for the main demonstration classes
+class base_class
+{
+public:
+    explicit  base_class( base_or_member &x, base_or_member *y = 0,
+     base_or_member *z = 0 );
+
+    ~base_class();
+
+private:
+    base_or_member  *x_, *y_, *z_;
+
+};  // base_class
+
+// This bad class demonstrates the direct method of a base class needing
+// to be initialized by a member.  This is improper since the member
+// isn't initialized until after the base class.
+class bad_class
+    : public base_class
+{
+public:
+     bad_class();
+    ~bad_class();
+
+private:
+    base_or_member  x_;
+
+};  // bad_class
+
+// The first good class demonstrates the correct way to initialize a
+// base class with a member.  The member is changed to another base
+// class, one that is initialized before the base that needs it.
+class good_class_1
+    : private boost::base_from_member<base_or_member>
+    , public base_class
+{
+    typedef boost::base_from_member<base_or_member>  pbase_type;
+    typedef base_class                                base_type;
+
+public:
+     good_class_1();
+    ~good_class_1();
+
+};  // good_class_1
+
+// The second good class also demonstrates the correct way to initialize
+// base classes with other subobjects.  This class uses the other helpers
+// in the library, and shows the technique of using two base subobjects
+// of the "same" type.
+class good_class_2
+    : private boost::base_from_member<base_or_member, 0>
+    , private boost::base_from_member<base_or_member, 1>
+    , private boost::base_from_member<base_or_member, 2>
+    , public base_class
+{
+    typedef boost::base_from_member<base_or_member, 0>  pbase_type0;
+    typedef boost::base_from_member<base_or_member, 1>  pbase_type1;
+    typedef boost::base_from_member<base_or_member, 2>  pbase_type2;
+    typedef base_class                                   base_type;
+
+public:
+     good_class_2();
+    ~good_class_2();
+
+};  // good_class_2
+
+// Declare/define the single object registrar
+object_registrar  obj_reg;
+
+
+// Main functionality
+int
+main()
+{
+    BOOST_TEST( obj_reg.db_.empty() );
+    BOOST_TEST( obj_reg.defrauders_in_.empty() );
+    BOOST_TEST( obj_reg.defrauders_out_.empty() );
+    BOOST_TEST( obj_reg.overeager_.empty() );
+    BOOST_TEST( obj_reg.overkilled_.empty() );
+
+    // Make a separate block to examine pre- and post-effects
+    {
+        using std::cout;
+        using std::endl;
+
+        bad_class  bc;
+        BOOST_TEST( obj_reg.db_.size() == 3 );
+        BOOST_TEST( obj_reg.defrauders_in_.size() == 1 );
+
+        good_class_1  gc1;
+        BOOST_TEST( obj_reg.db_.size() == 6 );
+        BOOST_TEST( obj_reg.defrauders_in_.size() == 1 );
+
+        good_class_2  gc2;
+        BOOST_TEST( obj_reg.db_.size() == 11 );
+        BOOST_TEST( obj_reg.defrauders_in_.size() == 1 );
+
+        BOOST_TEST( obj_reg.defrauders_out_.empty() );
+        BOOST_TEST( obj_reg.overeager_.empty() );
+        BOOST_TEST( obj_reg.overkilled_.empty() );
+
+        // Getting the addresses of the objects ensure
+        // that they're used, and not optimized away.
+        cout << "Object 'bc' is at " << &bc << '.' << endl;
+        cout << "Object 'gc1' is at " << &gc1 << '.' << endl;
+        cout << "Object 'gc2' is at " << &gc2 << '.' << endl;
+    }
+
+    BOOST_TEST( obj_reg.db_.empty() );
+    BOOST_TEST( obj_reg.defrauders_in_.size() == 1 );
+    BOOST_TEST( obj_reg.defrauders_out_.size() == 1 );
+    BOOST_TEST( obj_reg.overeager_.empty() );
+    BOOST_TEST( obj_reg.overkilled_.empty() );
+
+    return boost::report_errors();
+}
+
+
+// Print an object's ID
+std::ostream &
+operator <<
+(
+    std::ostream &     os,
+    object_id const &  oi
+)
+{
+    // I had an std::ostringstream to help, but I did not need it since
+    // the program never screws around with formatting.  Worse, using
+    // std::ostringstream is an issue with some compilers.
+
+    return os << '[' << ( oi.second ? oi.second->name() : "NOTHING" )
+     << " at " << oi.first << ']';
+}
+
+// Get an object ID given an object
+template < typename T >
+inline
+object_id
+identify
+(
+    T &  obj
+)
+{
+    return std::make_pair( static_cast<void *>(&obj), &(typeid( obj )) );
+}
+
+// Compare two object IDs
+bool
+object_id_compare::operator ()
+(
+    object_id const &  a,
+    object_id const &  b
+) const
+{
+    std::less<void *>  vp_cmp;
+    if ( vp_cmp(a.first, b.first) )
+    {
+        return true;
+    }
+    else if ( vp_cmp(b.first, a.first) )
+    {
+        return false;
+    }
+    else
+    {
+        // object pointers are equal, compare the types
+        if ( a.second == b.second )
+        {
+            return false;
+        }
+        else if ( !a.second )
+        {
+            return true;   // NULL preceeds anything else
+        }
+        else if ( !b.second )
+        {
+            return false;  // NULL preceeds anything else
+        }
+        else
+        {
+            return a.second->before( *b.second ) != 0;
+        }
+    }
+}
+
+// Let an object register its existence
+void
+object_registrar::register_object_imp
+(
+    object_id  obj
+)
+{
+    if ( db_.count(obj) <= 0 )
+    {
+        db_.insert( obj );
+
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << "Registered " << obj << '.' << std::endl;
+        #endif
+    }
+    else
+    {
+        overeager_.push_back( obj );
+
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << "Attempted to register a non-existant " << obj
+         << '.' << std::endl;
+        #endif
+    }
+}
+
+// Let an object register its use of another object
+void
+object_registrar::register_use_imp
+(
+    object_id  owner,
+    object_id  owned
+)
+{
+    if ( db_.count(owned) > 0 )
+    {
+        // We don't care to record usage registrations
+    }
+    else
+    {
+        defrauders_in_.push_back( std::make_pair(owner, owned) );
+
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << "Attempted to own a non-existant " << owned
+         << " by " << owner << '.' << std::endl;
+        #endif
+    }
+}
+
+// Let an object un-register its use of another object
+void
+object_registrar::unregister_use_imp
+(
+    object_id  owner,
+    object_id  owned
+)
+{
+    if ( db_.count(owned) > 0 )
+    {
+        // We don't care to record usage un-registrations
+    }
+    else
+    {
+        defrauders_out_.push_back( std::make_pair(owner, owned) );
+
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << "Attempted to disown a non-existant " << owned
+         << " by " << owner << '.' << std::endl;
+        #endif
+    }
+}
+
+// Let an object un-register its existence
+void
+object_registrar::unregister_object_imp
+(
+    object_id  obj
+)
+{
+    set_type::iterator const  i = db_.find( obj );
+
+    if ( i != db_.end() )
+    {
+        db_.erase( i );
+
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << "Unregistered " << obj << '.' << std::endl;
+        #endif
+    }
+    else
+    {
+        overkilled_.push_back( obj );
+
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << "Attempted to unregister a non-existant " << obj
+         << '.' << std::endl;
+        #endif
+    }
+}
+
+// Macros to abstract the registration of objects
+#ifndef BOOST_NO_MEMBER_TEMPLATES
+#define PRIVATE_REGISTER_BIRTH(o)     obj_reg.register_object( (o) )
+#define PRIVATE_REGISTER_DEATH(o)     obj_reg.unregister_object( (o) )
+#define PRIVATE_REGISTER_USE(o, w)    obj_reg.register_use( (o), (w) )
+#define PRIVATE_UNREGISTER_USE(o, w)  obj_reg.unregister_use( (o), (w) )
+#else
+#define PRIVATE_REGISTER_BIRTH(o)     obj_reg.register_object_imp( \
+ identify((o)) )
+#define PRIVATE_REGISTER_DEATH(o)     obj_reg.unregister_object_imp( \
+ identify((o)) )
+#define PRIVATE_REGISTER_USE(o, w)    obj_reg.register_use_imp( identify((o)), \
+ identify((w)) )
+#define PRIVATE_UNREGISTER_USE(o, w)  obj_reg.unregister_use_imp( \
+ identify((o)), identify((w)) )
+#endif
+
+// Create a base_or_member, with arguments to simulate member initializations
+base_or_member::base_or_member
+(
+    int     x,  // = 1
+    double  y   // = -0.25
+)
+{
+    PRIVATE_REGISTER_BIRTH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy x-factor is " << x << " and my y-factor is " << y
+     << '.' << std::endl;
+    #endif
+}
+
+// Destroy a base_or_member
+inline
+base_or_member::~base_or_member
+(
+)
+{
+    PRIVATE_REGISTER_DEATH( *this );
+}
+
+// Create a base_class, registering any objects used
+base_class::base_class
+(
+    base_or_member &  x,
+    base_or_member *  y,  // = 0
+    base_or_member *  z   // = 0
+)
+    : x_( &x ), y_( y ), z_( z )
+{
+    PRIVATE_REGISTER_BIRTH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy x-factor is " << x_;
+    #endif
+
+    PRIVATE_REGISTER_USE( *this, *x_ );
+
+    if ( y_ )
+    {
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << ", my y-factor is " << y_;
+        #endif
+
+        PRIVATE_REGISTER_USE( *this, *y_ );
+    }
+
+    if ( z_ )
+    {
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << ", my z-factor is " << z_;
+        #endif
+
+        PRIVATE_REGISTER_USE( *this, *z_ );
+    }
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << '.' << std::endl;
+    #endif
+}
+
+// Destroy a base_class, unregistering the objects it uses
+base_class::~base_class
+(
+)
+{
+    PRIVATE_REGISTER_DEATH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy x-factor was " << x_;
+    #endif
+
+    PRIVATE_UNREGISTER_USE( *this, *x_ );
+
+    if ( y_ )
+    {
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << ", my y-factor was " << y_;
+        #endif
+
+        PRIVATE_UNREGISTER_USE( *this, *y_ );
+    }
+
+    if ( z_ )
+    {
+        #if CONTROL_EXTRA_PRINTING
+        std::cout << ", my z-factor was " << z_;
+        #endif
+
+        PRIVATE_UNREGISTER_USE( *this, *z_ );
+    }
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << '.' << std::endl;
+    #endif
+}
+
+// Create a bad_class, noting the improper construction order
+bad_class::bad_class
+(
+)
+    : x_( -7, 16.75 ), base_class( x_ )  // this order doesn't matter
+{
+    PRIVATE_REGISTER_BIRTH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy factor is at " << &x_
+     << " and my base is at " << static_cast<base_class *>(this) << '.'
+     << std::endl;
+    #endif
+}
+
+// Destroy a bad_class, noting the improper destruction order
+bad_class::~bad_class
+(
+)
+{
+    PRIVATE_REGISTER_DEATH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy factor was at " << &x_
+     << " and my base was at " << static_cast<base_class *>(this)
+     << '.' << std::endl;
+    #endif
+}
+
+// Create a good_class_1, noting the proper construction order
+good_class_1::good_class_1
+(
+)
+    : pbase_type( 8 ), base_type( member )
+{
+    PRIVATE_REGISTER_BIRTH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy factor is at " << &member
+     << " and my base is at " << static_cast<base_class *>(this) << '.'
+     << std::endl;
+    #endif
+}
+
+// Destroy a good_class_1, noting the proper destruction order
+good_class_1::~good_class_1
+(
+)
+{
+    PRIVATE_REGISTER_DEATH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy factor was at " << &member
+     << " and my base was at " << static_cast<base_class *>(this)
+     << '.' << std::endl;
+    #endif
+}
+
+// Create a good_class_2, noting the proper construction order
+good_class_2::good_class_2
+(
+)
+    : pbase_type0(), pbase_type1(-16, 0.125), pbase_type2(2, -3)
+    , base_type( pbase_type1::member, &this->pbase_type0::member,
+       &this->pbase_type2::member )
+{
+    PRIVATE_REGISTER_BIRTH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy factors are at " << &this->pbase_type0::member
+     << ", " << &this->pbase_type1::member << ", "
+     << &this->pbase_type2::member << ", and my base is at "
+     << static_cast<base_class *>(this) << '.' << std::endl;
+    #endif
+}
+
+// Destroy a good_class_2, noting the proper destruction order
+good_class_2::~good_class_2
+(
+)
+{
+    PRIVATE_REGISTER_DEATH( *this );
+
+    #if CONTROL_EXTRA_PRINTING
+    std::cout << "\tMy factors were at " << &this->pbase_type0::member
+     << ", " << &this->pbase_type1::member << ", "
+     << &this->pbase_type2::member << ", and my base was at "
+     << static_cast<base_class *>(this) << '.' << std::endl;
+    #endif
+}

