This commit was manufactured by cvs2svn to create tag

'Version_1_34_0'. [SVN r37679]
2026-08-04 12:34:32 +02:00 · 2007-05-12 21:59:40 +00:00
26 changed files with 1474 additions and 1292 deletions
@@ -1,11 +0,0 @@
-# To get started with Dependabot version updates, you'll need to specify which
-# package ecosystems to update and where the package manifests are located.
-# Please see the documentation for all configuration options:
-# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
-
-version: 2
-updates:
-  - package-ecosystem: "github-actions" # See documentation for possible values
-    directory: "/" # Location of package manifests
-    schedule:
-        interval: "weekly"
@@ -1,182 +0,0 @@
-name: CI
-
-on:
-  pull_request:
-  push:
-    branches:
-      - master
-      - develop
-      - feature/**
-
-env:
-  UBSAN_OPTIONS: print_stacktrace=1
-
-jobs:
-  posix:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - toolset: gcc-14  # Do not remove! It is the only toolset that tests CMake tests down below
-            cxxstd: "03,11,14,17,20"
-            os: ubuntu-24.04
-          - toolset: gcc-12
-            cxxstd: "03,11,14,17,2a"
-            os: ubuntu-22.04
-            cxxflags: "cxxflags=--coverage -fsanitize=address,leak,undefined -fno-sanitize-recover=undefined"
-            linkflags: "linkflags=--coverage -lasan -lubsan"
-            gcov_tool: "gcov-12"
-          - toolset: clang
-            compiler: clang++-14
-            cxxstd: "03,11,14,17,2a"
-            os: ubuntu-22.04
-
-    runs-on: ${{matrix.os}}
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Install packages
-        if: matrix.install
-        run: sudo apt install ${{matrix.install}}
-
-      - 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
-          cd ..
-          git clone -b $BOOST_BRANCH --depth 10 https://github.com/boostorg/boost.git boost-root
-          cd boost-root
-          git submodule update --init --depth 10 --jobs 2 tools/boostdep tools/inspect libs/filesystem
-          python tools/boostdep/depinst/depinst.py --git_args "--depth 10 --jobs 3" filesystem
-          rm -rf libs/$LIBRARY/*
-          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
-          python tools/boostdep/depinst/depinst.py --include benchmark --include example --include examples --include tools --git_args "--depth 10 --jobs 3" $LIBRARY
-          ./bootstrap.sh
-          ./b2 -j4 variant=debug tools/inspect
-
-      - name: Run CMake tests
-        if: ${{matrix.toolset == 'gcc-14'}}
-        run: |
-          cd ../boost-root/
-          mkdir __build
-          cd __build
-          cmake -DBUILD_TESTING=1 -DBOOST_INCLUDE_LIBRARIES=conversion -DCMAKE_CXX_COMPILER=g++-14 -DCMAKE_C_COMPILER=gcc-14 ..
-          cmake --build . --target tests
-          ctest --output-on-failure --no-tests=error
-          cd ..
-          rm -rf __build
-
-      - name: Run tests
-        run: |
-          cd ../boost-root
-          ./b2 -j3 libs/$LIBRARY/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} variant=debug,release "${{matrix.cxxflags}}" "${{matrix.linkflags}}" "${{matrix.launcher}}"
-          dist/bin/inspect libs/$LIBRARY
-
-      - name: Prepare coverage data
-        if: matrix.gcov_tool
-        run: |
-          mkdir -p $GITHUB_WORKSPACE/coveralls
-
-          echo -e "#!/bin/bash\nexec ${{matrix.gcov_tool}} \"\$@\"" > $GITHUB_WORKSPACE/coveralls/gcov_wrapper.sh
-          chmod +x $GITHUB_WORKSPACE/coveralls/gcov_wrapper.sh
-          wget https://github.com/linux-test-project/lcov/archive/v1.16.zip
-          unzip v1.16.zip
-          LCOV="`pwd`/lcov-1.16/bin/lcov --gcov-tool $GITHUB_WORKSPACE/coveralls/gcov_wrapper.sh"
-
-          echo "$LCOV --directory ../boost-root/bin.v2/libs/$LIBRARY/ --base-directory `pwd`/libs/$LIBRARY/test --capture --output-file $GITHUB_WORKSPACE/coveralls/coverage.info"
-          $LCOV --directory ../boost-root/bin.v2/libs/$LIBRARY/ --base-directory ../boost-root/ --capture --output-file $GITHUB_WORKSPACE/coveralls/coverage.info
-          $LCOV --remove $GITHUB_WORKSPACE/coveralls/coverage.info "/usr*" "*/$LIBRARY/test/*" ${{matrix.ignore_coverage}} "*/$LIBRARY/tests/*" "*/$LIBRARY/examples/*" "*/$LIBRARY/example/*" -o $GITHUB_WORKSPACE/coveralls/coverage.info
-
-          cd ../boost-root
-          OTHER_LIBS=`grep "submodule .*" .gitmodules | sed 's/\[submodule\ "\(.*\)"\]/"\*\/boost\/\1\.hpp" "\*\/boost\/\1\/\*"/g'| sed "/\"\*\/boost\/$LIBRARY\/\*\"/d" | sed ':a;N;$!ba;s/\n/ /g'`
-          echo $OTHER_LIBS
-          eval "$LCOV --remove $GITHUB_WORKSPACE/coveralls/coverage.info $OTHER_LIBS -o $GITHUB_WORKSPACE/coveralls/coverage.info"
-
-      - name: Coveralls
-        uses: coverallsapp/github-action@master
-        if: matrix.gcov_tool
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          path-to-lcov: ./coveralls/coverage.info
-          parallel: true
-
-  windows:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - toolset: msvc-14.3
-            cxxstd: "14,17,latest"
-            addrmd: 32,64
-            os: windows-2025
-          - toolset: gcc
-            cxxstd: "03,11,14,17,2a"
-            addrmd: 64
-            os: windows-2025
-
-    runs-on: ${{matrix.os}}
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - 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%
-          cd ..
-          git clone -b %BOOST_BRANCH% --depth 10 https://github.com/boostorg/boost.git boost-root
-          cd boost-root
-          xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
-          git submodule update --init tools/boostdep
-          python tools/boostdep/depinst/depinst.py --include benchmark --include example --include examples --include tools --git_args "--jobs 3" %LIBRARY%
-          cmd /c bootstrap
-
-      - name: Run CMake tests
-        if: ${{matrix.toolset == 'msvc-14.3'}}
-        shell: cmd
-        run: |
-          choco install --no-progress ninja
-          call "C:/Program Files/Microsoft Visual Studio/2022/Enterprise/VC/Auxiliary/Build/vcvarsall.bat" x64
-          cd ../boost-root/
-          mkdir __build
-          cd __build
-          cmake -DBUILD_TESTING=1 -DBOOST_INCLUDE_LIBRARIES=conversion ..
-          cmake --build . --target tests --config Debug
-          ctest --output-on-failure --no-tests=error -C Debug
-          cd ..
-          rm -rf __build
-
-      - name: Run tests
-        shell: cmd
-        run: |
-          cd ../boost-root
-          b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release
-
-  finish:
-    needs: posix
-    runs-on: ubuntu-latest
-    steps:
-    - name: Coveralls Finished
-      uses: coverallsapp/github-action@master
-      with:
-        github-token: ${{ secrets.github_token }}
-        parallel-finished: true
@@ -1,22 +0,0 @@
-# Copyright 2019 Mike Dev
-# Distributed under the Boost Software License, Version 1.0.
-# See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
-
-cmake_minimum_required( VERSION 3.5...4.20 )
-project( boost_conversion VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX )
-
-add_library( boost_conversion INTERFACE )
-add_library( Boost::conversion ALIAS boost_conversion )
-
-target_include_directories( boost_conversion INTERFACE include )
-
-target_link_libraries( boost_conversion
-    INTERFACE
-        Boost::assert
-        Boost::config
-        Boost::throw_exception
-)
-
-if(BUILD_TESTING)
-  add_subdirectory(test)
-endif()
@@ -1,15 +0,0 @@
-# [Boost.Conversion](https://boost.org/libs/conversion)
-Boost.Conversion is one of the [Boost C++ Libraries](https://github.com/boostorg). This library improves program safety and clarity by performing otherwise messy conversions. 
-
-### Test results
-
-@               | Build         | Tests coverage | More info
----------------|-------------- | -------------- |-----------
-Develop branch: | [![CI](https://github.com/boostorg/conversion/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/boostorg/conversion/actions/workflows/ci.yml) [![Build status](https://ci.appveyor.com/api/projects/status/1cky1hrunfa46bdx/branch/develop?svg=true)](https://ci.appveyor.com/project/apolukhin/conversion/branch/develop) | [![Coverage Status](https://coveralls.io/repos/github/boostorg/conversion/badge.svg?branch=develop)](https://coveralls.io/github/boostorg/conversion?branch=develop) | [details...](https://regression.boost.io/develop/developer/conversion.html)
-Master branch:  | [![CI](https://github.com/boostorg/conversion/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/boostorg/conversion/actions/workflows/ci.yml) [![Build status](https://ci.appveyor.com/api/projects/status/1cky1hrunfa46bdx/branch/master?svg=true)](https://ci.appveyor.com/project/apolukhin/conversion/branch/master) | [![Coverage Status](https://coveralls.io/repos/github/boostorg/conversion/badge.svg?branch=master)](https://coveralls.io/github/boostorg/conversion?branch=master) | [details...](https://regression.boost.io/master/developer/conversion.html)
-
-[Latest developer documentation](https://www.boost.org/doc/libs/develop/doc/html/conversion.html)
-
-### License
-
-Distributed under the [Boost Software License, Version 1.0](https://boost.org/LICENSE_1_0.txt).
@@ -1,25 +0,0 @@
-# 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/throw_exception//boost_throw_exception ;
-
-project /boost/conversion
-    : common-requirements
-        <include>include
-    ;
-
-explicit
-    [ alias boost_conversion : : : : <library>$(boost_dependencies) ]
-    [ alias all : boost_conversion test ]
-    ;
-
-call-if : boost-library conversion
-    ;
-
@@ -0,0 +1,140 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+
+<html>
+  <head>
+    <meta name="generator" content=
+    "Microsoft FrontPage 5.0">
+    <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="../../boost.png" alt="boost.png (6897 bytes)" align=
+    "middle" 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 header <a href="../../boost/cast.hpp">boost/cast.hpp</a> provides <code>
+    <a href="#Polymorphic_cast">polymorphic_cast</a> and</code> <a href=
+    "#Polymorphic_cast"><code>polymorphic_downcast</code></a> function templates designed to
+    complement the C++ built-in casts.</p>
+
+    <p>The program <a href="cast_test.cpp">cast_test.cpp</a> can be used to
+    verify these function templates work as expected.</p>
+
+    <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.
+    Downcasting means casting from a base class to a derived class.
+    Crosscasting means casting across an inheritance hierarchy diagram, such
+    as from one base to the other in a <code>Y</code> diagram hierarchy.</p>
+
+    <p>Such casts can be done with old-style casts, but this approach is
+    never to be recommended. 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 <code>static_cast</code> 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 <code>polymorphic_downcast</code> template retains
+    the efficiency of <code>static_cast</code> for non-debug compilations, but for
+    debug compilations adds safety via an assert() that a <code>dynamic_cast</code>
+    succeeds.</p>
+
+    <p>The C++ built-in <code>dynamic_cast</code> 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. The throwing form of <code>dynamic_cast</code>, which
+    works on references, can be used on pointers through the ugly expression
+    &amp;<code>dynamic_cast&lt;T&amp;&gt;(*p)</code>, which causes undefined
+    behavior if <code>p</code> is <code>0</code>. The <code>polymorphic_cast</code>
+    template performs a <code>dynamic_cast</code> on a pointer, and throws an
+    exception if the <code>dynamic_cast</code> returns 0.</p>
+
+    <p>A <code>polymorphic_downcast</code> should be used for
+    downcasts that you are certain should succeed.  Error checking is
+    only performed in translation units where <code>NDEBUG</code> is
+    not defined, via
+<pre>  assert( dynamic_cast&lt;Derived&gt;(x) == x )
+</pre> where <code>x</code> is the source pointer.  This approach
+    ensures that not only is a non-zero pointer returned, but also
+    that it is correct in the presence of multiple inheritance.
+    Attempts to crosscast using <code>polymorphic_downcast</code> will
+    fail to compile.
+    <b>Warning:</b> Because <code>polymorphic_downcast</code> uses assert(), it
+    violates the One Definition Rule (ODR) if NDEBUG is inconsistently
+    defined across translation units. [See ISO Std 3.2]
+</p><p>
+    For crosscasts, or when the success of a cast can only be known at
+    runtime, or when efficiency is not important,
+    <code>polymorphic_cast</code> is preferred. </p>
+
+    <p>The C++ built-in <code>dynamic_cast</code> must be used to cast references
+    rather than pointers. 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>namespace boost {
+
+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>History</h3>
+
+    <p><code>polymorphic_cast</code> was suggested by Bjarne Stroustrup in "The C++
+    Programming Language".<br>
+     <code>polymorphic_downcast</code> was contributed by <a href=
+    "../../people/dave_abrahams.htm">Dave Abrahams</a>.<code><br>
+     An old
+     numeric_cast</code> that was contributed by <a href=
+    "../../people/kevlin_henney.htm">Kevlin Henney</a> is now superseeded by the <a href="../numeric/conversion/doc/index.html">Boost Numeric Conversion Library</a></p>
+    <hr>
+
+    <p>Revised
+    <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B, %Y" startspan
+                    -->June 23, 2005<!--webbot bot="Timestamp" endspan i-checksum="30348"
+                    --></p>
+
+    <p>&copy; 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 "as is" without express
+    or implied warranty, and with no claim as to its suitability for any
+    purpose.</p>
+  </body>
+</html>
@@ -14,8 +14,13 @@
 //    3 Aug 99  Initial Version

 #include <iostream>
-#include <boost/polymorphic_cast.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <climits>
+#include <cfloat>   // for DBL_MAX (Peter Schmid)
+#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;
@@ -38,48 +43,6 @@ namespace
    };
 }

-constexpr bool compile_time_polymorphic_cast_check() {
-#if defined(__cpp_constexpr) && __cpp_constexpr >= 201907L
-    Derived derived;
-    Base* base = &derived;
-    return polymorphic_cast<Derived*>(base) != nullptr;
-#endif
-    return true;
-}
-
-static_assert(
-    compile_time_polymorphic_cast_check(),
-    "polymorphic_cast does not work at compile time"
-);
-
-constexpr bool compile_time_polymorphic_downcast_check() {
-#if defined(__cpp_constexpr) && __cpp_constexpr >= 201907L
-    Derived derived;
-    Base* base = &derived;
-    return polymorphic_downcast<Derived*>(base) != nullptr;
-#endif
-    return true;
-}
-
-static_assert(
-    compile_time_polymorphic_downcast_check(),
-    "polymorphic_downcast does not work at compile time"
-);
-
-constexpr bool compile_time_polymorphic_downcast2_check() {
-#if defined(__cpp_constexpr) && __cpp_constexpr >= 201907L
-    Derived derived;
-    Base& base = derived;
-    Derived& derived_again = polymorphic_downcast<Derived&>(base);
-    (void)derived_again;
-#endif
-    return true;
-}
-
-static_assert(
-    compile_time_polymorphic_downcast2_check(),
-    "polymorphic_downcast does not work at compile time"
-);

 int main( int argc, char * argv[] )
 {
@@ -94,31 +57,35 @@ int main( int argc, char * argv[] )
 //  test polymorphic_cast  ---------------------------------------------------//

    //  tests which should succeed
-    Derived derived_instance;
-    Base * base = &derived_instance;
-    Derived * derived = polymorphic_downcast<Derived*>( base );  // downcast
-    BOOST_TEST( derived->kind() == 'D' );
+    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
-    BOOST_TEST( derived->kind() == 'D' );
+    assert( derived->kind() == 'D' );

-    Base2 *   base2 =  polymorphic_cast<Base2*>( base ); // crosscast
-    BOOST_TEST( base2->kind2() == '2' );
+    base2 = polymorphic_cast<Base2*>( base ); // crosscast
+    assert( base2->kind2() == '2' );

     //  tests which should result in errors being detected
-    Base base_instance;
-    base = &base_instance;
+    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 (const std::bad_cast&)
+    catch (std::bad_cast)
        { cout<<"caught bad_cast\n"; caught_exception = true; }
-    BOOST_TEST( caught_exception );
+    if ( !caught_exception ) ++err_count;
    //  the following is just so generated code can be inspected
-    BOOST_TEST( derived->kind() != 'B' );
+    if ( derived->kind() == 'B' ) ++err_count;

-    return boost::report_errors();
+    cout << err_count << " errors detected\nTest "
+         << (err_count==0 ? "passed\n" : "failed\n");
+    return err_count;
 }   // main
@@ -1,38 +0,0 @@
-#   Copyright (c) 2016 Mikhail Maximov <vigorous.activity -at- 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)
-
-project doc/conversion ;
-
-using quickbook ;
-import boostbook ;
-
-xml conversion : conversion.qbk ;
-boostbook standalone
-    :
-        conversion
-    :
-        <xsl:param>boost.root=../../../..
-        # File name of HTML output:
-        <xsl:param>root.filename=conversion
-        # How far down we chunk nested sections, basically all of them:
-        <xsl:param>chunk.section.depth=0
-        # Don't put the first section on the same page as the TOC:
-        <xsl:param>chunk.first.sections=0
-        # How far down sections get TOC's
-        <xsl:param>toc.section.depth=2
-        # Max depth in each TOC:
-        <xsl:param>toc.max.depth=2
-        # How far down we go with TOC's
-        <xsl:param>generate.section.toc.level=0
-
-        <xsl:param>generate.manifest=0
-     ;
-
-###############################################################################
-alias boostdoc : conversion ;
-explicit boostdoc ;
-alias boostrelease ;
-explicit boostrelease ;
@@ -1,215 +0,0 @@
-[/
-    Copyright 2016 Mikhail Maximov.
-    Copyright Antony Polukhin, 2020-2026.
-
-    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>)
-]
-
-[article The Conversion Library
-    [quickbook 1.6]
-    [compatibility-mode 1.5]
-    [id conversion]
-    [version 1.7]
-    [authors [Stroustrup, Bjarne], [Abrahams, Dave], [Rasin, Boris], [Polukhin, Antony]]
-    [copyright 2001 Beman Dawes, 2014-2026 Antony Polukhin]
-    [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])
-    ]
-    [source-mode c++]
-]
-
-[/ QuickBook Document version 1.5 ]
-[/ Dec, 2016 ]
-
-[section Description]
-
-The Conversion Library improves program safety and clarity by performing
-otherwise messy conversions. It includes cast-style function templates designed 
-to complement the C++ Standard's built-in casts.
-
-To reduce coupling, the Boost Conversion Library is supplied by several headers:
-
-# The [@boost:boost/polymorphic_cast.hpp boost/polymorphic_cast.hpp] header
-  provides [link polymorphic_cast `polymorphic_cast<>`] and
-  [link polymorphic_downcast `polymorphic_downcast<>`]
-  to perform safe casting between polymorphic types.
-# The [@boost:boost/polymorphic_pointer_cast.hpp boost/polymorphic_pointer_cast.hpp] header
-  provides [link polymorphic_pointer_cast `polymorphic_pointer_cast<>`] and
-  [link polymorphic_pointer_cast `polymorphic_pointer_downcast<>`]
-# The [@boost:boost/implicit_cast.hpp boost/implicit_cast.hpp] header provides `implicit_cast<>` 
-  to perform implicit casts only (no down-cast, no void*->T*, no U->T if T has only explicit constructors for U).
-
-[endsect]
-
-[section Polymorphic casts]
-Pointers to polymorphic objects (objects of classes which define at
-least one virtual function) are sometimes downcast or crosscast.
-Downcasting means casting from a base class to a derived class.
-Crosscasting means casting across an inheritance hierarchy diagram, such
-as from one base to the other in a [^Y] diagram hierarchy.
-
-Such casts can be done with old-style casts, but this approach is
-never to be recommended. Old-style casts are sorely lacking in type
-safety, suffer poor readability, and are difficult to locate with search
-tools.
-
-[#polymorphic_downcast]
-[section polymorphic_downcast]
-
-The C++ built-in `static_cast` 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 `polymorphic_downcast` template retains
-the efficiency of `static_cast` for non-debug compilations, but for
-debug compilations adds safety via an `assert()` that a `dynamic_cast`
-succeeds.
-
-A `polymorphic_downcast` should be used for
-downcasts that you are certain should succeed. Error checking is
-only performed in translation units where `NDEBUG` is
-not defined, via
-```
-    assert( dynamic_cast<Derived>(x) == x )
-```
-where `x` is the source pointer.  This approach
-ensures that not only is a non-zero pointer returned, but also
-that it is correct in the presence of multiple inheritance.
-Attempts to crosscast using `polymorphic_downcast` will
-fail to compile.
-
-[warning Because `polymorphic_downcast` uses `assert()`, it
-violates the One Definition Rule (ODR) if `NDEBUG` is inconsistently
-defined across translation units. See ISO Std 3.2]
-
-[h4 Example:]
-```
-    #include <boost/polymorphic_cast.hpp>
-    ...
-    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<Banana*>(fruit);
-      ...
-    }
-```
-[endsect]
-
-[#polymorphic_cast]
-[section polymorphic_cast]
-
-The C++ built-in `dynamic_cast` 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. The throwing form of `dynamic_cast`, which
-works on references, can be used on pointers through the ugly expression
-`&dynamic_cast<T&>(*p)`, which causes undefined
-behavior if `p` is `0`. The `polymorphic_cast`
-template performs a `dynamic_cast` on a pointer, and throws an
-exception if the `dynamic_cast` returns 0.
-
-For crosscasts, or when the success of a cast can only be known at runtime, 
-or when efficiency is not important, `polymorphic_cast` is preferred.
-
-The C++ built-in `dynamic_cast` must be used to cast references rather than pointers.
-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.
-
-[endsect]
-
-
-[#polymorphic_pointer_cast]
-[section polymorphic_pointer_cast]
-While `polymorphic_downcast` and `polymorphic_cast` work with built-in pointer types only,
-`polymorphic_pointer_downcast` and `polymorphic_pointer_cast` are more generic versions
-with support for any pointer type for which the following expressions would be valid:
-
-For `polymorphic_pointer_downcast`:
-```
-    static_pointer_cast<Derived>(p);
-    dynamic_pointer_cast<Derived>(p);
-```
-For `polymorphic_pointer_cast`:
-```
-    dynamic_pointer_cast<Derived>(p);
-    !p; // conversion to bool with negation
-```
-
-This includes C++ built-in pointers, `std::shared_ptr`,
-`boost::shared_ptr`, `boost::intrusive_ptr`, etc.
-
-
-[h4 Example:]
-```
-    #include <boost/polymorphic_pointer_cast.hpp>
-
-    class Fruit { public: virtual ~Fruit(){} };
-    class Banana : public Fruit {};
-
-    // Use one of these:
-    using FruitPtr = Fruit*;
-    using FruitPtr = std::shared_ptr<Fruit>;
-    using FruitPtr = boost::shared_ptr<Fruit>;
-    using FruitPtr = boost::intrusive_ptr<Fruit>;
-
-    void f(FruitPtr fruit) {
-      // ... logic which leads us to believe it is a banana
-      auto banana = boost::polymorphic_pointer_downcast<Banana>(fruit);
-      ...
-    }
-```
-
-[endsect]
-
-[endsect]
-
-[section Synopsis]
-```
-    namespace boost {
-
-    // Throws: std::bad_cast if ( dynamic_cast<Derived>(x) == 0 )
-    // Returns: dynamic_cast<Derived>(x)
-    template <class Derived, class Base>
-    constexpr Derived polymorphic_cast(Base* x);
-
-    // Effects: assert( dynamic_cast<Derived>(x) == x );
-    // Returns: static_cast<Derived>(x)
-    template <class Derived, class Base>
-    constexpr Derived polymorphic_downcast(Base* x);
-
-    // Effects: assert( dynamic_cast<Derived>(&x) == &x );
-    // Returns: static_cast<Derived>(x)
-    template <class Derived, class Base>
-    constexpr Derived polymorphic_downcast(Base& x);
-
-    // Throws: std::bad_cast if ( dynamic_pointer_cast<Derived>(x) == 0 )
-    // Returns: dynamic_pointer_cast<Derived>(x)
-    template <class Derived, class Base>
-    inline auto polymorphic_pointer_cast(Base x);
-
-    // Effects: assert( dynamic_pointer_cast<Derived>(x) == x );
-    // Returns: static_pointer_cast<Derived>(x)
-    template <class Derived, class Base>
-    inline auto polymorphic_pointer_downcast(Base x);
-
-    }
-```
-[endsect]
-
-
-[section History]
-`polymorphic_cast` was suggested by Bjarne Stroustrup in "The C++ Programming Language".
-
-`polymorphic_downcast` was contributed by [@http://www.boost.org/people/dave_abrahams.htm Dave Abrahams].
-
-`polymorphic_pointer_downcast` was contributed by [@http://www.boost.org/people/boris_rasin.htm Boris Rasin]
-and `polymorphic_pointer_cast` by Antony Polukhin.
-
-`polymorphic_downcast` overload for references was contributed by Julien Delacroix.
-
-An old `numeric_cast` that was contributed by [@http://www.boost.org/people/kevlin_henney.htm Kevlin Henney]
-is now superseded by the [@boost:numeric_conversion/doc/html/html/boost_numericconversion/improved_numeric_cast__.html Boost Numeric Conversion Library]
-[endsect]
@@ -1,7 +1,6 @@
-//  boost polymorphic_cast.hpp header file  ----------------------------------------------//
+//  boost cast.hpp header file  ----------------------------------------------//