test/binary_test.cpp

@@ -0,0 +1,647 @@
+/*=============================================================================
+    Copyright (c) 2006, 2007 Matthew Calabrese
+
+    Use, modification and distribution is subject to the Boost Software
+    License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+    http://www.boost.org/LICENSE_1_0.txt)
+==============================================================================*/
+
+#include <boost/core/lightweight_test.hpp>
+#include <boost/utility/binary.hpp>
+#include <algorithm>
+#include <cstddef>
+
+#ifdef BOOST_MSVC
+#pragma warning(disable:4996) // warning C4996: 'std::equal': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators'
+#endif
+
+/*
+Note: This file tests every single valid bit-grouping on its own, and some
+      random combinations of bit-groupings.
+*/
+
+std::size_t const num_random_test_values = 32;
+
+// Note: These hex values should all correspond with the binary array below
+unsigned int const random_unsigned_ints_hex[num_random_test_values]
+  = { 0x0103u, 0x77ebu, 0x5f36u, 0x1f18u, 0xc530u, 0xa73au, 0xd6f8u, 0x0919u
+    , 0xfbb0u, 0x3e7cu, 0xd0e9u, 0x22c8u, 0x724eu, 0x14fau, 0xd98eu, 0x40b5
+    , 0xeba0u, 0xfe50u, 0x688au, 0x1b05u, 0x5f9cu, 0xe4fcu, 0xa7b8u, 0xd3acu
+    , 0x1dddu, 0xbf04u, 0x8352u, 0xe89cu, 0x7506u, 0xe767u, 0xf489u, 0xe167
+    };
+
+unsigned int const random_unsigned_ints_binary[num_random_test_values]
+  = { BOOST_BINARY( 0 00010000 0011 ), BOOST_BINARY( 0 11101 1111  101011 )
+    , BOOST_BINARY( 010111 1100110 1 1 0 ), BOOST_BINARY( 000 1 11110 00 11000 )
+    , BOOST_BINARY( 110 001010 0110 000 ), BOOST_BINARY( 1010 01110011 1010 )
+    , BOOST_BINARY( 11 010 1 101111 1000 ), BOOST_BINARY( 0000 100100 0110 01 )
+    , BOOST_BINARY( 1111 101110 11 0000 ), BOOST_BINARY( 00111110 01111100 )
+    , BOOST_BINARY( 11  010 000111 01001 ), BOOST_BINARY( 00100 010110   01000 )
+    , BOOST_BINARY( 01 11001001 001110 ), BOOST_BINARY( 0010 1001111 1010 )
+    , BOOST_BINARY( 1101 1 00110 0 01110 ), BOOST_BINARY( 100 000 01011010 1 )
+    , BOOST_BINARY( 11 1010 1110 1000 00 ), BOOST_BINARY( 11111 110010 10000 )
+    , BOOST_BINARY( 01101 00010 001010 ), BOOST_BINARY( 000 11011 000001 01 )
+    , BOOST_BINARY( 01 01111 1100111 00 ), BOOST_BINARY( 1 110010 0111111 00 )
+    , BOOST_BINARY( 101 0011 11 01110 00 ), BOOST_BINARY( 110100 1 110101 100 )
+    , BOOST_BINARY( 00 1110111 011 101 ), BOOST_BINARY( 1011 1111 00000 100 )
+    , BOOST_BINARY( 1000 00110 101 0010 ), BOOST_BINARY( 1110  10001 001110 0 )
+    , BOOST_BINARY( 011 1010100 000 110 ), BOOST_BINARY( 1110 0111 01100 111 )
+    , BOOST_BINARY( 11110 10010 001001 ), BOOST_BINARY( 11 1000010 1100 111 )
+    };
+
+unsigned int const unsigned_ints_1_bit[2] =
+{ BOOST_BINARY( 0 )
+, BOOST_BINARY( 1 )
+};
+
+unsigned int const unsigned_ints_2_bits[4] =
+{ BOOST_BINARY( 00 )
+, BOOST_BINARY( 01 )
+, BOOST_BINARY( 10 )
+, BOOST_BINARY( 11 )
+};
+
+unsigned int const unsigned_ints_3_bits[8] =
+{ BOOST_BINARY( 000 )
+, BOOST_BINARY( 001 )
+, BOOST_BINARY( 010 )
+, BOOST_BINARY( 011 )
+, BOOST_BINARY( 100 )
+, BOOST_BINARY( 101 )
+, BOOST_BINARY( 110 )
+, BOOST_BINARY( 111 )
+};
+
+unsigned int const unsigned_ints_4_bits[16] =
+{ BOOST_BINARY( 0000 )
+, BOOST_BINARY( 0001 )
+, BOOST_BINARY( 0010 )
+, BOOST_BINARY( 0011 )
+, BOOST_BINARY( 0100 )
+, BOOST_BINARY( 0101 )
+, BOOST_BINARY( 0110 )
+, BOOST_BINARY( 0111 )
+, BOOST_BINARY( 1000 )
+, BOOST_BINARY( 1001 )
+, BOOST_BINARY( 1010 )
+, BOOST_BINARY( 1011 )
+, BOOST_BINARY( 1100 )
+, BOOST_BINARY( 1101 )
+, BOOST_BINARY( 1110 )
+, BOOST_BINARY( 1111 )
+};
+
+unsigned int const unsigned_ints_5_bits[32] =
+{ BOOST_BINARY( 00000 )
+, BOOST_BINARY( 00001 )
+, BOOST_BINARY( 00010 )
+, BOOST_BINARY( 00011 )
+, BOOST_BINARY( 00100 )
+, BOOST_BINARY( 00101 )
+, BOOST_BINARY( 00110 )
+, BOOST_BINARY( 00111 )
+, BOOST_BINARY( 01000 )
+, BOOST_BINARY( 01001 )
+, BOOST_BINARY( 01010 )
+, BOOST_BINARY( 01011 )
+, BOOST_BINARY( 01100 )
+, BOOST_BINARY( 01101 )
+, BOOST_BINARY( 01110 )
+, BOOST_BINARY( 01111 )
+, BOOST_BINARY( 10000 )
+, BOOST_BINARY( 10001 )
+, BOOST_BINARY( 10010 )
+, BOOST_BINARY( 10011 )
+, BOOST_BINARY( 10100 )
+, BOOST_BINARY( 10101 )
+, BOOST_BINARY( 10110 )
+, BOOST_BINARY( 10111 )
+, BOOST_BINARY( 11000 )
+, BOOST_BINARY( 11001 )
+, BOOST_BINARY( 11010 )
+, BOOST_BINARY( 11011 )
+, BOOST_BINARY( 11100 )
+, BOOST_BINARY( 11101 )
+, BOOST_BINARY( 11110 )
+, BOOST_BINARY( 11111 )
+};
+
+unsigned int const unsigned_ints_6_bits[64] =
+{ BOOST_BINARY( 000000 )
+, BOOST_BINARY( 000001 )
+, BOOST_BINARY( 000010 )
+, BOOST_BINARY( 000011 )
+, BOOST_BINARY( 000100 )
+, BOOST_BINARY( 000101 )
+, BOOST_BINARY( 000110 )
+, BOOST_BINARY( 000111 )
+, BOOST_BINARY( 001000 )
+, BOOST_BINARY( 001001 )
+, BOOST_BINARY( 001010 )
+, BOOST_BINARY( 001011 )
+, BOOST_BINARY( 001100 )
+, BOOST_BINARY( 001101 )
+, BOOST_BINARY( 001110 )
+, BOOST_BINARY( 001111 )
+, BOOST_BINARY( 010000 )
+, BOOST_BINARY( 010001 )
+, BOOST_BINARY( 010010 )
+, BOOST_BINARY( 010011 )
+, BOOST_BINARY( 010100 )
+, BOOST_BINARY( 010101 )
+, BOOST_BINARY( 010110 )
+, BOOST_BINARY( 010111 )
+, BOOST_BINARY( 011000 )
+, BOOST_BINARY( 011001 )
+, BOOST_BINARY( 011010 )
+, BOOST_BINARY( 011011 )
+, BOOST_BINARY( 011100 )
+, BOOST_BINARY( 011101 )
+, BOOST_BINARY( 011110 )
+, BOOST_BINARY( 011111 )
+, BOOST_BINARY( 100000 )
+, BOOST_BINARY( 100001 )
+, BOOST_BINARY( 100010 )
+, BOOST_BINARY( 100011 )
+, BOOST_BINARY( 100100 )
+, BOOST_BINARY( 100101 )
+, BOOST_BINARY( 100110 )
+, BOOST_BINARY( 100111 )
+, BOOST_BINARY( 101000 )
+, BOOST_BINARY( 101001 )
+, BOOST_BINARY( 101010 )
+, BOOST_BINARY( 101011 )
+, BOOST_BINARY( 101100 )
+, BOOST_BINARY( 101101 )
+, BOOST_BINARY( 101110 )
+, BOOST_BINARY( 101111 )
+, BOOST_BINARY( 110000 )
+, BOOST_BINARY( 110001 )
+, BOOST_BINARY( 110010 )
+, BOOST_BINARY( 110011 )
+, BOOST_BINARY( 110100 )
+, BOOST_BINARY( 110101 )
+, BOOST_BINARY( 110110 )
+, BOOST_BINARY( 110111 )
+, BOOST_BINARY( 111000 )
+, BOOST_BINARY( 111001 )
+, BOOST_BINARY( 111010 )
+, BOOST_BINARY( 111011 )
+, BOOST_BINARY( 111100 )
+, BOOST_BINARY( 111101 )
+, BOOST_BINARY( 111110 )
+, BOOST_BINARY( 111111 )
+};
+
+unsigned int const unsigned_ints_7_bits[128] =
+{ BOOST_BINARY( 0000000 )
+, BOOST_BINARY( 0000001 )
+, BOOST_BINARY( 0000010 )
+, BOOST_BINARY( 0000011 )
+, BOOST_BINARY( 0000100 )
+, BOOST_BINARY( 0000101 )
+, BOOST_BINARY( 0000110 )
+, BOOST_BINARY( 0000111 )
+, BOOST_BINARY( 0001000 )
+, BOOST_BINARY( 0001001 )
+, BOOST_BINARY( 0001010 )
+, BOOST_BINARY( 0001011 )
+, BOOST_BINARY( 0001100 )
+, BOOST_BINARY( 0001101 )
+, BOOST_BINARY( 0001110 )
+, BOOST_BINARY( 0001111 )
+, BOOST_BINARY( 0010000 )
+, BOOST_BINARY( 0010001 )
+, BOOST_BINARY( 0010010 )
+, BOOST_BINARY( 0010011 )
+, BOOST_BINARY( 0010100 )
+, BOOST_BINARY( 0010101 )
+, BOOST_BINARY( 0010110 )
+, BOOST_BINARY( 0010111 )
+, BOOST_BINARY( 0011000 )
+, BOOST_BINARY( 0011001 )
+, BOOST_BINARY( 0011010 )
+, BOOST_BINARY( 0011011 )
+, BOOST_BINARY( 0011100 )
+, BOOST_BINARY( 0011101 )
+, BOOST_BINARY( 0011110 )
+, BOOST_BINARY( 0011111 )
+, BOOST_BINARY( 0100000 )
+, BOOST_BINARY( 0100001 )
+, BOOST_BINARY( 0100010 )
+, BOOST_BINARY( 0100011 )
+, BOOST_BINARY( 0100100 )
+, BOOST_BINARY( 0100101 )
+, BOOST_BINARY( 0100110 )
+, BOOST_BINARY( 0100111 )
+, BOOST_BINARY( 0101000 )
+, BOOST_BINARY( 0101001 )
+, BOOST_BINARY( 0101010 )
+, BOOST_BINARY( 0101011 )
+, BOOST_BINARY( 0101100 )
+, BOOST_BINARY( 0101101 )
+, BOOST_BINARY( 0101110 )
+, BOOST_BINARY( 0101111 )
+, BOOST_BINARY( 0110000 )
+, BOOST_BINARY( 0110001 )
+, BOOST_BINARY( 0110010 )
+, BOOST_BINARY( 0110011 )
+, BOOST_BINARY( 0110100 )
+, BOOST_BINARY( 0110101 )
+, BOOST_BINARY( 0110110 )
+, BOOST_BINARY( 0110111 )
+, BOOST_BINARY( 0111000 )
+, BOOST_BINARY( 0111001 )
+, BOOST_BINARY( 0111010 )
+, BOOST_BINARY( 0111011 )
+, BOOST_BINARY( 0111100 )
+, BOOST_BINARY( 0111101 )
+, BOOST_BINARY( 0111110 )
+, BOOST_BINARY( 0111111 )
+, BOOST_BINARY( 1000000 )
+, BOOST_BINARY( 1000001 )
+, BOOST_BINARY( 1000010 )
+, BOOST_BINARY( 1000011 )
+, BOOST_BINARY( 1000100 )
+, BOOST_BINARY( 1000101 )
+, BOOST_BINARY( 1000110 )
+, BOOST_BINARY( 1000111 )
+, BOOST_BINARY( 1001000 )
+, BOOST_BINARY( 1001001 )
+, BOOST_BINARY( 1001010 )
+, BOOST_BINARY( 1001011 )
+, BOOST_BINARY( 1001100 )
+, BOOST_BINARY( 1001101 )
+, BOOST_BINARY( 1001110 )
+, BOOST_BINARY( 1001111 )
+, BOOST_BINARY( 1010000 )
+, BOOST_BINARY( 1010001 )
+, BOOST_BINARY( 1010010 )
+, BOOST_BINARY( 1010011 )
+, BOOST_BINARY( 1010100 )
+, BOOST_BINARY( 1010101 )
+, BOOST_BINARY( 1010110 )
+, BOOST_BINARY( 1010111 )
+, BOOST_BINARY( 1011000 )
+, BOOST_BINARY( 1011001 )
+, BOOST_BINARY( 1011010 )
+, BOOST_BINARY( 1011011 )
+, BOOST_BINARY( 1011100 )
+, BOOST_BINARY( 1011101 )
+, BOOST_BINARY( 1011110 )
+, BOOST_BINARY( 1011111 )
+, BOOST_BINARY( 1100000 )
+, BOOST_BINARY( 1100001 )
+, BOOST_BINARY( 1100010 )
+, BOOST_BINARY( 1100011 )
+, BOOST_BINARY( 1100100 )
+, BOOST_BINARY( 1100101 )
+, BOOST_BINARY( 1100110 )
+, BOOST_BINARY( 1100111 )
+, BOOST_BINARY( 1101000 )
+, BOOST_BINARY( 1101001 )
+, BOOST_BINARY( 1101010 )
+, BOOST_BINARY( 1101011 )
+, BOOST_BINARY( 1101100 )
+, BOOST_BINARY( 1101101 )
+, BOOST_BINARY( 1101110 )
+, BOOST_BINARY( 1101111 )
+, BOOST_BINARY( 1110000 )
+, BOOST_BINARY( 1110001 )
+, BOOST_BINARY( 1110010 )
+, BOOST_BINARY( 1110011 )
+, BOOST_BINARY( 1110100 )
+, BOOST_BINARY( 1110101 )
+, BOOST_BINARY( 1110110 )
+, BOOST_BINARY( 1110111 )
+, BOOST_BINARY( 1111000 )
+, BOOST_BINARY( 1111001 )
+, BOOST_BINARY( 1111010 )