 //  (C) Copyright Kevlin Henney and Dave Abrahams 1999.
-//  (C) Copyright Boris Rasin 2014.
 //  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)
@@ -9,12 +8,7 @@
 //  See http://www.boost.org/libs/conversion for Documentation.

 //  Revision History
-//  10 Nov 14  polymorphic_pointer_downcast moved to a separate header,
-//             minor improvements to stisfy latest Boost coding style
-//  08 Nov 14  Add polymorphic_pointer_downcast (Boris Rasin)
-//  09 Jun 14  "cast.hpp" was renamed to "polymorphic_cast.hpp" and
-//             inclusion of numeric_cast was removed (Antony Polukhin)
-//  23 Jun 05  numeric_cast removed and redirected to the new version (Fernando Cacciola)
+//  23 JUn 05  numeric_cast removed and redirected to the new verion (Fernando Cacciola)
 //  02 Apr 01  Removed BOOST_NO_LIMITS workarounds and included
 //             <boost/limits.hpp> instead (the workaround did not
 //             actually compile when BOOST_NO_LIMITS was defined in
@@ -31,7 +25,7 @@
 //  19 Oct 00  Fix numeric_cast for floating-point types (Dave Abrahams)
 //  15 Jul 00  Suppress numeric_cast warnings for GCC, Borland and MSVC
 //             (Dave Abrahams)
-//  30 Jun 00  More MSVC6 workarounds.  See comments below.  (Dave Abrahams)
+//  30 Jun 00  More MSVC6 wordarounds.  See comments below.  (Dave Abrahams)
 //  28 Jun 00  Removed implicit_cast<>.  See comment below. (Beman Dawes)
 //  27 Jun 00  More MSVC6 workarounds
 //  15 Jun 00  Add workarounds for MSVC6
@@ -46,27 +40,26 @@
 //             place in nested namespace.
 //   3 Aug 99  Initial version

-#ifndef BOOST_POLYMORPHIC_CAST_HPP
-#define BOOST_POLYMORPHIC_CAST_HPP
-
-#include <boost/config.hpp>
-
-#ifdef BOOST_HAS_PRAGMA_ONCE
-#   pragma once
-#endif
+#ifndef BOOST_CAST_HPP
+#define BOOST_CAST_HPP

+# include <boost/config.hpp>
 # include <boost/assert.hpp>
-# include <boost/throw_exception.hpp>
-
-# include <memory>  // std::addressof
 # include <typeinfo>
-# include <type_traits>
+# include <boost/type.hpp>
+# include <boost/limits.hpp>
+# include <boost/detail/select_type.hpp>

-#if defined(__cpp_constexpr) && __cpp_constexpr >= 201907L
-#define BOOST_CONVERSION_IMPL_CONSTEXPR_DYN_CAST constexpr
-#else
-#define BOOST_CONVERSION_IMPL_CONSTEXPR_DYN_CAST inline
-#endif
+//  It has been demonstrated numerous times that MSVC 6.0 fails silently at link
+//  time if you use a template function which has template parameters that don't
+//  appear in the function's argument list.
+//
+//  TODO: Add this to config.hpp?
+# if defined(BOOST_MSVC) && BOOST_MSVC < 1300
+#  define BOOST_EXPLICIT_DEFAULT_TARGET , ::boost::type<Target>* = 0
+# else
+#  define BOOST_EXPLICIT_DEFAULT_TARGET
+# endif

 namespace boost
 {
@@ -80,16 +73,16 @@ namespace boost
    //  section 15.8 exercise 1, page 425.

    template <class Target, class Source>
-    BOOST_CONVERSION_IMPL_CONSTEXPR_DYN_CAST Target polymorphic_cast(Source* x)
+    inline Target polymorphic_cast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
    {
        Target tmp = dynamic_cast<Target>(x);
-        if ( tmp == 0 ) boost::throw_exception( std::bad_cast() );
+        if ( tmp == 0 ) throw std::bad_cast();
        return tmp;
    }

 //  polymorphic_downcast  ----------------------------------------------------//

-    //  BOOST_ASSERT() checked raw pointer polymorphic downcast.  Crosscasts prohibited.
+    //  BOOST_ASSERT() checked polymorphic downcast.  Crosscasts prohibited.

    //  WARNING: Because this cast uses BOOST_ASSERT(), it violates
    //  the One Definition Rule if used in multiple translation units
@@ -99,34 +92,16 @@ namespace boost
    //  Contributed by Dave Abrahams

    template <class Target, class Source>
-    BOOST_CONVERSION_IMPL_CONSTEXPR_DYN_CAST Target polymorphic_downcast(Source* x)
+    inline Target polymorphic_downcast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
    {
        BOOST_ASSERT( dynamic_cast<Target>(x) == x );  // detect logic error
        return static_cast<Target>(x);
    }

-    //  BOOST_ASSERT() checked reference polymorphic downcast.  Crosscasts prohibited.
-
-    //  WARNING: Because this cast uses BOOST_ASSERT(), it violates
-    //  the One Definition Rule if used in multiple translation units
-    //  where BOOST_DISABLE_ASSERTS, BOOST_ENABLE_ASSERT_HANDLER
-    //  NDEBUG are defined inconsistently.
-
-    //  Contributed by Julien Delacroix
-
-    template <class Target, class Source>
-    BOOST_CONVERSION_IMPL_CONSTEXPR_DYN_CAST typename std::enable_if<
-        std::is_reference<Target>::value, Target
-    >::type polymorphic_downcast(Source& x)
-    {
-        using target_pointer_type = typename std::remove_reference<Target>::type*;
-        return *boost::polymorphic_downcast<target_pointer_type>(
-            std::addressof(x)
-        );
-    }
+#  undef BOOST_EXPLICIT_DEFAULT_TARGET

 } // namespace boost

-#undef BOOST_CONVERSION_IMPL_CONSTEXPR_DYN_CAST
+# include <boost/numeric/conversion/cast.hpp>

-#endif  // BOOST_POLYMORPHIC_CAST_HPP
+#endif  // BOOST_CAST_HPP
@@ -2,37 +2,28 @@
 // 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)
+#ifndef IMPLICIT_CAST_DWA200356_HPP
+# define IMPLICIT_CAST_DWA200356_HPP

-#ifndef BOOST_IMPLICIT_CAST_DWA200356_HPP
-#define BOOST_IMPLICIT_CAST_DWA200356_HPP
-
-#include <boost/config.hpp>
-#ifdef BOOST_HAS_PRAGMA_ONCE
-# pragma once
-#endif
+# include <boost/mpl/identity.hpp>

 namespace boost {

-namespace detail {
-
-template<class T> struct icast_identity
-{
-    using type = T;
-};
-
-} // namespace detail
-
 // implementation originally suggested by C. Green in
 // http://lists.boost.org/MailArchives/boost/msg00886.php

 // The use of identity creates a non-deduced form, so that the
 // explicit template argument must be supplied
 template <typename T>
-constexpr T implicit_cast (typename boost::detail::icast_identity<T>::type x) {
+inline T implicit_cast (typename mpl::identity<T>::type x) {
    return x;
 }

+// incomplete return type now is here
+//template <typename T>
+//void implicit_cast (...);
+
+
 } // namespace boost

-
-#endif // BOOST_IMPLICIT_CAST_DWA200356_HPP
+#endif // IMPLICIT_CAST_DWA200356_HPP
@@ -0,0 +1,252 @@
+#ifndef BOOST_LEXICAL_CAST_INCLUDED
+#define BOOST_LEXICAL_CAST_INCLUDED
+
+// Boost lexical_cast.hpp header  -------------------------------------------//
+//
+// See http://www.boost.org for most recent version including documentation.
+// See end of this header for rights and permissions.
+//
+// what:  lexical_cast custom keyword cast
+// who:   contributed by Kevlin Henney,
+//        enhanced with contributions from Terje Slettebø,
+//        with additional fixes and suggestions from Gennaro Prota,
+//        Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
+//        and other Boosters
+// when:  November 2000, March 2003, June 2005
+
+#include <cstddef>
+#include <string>
+#include <typeinfo>
+#include <boost/config.hpp>
+#include <boost/limits.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+
+#ifdef BOOST_NO_STRINGSTREAM
+#include <strstream>
+#else
+#include <sstream>
+#endif
+
+#if defined(BOOST_NO_STRINGSTREAM) || \
+    defined(BOOST_NO_STD_WSTRING) || \
+    defined(BOOST_NO_STD_LOCALE) 
+#define DISABLE_WIDE_CHAR_SUPPORT
+#endif
+
+namespace boost
+{
+    // exception used to indicate runtime lexical_cast failure
+    class bad_lexical_cast : public std::bad_cast
+    {
+    public:
+        bad_lexical_cast() :
+        source(&typeid(void)), target(&typeid(void))
+        {
+        }
+        bad_lexical_cast(
+            const std::type_info &source_type,
+            const std::type_info &target_type) :
+            source(&source_type), target(&target_type)
+        {
+        }
+        const std::type_info &source_type() const
+        {
+            return *source;
+        }
+        const std::type_info &target_type() const
+        {
+            return *target;
+        }
+        virtual const char *what() const throw()
+        {
+            return "bad lexical cast: "
+                   "source type value could not be interpreted as target";
+        }
+        virtual ~bad_lexical_cast() throw()
+        {
+        }
+    private:
+        const std::type_info *source;
+        const std::type_info *target;
+    };
+
+    namespace detail // selectors for choosing stream character type
+    {
+        template<typename Type>
+        struct stream_char
+        {
+            typedef char type;
+        };
+
+        #ifndef DISABLE_WIDE_CHAR_SUPPORT
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+        template<>
+        struct stream_char<wchar_t>
+        {
+            typedef wchar_t type;
+        };
+#endif
+
+        template<>
+        struct stream_char<wchar_t *>
+        {
+            typedef wchar_t type;
+        };
+
+        template<>
+        struct stream_char<const wchar_t *>
+        {
+            typedef wchar_t type;
+        };
+
+        template<>
+        struct stream_char<std::wstring>
+        {
+            typedef wchar_t type;
+        };
+        #endif
+
+        template<typename TargetChar, typename SourceChar>
+        struct widest_char
+        {
+            typedef TargetChar type;
+        };
+
+        template<>
+        struct widest_char<char, wchar_t>
+        {
+            typedef wchar_t type;
+        };
+    }
+    
+    namespace detail // stream wrapper for handling lexical conversions
+    {
+        template<typename Target, typename Source>
+        class lexical_stream
+        {
+        private:
+            typedef typename widest_char<
+                typename stream_char<Target>::type,
+                typename stream_char<Source>::type>::type char_type;
+
+        public:
+            lexical_stream()
+            {
+                stream.unsetf(std::ios::skipws);
+
+                if(std::numeric_limits<Target>::is_specialized)
+                    stream.precision(std::numeric_limits<Target>::digits10 + 1);
+                else if(std::numeric_limits<Source>::is_specialized)
+                    stream.precision(std::numeric_limits<Source>::digits10 + 1);
+            }
+            ~lexical_stream()
+            {
+                #if defined(BOOST_NO_STRINGSTREAM)
+                stream.freeze(false);
+                #endif
+            }
+            bool operator<<(const Source &input)
+            {
+                return !(stream << input).fail();
+            }
+            template<typename InputStreamable>
+            bool operator>>(InputStreamable &output)
+            {
+                return !is_pointer<InputStreamable>::value &&
+                       stream >> output &&
+                       stream.get() ==
+#if defined(__GNUC__) && (__GNUC__<3) && defined(BOOST_NO_STD_WSTRING)
+// GCC 2.9x lacks std::char_traits<>::eof().
+// We use BOOST_NO_STD_WSTRING to filter out STLport and libstdc++-v3
+// configurations, which do provide std::char_traits<>::eof().
+    
+                           EOF;
+#else
+                           std::char_traits<char_type>::eof();
+#endif
+            }
+            bool operator>>(std::string &output)
+            {
+                #if defined(BOOST_NO_STRINGSTREAM)
+                stream << '\0';
+                #endif
+                output = stream.str();
+                return true;
+            }
+            #ifndef DISABLE_WIDE_CHAR_SUPPORT
+            bool operator>>(std::wstring &output)
+            {
+                output = stream.str();
+                return true;
+            }
+            #endif
+        private:
+            #if defined(BOOST_NO_STRINGSTREAM)
+            std::strstream stream;
+            #elif defined(BOOST_NO_STD_LOCALE)
+            std::stringstream stream;
+            #else
+            std::basic_stringstream<char_type> stream;
+            #endif
+        };
+    }
+
+    #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+    // call-by-const reference version
+
+    namespace detail
+    {
+        template<class T>
+        struct array_to_pointer_decay
+        {
+            typedef T type;
+        };
+
+        template<class T, std::size_t N>
+        struct array_to_pointer_decay<T[N]>
+        {
+            typedef const T * type;
+        };
+    }
+
+    template<typename Target, typename Source>
+    Target lexical_cast(const Source &arg)
+    {
+        typedef typename detail::array_to_pointer_decay<Source>::type NewSource;
+
+        detail::lexical_stream<Target, NewSource> interpreter;
+        Target result;
+
+        if(!(interpreter << arg && interpreter >> result))
+            throw_exception(bad_lexical_cast(typeid(NewSource), typeid(Target)));
+        return result;
+    }
+
+    #else
+
+    // call-by-value fallback version (deprecated)
+
+    template<typename Target, typename Source>
+    Target lexical_cast(Source arg)
+    {
+        detail::lexical_stream<Target, Source> interpreter;
+        Target result;
+
+        if(!(interpreter << arg && interpreter >> result))
+            throw_exception(bad_lexical_cast(typeid(Source), typeid(Target)));
+        return result;
+    }
+
+    #endif
+}
+
+// Copyright Kevlin Henney, 2000-2005. All rights reserved.
+//
+// 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)
+
+#undef DISABLE_WIDE_CHAR_SUPPORT
+#endif
@@ -1,60 +0,0 @@
-//  boost polymorphic_pointer_cast.hpp header file  ----------------------------------------------//
-//  (C) Copyright Boris Rasin, 2014-2021.
-//  (C) Copyright Antony Polukhin, 2014-2026.
-//  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/conversion for Documentation.
-
-#ifndef BOOST_CONVERSION_POLYMORPHIC_POINTER_CAST_HPP
-#define BOOST_CONVERSION_POLYMORPHIC_POINTER_CAST_HPP
-
-#include <boost/config.hpp>
-#ifdef BOOST_HAS_PRAGMA_ONCE
-#   pragma once
-#endif
-
-# include <boost/assert.hpp>
-# include <boost/pointer_cast.hpp>
-# include <boost/throw_exception.hpp>
-
-
-namespace boost
-{
-//  See the documentation for descriptions of how to choose between
-//  static_pointer_cast<>, dynamic_pointer_cast<>, polymorphic_pointer_cast<> and polymorphic_pointer_downcast<>
-
-//  polymorphic_pointer_downcast  --------------------------------------------//
-
-    //  BOOST_ASSERT() checked polymorphic downcast.  Crosscasts prohibited.
-    //  Supports any type with static_pointer_cast/dynamic_pointer_cast functions:
-    //  built-in pointers, std::shared_ptr, boost::shared_ptr, boost::intrusive_ptr, etc.
-
-    //  WARNING: Because this cast uses BOOST_ASSERT(), it violates
-    //  the One Definition Rule if used in multiple translation units
-    //  where BOOST_DISABLE_ASSERTS, BOOST_ENABLE_ASSERT_HANDLER
-    //  NDEBUG are defined inconsistently.
-
-    //  Contributed by Boris Rasin
-
-    template <typename Target, typename Source>
-    inline auto polymorphic_pointer_downcast (const Source& x)
-        -> decltype(static_pointer_cast<Target>(x))
-    {
-        BOOST_ASSERT(dynamic_pointer_cast<Target> (x) == x);
-        return static_pointer_cast<Target> (x);
-    }
-
-    template <typename Target, typename Source>
-    inline auto polymorphic_pointer_cast (const Source& x)
-        -> decltype(dynamic_pointer_cast<Target>(x))
-    {
-        auto tmp = dynamic_pointer_cast<Target> (x);
-        if ( !tmp ) boost::throw_exception( std::bad_cast() );
-        return tmp;
-    }
-
-} // namespace boost
-
-#endif  // BOOST_CONVERSION_POLYMORPHIC_POINTER_CAST_HPP
@@ -1,39 +1,38 @@
-<!DOCTYPE html>
-<!--
- Copyright (c) 2016 Mikhail Maximov
- vigorous.activity at gmail dot com
-
- Copyright (c) Antony Polukhin, 2021-2026
-
- 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)
-
-boost-no-inspect
-->
 <html>
+
 <head>
-<meta charset="utf-8">
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-    &copy; Antony Polukhin, 2014-2024
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+
+<body bgcolor="#FFFFFF" text="#000000">
+
+<h1><img border="0" src="../../boost.png" align="center" width="277" height="86">Boost
+Conversion Library</h1>
+
+<p>The Conversion Library improves program safety and clarity by performing
+otherwise messy conversions.&nbsp; It includes cast-style function templates designed to complement the C++
+Standard's built-in casts.</p>
+<p>To reduce coupling, particularly to standard library IOStreams, the Boost
+Conversion Library is
+supplied by several headers:</p>
+<ul>
+  <li>The <a href="cast.htm">boost/cast</a> header provides <b>polymorphic_cast&lt;&gt;</b>
+    and <b>polymorphic_downcast&lt;&gt;</b> to perform safe casting between
+  polymorphic types.<br>
+  </li>
+  <li>The <a href="lexical_cast.htm">boost/lexical_cast</a> header provides <b>lexical_cast&lt;&gt;</b>
+    general literal text conversions, such as an <code>int</code> represented as
+    a <code>string</code>, or vice-versa.</li>
+</ul>
+<hr>
+<p>Revised <!--webbot bot="Timestamp" S-Type="EDITED"
+S-Format="%d %B, %Y" startspan -->June 23, 2005<!--webbot bot="Timestamp" endspan i-checksum="30348" -->
+</p>
+
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+
+</html>
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+<!-- saved from url=(0022)http://internet.e-mail -->
+<!doctype html public "-//W3C//DTD HTML Transitional 4.0//EN">
+<html>
+	<head>
+		<title>lexical_cast</title>
+		<meta name="author" content="Kevlin Henney, mailto:kevlin@curbralan.com">
+		<meta name="generator" content="Microsoft FrontPage 5.0">
+	</head>
+	<body bgcolor="#FFFFFF" text="#000000">
+		<h1><img src="../../boost.png" alt="boost.png (6897 bytes)" align="center" width="277" height="86">Header
+			<a href="../../boost/lexical_cast.hpp">boost/lexical_cast.hpp</a></h1>
+		<ul type="square">
+			<li>
+				<a href="#motivation">Motivation</a></li>
+			<li>
+				<a href="#examples">Examples</a></li>
+			<li>
+				<a href="#synopsis">Synopsis</a></li>
+			<li>
+				<a href="#lexical_cast"><code>lexical_cast</code></a></li>
+			<li>
+				<a href="#bad_lexical_cast"><code>bad_lexical_cast</code></a></li>
+			<li>
+				<a href="#changes">Changes</a></li>
+		</ul>
+		<hr>
+		<h2><a name="motivation">Motivation</a></h2>
+		Sometimes a value must be converted to a literal text form, such as an <code>int</code>
+		represented as a <code>string</code>, or vice-versa, when a <code>string</code> 
+		is interpreted as an <code>int</code>. Such examples are common when converting 
+		between data types internal to a program and representation external to a 
+		program, such as windows and configuration files.
+		<p>
+		The standard C and C++ libraries offer a number of facilities for performing 
+		such conversions. However, they vary with their ease of use, extensibility, and 
+		safety.
+		<p>
+			For instance, there are a number of limitations with the family of standard C 
+			functions typified by <code>atoi</code>:
+			<ul type="square">
+				<li>
+					Conversion is supported in one direction only: from text to internal data type. 
+					Converting the other way using the C library requires either the inconvenience 
+					and compromised safety of the <code>sprintf</code> function, or the loss of 
+					portability associated with non-standard functions such as <code>itoa</code>.
+				</li>
+				<li>
+					The range of types supported is only a subset of the built-in numeric types, 
+					namely <code>int</code>, <code>long</code>, and <code>double</code>.
+				</li>
+				<li>
+					The range of types cannot be extended in a uniform manner. For instance, 
+					conversion from string representation to <code>complex</code> or <code>rational</code>.
+				</li>
+			</ul>
+			The standard C functions typified by <code>strtol</code> have the same basic 
+			limitations, but offer finer control over the conversion process. However, for 
+			the common case such control is often either not required or not used. The <code>scanf</code>
+		family of functions offer even greater control, but also lack safety and ease 
+		of use.
+		<p>
+			The standard C++ library offers <code>stringstream</code> for the kind of 
+			in-core formatting being discussed. It offers a great deal of control over the 
+			formatting and conversion of I/O to and from arbitrary types through text. 
+			However, for simple conversions direct use of <code>stringstream</code> can be 
+			either clumsy (with the introduction of extra local variables and the loss of 
+			infix-expression convenience) or obscure (where <code>stringstream</code>
+		objects are created as temporary objects in an expression). Facets provide a 
+		comprehensive concept and facility for controlling textual representation, but 
+		their perceived complexity and high entry level requires an extreme degree of 
+		involvement for simple conversions, and excludes all but a few programmers.
+		<p>
+			The <code>lexical_cast</code> function template offers a convenient and 
+			consistent form for supporting common conversions to and from arbitrary types 
+			when they are represented as text. The simplification it offers is in 
+			expression-level convenience for such conversions. For more involved 
+			conversions, such as where precision or formatting need tighter control than is 
+			offered by the default behavior of <code>lexical_cast</code>, the conventional <code>
+				stringstream</code> approach is recommended. Where the conversions are 
+			numeric to numeric, <code><a href="../numeric/conversion/doc/numeric_cast.html">numeric_cast</a></code>
+			may offer more reasonable behavior than <code>lexical_cast</code>.
+		<p>
+			For a good discussion of the options and issues involved in string-based 
+			formatting, including comparison of <code>stringstream</code>, <code>lexical_cast</code>, 
+			and others, see Herb Sutter's article, <a href="http://www.gotw.ca/publications/mill19.htm">
+				<i>The String Formatters of Manor Farm</i></a>.
+		<p>
+			<hr>
+			<h2><a name="examples">Examples</a></h2>
+			The following example treats command line arguments as a sequence of numeric 
+			data: <blockquote>
+				<pre>int main(int argc, char * argv[])
+{
+    using boost::lexical_cast;
+    using boost::bad_lexical_cast;
+
+    std::vector&lt;short&gt; args;