+, BOOST_BINARY( 1111011 )
+, BOOST_BINARY( 1111100 )
+, BOOST_BINARY( 1111101 )
+, BOOST_BINARY( 1111110 )
+, BOOST_BINARY( 1111111 )
+};
+unsigned int const unsigned_ints_8_bits[256] =
+{ BOOST_BINARY( 00000000 )
+, BOOST_BINARY( 00000001 )
+, BOOST_BINARY( 00000010 )
+, BOOST_BINARY( 00000011 )
+, BOOST_BINARY( 00000100 )
+, BOOST_BINARY( 00000101 )
+, BOOST_BINARY( 00000110 )
+, BOOST_BINARY( 00000111 )
+, BOOST_BINARY( 00001000 )
+, BOOST_BINARY( 00001001 )
+, BOOST_BINARY( 00001010 )
+, BOOST_BINARY( 00001011 )
+, BOOST_BINARY( 00001100 )
+, BOOST_BINARY( 00001101 )
+, BOOST_BINARY( 00001110 )
+, BOOST_BINARY( 00001111 )
+, BOOST_BINARY( 00010000 )
+, BOOST_BINARY( 00010001 )
+, BOOST_BINARY( 00010010 )
+, BOOST_BINARY( 00010011 )
+, BOOST_BINARY( 00010100 )
+, BOOST_BINARY( 00010101 )
+, BOOST_BINARY( 00010110 )
+, BOOST_BINARY( 00010111 )
+, BOOST_BINARY( 00011000 )
+, BOOST_BINARY( 00011001 )
+, BOOST_BINARY( 00011010 )
+, BOOST_BINARY( 00011011 )
+, BOOST_BINARY( 00011100 )
+, BOOST_BINARY( 00011101 )
+, BOOST_BINARY( 00011110 )
+, BOOST_BINARY( 00011111 )
+, BOOST_BINARY( 00100000 )
+, BOOST_BINARY( 00100001 )
+, BOOST_BINARY( 00100010 )
+, BOOST_BINARY( 00100011 )
+, BOOST_BINARY( 00100100 )
+, BOOST_BINARY( 00100101 )
+, BOOST_BINARY( 00100110 )
+, BOOST_BINARY( 00100111 )
+, BOOST_BINARY( 00101000 )
+, BOOST_BINARY( 00101001 )
+, BOOST_BINARY( 00101010 )
+, BOOST_BINARY( 00101011 )
+, BOOST_BINARY( 00101100 )
+, BOOST_BINARY( 00101101 )
+, BOOST_BINARY( 00101110 )
+, BOOST_BINARY( 00101111 )
+, BOOST_BINARY( 00110000 )
+, BOOST_BINARY( 00110001 )
+, BOOST_BINARY( 00110010 )
+, BOOST_BINARY( 00110011 )
+, BOOST_BINARY( 00110100 )
+, BOOST_BINARY( 00110101 )
+, BOOST_BINARY( 00110110 )
+, BOOST_BINARY( 00110111 )
+, BOOST_BINARY( 00111000 )
+, BOOST_BINARY( 00111001 )
+, BOOST_BINARY( 00111010 )
+, BOOST_BINARY( 00111011 )
+, BOOST_BINARY( 00111100 )
+, BOOST_BINARY( 00111101 )
+, BOOST_BINARY( 00111110 )
+, BOOST_BINARY( 00111111 )
+, BOOST_BINARY( 01000000 )
+, BOOST_BINARY( 01000001 )
+, BOOST_BINARY( 01000010 )
+, BOOST_BINARY( 01000011 )
+, BOOST_BINARY( 01000100 )
+, BOOST_BINARY( 01000101 )
+, BOOST_BINARY( 01000110 )
+, BOOST_BINARY( 01000111 )
+, BOOST_BINARY( 01001000 )
+, BOOST_BINARY( 01001001 )
+, BOOST_BINARY( 01001010 )
+, BOOST_BINARY( 01001011 )
+, BOOST_BINARY( 01001100 )
+, BOOST_BINARY( 01001101 )
+, BOOST_BINARY( 01001110 )
+, BOOST_BINARY( 01001111 )
+, BOOST_BINARY( 01010000 )
+, BOOST_BINARY( 01010001 )
+, BOOST_BINARY( 01010010 )
+, BOOST_BINARY( 01010011 )
+, BOOST_BINARY( 01010100 )
+, BOOST_BINARY( 01010101 )
+, BOOST_BINARY( 01010110 )
+, BOOST_BINARY( 01010111 )
+, BOOST_BINARY( 01011000 )
+, BOOST_BINARY( 01011001 )
+, BOOST_BINARY( 01011010 )
+, BOOST_BINARY( 01011011 )
+, BOOST_BINARY( 01011100 )
+, BOOST_BINARY( 01011101 )
+, BOOST_BINARY( 01011110 )
+, BOOST_BINARY( 01011111 )
+, BOOST_BINARY( 01100000 )
+, BOOST_BINARY( 01100001 )
+, BOOST_BINARY( 01100010 )
+, BOOST_BINARY( 01100011 )
+, BOOST_BINARY( 01100100 )
+, BOOST_BINARY( 01100101 )
+, BOOST_BINARY( 01100110 )
+, BOOST_BINARY( 01100111 )
+, BOOST_BINARY( 01101000 )
+, BOOST_BINARY( 01101001 )
+, BOOST_BINARY( 01101010 )
+, BOOST_BINARY( 01101011 )
+, BOOST_BINARY( 01101100 )
+, BOOST_BINARY( 01101101 )
+, BOOST_BINARY( 01101110 )
+, BOOST_BINARY( 01101111 )
+, BOOST_BINARY( 01110000 )
+, BOOST_BINARY( 01110001 )
+, BOOST_BINARY( 01110010 )
+, BOOST_BINARY( 01110011 )
+, BOOST_BINARY( 01110100 )
+, BOOST_BINARY( 01110101 )
+, BOOST_BINARY( 01110110 )
+, BOOST_BINARY( 01110111 )
+, BOOST_BINARY( 01111000 )
+, BOOST_BINARY( 01111001 )
+, BOOST_BINARY( 01111010 )
+, BOOST_BINARY( 01111011 )
+, BOOST_BINARY( 01111100 )
+, BOOST_BINARY( 01111101 )
+, BOOST_BINARY( 01111110 )
+, BOOST_BINARY( 01111111 )
+, BOOST_BINARY( 10000000 )
+, BOOST_BINARY( 10000001 )
+, BOOST_BINARY( 10000010 )
+, BOOST_BINARY( 10000011 )
+, BOOST_BINARY( 10000100 )
+, BOOST_BINARY( 10000101 )
+, BOOST_BINARY( 10000110 )
+, BOOST_BINARY( 10000111 )
+, BOOST_BINARY( 10001000 )
+, BOOST_BINARY( 10001001 )
+, BOOST_BINARY( 10001010 )
+, BOOST_BINARY( 10001011 )
+, BOOST_BINARY( 10001100 )
+, BOOST_BINARY( 10001101 )
+, BOOST_BINARY( 10001110 )
+, BOOST_BINARY( 10001111 )
+, BOOST_BINARY( 10010000 )
+, BOOST_BINARY( 10010001 )
+, BOOST_BINARY( 10010010 )
+, BOOST_BINARY( 10010011 )
+, BOOST_BINARY( 10010100 )
+, BOOST_BINARY( 10010101 )
+, BOOST_BINARY( 10010110 )
+, BOOST_BINARY( 10010111 )
+, BOOST_BINARY( 10011000 )
+, BOOST_BINARY( 10011001 )
+, BOOST_BINARY( 10011010 )
+, BOOST_BINARY( 10011011 )
+, BOOST_BINARY( 10011100 )
+, BOOST_BINARY( 10011101 )
+, BOOST_BINARY( 10011110 )
+, BOOST_BINARY( 10011111 )
+, BOOST_BINARY( 10100000 )
+, BOOST_BINARY( 10100001 )
+, BOOST_BINARY( 10100010 )
+, BOOST_BINARY( 10100011 )
+, BOOST_BINARY( 10100100 )
+, BOOST_BINARY( 10100101 )
+, BOOST_BINARY( 10100110 )
+, BOOST_BINARY( 10100111 )
+, BOOST_BINARY( 10101000 )
+, BOOST_BINARY( 10101001 )
+, BOOST_BINARY( 10101010 )
+, BOOST_BINARY( 10101011 )
+, BOOST_BINARY( 10101100 )
+, BOOST_BINARY( 10101101 )
+, BOOST_BINARY( 10101110 )
+, BOOST_BINARY( 10101111 )
+, BOOST_BINARY( 10110000 )
+, BOOST_BINARY( 10110001 )
+, BOOST_BINARY( 10110010 )
+, BOOST_BINARY( 10110011 )
+, BOOST_BINARY( 10110100 )
+, BOOST_BINARY( 10110101 )
+, BOOST_BINARY( 10110110 )
+, BOOST_BINARY( 10110111 )
+, BOOST_BINARY( 10111000 )
+, BOOST_BINARY( 10111001 )
+, BOOST_BINARY( 10111010 )
+, BOOST_BINARY( 10111011 )
+, BOOST_BINARY( 10111100 )
+, BOOST_BINARY( 10111101 )
+, BOOST_BINARY( 10111110 )
+, BOOST_BINARY( 10111111 )
+, BOOST_BINARY( 11000000 )
+, BOOST_BINARY( 11000001 )
+, BOOST_BINARY( 11000010 )
+, BOOST_BINARY( 11000011 )
+, BOOST_BINARY( 11000100 )
+, BOOST_BINARY( 11000101 )
+, BOOST_BINARY( 11000110 )
+, BOOST_BINARY( 11000111 )
+, BOOST_BINARY( 11001000 )
+, BOOST_BINARY( 11001001 )
+, BOOST_BINARY( 11001010 )
+, BOOST_BINARY( 11001011 )
+, BOOST_BINARY( 11001100 )
+, BOOST_BINARY( 11001101 )
+, BOOST_BINARY( 11001110 )
+, BOOST_BINARY( 11001111 )
+, BOOST_BINARY( 11010000 )
+, BOOST_BINARY( 11010001 )
+, BOOST_BINARY( 11010010 )
+, BOOST_BINARY( 11010011 )
+, BOOST_BINARY( 11010100 )
+, BOOST_BINARY( 11010101 )
+, BOOST_BINARY( 11010110 )
+, BOOST_BINARY( 11010111 )
+, BOOST_BINARY( 11011000 )
+, BOOST_BINARY( 11011001 )
+, BOOST_BINARY( 11011010 )
+, BOOST_BINARY( 11011011 )
+, BOOST_BINARY( 11011100 )
+, BOOST_BINARY( 11011101 )
+, BOOST_BINARY( 11011110 )
+, BOOST_BINARY( 11011111 )
+, BOOST_BINARY( 11100000 )
+, BOOST_BINARY( 11100001 )
+, BOOST_BINARY( 11100010 )
+, BOOST_BINARY( 11100011 )
+, BOOST_BINARY( 11100100 )
+, BOOST_BINARY( 11100101 )
+, BOOST_BINARY( 11100110 )
+, BOOST_BINARY( 11100111 )
+, BOOST_BINARY( 11101000 )
+, BOOST_BINARY( 11101001 )
+, BOOST_BINARY( 11101010 )
+, BOOST_BINARY( 11101011 )
+, BOOST_BINARY( 11101100 )
+, BOOST_BINARY( 11101101 )
+, BOOST_BINARY( 11101110 )
+, BOOST_BINARY( 11101111 )
+, BOOST_BINARY( 11110000 )
+, BOOST_BINARY( 11110001 )
+, BOOST_BINARY( 11110010 )
+, BOOST_BINARY( 11110011 )
+, BOOST_BINARY( 11110100 )
+, BOOST_BINARY( 11110101 )
+, BOOST_BINARY( 11110110 )
+, BOOST_BINARY( 11110111 )
+, BOOST_BINARY( 11111000 )
+, BOOST_BINARY( 11111001 )
+, BOOST_BINARY( 11111010 )
+, BOOST_BINARY( 11111011 )
+, BOOST_BINARY( 11111100 )
+, BOOST_BINARY( 11111101 )
+, BOOST_BINARY( 11111110 )
+, BOOST_BINARY( 11111111 )
+};
+
+struct left_is_not_one_less_than_right
+{
+  bool operator ()( unsigned int left, unsigned int right ) const
+  {
+    return right != left + 1;
+  }
+};
+
+template< std::size_t Size >
+bool is_ascending_from_0_array( unsigned int const (&array)[Size] )
+{
+  unsigned int const* const curr = array,
+                    * const end  = array + Size;
+
+  return    ( *curr == 0 )
+         && (    std::adjacent_find( curr, end
+                                   , left_is_not_one_less_than_right()
+                                   )
+              == end
+            );
+}
+
+std::size_t const unsigned_int_id = 1,
+                  unsigned_long_int_id = 2;
+
+typedef char (&unsigned_int_id_type)[unsigned_int_id];
+typedef char (&unsigned_long_int_id_type)[unsigned_long_int_id];
+
+// Note: Functions only used for type checking
+unsigned_int_id_type      binary_type_checker( unsigned int );
+unsigned_long_int_id_type binary_type_checker( unsigned long int );
+
+int main()
+{
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_1_bit ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_2_bits ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_3_bits ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_4_bits ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_5_bits ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_6_bits ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_7_bits ) );
+  BOOST_TEST( is_ascending_from_0_array( unsigned_ints_8_bits ) );
+
+  BOOST_TEST( std::equal( &random_unsigned_ints_hex[0]
+                         , random_unsigned_ints_hex + num_random_test_values
+                         , &random_unsigned_ints_binary[0]
+                         )
+             );
+
+  BOOST_TEST(    sizeof( binary_type_checker( BOOST_BINARY_U( 110100 1010 ) ) )
+               == unsigned_int_id
+             );
+
+  BOOST_TEST(    sizeof( binary_type_checker( BOOST_BINARY_UL( 11110 ) ) )
+               == unsigned_long_int_id
+             );
+
+  BOOST_TEST(    sizeof( binary_type_checker( BOOST_BINARY_LU( 10 0001 ) ) )
+               == unsigned_long_int_id
+             );
+
+  return boost::report_errors();
+}