+
+    while(*++argv)
+    {
+        try
+        {
+            args.push_back(lexical_cast&lt;short&gt;(*argv));
+        }
+        catch(bad_lexical_cast &amp;)
+        {
+            args.push_back(0);
+        }
+    }
+    ...
+}
+</pre>
+			</blockquote>The following example uses numeric data in a string expression: <blockquote>
+				<pre>void log_message(const std::string &amp;);
+
+void log_errno(int yoko)
+{
+    log_message(&quot;Error &quot; + boost::lexical_cast&lt;std::string&gt;(yoko) + &quot;: &quot; + strerror(yoko));
+}
+</pre>
+			</blockquote>
+			<hr>
+			<h2><a name="synopsis">Synopsis</a></h2>
+			Library features defined in <a href="../../boost/lexical_cast.hpp"><code>&quot;boost/lexical_cast.hpp&quot;</code></a>:
+			<blockquote>
+				<pre>namespace boost
+{
+    class <a href="#bad_lexical_cast">bad_lexical_cast</a>;
+    template&lt;typename Target, typename Source&gt;
+      Target <a href="#lexical_cast">lexical_cast</a>(const Source&amp; arg);
+}
+</pre>
+			</blockquote>Unit test defined in <a href="lexical_cast_test.cpp"><code>&quot;lexical_cast_test.cpp&quot;</code></a>.
+		<p>
+			<hr>
+			<h2><a name="lexical_cast"><code>lexical_cast</code></a></h2>
+			<blockquote>
+				<pre>template&lt;typename Target, typename Source&gt;
+  Target lexical_cast(const Source&amp; arg);
+</pre>
+			</blockquote>Returns the result of streaming <code>arg</code> into a
+			standard library string-based stream and then out as a <code>Target</code> object.
+			Where <code>Target</code> is either <code>std::string</code>
+			or <code>std::wstring</code>, stream extraction takes the whole content
+			of the string, including spaces, rather than relying on the default
+			<code>operator&gt;&gt;</code> behavior.
+			If the conversion is unsuccessful, a <a href="#bad_lexical_cast">
+				<code>bad_lexical_cast</code></a> exception is thrown.
+		<p>
+			The requirements on the argument and result types are:
+			<ul type="square">
+				<li>
+					<code>Source</code> is <i>OutputStreamable</i>, meaning that an <code>operator&lt;&lt;</code>
+					is defined that takes a <code>std::ostream</code> or <code>std::wostream</code> object on the
+					left hand side and an instance of the argument type on the right.
+				</li>
+				<li>
+					<code>Target</code> is <i>InputStreamable</i>, meaning that an <code>operator&gt;&gt;</code>
+					is defined that takes a <code>std::istream</code> or <code>std::wistream</code> object on the left hand side 
+					and an instance of the result type on the right.
+				</li>
+				<li>
+					Both <code>Source</code> and <code>Target</code> are <i>CopyConstructible</i> [20.1.3].
+				</li>
+				<li>
+					<code>Target</code> is <i>DefaultConstructible</i>, meaning that it is possible 
+					to <i>default-initialize</i> an object of that type [8.5, 20.1.4].
+				</li>
+			</ul>
+			The character type of the underlying stream is assumed to be <code>char</code> unless
+			either the <code>Source</code> or the <code>Target</code> requires wide-character
+			streaming, in which case the underlying stream uses <code>wchar_t</code>.
+			<code>Source</code> types that require wide-character streaming are <code>wchar_t</code>,
+			<code>wchar_t *</code>, and <code>std::wstring</code>. <code>Target</code> types that
+			require wide-character streaming are <code>wchar_t</code> and <code>std::wstring</code>.
+			<p>
+			Where a higher degree of control is required over conversions, <code>std::stringstream</code>
+			and <code>std::wstringstream</code> offer a more appropriate path. Where non-stream-based conversions are 
+			required, <code>lexical_cast</code>
+		is the wrong tool for the job and is not special-cased for such scenarios.
+		<p>
+			<hr>
+			<h2><a name="bad_lexical_cast"><code>bad_lexical_cast</code></a></h2>
+			<blockquote>
+				<pre>class bad_lexical_cast : public std::bad_cast
+{
+public:
+    ... // <i>same member function interface as</i> std::exception
+};
+</pre>
+			</blockquote>Exception used to indicate runtime <a href="#lexical_cast"><code>lexical_cast</code></a>
+		failure.
+			<hr>
+		
+<h2><a name="changes">Changes</a></h2>
+<h3>June 2005:</h3>
+<ul type="square">
+  <li>Call-by-const reference for the parameters. This requires partial specialization 
+    of class templates, so it doesn't work for MSVC 6, and it uses the original 
+    pass by value there.<br>
+  </li>
+  <li>The MSVC 6 support is deprecated, and will be removed in a future Boost 
+    version. </li>
+</ul>
+<h3>Earlier:</h3>
+	
+<ul type="square">
+  <li>The previous version of <code>lexical_cast</code> used the default stream 
+    precision for reading and writing floating-point numbers. For numerics that 
+    have a corresponding specialization of <code>std::numeric_limits</code>, the 
+    current version now chooses a precision to match. <br>
+  <li>The previous version of <code>lexical_cast</code> did not support conversion 
+    to or from any wide-character-based types. For compilers with full language 
+    and library support for wide characters, <code>lexical_cast</code> now supports 
+    conversions from <code>wchar_t</code>, <code>wchar_t *</code>, and <code>std::wstring</code> 
+    and to <code>wchar_t</code> and <code>std::wstring</code>. <br>
+  <li>The previous version of <code>lexical_cast</code> assumed that the conventional 
+    stream extractor operators were sufficient for reading values. However, string 
+    I/O is asymmetric, with the result that spaces play the role of I/O separators 
+    rather than string content. The current version fixes this error for <code>std::string</code> 
+    and, where supported, <code>std::wstring</code>: <code>lexical_cast&lt;std::string&gt;("Hello, 
+    World")</code> succeeds instead of failing with a <code>bad_lexical_cast</code> 
+    exception. <br>
+  <li>The previous version of <code>lexical_cast</code> allowed unsafe and meaningless 
+    conversions to pointers. The current version now throws a <code>bad_lexical_cast</code> 
+    for conversions to pointers: <code>lexical_cast&lt;char *&gt;("Goodbye, World")</code> 
+    now throws an exception instead of causing undefined behavior. 
+</ul>
+	<p>
+			<hr>
+			
+<div align="right"><small><i>&copy; Copyright Kevlin Henney, 2000&#150;2005</i></small></div>
+	</body>
+</html>
@@ -0,0 +1,320 @@
+//  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Terje Slettebø and Kevlin Henney, 2005.
+//
+//  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).
+//
+// Note: The unit test no longer compile on MSVC 6, but lexical_cast itself works for it.
+
+#include <boost/config.hpp>
+
+#if defined(__INTEL_COMPILER)
+#pragma warning(disable: 193 383 488 981 1418 1419)
+#elif defined(BOOST_MSVC)
+#pragma warning(disable: 4097 4100 4121 4127 4146 4244 4245 4511 4512 4701 4800)
+#endif
+
+#include <boost/lexical_cast.hpp>
+
+#include <boost/test/unit_test.hpp>
+#include <boost/test/floating_point_comparison.hpp>
+
+#if defined(BOOST_NO_STRINGSTREAM) || \
+    defined(BOOST_NO_STD_WSTRING) || \
+    defined(BOOST_NO_STD_LOCALE)
+#define DISABLE_WIDE_CHAR_SUPPORT
+#endif
+
+using namespace boost;
+
+void test_conversion_to_char();
+void test_conversion_to_int();
+void test_conversion_to_double();
+void test_conversion_to_bool();
+void test_conversion_to_string();
+void test_conversion_from_to_wchar_t_alias();
+void test_conversion_to_pointer();
+void test_conversion_from_wchar_t();
+void test_conversion_to_wchar_t();
+void test_conversion_from_wstring();
+void test_conversion_to_wstring();
+void test_bad_lexical_cast();
+void test_no_whitespace_stripping();
+
+unit_test::test_suite *init_unit_test_suite(int, char *[])
+{
+    unit_test_framework::test_suite *suite =
+        BOOST_TEST_SUITE("lexical_cast unit test");
+    suite->add(BOOST_TEST_CASE(test_conversion_to_char));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_int));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_double));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_bool));
+    suite->add(BOOST_TEST_CASE(test_conversion_from_to_wchar_t_alias));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_pointer));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_string));
+    #ifndef DISABLE_WIDE_CHAR_SUPPORT
+    suite->add(BOOST_TEST_CASE(test_conversion_from_wchar_t));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_wchar_t));
+    suite->add(BOOST_TEST_CASE(test_conversion_from_wstring));
+    suite->add(BOOST_TEST_CASE(test_conversion_to_wstring));
+    #endif
+    suite->add(BOOST_TEST_CASE(test_bad_lexical_cast));
+    suite->add(BOOST_TEST_CASE(test_no_whitespace_stripping));
+    return suite;
+}
+
+void test_conversion_to_char()
+{
+    BOOST_CHECK_EQUAL('A', lexical_cast<char>('A'));
+    BOOST_CHECK_EQUAL(' ', lexical_cast<char>(' '));
+    BOOST_CHECK_EQUAL('1', lexical_cast<char>(1));
+    BOOST_CHECK_EQUAL('0', lexical_cast<char>(0));
+    BOOST_CHECK_THROW(lexical_cast<char>(123), bad_lexical_cast);
+    BOOST_CHECK_EQUAL('1', lexical_cast<char>(1.0));
+    BOOST_CHECK_EQUAL('1', lexical_cast<char>(true));
+    BOOST_CHECK_EQUAL('0', lexical_cast<char>(false));
+    BOOST_CHECK_EQUAL('A', lexical_cast<char>("A"));
+    BOOST_CHECK_EQUAL(' ', lexical_cast<char>(" "));
+    BOOST_CHECK_THROW(lexical_cast<char>(""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<char>("Test"), bad_lexical_cast);
+    BOOST_CHECK_EQUAL('A', lexical_cast<char>(std::string("A")));
+    BOOST_CHECK_EQUAL(' ', lexical_cast<char>(std::string(" ")));
+    BOOST_CHECK_THROW(
+        lexical_cast<char>(std::string("")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<char>(std::string("Test")), bad_lexical_cast);
+}
+
+void test_conversion_to_int()
+{
+    BOOST_CHECK_EQUAL(1, lexical_cast<int>('1'));
+    BOOST_CHECK_EQUAL(0, lexical_cast<int>('0'));
+    BOOST_CHECK_THROW(lexical_cast<int>('A'), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(1, lexical_cast<int>(1));
+    BOOST_CHECK_EQUAL(
+        (std::numeric_limits<int>::max)(),
+        lexical_cast<int>((std::numeric_limits<int>::max)()));
+    BOOST_CHECK_EQUAL(1, lexical_cast<int>(1.0));
+
+    BOOST_CHECK_THROW(lexical_cast<int>(1.23), bad_lexical_cast);
+
+    BOOST_CHECK_THROW(lexical_cast<int>(1e20), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(1, lexical_cast<int>(true));
+    BOOST_CHECK_EQUAL(0, lexical_cast<int>(false));
+    BOOST_CHECK_EQUAL(123, lexical_cast<int>("123"));
+    BOOST_CHECK_THROW(
+        lexical_cast<int>(" 123"), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<int>(""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<int>("Test"), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(123, lexical_cast<int>("123"));
+    BOOST_CHECK_EQUAL(123, lexical_cast<int>(std::string("123")));
+    BOOST_CHECK_THROW(
+        lexical_cast<int>(std::string(" 123")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<int>(std::string("")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<int>(std::string("Test")), bad_lexical_cast);
+}
+
+void test_conversion_to_double()
+{
+    BOOST_CHECK_CLOSE(1.0, lexical_cast<double>('1'), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_THROW(lexical_cast<double>('A'), bad_lexical_cast);
+    BOOST_CHECK_CLOSE(1.0, lexical_cast<double>(1), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_CLOSE(1.23, lexical_cast<double>(1.23), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_CLOSE(1.234567890, 1.234567890, std::numeric_limits<double>::epsilon());
+    BOOST_CHECK_CLOSE(1.0, lexical_cast<double>(true), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_CLOSE(0.0, lexical_cast<double>(false), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_CLOSE(1.23, lexical_cast<double>("1.23"), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_THROW(lexical_cast<double>(""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<double>("Test"), bad_lexical_cast);
+    BOOST_CHECK_CLOSE(1.23, lexical_cast<double>(std::string("1.23")), (std::numeric_limits<double>::epsilon()));
+    BOOST_CHECK_THROW(
+        lexical_cast<double>(std::string("")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<double>(std::string("Test")), bad_lexical_cast);
+}
+
+void test_conversion_to_bool()
+{
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>('1'));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>('0'));
+    BOOST_CHECK_THROW(lexical_cast<bool>('A'), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(1));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(0));
+    BOOST_CHECK_THROW(lexical_cast<bool>(123), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(1.0));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(0.0));
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(true));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(false));
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>("1"));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>("0"));
+    BOOST_CHECK_THROW(lexical_cast<bool>(""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<bool>("Test"), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>("1"));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>("0"));
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(std::string("1")));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(std::string("0")));
+    BOOST_CHECK_THROW(
+        lexical_cast<bool>(std::string("")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<bool>(std::string("Test")), bad_lexical_cast);
+}
+
+void test_conversion_to_string()
+{
+    BOOST_CHECK_EQUAL("A", lexical_cast<std::string>('A'));
+    BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(' '));
+    BOOST_CHECK_EQUAL("123", lexical_cast<std::string>(123));
+    BOOST_CHECK_EQUAL("1.23", lexical_cast<std::string>(1.23));
+    BOOST_CHECK_EQUAL("1.111111111", lexical_cast<std::string>(1.111111111));
+    BOOST_CHECK_EQUAL("1", lexical_cast<std::string>(true));
+    BOOST_CHECK_EQUAL("0", lexical_cast<std::string>(false));
+    BOOST_CHECK_EQUAL("Test", lexical_cast<std::string>("Test"));
+    BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(" "));
+    BOOST_CHECK_EQUAL("", lexical_cast<std::string>(""));
+    BOOST_CHECK_EQUAL("Test", lexical_cast<std::string>(std::string("Test")));
+    BOOST_CHECK_EQUAL(" ", lexical_cast<std::string>(std::string(" ")));
+    BOOST_CHECK_EQUAL("", lexical_cast<std::string>(std::string("")));
+}
+
+void test_conversion_from_to_wchar_t_alias()
+{
+    BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned short>("123"));
+    BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned int>("123"));
+    BOOST_CHECK_EQUAL(123u, lexical_cast<unsigned long>("123"));
+    BOOST_CHECK_EQUAL(std::string("123"),
+        lexical_cast<std::string>(static_cast<unsigned short>(123)));
+    BOOST_CHECK_EQUAL(std::string("123"), lexical_cast<std::string>(123u));
+    BOOST_CHECK_EQUAL(std::string("123"), lexical_cast<std::string>(123ul));
+}
+
+void test_conversion_to_pointer()
+{
+    BOOST_CHECK_THROW(lexical_cast<char *>("Test"), bad_lexical_cast);
+    #ifndef DISABLE_WIDE_CHAR_SUPPORT
+    BOOST_CHECK_THROW(lexical_cast<wchar_t *>("Test"), bad_lexical_cast);
+    #endif
+}
+
+void test_conversion_from_wchar_t()
+{
+#ifndef DISABLE_WIDE_CHAR_SUPPORT
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+    BOOST_CHECK_EQUAL(1, lexical_cast<int>(L'1'));
+    BOOST_CHECK_THROW(lexical_cast<int>(L'A'), bad_lexical_cast);
+#endif
+
+    BOOST_CHECK_EQUAL(123, lexical_cast<int>(L"123"));
+    BOOST_CHECK_THROW(lexical_cast<int>(L""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<int>(L"Test"), bad_lexical_cast);
+
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+    BOOST_CHECK_EQUAL(1.0, lexical_cast<double>(L'1'));
+    BOOST_CHECK_THROW(lexical_cast<double>(L'A'), bad_lexical_cast);
+#endif
+
+    BOOST_CHECK_EQUAL(1.23, lexical_cast<double>(L"1.23"));
+    BOOST_CHECK_THROW(lexical_cast<double>(L""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<double>(L"Test"), bad_lexical_cast);
+
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(L'1'));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(L'0'));
+    BOOST_CHECK_THROW(lexical_cast<bool>(L'A'), bad_lexical_cast);
+#endif
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(L"1"));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(L"0"));
+    BOOST_CHECK_THROW(lexical_cast<bool>(L""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<bool>(L"Test"), bad_lexical_cast);
+#endif
+}
+
+void test_conversion_to_wchar_t()
+{
+#if !defined(DISABLE_WIDE_CHAR_SUPPORT) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+    BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(1));
+    BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(0));
+    BOOST_CHECK_THROW(lexical_cast<wchar_t>(123), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(1.0));
+    BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(0.0));
+    BOOST_CHECK_EQUAL(L'1', lexical_cast<wchar_t>(true));
+    BOOST_CHECK_EQUAL(L'0', lexical_cast<wchar_t>(false));
+    BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(L'A'));
+    BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(L' '));
+    BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(L"A"));
+    BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(L" "));
+    BOOST_CHECK_THROW(lexical_cast<wchar_t>(L""), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<wchar_t>(L"Test"), bad_lexical_cast);
+    BOOST_CHECK_EQUAL(L'A', lexical_cast<wchar_t>(std::wstring(L"A")));
+    BOOST_CHECK_EQUAL(L' ', lexical_cast<wchar_t>(std::wstring(L" ")));
+    BOOST_CHECK_THROW(
+        lexical_cast<wchar_t>(std::wstring(L"")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<wchar_t>(std::wstring(L"Test")), bad_lexical_cast);
+    #endif
+}
+
+void test_conversion_from_wstring()
+{
+    #ifndef DISABLE_WIDE_CHAR_SUPPORT
+    BOOST_CHECK_EQUAL(123, lexical_cast<int>(std::wstring(L"123")));
+    BOOST_CHECK_THROW(
+        lexical_cast<int>(std::wstring(L"")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<int>(std::wstring(L"Test")), bad_lexical_cast);
+
+    BOOST_CHECK_EQUAL(true, lexical_cast<bool>(std::wstring(L"1")));
+    BOOST_CHECK_EQUAL(false, lexical_cast<bool>(std::wstring(L"0")));
+    BOOST_CHECK_THROW(
+        lexical_cast<bool>(std::wstring(L"")), bad_lexical_cast);
+    BOOST_CHECK_THROW(
+        lexical_cast<bool>(std::wstring(L"Test")), bad_lexical_cast);
+    #endif
+}
+
+void test_conversion_to_wstring()
+{
+    #ifndef DISABLE_WIDE_CHAR_SUPPORT
+    BOOST_CHECK(L"123" == lexical_cast<std::wstring>(123));
+    BOOST_CHECK(L"1.23" == lexical_cast<std::wstring>(1.23));
+    BOOST_CHECK(L"1.111111111" == lexical_cast<std::wstring>(1.111111111));
+    BOOST_CHECK(L"1" == lexical_cast<std::wstring>(true));
+    BOOST_CHECK(L"0" == lexical_cast<std::wstring>(false));
+#if !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+    BOOST_CHECK(L"A" == lexical_cast<std::wstring>(L'A'));
+    BOOST_CHECK(L" " == lexical_cast<std::wstring>(L' '));
+#endif
+    BOOST_CHECK(L"Test" == lexical_cast<std::wstring>(L"Test"));
+    BOOST_CHECK(L" " == lexical_cast<std::wstring>(L" "));
+    BOOST_CHECK(L"" == lexical_cast<std::wstring>(L""));
+    BOOST_CHECK(L"Test" == lexical_cast<std::wstring>(std::wstring(L"Test")));
+    BOOST_CHECK(L" " == lexical_cast<std::wstring>(std::wstring(L" ")));
+    BOOST_CHECK(L"" == lexical_cast<std::wstring>(std::wstring(L"")));
+    #endif
+}
+
+void test_bad_lexical_cast()
+{
+    try
+    {
+        lexical_cast<int>(std::string("Test"));
+
+        BOOST_CHECK(false); // Exception expected
+    }
+    catch(const bad_lexical_cast &e)
+    {
+        BOOST_CHECK(e.source_type() == typeid(std::string));
+        BOOST_CHECK(e.target_type() == typeid(int));
+    }
+}
+
+void test_no_whitespace_stripping()
+{
+    BOOST_CHECK_THROW(lexical_cast<int>(" 123"), bad_lexical_cast);
+    BOOST_CHECK_THROW(lexical_cast<int>("123 "), bad_lexical_cast);
+}
@@ -1,16 +0,0 @@
-{
-    "key": "conversion",
-    "name": "Conversion",
-    "authors": [
-        "Dave Abrahams",
-        "Kevlin Henney"
-    ],
-    "description": "Polymorphic casts.",
-    "category": [
-        "Miscellaneous"
-    ],
-    "maintainers": [
-        "Antony Polukhin <antoshkka -at- gmail.com>"
-    ],
-    "cxxstd": "11"
-}
@@ -0,0 +1,100 @@
+//  boost utility cast test program  -----------------------------------------//
+
+//  (C) Copyright Beman Dawes, Dave Abrahams 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
+//   28 Set 04  factored out numeric_cast<> test (Fernando Cacciola)
+//   20 Jan 01  removed use of <limits> for portability to raw GCC (David Abrahams)
+//   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 <cfloat>   // for DBL_MAX (Peter Schmid)
+#include <boost/cast.hpp>
+
+#include "boost/test/minimal.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;
+
+
+int test_main( int argc, char * argv[] )
+{
+
+#   ifdef NDEBUG
+        cout << "NDEBUG is defined\n";
+#   else
+        cout << "NDEBUG is not defined\n";
+#   endif
+
+    cout << "\nBeginning tests...\n";
+
+//  test implicit_cast and numeric_cast  -------------------------------------//
+
+    //  tests which should succeed
+    long small_value = 1;
+    long small_negative_value = -1;
+    long large_value = LONG_MAX;
+    long large_negative_value = LONG_MIN;
+    signed char c = 0;
+
+    c = large_value;  // see if compiler generates warning
+
+    c = numeric_cast<signed char>( small_value );
+    BOOST_CHECK( c == 1 );
+    c = 0;
+    c = numeric_cast<signed char>( small_value );
+    BOOST_CHECK( c == 1 );
+    c = 0;
+    c = numeric_cast<signed char>( small_negative_value );
+    BOOST_CHECK( c == -1 );
+
+    // These tests courtesy of Joe R NWP Swatosh<joe.r.swatosh@usace.army.mil>
+    BOOST_CHECK( 0.0f == numeric_cast<float>( 0.0 ) );
+    BOOST_CHECK( 0.0 == numeric_cast<double>( 0.0 ) );
+
+    //  tests which should result in errors being detected
+
+    bool 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; }
+    BOOST_CHECK ( caught_exception );
+
+    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; }
+    BOOST_CHECK ( caught_exception );
+
+    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; }
+    BOOST_CHECK ( caught_exception );
+
+    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; }
+    BOOST_CHECK ( caught_exception );
+
+    caught_exception = false;
+    try { numeric_cast<int>( DBL_MAX ); }
+    catch (bad_numeric_cast)
+        { cout<<"caught bad_numeric_cast #5\n"; caught_exception = true; }
+    BOOST_CHECK ( caught_exception );
+
+    return 0 ;
+}
@@ -0,0 +1,308 @@
+// what:  simple unit test framework
+// who:   developed by Kevlin Henney
+// when:  November 2000
+// where: tested with BCC 5.5, MSVC 6.0, and g++ 2.91
+//
+// ChangeLog:
+//      20 Jan 2001 - Fixed a warning for MSVC (Dave Abrahams)
+
+#ifndef TEST_INCLUDED
+#define TEST_INCLUDED
+
+#include <exception>
+#include <iostream>
+#include <strstream> // for out-of-the-box g++
+#include <string>
+
+namespace test // test tuple comprises name and nullary function (object)
+{
+    template<typename string_type, typename function_type>
+    struct test
+    {
+        string_type   name;
+        function_type action;
+
+        static test make(string_type name, function_type action)
+        {
+            test result; // MSVC aggreggate initializer bugs
+            result.name   = name;
+            result.action = action;
+            return result;
+        }
+    };
+}
+
+namespace test // failure exception used to indicate checked test failures
+{
+    class failure : public std::exception
+    {
+    public: // struction (default cases are OK)
+
+        failure(const std::string & why)
+          : reason(why)
+        {
+        }
+
+        // std::~string has no exception-specification (could throw anything),
+        // but we need to be compatible with std::~exception's empty one
+        // see std::15.4p13 and std::15.4p3
+        ~failure() throw()
+        {
+        }
+
+    public: // usage
+
+        virtual const char * what() const throw()
+        {
+            return reason.c_str();
+        }
+
+    private: // representation
+
+        std::string reason;
+
+    };
+}
+
+namespace test // not_implemented exception used to mark unimplemented tests
+{
+    class not_implemented : public std::exception
+    {
+    public: // usage (default ctor and dtor are OK)
+
+        virtual const char * what() const throw()
+        {
+            return "not implemented";
+        }
+
+    };
+}
+
+namespace test // test utilities
+{
+    inline void check(bool condition, const std::string & description)
+    {
+        if(!condition)
+        {
+            throw failure(description);
+        }
+    }
+
+    inline void check_true(bool value, const std::string & description)
+    {
+        check(value, "expected true: " + description);
+    }
+
+    inline void check_false(bool value, const std::string & description)
+    {
+        check(!value, "expected false: " + description);
+    }
+
+    template<typename lhs_type, typename rhs_type>
+    void check_equal(
+        const lhs_type & lhs, const rhs_type & rhs,
+        const std::string & description)
+    {
+        check(lhs == rhs, "expected equal values: " + description);
+    }
+
+    template<typename lhs_type, typename rhs_type>
+    void check_unequal(
+        const lhs_type & lhs, const rhs_type & rhs,
+        const std::string & description)
+    {
+        check(lhs != rhs, "expected unequal values: " + description);
+    }
+
+    inline void check_null(const void* ptr, const std::string & description)
+    {
+        check(!ptr, "expected null pointer: " + description);
+    }
+
+    inline void check_non_null(const void* ptr, const std::string & description)
+    {
+        check(ptr != 0, "expected non-null pointer: " + description);
+    }
+}
+
+#define TEST_CHECK_THROW(expression, exception, description) \
+    try \
+    { \
+        expression; \
+        throw ::test::failure(description); \
+    } \
+    catch(exception &) \
+    { \
+    }
+
+namespace test // memory tracking (enabled if test new and delete linked in)
+{
+    class allocations
+    {
+    public: // singleton access
+
+        static allocations & instance()
+        {
+            static allocations singleton;
+            return singleton;
+        }
+
+    public: // logging
+
+        void clear()
+        {
+            alloc_count = dealloc_count = 0;
+        }
+
+        void allocation()
+        {
+            ++alloc_count;
+        }
+
+        void deallocation()
+        {
+            ++dealloc_count;
+        }
+
+    public: // reporting
+
+        unsigned long allocated() const
+        {
+            return alloc_count;
+        }
+
+        unsigned long deallocated() const
+        {
+            return dealloc_count;
+        }
+
+        bool balanced() const
+        {
+            return alloc_count == dealloc_count;
+        }
+
+    private: // structors (default dtor is fine)
+    
+        allocations()
+          : alloc_count(0), dealloc_count(0)
+        {
+        }
+
+    private: // prevention
+
+        allocations(const allocations &);
+        allocations & operator=(const allocations &);
+
+    private: // state
+
+        unsigned long alloc_count, dealloc_count;
+
+    };
+}
+
+namespace test // tester is the driver class for a sequence of tests
+{
+    template<typename test_iterator>
+    class tester
+    {
+    public: // structors (default destructor is OK)
+
+        tester(test_iterator first_test, test_iterator after_last_test)
+          : begin(first_test), end(after_last_test)
+        {
+        }
+
+    public: // usage
+
+        bool operator()(); // returns true if all tests passed
+
+    private: // representation
+
+        test_iterator begin, end;
+
+    private: // prevention
+
+        tester(const tester &);
+        tester &operator=(const tester &);
+
+    };
+
+    template<typename test_iterator>
+    bool tester<test_iterator>::operator()()
+    {
+        using namespace std;
+
+        unsigned long passed = 0, failed = 0, unimplemented = 0;
+
+        for(test_iterator current = begin; current != end; ++current)
+        {
+            cerr << "[" << current->name << "] " << flush;
+            string result = "passed"; // optimistic
+
+            try
+            {
+                allocations::instance().clear();
+                current->action();
+
+                if(!allocations::instance().balanced())
+                {
+                    unsigned long allocated   = allocations::instance().allocated();
+                    unsigned long deallocated = allocations::instance().deallocated();
+                    ostrstream report;
+                    report << "new/delete ("
+                           << allocated << " allocated, "
+                           << deallocated << " deallocated)"
+                           << ends;
+                    const char * text = report.str();
+                    report.freeze(false);
+                    throw failure(text);
+                }
+
+                ++passed;
+            }
+            catch(const failure & caught)
+            {
+                (result = "failed: ") += caught.what();
+                ++failed;
+            }
+            catch(const not_implemented &)
+            {
+                result = "not implemented";
+                ++unimplemented;
+            }
+            catch(const exception & caught)
+            {
+                (result = "exception: ") += caught.what();
+                ++failed;
+            }
+            catch(...)
+            {
+                result = "failed with unknown exception";
+                ++failed;
+            }
+
+            cerr << result << endl;
+        }
+
+        cerr << passed + failed << " tests: "
+             << passed << " passed, "
+             << failed << " failed";
+
+        if(unimplemented)
+        {
+            cerr << " (" << unimplemented << " not implemented)";
+        }
+
+        cerr << endl;
+
+        return failed == 0;
+    }
+}
+
+#endif
+
+// Copyright Kevlin Henney, 2000. All rights reserved.
+//
+// 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)
@@ -1,17 +0,0 @@
-# Copyright  (c) 2016-2026 Antony Polukhin
-# 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(BoostTest OPTIONAL RESULT_VARIABLE HAVE_BOOST_TEST)
-
-if(NOT HAVE_BOOST_TEST)
-  return()
-endif()
-
-set(BOOST_TEST_LINK_LIBRARIES Boost::conversion Boost::core)
-
-boost_test(TYPE run SOURCES cast_test.cpp)
-boost_test(TYPE run SOURCES implicit_cast.cpp)
-boost_test(TYPE compile-fail SOURCES implicit_cast_fail.cpp)
-boost_test(TYPE compile-fail SOURCES implicit_cast_fail2.cpp)
-boost_test(TYPE run SOURCES polymorphic_cast_test.cpp LINK_LIBRARIES Boost::smart_ptr)
@@ -1,31 +1,26 @@
+# Signals library
+
 # Copyright (C) 2001-2003 Douglas Gregor
-# Copyright (C) Antony Polukhin, 2011-2024
-#
-# 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 5.0.1 ;
-import-search /boost/config/checks ;
-import config : requires ;
+# Permission to copy, use, sell and distribute this software is granted 
+# provided this copyright notice appears in all copies. Permission to modify 
+# the code and to distribute modified code is granted provided this copyright 
+# notice appears in all copies, and a notice that the code was modified is 
+# included with the copyright notice. This software is provided "as is" 
+# without express or implied warranty, and with no claim as to its suitability 
+# for any purpose. 
+
+# For more information, see http://www.boost.org/
+
+# bring in rules for testing
 import testing ;
-import feature ;
-
-project
-    : requirements
-        <library>/boost/conversion//boost_conversion
-        [ requires cxx11_decltype ]
-        # default to all warnings on:
-        <warnings>all
-        # set warnings as errors for those compilers we know we get warning free:
-        <toolset>gcc:<cxxflags>-Wextra
-        <toolset>gcc:<cxxflags>-Wno-uninitialized
-    ;