test/call_traits_test.cpp

@@ -0,0 +1,418 @@
+//  boost::compressed_pair test program
+
+//  (C) Copyright John Maddock 2000.
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+
+
+// standalone test program for <boost/call_traits.hpp>
+// 18 Mar 2002:
+//    Changed some names to prevent conflicts with some new type_traits additions.
+// 03 Oct 2000:
+//    Enabled extra tests for VC6.
+
+#include <iostream>
+#include <iomanip>
+#include <algorithm>
+#include <typeinfo>
+#include <boost/call_traits.hpp>
+
+// type_traits/test utilities
+#include "check_type.hpp"
+
+#ifdef BOOST_MSVC
+#pragma warning(disable:4181) // : warning C4181: qualifier applied to reference type; ignored
+#endif
+
+// a way prevent warnings for unused variables
+template<class T> inline void unused_variable(const T&) {}
+
+//
+// struct contained models a type that contains a type (for example std::pair)
+// arrays are contained by value, and have to be treated as a special case:
+//
+template <class T>
+struct contained
+{
+   // define our typedefs first, arrays are stored by value
+   // so value_type is not the same as result_type:
+   typedef typename boost::call_traits<T>::param_type       param_type;
+   typedef typename boost::call_traits<T>::reference        reference;
+   typedef typename boost::call_traits<T>::const_reference  const_reference;
+   typedef T                                                value_type;
+   typedef typename boost::call_traits<T>::value_type       result_type;
+
+   // stored value:
+   value_type v_;
+
+   // constructors:
+   contained() {}
+   contained(param_type p) : v_(p){}
+   // return byval:
+   result_type value()const { return v_; }
+   // return by_ref:
+   reference get() { return v_; }
+   const_reference const_get()const { return v_; }
+   // pass value:
+   void call(param_type){}
+private:
+   contained& operator=(const contained&);
+};
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template <class T, std::size_t N>
+struct contained<T[N]>
+{
+   typedef typename boost::call_traits<T[N]>::param_type       param_type;
+   typedef typename boost::call_traits<T[N]>::reference        reference;
+   typedef typename boost::call_traits<T[N]>::const_reference  const_reference;
+   typedef T                                                   value_type[N];
+   typedef typename boost::call_traits<T[N]>::value_type       result_type;
+
+   value_type v_;
+
+   contained(param_type p)
+   {
+      std::copy(p, p+N, v_);
+   }
+   // return byval:
+   result_type value()const { return v_; }
+   // return by_ref:
+   reference get() { return v_; }
+   const_reference const_get()const { return v_; }
+   void call(param_type){}
+private:
+   contained& operator=(const contained&);
+};
+#endif
+
+template <class T>
+contained<typename boost::call_traits<T>::value_type> test_wrap_type(const T& t)
+{
+   typedef typename boost::call_traits<T>::value_type ct;
+   return contained<ct>(t);
+}
+
+namespace test{
+
+template <class T1, class T2>
+std::pair<
+   typename boost::call_traits<T1>::value_type,
+   typename boost::call_traits<T2>::value_type>
+      make_pair(const T1& t1, const T2& t2)
+{
+   return std::pair<
+      typename boost::call_traits<T1>::value_type,
+      typename boost::call_traits<T2>::value_type>(t1, t2);
+}
+
+} // namespace test
+
+using namespace std;
+
+//
+// struct call_traits_checker:
+// verifies behaviour of contained example:
+//
+template <class T>
+struct call_traits_checker
+{
+   typedef typename boost::call_traits<T>::param_type param_type;
+   void operator()(param_type);
+};
+
+template <class T>
+void call_traits_checker<T>::operator()(param_type p)
+{
+   T t(p);
+   contained<T> c(t);
+   cout << "checking contained<" << typeid(T).name() << ">..." << endl;
+   BOOST_CHECK(t == c.value());
+   BOOST_CHECK(t == c.get());
+   BOOST_CHECK(t == c.const_get());
+#ifndef __ICL
+   //cout << "typeof contained<" << typeid(T).name() << ">::v_ is:           " << typeid(&contained<T>::v_).name() << endl;
+   cout << "typeof contained<" << typeid(T).name() << ">::value() is:      " << typeid(&contained<T>::value).name() << endl;
+   cout << "typeof contained<" << typeid(T).name() << ">::get() is:        " << typeid(&contained<T>::get).name() << endl;
+   cout << "typeof contained<" << typeid(T).name() << ">::const_get() is:  " << typeid(&contained<T>::const_get).name() << endl;
+   cout << "typeof contained<" << typeid(T).name() << ">::call() is:       " << typeid(&contained<T>::call).name() << endl;
+   cout << endl;
+#endif
+}
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template <class T, std::size_t N>
+struct call_traits_checker<T[N]>
+{
+   typedef typename boost::call_traits<T[N]>::param_type param_type;
+   void operator()(param_type t)
+   {
+      contained<T[N]> c(t);
+      cout << "checking contained<" << typeid(T[N]).name() << ">..." << endl;
+      unsigned int i = 0;
+      for(i = 0; i < N; ++i)
+         BOOST_CHECK(t[i] == c.value()[i]);
+      for(i = 0; i < N; ++i)
+         BOOST_CHECK(t[i] == c.get()[i]);
+      for(i = 0; i < N; ++i)
+         BOOST_CHECK(t[i] == c.const_get()[i]);
+
+      cout << "typeof contained<" << typeid(T[N]).name() << ">::v_ is:         " << typeid(&contained<T[N]>::v_).name() << endl;
+      cout << "typeof contained<" << typeid(T[N]).name() << ">::value is:      " << typeid(&contained<T[N]>::value).name() << endl;
+      cout << "typeof contained<" << typeid(T[N]).name() << ">::get is:        " << typeid(&contained<T[N]>::get).name() << endl;
+      cout << "typeof contained<" << typeid(T[N]).name() << ">::const_get is:  " << typeid(&contained<T[N]>::const_get).name() << endl;
+      cout << "typeof contained<" << typeid(T[N]).name() << ">::call is:       " << typeid(&contained<T[N]>::call).name() << endl;
+      cout << endl;
+   }
+};
+#endif
+
+//
+// check_wrap:
+template <class W, class U>
+void check_wrap(const W& w, const U& u)
+{
+   cout << "checking " << typeid(W).name() << "..." << endl;
+   BOOST_CHECK(w.value() == u);
+}
+
+//
+// check_make_pair:
+// verifies behaviour of "make_pair":
+//
+template <class T, class U, class V>
+void check_make_pair(T c, U u, V v)
+{
+   cout << "checking std::pair<" << typeid(c.first).name() << ", " << typeid(c.second).name() << ">..." << endl;
+   BOOST_CHECK(c.first == u);
+   BOOST_CHECK(c.second == v);
+   cout << endl;
+}
+
+
+struct comparible_UDT
+{
+   int i_;
+   comparible_UDT() : i_(2){}
+   comparible_UDT(const comparible_UDT& other) : i_(other.i_){}
+   comparible_UDT& operator=(const comparible_UDT& other)
+   {
+      i_ = other.i_;
+      return *this;
+   }
+   bool operator == (const comparible_UDT& v) const { return v.i_ == i_; }
+};
+
+int main()
+{
+   call_traits_checker<comparible_UDT> c1;
+   comparible_UDT u;
+   c1(u);
+   call_traits_checker<int> c2;
+   call_traits_checker<enum_UDT> c2b;
+   int i = 2;
+   c2(i);
+   c2b(one);
+   int* pi = &i;
+   int a[2] = {1,2};
+#if defined(BOOST_MSVC6_MEMBER_TEMPLATES) && !defined(__ICL)
+   call_traits_checker<int*> c3;
+   c3(pi);
+   call_traits_checker<int&> c4;
+   c4(i);
+   call_traits_checker<const int&> c5;
+   c5(i);
+#if !defined (BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__MWERKS__) && !defined(__SUNPRO_CC)
+   call_traits_checker<int[2]> c6;
+   c6(a);
+#endif
+#endif
+
+   check_wrap(test_wrap_type(2), 2);
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC)
+   check_wrap(test_wrap_type(a), a);
+   check_make_pair(test::make_pair(a, a), a, a);
+#endif
+
+   // cv-qualifiers applied to reference types should have no effect
+   // declare these here for later use with is_reference and remove_reference:
+   typedef int& r_type;
+   typedef const r_type cr_type;
+
+   BOOST_CHECK_TYPE(comparible_UDT, boost::call_traits<comparible_UDT>::value_type);
+   BOOST_CHECK_TYPE(comparible_UDT&, boost::call_traits<comparible_UDT>::reference);
+   BOOST_CHECK_TYPE(const comparible_UDT&, boost::call_traits<comparible_UDT>::const_reference);
+   BOOST_CHECK_TYPE(const comparible_UDT&, boost::call_traits<comparible_UDT>::param_type);
+   BOOST_CHECK_TYPE(int, boost::call_traits<int>::value_type);
+   BOOST_CHECK_TYPE(int&, boost::call_traits<int>::reference);
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<int>::const_reference);
+   BOOST_CHECK_TYPE(const int, boost::call_traits<int>::param_type);
+   BOOST_CHECK_TYPE(int*, boost::call_traits<int*>::value_type);
+   BOOST_CHECK_TYPE(int*&, boost::call_traits<int*>::reference);
+   BOOST_CHECK_TYPE(int*const&, boost::call_traits<int*>::const_reference);
+   BOOST_CHECK_TYPE(int*const, boost::call_traits<int*>::param_type);
+#if defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+   BOOST_CHECK_TYPE(int&, boost::call_traits<int&>::value_type);
+   BOOST_CHECK_TYPE(int&, boost::call_traits<int&>::reference);
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<int&>::const_reference);
+   BOOST_CHECK_TYPE(int&, boost::call_traits<int&>::param_type);
+#if !(defined(__GNUC__) && ((__GNUC__ < 3) || (__GNUC__ == 3) && (__GNUC_MINOR__ < 1)))
+   BOOST_CHECK_TYPE(int&, boost::call_traits<cr_type>::value_type);
+   BOOST_CHECK_TYPE(int&, boost::call_traits<cr_type>::reference);
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<cr_type>::const_reference);
+   BOOST_CHECK_TYPE(int&, boost::call_traits<cr_type>::param_type);
+#else
+   std::cout << "Your compiler cannot instantiate call_traits<int&const>, skipping four tests (4 errors)" << std::endl;
+#endif
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::value_type);
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::reference);
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::const_reference);
+   BOOST_CHECK_TYPE(const int&, boost::call_traits<const int&>::param_type);
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+   BOOST_CHECK_TYPE(const int*, boost::call_traits<int[3]>::value_type);
+   BOOST_CHECK_TYPE(int(&)[3], boost::call_traits<int[3]>::reference);
+   BOOST_CHECK_TYPE(const int(&)[3], boost::call_traits<int[3]>::const_reference);
+   BOOST_CHECK_TYPE(const int*const, boost::call_traits<int[3]>::param_type);
+   BOOST_CHECK_TYPE(const int*, boost::call_traits<const int[3]>::value_type);
+   BOOST_CHECK_TYPE(const int(&)[3], boost::call_traits<const int[3]>::reference);
+   BOOST_CHECK_TYPE(const int(&)[3], boost::call_traits<const int[3]>::const_reference);
+   BOOST_CHECK_TYPE(const int*const, boost::call_traits<const int[3]>::param_type);
+   // test with abstract base class:
+   BOOST_CHECK_TYPE(test_abc1, boost::call_traits<test_abc1>::value_type);
+   BOOST_CHECK_TYPE(test_abc1&, boost::call_traits<test_abc1>::reference);
+   BOOST_CHECK_TYPE(const test_abc1&, boost::call_traits<test_abc1>::const_reference);
+   BOOST_CHECK_TYPE(const test_abc1&, boost::call_traits<test_abc1>::param_type);
+#else
+   std::cout << "You're compiler does not support partial template specialiation, skipping 8 tests (8 errors)" << std::endl;
+#endif
+#else
+   std::cout << "You're compiler does not support partial template specialiation, skipping 20 tests (20 errors)" << std::endl;
+#endif
+   // test with an incomplete type:
+   BOOST_CHECK_TYPE(incomplete_type, boost::call_traits<incomplete_type>::value_type);
+   BOOST_CHECK_TYPE(incomplete_type&, boost::call_traits<incomplete_type>::reference);
+   BOOST_CHECK_TYPE(const incomplete_type&, boost::call_traits<incomplete_type>::const_reference);
+   BOOST_CHECK_TYPE(const incomplete_type&, boost::call_traits<incomplete_type>::param_type);
+   // test enum:
+   BOOST_CHECK_TYPE(enum_UDT, boost::call_traits<enum_UDT>::value_type);
+   BOOST_CHECK_TYPE(enum_UDT&, boost::call_traits<enum_UDT>::reference);
+   BOOST_CHECK_TYPE(const enum_UDT&, boost::call_traits<enum_UDT>::const_reference);
+   BOOST_CHECK_TYPE(const enum_UDT, boost::call_traits<enum_UDT>::param_type);
+   return 0;
+}
+
+//
+// define call_traits tests to check that the assertions in the docs do actually work
+// this is an compile-time only set of tests:
+//
+template <typename T, bool isarray = false>
+struct call_traits_test
+{
+   typedef ::boost::call_traits<T> ct;
+   typedef typename ct::param_type param_type;
+   typedef typename ct::reference reference;
+   typedef typename ct::const_reference const_reference;
+   typedef typename ct::value_type value_type;
+   static void assert_construct(param_type val);
+};
+
+template <typename T, bool isarray>
+void call_traits_test<T, isarray>::assert_construct(typename call_traits_test<T, isarray>::param_type val)
+{
+   //
+   // this is to check that the call_traits assertions are valid:
+   T t(val);
+   value_type v(t);
+   reference r(t);
+   const_reference cr(t);
+   param_type p(t);
+   value_type v2(v);
+   value_type v3(r);
+   value_type v4(p);
+   reference r2(v);
+   reference r3(r);
+   const_reference cr2(v);
+   const_reference cr3(r);
+   const_reference cr4(cr);
+   const_reference cr5(p);
+   param_type p2(v);
+   param_type p3(r);
+   param_type p4(p);
+
+   unused_variable(v2);
+   unused_variable(v3);
+   unused_variable(v4);
+   unused_variable(r2);
+   unused_variable(r3);
+   unused_variable(cr2);
+   unused_variable(cr3);
+   unused_variable(cr4);
+   unused_variable(cr5);
+   unused_variable(p2);
+   unused_variable(p3);
+   unused_variable(p4);
+}
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+template <typename T>
+struct call_traits_test<T, true>
+{
+   typedef ::boost::call_traits<T> ct;
+   typedef typename ct::param_type param_type;
+   typedef typename ct::reference reference;
+   typedef typename ct::const_reference const_reference;
+   typedef typename ct::value_type value_type;
+   static void assert_construct(param_type val);
+};
+
+template <typename T>
+void call_traits_test<T, true>::assert_construct(typename boost::call_traits<T>::param_type val)
+{
+   //
+   // this is to check that the call_traits assertions are valid:
+   T t;
+   value_type v(t);
+   value_type v5(val);
+   reference r = t;
+   const_reference cr = t;
+   reference r2 = r;
+   #ifndef BOOST_BORLANDC
+   // C++ Builder buglet:
+   const_reference cr2 = r;
+   #endif
+   param_type p(t);
+   value_type v2(v);
+   const_reference cr3 = cr;
+   value_type v3(r);
+   value_type v4(p);
+   param_type p2(v);
+   param_type p3(r);
+   param_type p4(p);
+
+   unused_variable(v2);
+   unused_variable(v3);
+   unused_variable(v4);
+   unused_variable(v5);
+#ifndef BOOST_BORLANDC
+   unused_variable(r2);
+   unused_variable(cr2);
+#endif
+   unused_variable(cr3);
+   unused_variable(p2);
+   unused_variable(p3);
+   unused_variable(p4);
+}
+#endif //BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+//
+// now check call_traits assertions by instantiating call_traits_test:
+template struct call_traits_test<int>;
+template struct call_traits_test<const int>;
+template struct call_traits_test<int*>;
+#if defined(BOOST_MSVC6_MEMBER_TEMPLATES)
+template struct call_traits_test<int&>;
+template struct call_traits_test<const int&>;
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC)
+template struct call_traits_test<int[2], true>;
+#endif
+#endif
+

test/compressed_pair_final_test.cpp

@@ -0,0 +1,55 @@
+/*
+Copyright 2018 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_FINAL)
+#include <boost/compressed_pair.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+struct type1 {
+    operator bool() const {
+        return false;
+    }
+};
+
+struct type2 final {
+    operator bool() const {
+        return false;
+    }
+};
+
+#if !defined(BOOST_IS_FINAL)
+namespace boost {
+
+template<>
+struct is_final<type2>
+    : true_type { };
+
+} /* boost*/
+#endif
+
+template<class T1, class T2>
+void test()
+{
+    boost::compressed_pair<T1, T2> p;
+    BOOST_TEST(!p.first());
+    BOOST_TEST(!p.second());
+}
+
+int main()
+{
+    test<type1, type2>();
+    test<type2, type1>();
+    test<type2, type2>();
+    return boost::report_errors();
+}
+#else
+int main()
+{
+    return 0;
+}
+#endif