 test-suite conversion
  : [ run implicit_cast.cpp ]
    [ compile-fail implicit_cast_fail.cpp ]
-    [ run cast_test.cpp ]
-    [ run polymorphic_cast_test.cpp : : : <library>/boost/smart_ptr//boost_smart_ptr ]
-    [ compile-fail implicit_cast_fail2.cpp ]
+    [ run ../cast_test.cpp ]
+    [ run ../numeric_cast_test.cpp ]    
+    [ run ../lexical_cast_test.cpp ../../test/build//boost_unit_test_framework/<link>static ]
  ;
+
+      
@@ -1,87 +0,0 @@
-# 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)
-#
-# Copyright Antony Polukhin, 2016-2025.
-
-#
-# See https://svn.boost.org/trac/boost/wiki/TravisCoverals for description of this file
-# and how it can be used with Boost libraries.
-#
-# File revision #6
-
-init:
-    # boost-local/libs/ folder to put this library into. This may be useful, if you're for example running Travis
-    # from `Boost.DLL` repo while Boost already has `dll` and with to replace `dll` with content of`Boost.DLL`.
-    #
-    # Otherwise just leave the default value - set BOOST_LIBS_FOLDER=%APPVEYOR_PROJECT_NAME%
-    - set BOOST_LIBS_FOLDER=%APPVEYOR_PROJECT_NAME%
-
-###############################################################################################################
-# From this point and below code is same for all the Boost libs
-###############################################################################################################
-
-version: 1.84.{build}-{branch}
- 
-# branches to build
-branches:
-  except:
-    - gh-pages
-
-skip_tags: true
-
-environment:
-  matrix:
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      TOOLSET: msvc-14.1,clang-win
-      CXXSTD: 14,17
-      ADDRMD: 32,64
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      ADDPATH: C:\cygwin\bin;
-      TOOLSET: gcc
-      CXXSTD: 03,11,14,1z
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      ADDPATH: C:\cygwin64\bin;
-      TOOLSET: gcc
-      CXXSTD: 03,11,14,1z
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      ADDPATH: C:\mingw\bin;
-      TOOLSET: gcc
-      CXXSTD: 03,11,14,1z
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      ADDPATH: C:\mingw-w64\x86_64-7.2.0-posix-seh-rt_v5-rev1\mingw64\bin;
-      TOOLSET: gcc
-      CXXSTD: 03,11,14,1z
-
-before_build:
-    - set BOOST_BRANCH=develop
-    - if "%APPVEYOR_REPO_BRANCH%" == "master" set BOOST_BRANCH=master
-    - echo "Testing %APPVEYOR_PROJECT_NAME%"
-    # Cloning Boost libraries (fast nondeep cloning)
-    - set BOOST=C:/boost-local
-    - git clone -b %BOOST_BRANCH% --depth 10 https://github.com/boostorg/boost.git %BOOST%
-    - cd %BOOST%
-    - git submodule update --init --depth 10 tools/build tools/boostdep
-
-    - rm -rf %BOOST%/libs/%BOOST_LIBS_FOLDER%
-    - mv -f %APPVEYOR_BUILD_FOLDER% %BOOST%/libs/%BOOST_LIBS_FOLDER%
-    - python tools/boostdep/depinst/depinst.py --git_args "--depth 10 --jobs 2" %BOOST_LIBS_FOLDER%
-
-build_script:
-    - cmd /c bootstrap
-    - b2.exe headers
-    - cd %BOOST%/libs/%BOOST_LIBS_FOLDER%/test
-
-after_build:
-before_test:
-test_script:
-  - PATH=%ADDPATH%%PATH%
-  - if not "%CXXSTD%" == "" set CXXSTD=cxxstd=%CXXSTD%
-  - if not "%ADDRMD%" == "" set ADDRMD=address-model=%ADDRMD%
-  - echo "Running command ..\..\..\b2 -j3 toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release"
-  - ..\..\..\b2.exe -j3 toolset=%TOOLSET% %CXXSTD% %ADDRMD% variant=debug,release cxxflags="-DBOOST_TRAVISCI_BUILD"
-
-after_test:
-on_success:
-on_failure:
-on_finish:
@@ -4,9 +4,8 @@
 // http://www.boost.org/LICENSE_1_0.txt)