test/compressed_pair_test.cpp

@@ -0,0 +1,387 @@
+//  boost::compressed_pair test program   
+    
+//  (C) Copyright John Maddock 2000. 
+//  Use, modification and distribution are subject to the Boost Software License,
+//  Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt).
+
+// standalone test program for <boost/compressed_pair.hpp>
+// Revised 03 Oct 2000: 
+//    Enabled tests for VC6.
+
+#include <iostream>
+#include <typeinfo>
+#include <cassert>
+
+#include <boost/compressed_pair.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+using namespace boost;
+
+struct empty_UDT
+{
+   ~empty_UDT(){};
+   empty_UDT& operator=(const empty_UDT&){ return *this; }
+   bool operator==(const empty_UDT&)const
+   { return true; }
+};
+struct empty_POD_UDT
+{
+   empty_POD_UDT& operator=(const empty_POD_UDT&){ return *this; }
+   bool operator==(const empty_POD_UDT&)const
+   { return true; }
+};
+
+struct non_empty1
+{ 
+   int i;
+   non_empty1() : i(1){}
+   non_empty1(int v) : i(v){}
+   friend bool operator==(const non_empty1& a, const non_empty1& b)
+   { return a.i == b.i; }
+};
+
+struct non_empty2
+{ 
+   int i;
+   non_empty2() : i(3){}
+   non_empty2(int v) : i(v){}
+   friend bool operator==(const non_empty2& a, const non_empty2& b)
+   { return a.i == b.i; }
+};
+
+#ifdef __GNUC__
+using std::swap;
+#endif
+
+template <class T1, class T2>
+struct compressed_pair_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4)
+{
+#ifndef __GNUC__
+   // gcc 2.90 can't cope with function scope using
+   // declarations, and generates an internal compiler error...
+   using std::swap;
+#endif
+   // default construct:
+   boost::compressed_pair<T1,T2> cp1;
+   // first param construct:
+   boost::compressed_pair<T1,T2> cp2(p1);
+   cp2.second() = p2;
+   BOOST_TEST(cp2.first() == p1);
+   BOOST_TEST(cp2.second() == p2);
+   // second param construct:
+   boost::compressed_pair<T1,T2> cp3(p2);
+   cp3.first() = p1;
+   BOOST_TEST(cp3.second() == p2);
+   BOOST_TEST(cp3.first() == p1);
+   // both param construct:
+   boost::compressed_pair<T1,T2> cp4(p1, p2);
+   BOOST_TEST(cp4.first() == p1);
+   BOOST_TEST(cp4.second() == p2);
+   boost::compressed_pair<T1,T2> cp5(p3, p4);
+   BOOST_TEST(cp5.first() == p3);
+   BOOST_TEST(cp5.second() == p4);
+   // check const members:
+   const boost::compressed_pair<T1,T2>& cpr1 = cp4;
+   BOOST_TEST(cpr1.first() == p1);
+   BOOST_TEST(cpr1.second() == p2);
+
+   // copy construct:
+   boost::compressed_pair<T1,T2> cp6(cp4);
+   BOOST_TEST(cp6.first() == p1);
+   BOOST_TEST(cp6.second() == p2);
+   // assignment:
+   cp1 = cp4;
+   BOOST_TEST(cp1.first() == p1);
+   BOOST_TEST(cp1.second() == p2);
+   cp1 = cp5;
+   BOOST_TEST(cp1.first() == p3);
+   BOOST_TEST(cp1.second() == p4);
+   // swap:
+   cp4.swap(cp5);
+   BOOST_TEST(cp4.first() == p3);
+   BOOST_TEST(cp4.second() == p4);
+   BOOST_TEST(cp5.first() == p1);
+   BOOST_TEST(cp5.second() == p2);
+   swap(cp4,cp5);
+   BOOST_TEST(cp4.first() == p1);
+   BOOST_TEST(cp4.second() == p2);
+   BOOST_TEST(cp5.first() == p3);
+   BOOST_TEST(cp5.second() == p4);
+}
+
+//
+// tests for case where one or both 
+// parameters are reference types:
+//
+template <class T1, class T2>
+struct compressed_pair_reference_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_reference_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4)
+{
+#ifndef __GNUC__
+   // gcc 2.90 can't cope with function scope using
+   // declarations, and generates an internal compiler error...
+   using std::swap;
+#endif
+   // both param construct:
+   boost::compressed_pair<T1,T2> cp4(p1, p2);
+   BOOST_TEST(cp4.first() == p1);
+   BOOST_TEST(cp4.second() == p2);
+   boost::compressed_pair<T1,T2> cp5(p3, p4);
+   BOOST_TEST(cp5.first() == p3);
+   BOOST_TEST(cp5.second() == p4);
+   // check const members:
+   const boost::compressed_pair<T1,T2>& cpr1 = cp4;
+   BOOST_TEST(cpr1.first() == p1);
+   BOOST_TEST(cpr1.second() == p2);
+
+   // copy construct:
+   boost::compressed_pair<T1,T2> cp6(cp4);
+   BOOST_TEST(cp6.first() == p1);
+   BOOST_TEST(cp6.second() == p2);
+   // assignment:
+   // VC6 bug:
+   // When second() is an empty class, VC6 performs the
+   // assignment by doing a memcpy - even though the empty
+   // class is really a zero sized base class, the result
+   // is that the memory of first() gets trampled over.
+   // Similar arguments apply to the case that first() is 
+   // an empty base class.
+   // Strangely the problem is dependent upon the compiler
+   // settings - some generate the problem others do not.
+   cp4.first() = p3;
+   cp4.second() = p4;
+   BOOST_TEST(cp4.first() == p3);
+   BOOST_TEST(cp4.second() == p4);
+}
+//
+// supplimentary tests for case where first arg only is a reference type:
+//
+template <class T1, class T2>
+struct compressed_pair_reference1_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_reference1_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type, second_param_type)
+{
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+   // first param construct:
+   boost::compressed_pair<T1,T2> cp2(p1);
+   cp2.second() = p2;
+   BOOST_TEST(cp2.first() == p1);
+   BOOST_TEST(cp2.second() == p2);
+#endif
+}
+//
+// supplimentary tests for case where second arg only is a reference type:
+//
+template <class T1, class T2>
+struct compressed_pair_reference2_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_reference2_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type, second_param_type)
+{
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+   // second param construct:
+   boost::compressed_pair<T1,T2> cp3(p2);
+   cp3.first() = p1;
+   BOOST_TEST(cp3.second() == p2);
+   BOOST_TEST(cp3.first() == p1);
+#endif
+}
+
+//
+// tests for where one or the other parameter is an array:
+//
+template <class T1, class T2>
+struct compressed_pair_array1_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_array1_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type, second_param_type)
+{
+  // default construct:
+   boost::compressed_pair<T1,T2> cp1;
+   // second param construct:
+   boost::compressed_pair<T1,T2> cp3(p2);
+   cp3.first()[0] = p1[0];
+   BOOST_TEST(cp3.second() == p2);
+   BOOST_TEST(cp3.first()[0] == p1[0]);
+   // check const members:
+   const boost::compressed_pair<T1,T2>& cpr1 = cp3;
+   BOOST_TEST(cpr1.first()[0] == p1[0]);
+   BOOST_TEST(cpr1.second() == p2);
+
+   BOOST_TEST(sizeof(T1) == sizeof(cp1.first()));
+}
+
+template <class T1, class T2>
+struct compressed_pair_array2_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_array2_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type, second_param_type)
+{
+   // default construct:
+   boost::compressed_pair<T1,T2> cp1;
+   // first param construct:
+   boost::compressed_pair<T1,T2> cp2(p1);
+   cp2.second()[0] = p2[0];
+   BOOST_TEST(cp2.first() == p1);
+   BOOST_TEST(cp2.second()[0] == p2[0]);
+   // check const members:
+   const boost::compressed_pair<T1,T2>& cpr1 = cp2;
+   BOOST_TEST(cpr1.first() == p1);
+   BOOST_TEST(cpr1.second()[0] == p2[0]);
+
+   BOOST_TEST(sizeof(T2) == sizeof(cp1.second()));
+}
+
+template <class T1, class T2>
+struct compressed_pair_array_tester
+{
+   // define the types we need:
+   typedef T1                                                 first_type;
+   typedef T2                                                 second_type;
+   typedef typename call_traits<first_type>::param_type       first_param_type;
+   typedef typename call_traits<second_type>::param_type      second_param_type;
+   // define our test proc:
+   static void test(first_param_type p1, second_param_type p2, first_param_type p3, second_param_type p4);
+};
+
+template <class T1, class T2>
+void compressed_pair_array_tester<T1, T2>::test(first_param_type p1, second_param_type p2, first_param_type, second_param_type)
+{
+   // default construct:
+   boost::compressed_pair<T1,T2> cp1;
+   cp1.first()[0] = p1[0];
+   cp1.second()[0] = p2[0];
+   BOOST_TEST(cp1.first()[0] == p1[0]);
+   BOOST_TEST(cp1.second()[0] == p2[0]);
+   // check const members:
+   const boost::compressed_pair<T1,T2>& cpr1 = cp1;
+   BOOST_TEST(cpr1.first()[0] == p1[0]);
+   BOOST_TEST(cpr1.second()[0] == p2[0]);
+
+   BOOST_TEST(sizeof(T1) == sizeof(cp1.first()));
+   BOOST_TEST(sizeof(T2) == sizeof(cp1.second()));
+}
+
+int main()
+{
+   // declare some variables to pass to the tester:
+   non_empty1 ne1(2);
+   non_empty1 ne2(3);
+   non_empty2 ne3(4);
+   non_empty2 ne4(5);
+   empty_POD_UDT  e1;
+   empty_UDT      e2;
+
+   // T1 != T2, both non-empty
+   compressed_pair_tester<non_empty1,non_empty2>::test(ne1, ne3, ne2, ne4);
+   // T1 != T2, T2 empty
+   compressed_pair_tester<non_empty1,empty_POD_UDT>::test(ne1, e1, ne2, e1);
+   // T1 != T2, T1 empty
+   compressed_pair_tester<empty_POD_UDT,non_empty2>::test(e1, ne3, e1, ne4);
+   // T1 != T2, both empty
+   compressed_pair_tester<empty_POD_UDT,empty_UDT>::test(e1, e2, e1, e2);
+   // T1 == T2, both non-empty
+   compressed_pair_tester<non_empty1,non_empty1>::test(ne1, ne1, ne2, ne2);
+   // T1 == T2, both empty
+   compressed_pair_tester<empty_UDT,empty_UDT>::test(e2, e2, e2, e2);
+
+
+   // test references:
+
+   // T1 != T2, both non-empty
+   compressed_pair_reference_tester<non_empty1&,non_empty2>::test(ne1, ne3, ne2, ne4);
+   compressed_pair_reference_tester<non_empty1,non_empty2&>::test(ne1, ne3, ne2, ne4);
+   compressed_pair_reference1_tester<non_empty1&,non_empty2>::test(ne1, ne3, ne2, ne4);
+   compressed_pair_reference2_tester<non_empty1,non_empty2&>::test(ne1, ne3, ne2, ne4);
+   // T1 != T2, T2 empty
+   compressed_pair_reference_tester<non_empty1&,empty_POD_UDT>::test(ne1, e1, ne2, e1);
+   compressed_pair_reference1_tester<non_empty1&,empty_POD_UDT>::test(ne1, e1, ne2, e1);
+   // T1 != T2, T1 empty
+   compressed_pair_reference_tester<empty_POD_UDT,non_empty2&>::test(e1, ne3, e1, ne4);
+   compressed_pair_reference2_tester<empty_POD_UDT,non_empty2&>::test(e1, ne3, e1, ne4);
+   // T1 == T2, both non-empty
+   compressed_pair_reference_tester<non_empty1&,non_empty1&>::test(ne1, ne1, ne2, ne2);
+
+   // tests arrays:
+   non_empty1 nea1[2];
+   non_empty1 nea2[2];
+   non_empty2 nea3[2];
+   non_empty2 nea4[2];
+   nea1[0] = non_empty1(5);
+   nea2[0] = non_empty1(6);
+   nea3[0] = non_empty2(7);
+   nea4[0] = non_empty2(8);
+   
+   // T1 != T2, both non-empty
+   compressed_pair_array1_tester<non_empty1[2],non_empty2>::test(nea1, ne3, nea2, ne4);
+   compressed_pair_array2_tester<non_empty1,non_empty2[2]>::test(ne1, nea3, ne2, nea4);
+   compressed_pair_array_tester<non_empty1[2],non_empty2[2]>::test(nea1, nea3, nea2, nea4);
+   // T1 != T2, T2 empty
+   compressed_pair_array1_tester<non_empty1[2],empty_POD_UDT>::test(nea1, e1, nea2, e1);
+   // T1 != T2, T1 empty
+   compressed_pair_array2_tester<empty_POD_UDT,non_empty2[2]>::test(e1, nea3, e1, nea4);
+   // T1 == T2, both non-empty
+   compressed_pair_array_tester<non_empty1[2],non_empty1[2]>::test(nea1, nea1, nea2, nea2);
+   return boost::report_errors();
+}

test/initialized_test.cpp

@@ -0,0 +1,116 @@
+// Copyright 2010, Niels Dekker.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// Test program for boost::initialized<T>.
+//
+// 2 May 2010 (Created) Niels Dekker
+
+#include <boost/utility/value_init.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+#include <string>
+
+namespace
+{
+  // Typical use case for boost::initialized<T>: A generic class that 
+  // holds a value of type T, which must be initialized by either 
+  // value-initialization or direct-initialization.
+  template <class T> class key_value_pair
+  {
+    std::string m_key;
+    boost::initialized<T> m_value;
+  public:
+ 
+    // Value-initializes the object held by m_value.
+    key_value_pair() { }
+
+    // Value-initializes the object held by m_value.
+    explicit key_value_pair(const std::string& key)
+    :
+    m_key(key)
+    {
+    }
+
+    // Direct-initializes the object held by m_value.
+    key_value_pair(const std::string& key, const T& value)
+    :
+    m_key(key), m_value(value)
+    {
+    }
+
+    const T& get_value() const
+    {
+      return m_value;
+    }
+  };
+
+
+  // Tells whether the argument is value-initialized.
+  bool is_value_initialized(const int& arg)
+  {
+    return arg == 0;
+  }
+
+
+  // Tells whether the argument is value-initialized.
+  bool is_value_initialized(const std::string& arg)
+  {
+    return arg.empty();
+  }
+
+  struct foo
+  {
+    int data;
+  };
+
+  bool operator==(const foo& lhs, const foo& rhs)
+  {
+    return lhs.data == rhs.data;
+  }
+
+
+  // Tells whether the argument is value-initialized.
+  bool is_value_initialized(const foo& arg)
+  {
+    return arg.data == 0;
+  }
+
+
+  template <class T>
+  void test_key_value_pair(const T& magic_value)
+  {
+    // The value component of a default key_value_pair must be value-initialized.
+    key_value_pair<T> default_key_value_pair;
+    BOOST_TEST( is_value_initialized(default_key_value_pair.get_value() ) );
+
+    // The value component of a key_value_pair that only has its key explicitly specified
+    // must also be value-initialized.
+    BOOST_TEST( is_value_initialized(key_value_pair<T>("key").get_value()) );
+
+    // However, the value component of the following key_value_pair must be 
+    // "magic_value", as it must be direct-initialized.
+    BOOST_TEST( key_value_pair<T>("key", magic_value).get_value() == magic_value );
+  }
+}
+
+
+// Tests boost::initialize for a fundamental type, a type with a
+// user-defined constructor, and a user-defined type without 
+// a user-defined constructor.
+int main()
+{
+
+  const int magic_number = 42;
+  test_key_value_pair(magic_number);
+
+  const std::string magic_string = "magic value";
+  test_key_value_pair(magic_string);
+
+  const foo magic_foo = { 42 };
+  test_key_value_pair(magic_foo);
+
+  return boost::report_errors();
+}

test/initialized_test_fail1.cpp

@@ -0,0 +1,33 @@
+// Copyright 2010, Niels Dekker.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// Test program for boost::initialized<T>. Must fail to compile.
+//
+// Initial: 2 May 2010
+
+#include <boost/utility/value_init.hpp>
+
+namespace
+{
+  void direct_initialize_from_int()
+  {
+    // Okay: initialized<T> supports direct-initialization from T.
+    boost::initialized<int> direct_initialized_int(1);
+  }
+
+  void copy_initialize_from_int()
+  {
+    // The following line should not compile, because initialized<T> 
+    // was not intended to supports copy-initialization from T.
+    boost::initialized<int> copy_initialized_int = 1;
+  }
+}
+
+int main()
+{
+  // This should fail to compile, so there is no need to call any function.
+  return 0;
+}

test/initialized_test_fail2.cpp

@@ -0,0 +1,37 @@
+// Copyright 2010, Niels Dekker.
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// Test program for boost::initialized<T>. Must fail to compile.
+//
+// Initial: 2 May 2010
+
+#include <boost/utility/value_init.hpp>
+
+namespace
+{
+  void from_value_initialized_to_initialized()
+  {
+    boost::value_initialized<int> value_initialized_int;
+
+    // Okay: initialized<T> can be initialized by value_initialized<T>.
+    boost::initialized<int> initialized_int(value_initialized_int);
+  }
+
+  void from_initialized_to_value_initialized()
+  {
+    boost::initialized<int> initialized_int(13);
+
+    // The following line should not compile, because initialized<T>
+    // should not be convertible to value_initialized<T>.
+    boost::value_initialized<int> value_initialized_int(initialized_int);
+  }
+}
+
+int main()
+{
+  // This should fail to compile, so there is no need to call any function.
+  return 0;
+}

test/iterators_test.cpp

@@ -0,0 +1,322 @@
+//  Demonstrate and test boost/operators.hpp on std::iterators  --------------//
+
+//  (C) Copyright Jeremy Siek 1999.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for most recent version including documentation.
+
+//  Revision History
+//  29 May 01 Factored implementation, added comparison tests, use Test Tools
+//            library (Daryle Walker)
+//  12 Dec 99 Initial version with iterator operators (Jeremy Siek)
+
+#include <boost/core/lightweight_test.hpp>
+
+#include <boost/config.hpp>     // for BOOST_STATIC_CONSTANT
+#include <boost/operators.hpp>  // for boost::random_access_iterator_helper
+
+#include <cstddef>    // for std::ptrdiff_t, std::size_t
+#include <cstring>    // for std::strcmp
+#include <iostream>   // for std::cout (std::endl, ends, and flush indirectly)
+#include <string>     // for std::string
+#include <sstream>    // for std::stringstream
+
+# ifdef BOOST_NO_STDC_NAMESPACE
+    namespace std { using ::strcmp; }
+# endif
+
+
+// Iterator test class
+template <class T, class R, class P>
+struct test_iter
+  : public boost::random_access_iterator_helper<
+     test_iter<T,R,P>, T, std::ptrdiff_t, P, R>
+{
+  typedef test_iter self;
+  typedef R Reference;
+  typedef std::ptrdiff_t Distance;
+
+public:
+  explicit test_iter(T* i =0) : _i(i) { }
+  test_iter(const self& x) : _i(x._i) { }
+  self& operator=(const self& x) { _i = x._i; return *this; }
+  Reference operator*() const { return *_i; }
+  self& operator++() { ++_i; return *this; }
+  self& operator--() { --_i; return *this; }
+  self& operator+=(Distance n) { _i += n; return *this; }
+  self& operator-=(Distance n) { _i -= n; return *this; }
+  bool operator==(const self& x) const { return _i == x._i; }
+  bool operator<(const self& x) const { return _i < x._i; }
+  friend Distance operator-(const self& x, const self& y) {
+    return x._i - y._i; 
+  }
+protected:
+  P _i;
+};
+
+// Iterator operator testing classes
+class test_opr_base
+{
+protected:
+    // Test data and types
+    BOOST_STATIC_CONSTANT( std::size_t, fruit_length = 6u );
+
+    typedef std::string  fruit_array_type[ fruit_length ];
+
+    static  fruit_array_type    fruit;
+
+};  // test_opr_base
+
+#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
+//  A definition is required even for integral static constants
+const std::size_t test_opr_base::fruit_length;
+#endif
+
+template <typename T, typename R = T&, typename P = T*>
+class test_opr
+    : public test_opr_base
+{
+    typedef test_opr<T, R, P>  self_type;
+
+public:
+    // Types
+    typedef T  value_type;
+    typedef R  reference;
+    typedef P  pointer;
+
+    typedef test_iter<T, R, P>  iter_type;
+
+    // Test controller
+    static  void  master_test( char const name[] );
+
+private:
+    // Test data
+    static iter_type const  fruit_begin;
+    static iter_type const  fruit_end;
+
+    // Test parts
+    static  void  post_increment_test();
+    static  void  post_decrement_test();
+    static  void  indirect_referral_test();
+    static  void  offset_addition_test();
+    static  void  reverse_offset_addition_test();
+    static  void  offset_subtraction_test();
+    static  void  comparison_test();
+    static  void  indexing_test();
+
+};  // test_opr
+
+
+// Class-static data definitions
+test_opr_base::fruit_array_type
+ test_opr_base::fruit = { "apple", "orange", "pear", "peach", "grape", "plum" };
+
+template <typename T, typename R, typename P>
+  typename test_opr<T, R, P>::iter_type const
+ test_opr<T, R, P>::fruit_begin = test_iter<T,R,P>( fruit );
+
+template <typename T, typename R, typename P>
+typename test_opr<T, R, P>::iter_type const
+ test_opr<T, R, P>::fruit_end = test_iter<T,R,P>( fruit + fruit_length );
+
+
+// Main testing function
+int
+main()
+{
+    using std::string;
+
+    typedef test_opr<string, string &, string *>              test1_type;
+    typedef test_opr<string, string const &, string const *>  test2_type;
+
+    test1_type::master_test( "non-const string" );
+    test2_type::master_test( "const string" );
+
+    return boost::report_errors();
+}
+
+// Tests for all of the operators added by random_access_iterator_helper
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::master_test
+(
+    char const  name[]
+)
+{
+    std::cout << "Doing test run for " << name << '.' << std::endl;
+
+    post_increment_test();
+    post_decrement_test();
+    indirect_referral_test();
+    offset_addition_test();
+    reverse_offset_addition_test();
+    offset_subtraction_test();
+    comparison_test();
+    indexing_test();
+}
+
+// Test post-increment
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::post_increment_test
+(
+)
+{
+    std::cout << "\tDoing post-increment test." << std::endl;
+
+    std::stringstream oss;
+    for ( iter_type i = fruit_begin ; i != fruit_end ; )
+    {
+        oss << *i++ << ' ';
+    }
+
+    BOOST_TEST( oss.str() == "apple orange pear peach grape plum ");
+}
+
+// Test post-decrement
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::post_decrement_test
+(
+)
+{
+    std::cout << "\tDoing post-decrement test." << std::endl;
+
+    std::stringstream oss;
+    for ( iter_type i = fruit_end ; i != fruit_begin ; )
+    {
+        i--;
+        oss << *i << ' ';
+    }
+
+    BOOST_TEST( oss.str() == "plum grape peach pear orange apple ");
+}
+
+// Test indirect structure referral
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::indirect_referral_test
+(
+)
+{
+    std::cout << "\tDoing indirect reference test." << std::endl;
+
+    std::stringstream oss;
+    for ( iter_type i = fruit_begin ; i != fruit_end ; ++i )
+    {
+        oss << i->size() << ' ';
+    }
+
+    BOOST_TEST( oss.str() == "5 6 4 5 5 4 ");
+}
+
+// Test offset addition
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::offset_addition_test
+(
+)
+{
+    std::cout << "\tDoing offset addition test." << std::endl;
+
+    std::ptrdiff_t const  two = 2;
+    std::stringstream oss;
+    for ( iter_type i = fruit_begin ; i != fruit_end ; i = i + two )
+    {
+        oss << *i << ' ';
+    }
+
+    BOOST_TEST( oss.str() == "apple pear grape ");
+}
+
+// Test offset addition, in reverse order
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::reverse_offset_addition_test
+(
+)
+{
+    std::cout << "\tDoing reverse offset addition test." << std::endl;
+
+    std::ptrdiff_t const  two = 2;
+    std::stringstream oss;
+    for ( iter_type i = fruit_begin ; i != fruit_end ; i = two + i )
+    {
+        oss << *i << ' ';
+    }
+
+    BOOST_TEST( oss.str() == "apple pear grape ");
+}
+
+// Test offset subtraction
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::offset_subtraction_test
+(
+)
+{
+    std::cout << "\tDoing offset subtraction test." << std::endl;
+
+    std::ptrdiff_t const  two = 2;
+    std::stringstream oss;
+    for ( iter_type i = fruit_end ; fruit_begin < i ; )
+    {
+        i = i - two;
+        if ( (fruit_begin < i) || (fruit_begin == i) )
+        {
+            oss << *i << ' ';
+        }
+    }
+
+    BOOST_TEST( oss.str() == "grape pear apple ");
+}
+
+// Test comparisons
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::comparison_test
+(
+)
+{
+    using std::cout;
+    using std::ptrdiff_t;
+
+    cout << "\tDoing comparison tests.\n\t\tPass:";
+
+    for ( iter_type i = fruit_begin ; i != fruit_end ; ++i )
+    {
+        ptrdiff_t const  i_offset = i - fruit_begin;
+
+        cout << ' ' << *i << std::flush;
+        for ( iter_type j = fruit_begin ; j != fruit_end ; ++j )
+        {
+            ptrdiff_t const  j_offset = j - fruit_begin;
+
+            BOOST_TEST( (i != j) == (i_offset != j_offset) );
+            BOOST_TEST( (i > j) == (i_offset > j_offset) );
+            BOOST_TEST( (i <= j) == (i_offset <= j_offset) );
+            BOOST_TEST( (i >= j) == (i_offset >= j_offset) );
+        }
+    }
+    cout << std::endl;
+}
+
+// Test indexing
+template <typename T, typename R, typename P>
+void
+test_opr<T, R, P>::indexing_test
+(
+)
+{
+    std::cout << "\tDoing indexing test." << std::endl;
+
+    std::stringstream oss;
+    for ( std::size_t k = 0u ; k < fruit_length ; ++k )
+    {
+        oss << fruit_begin[ k ] << ' ';
+    }
+
+    BOOST_TEST( oss.str() == "apple orange pear peach grape plum ");
+}

test/operators_constexpr_test.cpp

@@ -0,0 +1,59 @@
+/*
+Copyright 2020 Glen Joseph Fernandes
+(glenjofe@gmail.com)
+
+Distributed under the Boost Software License, Version 1.0.
+(http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#include <boost/config.hpp>
+#if !defined(BOOST_NO_CXX11_CONSTEXPR) && \
+    (!defined(BOOST_MSVC) || (BOOST_MSVC >= 1922))
+#include <boost/operators.hpp>
+#include <boost/static_assert.hpp>
+
+namespace {
+
+class Value
+    : boost::operators<Value> {
+public:
+    BOOST_OPERATORS_CONSTEXPR explicit Value(int v)
+        : v_(v) { }
+
+    BOOST_OPERATORS_CONSTEXPR bool
+    operator<(const Value& x) const {
+        return v_ < x.v_;
+    }
+
+    BOOST_OPERATORS_CONSTEXPR bool
+    operator==(const Value& x) const {
+        return v_ == x.v_;
+    }
+
+private:
+    int v_;
+};
+
+} // namespace
+
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) == Value(2)));
+BOOST_STATIC_ASSERT(Value(1) != Value(2));
+BOOST_STATIC_ASSERT(Value(1) < Value(2));
+BOOST_STATIC_ASSERT(Value(1) <= Value(2));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) > Value(2)));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) >= Value(2)));
+
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) == Value(1)));
+BOOST_STATIC_ASSERT(Value(2) != Value(1));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) < Value(1)));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(2) <= Value(1)));
+BOOST_STATIC_ASSERT(Value(2) >  Value(1));
+BOOST_STATIC_ASSERT(Value(2) >= Value(1));
+
+BOOST_STATIC_ASSERT(Value(1) == Value(1));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) != Value(1)));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) < Value(1)));
+BOOST_STATIC_ASSERT(Value(1) <= Value(1));
+BOOST_STATIC_ASSERT(!static_cast<bool>(Value(1) > Value(1)));
+BOOST_STATIC_ASSERT(Value(1) >= Value(1));
+#endif

test/operators_test.cpp

@@ -0,0 +1,938 @@
+//  Demonstrate and test boost/operators.hpp  -------------------------------//
+
+//  Copyright Beman Dawes 1999.  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/utility for documentation.
+
+//  Revision History
+//  03 Apr 08 Added convertible_to_bool (Daniel Frey)
+//  01 Oct 01 Added tests for "left" operators
+//            and new grouped operators. (Helmut Zeisel)
+//  20 May 01 Output progress messages.  Added tests for new operator
+//            templates.  Updated random number generator.  Changed tests to
+//            use Boost Test Tools library.  (Daryle Walker)
+//  04 Jun 00 Added regression test for a bug I found (David Abrahams)
+//  17 Jun 00 Fix for broken compilers (Aleksey Gurtovoy)
+//  ?? ??? 00 Major update to randomly test all one- and two- argument forms by
+//            wrapping integral types and comparing the results of operations
+//            to the results for the raw types (David Abrahams)
+//  12 Dec 99 Minor update, output confirmation message.
+//  15 Nov 99 Initial version
+
+#include <boost/config.hpp>                      // for BOOST_MSVC
+#include <boost/operators.hpp>                   // for the tested items
+#include <boost/utility/detail/minstd_rand.hpp>  // for boost::detail::minstd_rand
+#include <boost/core/lightweight_test.hpp>
+
+#include <iostream>  // for std::cout (std::endl indirectly)
+
+namespace
+{
+    // avoiding a template version of true_value so as to not confuse VC++
+    int true_value(int x) { return x; }
+    long true_value(long x) { return x; }
+    signed char true_value(signed char x) { return x; }
+    unsigned int true_value(unsigned int x) { return x; }
+    unsigned long true_value(unsigned long x) { return x; }
+    unsigned char true_value(unsigned char x) { return x; }
+
+    // verify the minimum requirements for some operators
+    class convertible_to_bool
+    {
+    private:
+        bool _value;
+
+        typedef bool convertible_to_bool::*unspecified_bool_type;
+
+        void operator!() const;
+
+    public:
+         convertible_to_bool( const bool value ) : _value( value ) {}
+
+         operator unspecified_bool_type() const
+          { return _value ? &convertible_to_bool::_value : 0; }
+    };
+
+    // The use of operators<> here tended to obscure
+    // interactions with certain compiler bugs
+    template <class T>
+    class Wrapped1
+        : boost::operators<Wrapped1<T> >
+        , boost::shiftable<Wrapped1<T> >
+    {
+    public:
+         explicit Wrapped1( T v = T() ) : _value(v) {}
+         T value() const { return _value; }
+
+         convertible_to_bool operator<(const Wrapped1& x) const
+          { return _value < x._value; }
+         convertible_to_bool operator==(const Wrapped1& x) const
+          { return _value == x._value; }
+
+        Wrapped1& operator+=(const Wrapped1& x)
+          { _value += x._value; return *this; }
+        Wrapped1& operator-=(const Wrapped1& x)
+          { _value -= x._value; return *this; }
+        Wrapped1& operator*=(const Wrapped1& x)
+          { _value *= x._value; return *this; }
+        Wrapped1& operator/=(const Wrapped1& x)
+          { _value /= x._value; return *this; }
+        Wrapped1& operator%=(const Wrapped1& x)
+          { _value %= x._value; return *this; }
+        Wrapped1& operator|=(const Wrapped1& x)
+          { _value |= x._value; return *this; }
+        Wrapped1& operator&=(const Wrapped1& x)
+          { _value &= x._value; return *this; }
+        Wrapped1& operator^=(const Wrapped1& x)
+          { _value ^= x._value; return *this; }
+        Wrapped1& operator<<=(const Wrapped1& x)
+          { _value <<= x._value; return *this; }
+        Wrapped1& operator>>=(const Wrapped1& x)
+          { _value >>= x._value; return *this; }
+        Wrapped1& operator++() { ++_value; return *this; }
+        Wrapped1& operator--() { --_value; return *this; }
+
+    private:
+        T _value;
+    };
+    template <class T>
+    T true_value(Wrapped1<T> x) { return x.value(); }
+
+    template <class T, class U>
+    class Wrapped2
+        : boost::operators<Wrapped2<T, U> >
+        , boost::operators2<Wrapped2<T, U>, U>
+        , boost::shiftable1<Wrapped2<T, U>
+        , boost::shiftable2<Wrapped2<T, U>, U > >
+    {
+    public:
+        explicit Wrapped2( T v = T() ) : _value(v) {}
+        T value() const { return _value; }
+
+        convertible_to_bool operator<(const Wrapped2& x) const
+          { return _value < x._value; }
+        convertible_to_bool operator==(const Wrapped2& x) const
+          { return _value == x._value; }
+
+        Wrapped2& operator+=(const Wrapped2& x)
+          { _value += x._value; return *this; }
+        Wrapped2& operator-=(const Wrapped2& x)
+          { _value -= x._value; return *this; }
+        Wrapped2& operator*=(const Wrapped2& x)
+          { _value *= x._value; return *this; }
+        Wrapped2& operator/=(const Wrapped2& x)
+          { _value /= x._value; return *this; }
+        Wrapped2& operator%=(const Wrapped2& x)
+          { _value %= x._value; return *this; }
+        Wrapped2& operator|=(const Wrapped2& x)
+          { _value |= x._value; return *this; }
+        Wrapped2& operator&=(const Wrapped2& x)
+          { _value &= x._value; return *this; }
+        Wrapped2& operator^=(const Wrapped2& x)
+          { _value ^= x._value; return *this; }
+        Wrapped2& operator<<=(const Wrapped2& x)
+          { _value <<= x._value; return *this; }
+        Wrapped2& operator>>=(const Wrapped2& x)
+          { _value >>= x._value; return *this; }
+        Wrapped2& operator++()                { ++_value; return *this; }
+        Wrapped2& operator--()                { --_value; return *this; }
+
+        convertible_to_bool operator<(U u) const
+          { return _value < u; }
+        convertible_to_bool operator>(U u) const
+          { return _value > u; }
+        convertible_to_bool operator==(U u) const
+          { return _value == u; }
+
+        Wrapped2& operator+=(U u) { _value += u; return *this; }
+        Wrapped2& operator-=(U u) { _value -= u; return *this; }
+        Wrapped2& operator*=(U u) { _value *= u; return *this; }
+        Wrapped2& operator/=(U u) { _value /= u; return *this; }
+        Wrapped2& operator%=(U u) { _value %= u; return *this; }
+        Wrapped2& operator|=(U u) { _value |= u; return *this; }
+        Wrapped2& operator&=(U u) { _value &= u; return *this; }
+        Wrapped2& operator^=(U u) { _value ^= u; return *this; }
+        Wrapped2& operator<<=(U u) { _value <<= u; return *this; }
+        Wrapped2& operator>>=(U u) { _value >>= u; return *this; }
+
+    private:
+        T _value;
+    };
+    template <class T, class U>
+    T true_value(Wrapped2<T,U> x) { return x.value(); }
+
+    template <class T>
+    class Wrapped3
+        : boost::equivalent<Wrapped3<T> >
+        , boost::partially_ordered<Wrapped3<T> >
+        , boost::equality_comparable<Wrapped3<T> >
+    {
+    public:
+        explicit Wrapped3( T v = T() ) : _value(v) {}
+        T value() const { return _value; }
+
+        convertible_to_bool operator<(const Wrapped3& x) const
+          { return _value < x._value; }
+
+    private:
+        T _value;
+    };
+    template <class T>
+    T true_value(Wrapped3<T> x) { return x.value(); }
+
+    template <class T, class U>
+    class Wrapped4
+        : boost::equality_comparable1<Wrapped4<T, U>
+        , boost::equivalent1<Wrapped4<T, U>
+        , boost::partially_ordered1<Wrapped4<T, U> > > >
+        , boost::partially_ordered2<Wrapped4<T, U>, U
+        , boost::equivalent2<Wrapped4<T, U>, U
+        , boost::equality_comparable2<Wrapped4<T, U>, U> > >
+    {
+    public:
+        explicit Wrapped4( T v = T() ) : _value(v) {}
+        T value() const { return _value; }
+
+        convertible_to_bool operator<(const Wrapped4& x) const
+          { return _value < x._value; }
+
+        convertible_to_bool operator<(U u) const
+          { return _value < u; }
+        convertible_to_bool operator>(U u) const
+          { return _value > u; }
+
+    private:
+        T _value;
+    };
+    template <class T, class U>
+    T true_value(Wrapped4<T,U> x) { return x.value(); }
+
+    // U must be convertible to T
+    template <class T, class U>
+    class Wrapped5
+        : boost::ordered_field_operators2<Wrapped5<T, U>, U>
+        , boost::ordered_field_operators1<Wrapped5<T, U> >
+    {
+    public:
+        explicit Wrapped5( T v = T() ) : _value(v) {}
+
+        // Conversion from U to Wrapped5<T,U>
+        Wrapped5(U u) : _value(u) {}
+
+        T value() const { return _value; }
+
+        convertible_to_bool operator<(const Wrapped5& x) const
+          { return _value < x._value; }
+        convertible_to_bool operator<(U u) const
+          { return _value < u; }
+        convertible_to_bool operator>(U u) const
+          { return _value > u; }
+        convertible_to_bool operator==(const Wrapped5& u) const
+          { return _value == u._value; }
+        convertible_to_bool operator==(U u) const
+          { return _value == u; }
+
+        Wrapped5& operator/=(const Wrapped5& u) { _value /= u._value; return *this;}
+        Wrapped5& operator/=(U u) { _value /= u; return *this;}
+        Wrapped5& operator*=(const Wrapped5& u) { _value *= u._value; return *this;}
+        Wrapped5& operator*=(U u) { _value *= u; return *this;}
+        Wrapped5& operator-=(const Wrapped5& u) { _value -= u._value; return *this;}
+        Wrapped5& operator-=(U u) { _value -= u; return *this;}
+        Wrapped5& operator+=(const Wrapped5& u) { _value += u._value; return *this;}
+        Wrapped5& operator+=(U u) { _value += u; return *this;}
+
+    private:
+        T _value;
+    };
+    template <class T, class U>
+    T true_value(Wrapped5<T,U> x) { return x.value(); }
+
+    // U must be convertible to T
+    template <class T, class U>
+    class Wrapped6
+        : boost::ordered_euclidean_ring_operators2<Wrapped6<T, U>, U>
+        , boost::ordered_euclidean_ring_operators1<Wrapped6<T, U> >
+    {
+    public:
+        explicit Wrapped6( T v = T() ) : _value(v) {}
+
+        // Conversion from U to Wrapped6<T,U>
+        Wrapped6(U u) : _value(u) {}
+
+        T value() const { return _value; }
+
+        convertible_to_bool operator<(const Wrapped6& x) const
+          { return _value < x._value; }
+        convertible_to_bool operator<(U u) const
+          { return _value < u; }
+        convertible_to_bool operator>(U u) const
+          { return _value > u; }
+        convertible_to_bool operator==(const Wrapped6& u) const
+          { return _value == u._value; }
+        convertible_to_bool operator==(U u) const
+          { return _value == u; }
+
+        Wrapped6& operator%=(const Wrapped6& u) { _value %= u._value; return *this;}
+        Wrapped6& operator%=(U u) { _value %= u; return *this;}
+        Wrapped6& operator/=(const Wrapped6& u) { _value /= u._value; return *this;}
+        Wrapped6& operator/=(U u) { _value /= u; return *this;}
+        Wrapped6& operator*=(const Wrapped6& u) { _value *= u._value; return *this;}
+        Wrapped6& operator*=(U u) { _value *= u; return *this;}
+        Wrapped6& operator-=(const Wrapped6& u) { _value -= u._value; return *this;}
+        Wrapped6& operator-=(U u) { _value -= u; return *this;}
+        Wrapped6& operator+=(const Wrapped6& u) { _value += u._value; return *this;}
+        Wrapped6& operator+=(U u) { _value += u; return *this;}
+
+    private:
+        T _value;
+    };
+    template <class T, class U>
+    T true_value(Wrapped6<T,U> x) { return x.value(); }
+
+    //  MyInt uses only the single template-argument form of all_operators<>
+    typedef Wrapped1<int> MyInt;
+
+    typedef Wrapped2<long, long> MyLong;
+
+    typedef Wrapped3<signed char> MyChar;
+
+    typedef Wrapped4<short, short> MyShort;
+
+    typedef Wrapped5<double, int> MyDoubleInt;
+
+    typedef Wrapped6<long, int> MyLongInt;
+
+    template <class X1, class Y1, class X2, class Y2>
+    void sanity_check(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        BOOST_TEST( true_value(y1) == true_value(y2) );
+        BOOST_TEST( true_value(x1) == true_value(x2) );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_less_than_comparable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        BOOST_TEST( static_cast<bool>(x1 < y1) == static_cast<bool>(x2 < y2) );
+        BOOST_TEST( static_cast<bool>(x1 <= y1) == static_cast<bool>(x2 <= y2) );
+        BOOST_TEST( static_cast<bool>(x1 >= y1) == static_cast<bool>(x2 >= y2) );
+        BOOST_TEST( static_cast<bool>(x1 > y1) == static_cast<bool>(x2 > y2) );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_less_than_comparable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_less_than_comparable_aux( x1, y1, x2, y2 );
+        test_less_than_comparable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_equality_comparable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        BOOST_TEST( static_cast<bool>(x1 == y1) == static_cast<bool>(x2 == y2) );
+        BOOST_TEST( static_cast<bool>(x1 != y1) == static_cast<bool>(x2 != y2) );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_equality_comparable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_equality_comparable_aux( x1, y1, x2, y2 );
+        test_equality_comparable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_multipliable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        BOOST_TEST( (x1 * y1).value() == (x2 * y2) );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_multipliable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_multipliable_aux( x1, y1, x2, y2 );
+        test_multipliable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class A, class B>
+    void test_value_equality(A a, B b)
+    {
+        BOOST_TEST(a.value() == b);
+    }
+
+#define TEST_OP_R(op) test_value_equality(x1 op y1, x2 op y2)
+#define TEST_OP_L(op) test_value_equality(y1 op x1, y2 op x2)
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_addable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        TEST_OP_R(+);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_addable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_addable_aux( x1, y1, x2, y2 );
+        test_addable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_subtractable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        TEST_OP_R(-);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_subtractable_left(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        TEST_OP_L(-);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_dividable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        if ( y2 != 0 )
+            TEST_OP_R(/);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_dividable_left(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        if ( x2 != 0 )
+            TEST_OP_L(/);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_modable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        if ( y2 != 0 )
+            TEST_OP_R(%);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_modable_left(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        if ( x2 != 0 )
+            TEST_OP_L(%);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_xorable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        TEST_OP_R(^);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_xorable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_xorable_aux( x1, y1, x2, y2 );
+        test_xorable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_andable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        TEST_OP_R(&);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_andable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_andable_aux( x1, y1, x2, y2 );
+        test_andable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_orable_aux(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        TEST_OP_R(|);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_orable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        test_orable_aux( x1, y1, x2, y2 );
+        test_orable_aux( y1, x1, y2, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_left_shiftable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        TEST_OP_R(<<);
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_right_shiftable(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        sanity_check( x1, y1, x2, y2 );
+        TEST_OP_R(>>);
+    }
+
+    template <class X1, class X2>
+    void test_incrementable(X1 x1, X2 x2)
+    {
+        sanity_check( x1, x1, x2, x2 );
+        BOOST_TEST( (x1++).value() == x2++ );
+        BOOST_TEST( x1.value() == x2 );
+    }
+
+    template <class X1, class X2>
+    void test_decrementable(X1 x1, X2 x2)
+    {
+        sanity_check( x1, x1, x2, x2 );
+        BOOST_TEST( (x1--).value() == x2-- );
+        BOOST_TEST( x1.value() == x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_all(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        test_less_than_comparable( x1, y1, x2, y2 );
+        test_equality_comparable( x1, y1, x2, y2 );
+        test_multipliable( x1, y1, x2, y2 );
+        test_addable( x1, y1, x2, y2 );
+        test_subtractable( x1, y1, x2, y2 );
+        test_dividable( x1, y1, x2, y2 );
+        test_modable( x1, y1, x2, y2 );
+        test_xorable( x1, y1, x2, y2 );
+        test_andable( x1, y1, x2, y2 );
+        test_orable( x1, y1, x2, y2 );
+        test_left_shiftable( x1, y1, x2, y2 );
+        test_right_shiftable( x1, y1, x2, y2 );
+        test_incrementable( x1, x2 );
+        test_decrementable( x1, x2 );
+    }
+
+    template <class X1, class Y1, class X2, class Y2>
+    void test_left(X1 x1, Y1 y1, X2 x2, Y2 y2)
+    {
+        test_subtractable_left( x1, y1, x2, y2 );
+        test_dividable_left( x1, y1, x2, y2 );
+        test_modable_left( x1, y1, x2, y2 );
+     }
+
+    template <class Big, class Small>
+    struct tester
+    {
+        void operator()(boost::detail::minstd_rand& randomizer) const
+        {
+            Big    b1 = Big( randomizer() );
+            Big    b2 = Big( randomizer() );
+            Small  s = Small( randomizer() );
+
+            test_all( Wrapped1<Big>(b1), Wrapped1<Big>(b2), b1, b2 );
+            test_all( Wrapped2<Big, Small>(b1), s, b1, s );
+        }
+    };
+
+    template <class Big, class Small>
+    struct tester_left
+    {
+        void operator()(boost::detail::minstd_rand& randomizer) const
+        {
+            Big    b1 = Big( randomizer() );
+            Small  s = Small( randomizer() );
+
+            test_left( Wrapped6<Big, Small>(b1), s, b1, s );
+         }
+    };
+
+    // added as a regression test. We had a bug which this uncovered.
+    struct Point
+        : boost::addable<Point
+        , boost::subtractable<Point> >
+    {
+        Point( int h, int v ) : h(h), v(v) {}
+        Point() :h(0), v(0) {}
+        const Point& operator+=( const Point& rhs )
+            { h += rhs.h; v += rhs.v; return *this; }
+        const Point& operator-=( const Point& rhs )
+            { h -= rhs.h; v -= rhs.v; return *this; }
+
+        int h;
+        int v;
+    };
+
+} // unnamed namespace
+
+
+// workaround for MSVC bug; for some reasons the compiler doesn't instantiate
+// inherited operator templates at the moment it must, so the following
+// explicit instantiations force it to do that.
+
+#if defined(BOOST_MSVC) && (_MSC_VER < 1300)
+template Wrapped1<int>;
+template Wrapped1<long>;
+template Wrapped1<unsigned int>;
+template Wrapped1<unsigned long>;
+
+template Wrapped2<int, int>;
+template Wrapped2<int, signed char>;
+template Wrapped2<long, signed char>;
+template Wrapped2<long, int>;
+template Wrapped2<long, long>;
+template Wrapped2<unsigned int, unsigned int>;
+template Wrapped2<unsigned int, unsigned char>;
+template Wrapped2<unsigned long, unsigned int>;
+template Wrapped2<unsigned long, unsigned char>;
+template Wrapped2<unsigned long, unsigned long>;
+
+template Wrapped6<long, int>;
+template Wrapped6<long, signed char>;
+template Wrapped6<int, signed char>;
+template Wrapped6<unsigned long, unsigned int>;
+template Wrapped6<unsigned long, unsigned char>;
+template Wrapped6<unsigned int, unsigned char>;
+#endif
+
+#define PRIVATE_EXPR_TEST(e, t)  BOOST_TEST( ((e), (t)) )
+
+int
+main()
+{
+    using std::cout;
+    using std::endl;
+
+    // Regression test.
+    Point x;
+    x = x + Point(3, 4);
+    x = x - Point(3, 4);
+
+    cout << "Created point, and operated on it." << endl;
+
+#if !defined(UBSAN)
+    // Using random values produce UB in various tests, such as shifting by more than the left operand capacity or signed integer overflows
+    for (int n = 0; n < 1000; ++n)  // was 10,000 but took too long (Beman)
+    {
+        boost::detail::minstd_rand r;
+        tester<long, int>()(r);
+        tester<long, signed char>()(r);
+        tester<long, long>()(r);
+        tester<int, int>()(r);
+        tester<int, signed char>()(r);
+
+        tester<unsigned long, unsigned int>()(r);
+        tester<unsigned long, unsigned char>()(r);
+        tester<unsigned long, unsigned long>()(r);
+        tester<unsigned int, unsigned int>()(r);
+        tester<unsigned int, unsigned char>()(r);
+
+        tester_left<long, int>()(r);
+        tester_left<long, signed char>()(r);
+        tester_left<int, signed char>()(r);
+
+        tester_left<unsigned long, unsigned int>()(r);
+        tester_left<unsigned long, unsigned char>()(r);
+        tester_left<unsigned int, unsigned char>()(r);
+    }
+
+    cout << "Did random tester loop." << endl;
+#endif // !defined(UBSAN)
+
+    MyInt i1(1);
+    MyInt i2(2);
+    MyInt i;
+
+    BOOST_TEST( i1.value() == 1 );
+    BOOST_TEST( i2.value() == 2 );
+    BOOST_TEST( i.value() == 0 );
+
+    cout << "Created MyInt objects.\n";
+
+    PRIVATE_EXPR_TEST( (i = i2), (i.value() == 2) );
+
+    BOOST_TEST( static_cast<bool>(i2 == i) );
+    BOOST_TEST( static_cast<bool>(i1 != i2) );
+    BOOST_TEST( static_cast<bool>(i1 <  i2) );
+    BOOST_TEST( static_cast<bool>(i1 <= i2) );
+    BOOST_TEST( static_cast<bool>(i <= i2) );
+    BOOST_TEST( static_cast<bool>(i2 >  i1) );
+    BOOST_TEST( static_cast<bool>(i2 >= i1) );
+    BOOST_TEST( static_cast<bool>(i2 >= i) );
+
+    PRIVATE_EXPR_TEST( (i = i1 + i2), (i.value() == 3) );
+    PRIVATE_EXPR_TEST( (i = i + i2), (i.value() == 5) );
+    PRIVATE_EXPR_TEST( (i = i - i1), (i.value() == 4) );
+    PRIVATE_EXPR_TEST( (i = i * i2), (i.value() == 8) );
+    PRIVATE_EXPR_TEST( (i = i / i2), (i.value() == 4) );
+    PRIVATE_EXPR_TEST( (i = i % ( i - i1 )), (i.value() == 1) );
+    PRIVATE_EXPR_TEST( (i = i2 + i2), (i.value() == 4) );
+    PRIVATE_EXPR_TEST( (i = i1 | i2 | i), (i.value() == 7) );
+    PRIVATE_EXPR_TEST( (i = i & i2), (i.value() == 2) );
+    PRIVATE_EXPR_TEST( (i = i + i1), (i.value() == 3) );
+    PRIVATE_EXPR_TEST( (i = i ^ i1), (i.value() == 2) );
+    PRIVATE_EXPR_TEST( (i = ( i + i1 ) * ( i2 | i1 )), (i.value() == 9) );
+
+    PRIVATE_EXPR_TEST( (i = i1 << i2), (i.value() == 4) );
+    PRIVATE_EXPR_TEST( (i = i2 >> i1), (i.value() == 1) );
+
+    cout << "Performed tests on MyInt objects.\n";
+
+    MyLong j1(1);
+    MyLong j2(2);
+    MyLong j;
+
+    BOOST_TEST( j1.value() == 1 );
+    BOOST_TEST( j2.value() == 2 );
+    BOOST_TEST( j.value() == 0 );
+
+    cout << "Created MyLong objects.\n";
+
+    PRIVATE_EXPR_TEST( (j = j2), (j.value() == 2) );
+
+    BOOST_TEST( static_cast<bool>(j2 == j) );
+    BOOST_TEST( static_cast<bool>(2 == j) );
+    BOOST_TEST( static_cast<bool>(j2 == 2) );
+    BOOST_TEST( static_cast<bool>(j == j2) );
+    BOOST_TEST( static_cast<bool>(j1 != j2) );
+    BOOST_TEST( static_cast<bool>(j1 != 2) );
+    BOOST_TEST( static_cast<bool>(1 != j2) );
+    BOOST_TEST( static_cast<bool>(j1 <  j2) );
+    BOOST_TEST( static_cast<bool>(1 <  j2) );
+    BOOST_TEST( static_cast<bool>(j1 <  2) );
+    BOOST_TEST( static_cast<bool>(j1 <= j2) );
+    BOOST_TEST( static_cast<bool>(1 <= j2) );
+    BOOST_TEST( static_cast<bool>(j1 <= j) );
+    BOOST_TEST( static_cast<bool>(j <= j2) );
+    BOOST_TEST( static_cast<bool>(2 <= j2) );
+    BOOST_TEST( static_cast<bool>(j <= 2) );
+    BOOST_TEST( static_cast<bool>(j2 >  j1) );
+    BOOST_TEST( static_cast<bool>(2 >  j1) );
+    BOOST_TEST( static_cast<bool>(j2 >  1) );
+    BOOST_TEST( static_cast<bool>(j2 >= j1) );
+    BOOST_TEST( static_cast<bool>(2 >= j1) );
+    BOOST_TEST( static_cast<bool>(j2 >= 1) );
+    BOOST_TEST( static_cast<bool>(j2 >= j) );
+    BOOST_TEST( static_cast<bool>(2 >= j) );
+    BOOST_TEST( static_cast<bool>(j2 >= 2) );
+
+    BOOST_TEST( static_cast<bool>((j1 + 2) == 3) );
+    BOOST_TEST( static_cast<bool>((1 + j2) == 3) );
+    PRIVATE_EXPR_TEST( (j = j1 + j2), (j.value() == 3) );
+
+    BOOST_TEST( static_cast<bool>((j + 2) == 5) );
+    BOOST_TEST( static_cast<bool>((3 + j2) == 5) );
+    PRIVATE_EXPR_TEST( (j = j + j2), (j.value() == 5) );
+
+    BOOST_TEST( static_cast<bool>((j - 1) == 4) );
+    PRIVATE_EXPR_TEST( (j = j - j1), (j.value() == 4) );
+
+    BOOST_TEST( static_cast<bool>((j * 2) == 8) );
+    BOOST_TEST( static_cast<bool>((4 * j2) == 8) );
+    PRIVATE_EXPR_TEST( (j = j * j2), (j.value() == 8) );
+
+    BOOST_TEST( static_cast<bool>((j / 2) == 4) );
+    PRIVATE_EXPR_TEST( (j = j / j2), (j.value() == 4) );
+
+    BOOST_TEST( static_cast<bool>((j % 3) == 1) );
+    PRIVATE_EXPR_TEST( (j = j % ( j - j1 )), (j.value() == 1) );
+
+    PRIVATE_EXPR_TEST( (j = j2 + j2), (j.value() == 4) );
+
+    BOOST_TEST( static_cast<bool>((1 | j2 | j) == 7) );
+    BOOST_TEST( static_cast<bool>((j1 | 2 | j) == 7) );
+    BOOST_TEST( static_cast<bool>((j1 | j2 | 4) == 7) );
+    PRIVATE_EXPR_TEST( (j = j1 | j2 | j), (j.value() == 7) );
+
+    BOOST_TEST( static_cast<bool>((7 & j2) == 2) );
+    BOOST_TEST( static_cast<bool>((j & 2) == 2) );
+    PRIVATE_EXPR_TEST( (j = j & j2), (j.value() == 2) );
+
+    PRIVATE_EXPR_TEST( (j = j | j1), (j.value() == 3) );
+
+    BOOST_TEST( static_cast<bool>((3 ^ j1) == 2) );
+    BOOST_TEST( static_cast<bool>((j ^ 1) == 2) );
+    PRIVATE_EXPR_TEST( (j = j ^ j1), (j.value() == 2) );
+
+    PRIVATE_EXPR_TEST( (j = ( j + j1 ) * ( j2 | j1 )), (j.value() == 9) );
+
+    BOOST_TEST( static_cast<bool>((j1 << 2) == 4) );
+    BOOST_TEST( static_cast<bool>((j2 << 1) == 4) );
+    PRIVATE_EXPR_TEST( (j = j1 << j2), (j.value() == 4) );
+
+    BOOST_TEST( static_cast<bool>((j >> 2) == 1) );
+    BOOST_TEST( static_cast<bool>((j2 >> 1) == 1) );
+    PRIVATE_EXPR_TEST( (j = j2 >> j1), (j.value() == 1) );
+
+    cout << "Performed tests on MyLong objects.\n";
+
+    MyChar k1(1);
+    MyChar k2(2);
+    MyChar k;
+
+    BOOST_TEST( k1.value() == 1 );
+    BOOST_TEST( k2.value() == 2 );
+    BOOST_TEST( k.value() == 0 );
+
+    cout << "Created MyChar objects.\n";
+
+    PRIVATE_EXPR_TEST( (k = k2), (k.value() == 2) );
+
+    BOOST_TEST( static_cast<bool>(k2 == k) );
+    BOOST_TEST( static_cast<bool>(k1 != k2) );
+    BOOST_TEST( static_cast<bool>(k1 <  k2) );
+    BOOST_TEST( static_cast<bool>(k1 <= k2) );
+    BOOST_TEST( static_cast<bool>(k <= k2) );
+    BOOST_TEST( static_cast<bool>(k2 >  k1) );
+    BOOST_TEST( static_cast<bool>(k2 >= k1) );
+    BOOST_TEST( static_cast<bool>(k2 >= k) );
+
+    cout << "Performed tests on MyChar objects.\n";
+
+    MyShort l1(1);
+    MyShort l2(2);
+    MyShort l;
+
+    BOOST_TEST( l1.value() == 1 );
+    BOOST_TEST( l2.value() == 2 );
+    BOOST_TEST( l.value() == 0 );
+
+    cout << "Created MyShort objects.\n";
+
+    PRIVATE_EXPR_TEST( (l = l2), (l.value() == 2) );
+
+    BOOST_TEST( static_cast<bool>(l2 == l) );
+    BOOST_TEST( static_cast<bool>(2 == l) );
+    BOOST_TEST( static_cast<bool>(l2 == 2) );
+    BOOST_TEST( static_cast<bool>(l == l2) );
+    BOOST_TEST( static_cast<bool>(l1 != l2) );
+    BOOST_TEST( static_cast<bool>(l1 != 2) );
+    BOOST_TEST( static_cast<bool>(1 != l2) );
+    BOOST_TEST( static_cast<bool>(l1 <  l2) );
+    BOOST_TEST( static_cast<bool>(1 <  l2) );
+    BOOST_TEST( static_cast<bool>(l1 <  2) );
+    BOOST_TEST( static_cast<bool>(l1 <= l2) );
+    BOOST_TEST( static_cast<bool>(1 <= l2) );
+    BOOST_TEST( static_cast<bool>(l1 <= l) );
+    BOOST_TEST( static_cast<bool>(l <= l2) );
+    BOOST_TEST( static_cast<bool>(2 <= l2) );
+    BOOST_TEST( static_cast<bool>(l <= 2) );
+    BOOST_TEST( static_cast<bool>(l2 >  l1) );
+    BOOST_TEST( static_cast<bool>(2 >  l1) );
+    BOOST_TEST( static_cast<bool>(l2 >  1) );
+    BOOST_TEST( static_cast<bool>(l2 >= l1) );
+    BOOST_TEST( static_cast<bool>(2 >= l1) );
+    BOOST_TEST( static_cast<bool>(l2 >= 1) );
+    BOOST_TEST( static_cast<bool>(l2 >= l) );
+    BOOST_TEST( static_cast<bool>(2 >= l) );
+    BOOST_TEST( static_cast<bool>(l2 >= 2) );
+
+    cout << "Performed tests on MyShort objects.\n";
+
+    MyDoubleInt di1(1);
+    MyDoubleInt di2(2.);
+    MyDoubleInt half(0.5);
+    MyDoubleInt di;
+    MyDoubleInt tmp;
+
+    BOOST_TEST( di1.value() == 1 );
+    BOOST_TEST( di2.value() == 2 );
+    BOOST_TEST( di2.value() == 2 );
+    BOOST_TEST( di.value() == 0 );
+
+    cout << "Created MyDoubleInt objects.\n";
+
+    PRIVATE_EXPR_TEST( (di = di2), (di.value() == 2) );
+
+    BOOST_TEST( static_cast<bool>(di2 == di) );
+    BOOST_TEST( static_cast<bool>(2 == di) );
+    BOOST_TEST( static_cast<bool>(di == 2) );
+    BOOST_TEST( static_cast<bool>(di1 < di2) );
+    BOOST_TEST( static_cast<bool>(1 < di2) );
+    BOOST_TEST( static_cast<bool>(di1 <= di2) );
+    BOOST_TEST( static_cast<bool>(1 <= di2) );
+    BOOST_TEST( static_cast<bool>(di2 > di1) );
+    BOOST_TEST( static_cast<bool>(di2 > 1) );
+    BOOST_TEST( static_cast<bool>(di2 >= di1) );
+    BOOST_TEST( static_cast<bool>(di2 >= 1) );
+    BOOST_TEST( static_cast<bool>(di1 / di2 == half) );
+    BOOST_TEST( static_cast<bool>(di1 / 2 == half) );
+    BOOST_TEST( static_cast<bool>(1 / di2 == half) );
+    PRIVATE_EXPR_TEST( (tmp=di1), static_cast<bool>((tmp/=2) == half) );
+    PRIVATE_EXPR_TEST( (tmp=di1), static_cast<bool>((tmp/=di2) == half) );
+    BOOST_TEST( static_cast<bool>(di1 * di2 == di2) );
+    BOOST_TEST( static_cast<bool>(di1 * 2 == di2) );
+    BOOST_TEST( static_cast<bool>(1 * di2 == di2) );
+    PRIVATE_EXPR_TEST( (tmp=di1), static_cast<bool>((tmp*=2) == di2) );
+    PRIVATE_EXPR_TEST( (tmp=di1), static_cast<bool>((tmp*=di2) == di2) );
+    BOOST_TEST( static_cast<bool>(di2 - di1 == di1) );
+    BOOST_TEST( static_cast<bool>(di2 - 1 == di1) );
+    BOOST_TEST( static_cast<bool>(2 - di1 == di1) );
+    PRIVATE_EXPR_TEST( (tmp=di2), static_cast<bool>((tmp-=1) == di1) );
+    PRIVATE_EXPR_TEST( (tmp=di2), static_cast<bool>((tmp-=di1) == di1) );
+    BOOST_TEST( static_cast<bool>(di1 + di1 == di2) );
+    BOOST_TEST( static_cast<bool>(di1 + 1 == di2) );
+    BOOST_TEST( static_cast<bool>(1 + di1 == di2) );
+    PRIVATE_EXPR_TEST( (tmp=di1), static_cast<bool>((tmp+=1) == di2) );
+    PRIVATE_EXPR_TEST( (tmp=di1), static_cast<bool>((tmp+=di1) == di2) );
+
+    cout << "Performed tests on MyDoubleInt objects.\n";
+
+    MyLongInt li1(1);
+    MyLongInt li2(2);
+    MyLongInt li;
+    MyLongInt tmp2;
+
+    BOOST_TEST( li1.value() == 1 );
+    BOOST_TEST( li2.value() == 2 );
+    BOOST_TEST( li.value() == 0 );
+
+    cout << "Created MyLongInt objects.\n";
+
+    PRIVATE_EXPR_TEST( (li = li2), (li.value() == 2) );
+
+    BOOST_TEST( static_cast<bool>(li2 == li) );
+    BOOST_TEST( static_cast<bool>(2 == li) );
+    BOOST_TEST( static_cast<bool>(li == 2) );
+    BOOST_TEST( static_cast<bool>(li1 < li2) );
+    BOOST_TEST( static_cast<bool>(1 < li2) );
+    BOOST_TEST( static_cast<bool>(li1 <= li2) );
+    BOOST_TEST( static_cast<bool>(1 <= li2) );
+    BOOST_TEST( static_cast<bool>(li2 > li1) );
+    BOOST_TEST( static_cast<bool>(li2 > 1) );
+    BOOST_TEST( static_cast<bool>(li2 >= li1) );
+    BOOST_TEST( static_cast<bool>(li2 >= 1) );
+    BOOST_TEST( static_cast<bool>(li1 % li2 == li1) );
+    BOOST_TEST( static_cast<bool>(li1 % 2 == li1) );
+    BOOST_TEST( static_cast<bool>(1 % li2 == li1) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2%=2) == li1) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2%=li2) == li1) );
+    BOOST_TEST( static_cast<bool>(li1 / li2 == 0) );
+    BOOST_TEST( static_cast<bool>(li1 / 2 == 0) );
+    BOOST_TEST( static_cast<bool>(1 / li2 == 0) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2/=2) == 0) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2/=li2) == 0) );
+    BOOST_TEST( static_cast<bool>(li1 * li2 == li2) );
+    BOOST_TEST( static_cast<bool>(li1 * 2 == li2) );
+    BOOST_TEST( static_cast<bool>(1 * li2 == li2) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2*=2) == li2) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2*=li2) == li2) );
+    BOOST_TEST( static_cast<bool>(li2 - li1 == li1) );
+    BOOST_TEST( static_cast<bool>(li2 - 1 == li1) );
+    BOOST_TEST( static_cast<bool>(2 - li1 == li1) );
+    PRIVATE_EXPR_TEST( (tmp2=li2), static_cast<bool>((tmp2-=1) == li1) );
+    PRIVATE_EXPR_TEST( (tmp2=li2), static_cast<bool>((tmp2-=li1) == li1) );
+    BOOST_TEST( static_cast<bool>(li1 + li1 == li2) );
+    BOOST_TEST( static_cast<bool>(li1 + 1 == li2) );
+    BOOST_TEST( static_cast<bool>(1 + li1 == li2) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2+=1) == li2) );
+    PRIVATE_EXPR_TEST( (tmp2=li1), static_cast<bool>((tmp2+=li1) == li2) );
+
+    cout << "Performed tests on MyLongInt objects.\n";
+
+    return boost::report_errors();
+}