 #include <boost/implicit_cast.hpp>
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>
 #include <boost/type.hpp>
-
 using boost::implicit_cast;
 using boost::type;

@@ -19,8 +18,8 @@ struct foo
    operator long() const { return 0; }
 };

-using long_type = type<long>;
-using foo_type = type<foo>;
+typedef type<long> long_type;
+typedef type<foo> foo_type;

 int main()
 {
@@ -29,15 +28,5 @@ int main()

    type<foo> f = check_return(boost::implicit_cast<foo>("hello"));
    type<long> z = check_return(boost::implicit_cast<long>(foo("hello")));
-
-    // warning suppression:
-    (void)x;
-    (void)f;
-    (void)z;
-
-
-    constexpr long value = boost::implicit_cast<long>(42);
-    BOOST_TEST(value == 42L);
-
    return boost::report_errors();
 }
@@ -4,6 +4,10 @@
 // http://www.boost.org/LICENSE_1_0.txt)

 #include <boost/implicit_cast.hpp>
+#include <boost/type.hpp>
+
+#define BOOST_INCLUDE_MAIN
+#include <boost/test/test_tools.hpp>

 using boost::implicit_cast;

@@ -12,9 +16,7 @@ struct foo
    explicit foo(char const*) {}
 };

-int main()
+int test_main(int, char*[])
 {
    foo x = implicit_cast<foo>("foobar");
-    (void)x;            // warning suppression.
-    return 0;
 }
@@ -1,19 +0,0 @@
-//
-// Test that implicit_cast requires a template argument
-//
-// Copyright 2014 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
-//
-
-#include <boost/implicit_cast.hpp>
-
-int main()
-{
-    int x = boost::implicit_cast( 1 );
-    (void)x;
-
-    return 0;
-}
@@ -1,383 +0,0 @@
-//
-// Test boost::polymorphic_cast, boost::polymorphic_downcast and 
-// boost::polymorphic_pointer_cast, boost::polymorphic_pointer_downcast
-//
-// Copyright 1999 Beman Dawes
-// Copyright 1999 Dave Abrahams
-// Copyright 2014 Peter Dimov
-// Copyright 2014 Boris Rasin, Antony Polukhin
-// Copyright 2023 Antony Polukhin
-//
-// 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
-//
-
-#define BOOST_ENABLE_ASSERT_HANDLER
-#include <boost/polymorphic_cast.hpp>
-#include <boost/polymorphic_pointer_cast.hpp>
-#include <boost/smart_ptr/shared_ptr.hpp>
-#include <boost/smart_ptr/intrusive_ptr.hpp>
-#include <boost/smart_ptr/intrusive_ref_counter.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <string>
-#include <memory>
-
-static bool expect_assertion = false;
-static int assertion_failed_count = 0;
-
-//assertion handler throws it to exit like assert, but to be able to catch it and stop
-//usage: BOOST_TEST_THROWS( function_with_assert(), expected_assertion );
-struct expected_assertion {};
-
-// BOOST_ASSERT custom handler
-void boost::assertion_failed( char const * expr, char const * function, char const * file, long line )
-{
-    if( expect_assertion )
-    {
-        ++assertion_failed_count;
-        throw expected_assertion();
-    }
-    else
-    {
-        BOOST_ERROR( "unexpected assertion" );
-
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-          << file << "(" << line << "): assertion '" << expr << "' failed in function '"
-          << function << "'" << std::endl;
-    }
-}
-
-//
-
-struct Base : boost::intrusive_ref_counter<Base>
-{
-    virtual ~Base() {}
-    virtual std::string kind() { return "Base"; }
-};
-
-struct Base2
-{
-    virtual ~Base2() {}
-    virtual std::string kind2() { return "Base2"; }
-};
-
-struct Derived : public Base, Base2
-{
-    virtual std::string kind() { return "Derived"; }
-};
-
-static void test_polymorphic_cast()
-{
-    Base * base = new Derived;
-
-    Derived * derived;
-    
-    try
-    {
-        derived = boost::polymorphic_cast<Derived*>( base );
-
-        BOOST_TEST( derived != 0 );
-
-        if( derived != 0 )
-        {
-            BOOST_TEST_EQ( derived->kind(), "Derived" );
-        }
-    }
-    catch( std::bad_cast const& )
-    {
-        BOOST_ERROR( "boost::polymorphic_cast<Derived*>( base ) threw std::bad_cast" );
-    }
-
-    Base2 * base2;
-
-    try
-    {
-        base2 = boost::polymorphic_cast<Base2*>( base ); // crosscast
-
-        BOOST_TEST( base2 != 0 );
-
-        if( base2 != 0 )
-        {
-            BOOST_TEST_EQ( base2->kind2(), "Base2" );
-        }
-    }
-    catch( std::bad_cast const& )
-    {
-        BOOST_ERROR( "boost::polymorphic_cast<Base2*>( base ) threw std::bad_cast" );
-    }
-
-    delete base;
-}
-
-static void test_polymorphic_pointer_cast()
-{
-    Base * base = new Derived;
-
-    Derived * derived;
-
-    try
-    {
-        derived = boost::polymorphic_pointer_cast<Derived>( base );
-
-        BOOST_TEST( derived != 0 );
-
-        if( derived != 0 )
-        {
-            BOOST_TEST_EQ( derived->kind(), "Derived" );
-        }
-    }
-    catch( std::bad_cast const& )
-    {
-        BOOST_ERROR( "boost::polymorphic_pointer_cast<Derived>( base ) threw std::bad_cast" );
-    }
-
-    Base2 * base2;
-
-    try
-    {
-        base2 = boost::polymorphic_pointer_cast<Base2>( base ); // crosscast
-
-        BOOST_TEST( base2 != 0 );
-
-        if( base2 != 0 )
-        {
-            BOOST_TEST_EQ( base2->kind2(), "Base2" );
-        }
-    }
-    catch( std::bad_cast const& )
-    {
-        BOOST_ERROR( "boost::polymorphic_pointer_cast<Base2>( base ) threw std::bad_cast" );
-    }
-
-    boost::shared_ptr<Base> sp_base( base );
-    boost::shared_ptr<Base2> sp_base2;
-    try
-    {
-        sp_base2 = boost::polymorphic_pointer_cast<Base2>( sp_base ); // crosscast
-
-        BOOST_TEST( sp_base2 != 0 );
-
-        if( sp_base2 != 0 )
-        {
-            BOOST_TEST_EQ( sp_base2->kind2(), "Base2" );
-        }
-    }
-    catch( std::bad_cast const& )
-    {
-        BOOST_ERROR( "boost::polymorphic_pointer_cast<Base2>( sp_base ) threw std::bad_cast" );
-    }
-
-    // we do not `delete base;` because sahred_ptr is holding base
-}
-
-static void test_polymorphic_downcast()
-{
-    Base *base_pointer = new Derived;
-
-    // test raw pointer cast
-    Derived *derived_pointer = boost::polymorphic_downcast<Derived *>(base_pointer);
-
-    BOOST_TEST(derived_pointer != 0);
-
-    if (derived_pointer != 0)
-    {
-        BOOST_TEST_EQ(derived_pointer->kind(), "Derived");
-    }
-
-    // test reference cast
-    Derived& derived_ref = boost::polymorphic_downcast<Derived&>(*base_pointer);
-    BOOST_TEST_EQ(derived_ref.kind(), "Derived");
-
-    delete base_pointer;
-}
-
-static void test_polymorphic_pointer_downcast_builtin()
-{
-    Base * base = new Derived;
-
-    Derived * derived = boost::polymorphic_pointer_downcast<Derived>( base );
-
-    BOOST_TEST( derived != 0 );
-
-    if( derived != 0 )
-    {
-        BOOST_TEST_EQ( derived->kind(), "Derived" );
-    }
-
-    // polymorphic_pointer_downcast can't do crosscasts
-
-    delete base;
-}
-
-static void test_polymorphic_pointer_downcast_boost_shared()
-{
-    boost::shared_ptr<Base> base (new Derived);
-
-    boost::shared_ptr<Derived> derived = boost::polymorphic_pointer_downcast<Derived>( base );
-
-    BOOST_TEST( derived != 0 );
-
-    if( derived != 0 )
-    {
-        BOOST_TEST_EQ( derived->kind(), "Derived" );
-    }
-}
-
-static void test_polymorphic_pointer_downcast_intrusive()
-{
-    boost::intrusive_ptr<Base> base (new Derived);
-
-    boost::intrusive_ptr<Derived> derived = boost::polymorphic_pointer_downcast<Derived>( base );
-
-    BOOST_TEST( derived != 0 );
-
-    if( derived != 0 )
-    {
-        BOOST_TEST_EQ( derived->kind(), "Derived" );
-    }
-}
-
-static void test_polymorphic_pointer_downcast_std_shared()
-{
-    std::shared_ptr<Base> base (new Derived);
-
-    std::shared_ptr<Derived> derived = boost::polymorphic_pointer_downcast<Derived>( base );
-
-    BOOST_TEST( derived != 0 );
-
-    if( derived != 0 )
-    {
-        BOOST_TEST_EQ( derived->kind(), "Derived" );
-    }
-}
-
-static void test_polymorphic_cast_fail()
-{
-    Base * base = new Base;
-
-    BOOST_TEST_THROWS( boost::polymorphic_cast<Derived*>( base ), std::bad_cast );
-
-    delete base;
-}
-
-static void test_polymorphic_pointer_cast_fail()
-{
-    Base * base = new Base;
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( base ), std::bad_cast );
-    delete base;
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( boost::shared_ptr<Base>(new Base) ), std::bad_cast );
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( std::shared_ptr<Base>(new Base) ), std::bad_cast );
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_cast<Derived>( boost::intrusive_ptr<Base>(new Base) ), std::bad_cast );
-}
-
-static void test_polymorphic_downcast_fail()
-{
-    Base * base_pointer = new Base;
-
-    {
-        // test raw pointer cast
-
-        int old_count = assertion_failed_count;
-        expect_assertion = true;
-
-        BOOST_TEST_THROWS(boost::polymorphic_downcast<Derived *>(base_pointer), expected_assertion); // should assert
-
-        BOOST_TEST_EQ(assertion_failed_count, old_count + 1);
-        expect_assertion = false;
-    }
-    {
-        // test reference cast
-
-        int old_count = assertion_failed_count;
-        expect_assertion = true;
-
-        BOOST_TEST_THROWS(boost::polymorphic_downcast<Derived &>(*base_pointer), expected_assertion); // should assert
-
-        BOOST_TEST_EQ(assertion_failed_count, old_count + 1);
-        expect_assertion = false;
-    }
-
-    delete base_pointer;
-}
-
-static void test_polymorphic_pointer_downcast_builtin_fail()
-{
-    Base * base = new Base;
-
-    int old_count = assertion_failed_count;
-    expect_assertion = true;
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_downcast<Derived>( base ), expected_assertion ); // should assert
-
-    BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
-    expect_assertion = false;
-
-    delete base;
-}
-
-static void test_polymorphic_pointer_downcast_boost_shared_fail()
-{
-    boost::shared_ptr<Base> base (new Base);
-
-    int old_count = assertion_failed_count;
-    expect_assertion = true;
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_downcast<Derived>( base ), expected_assertion ); // should assert
-
-    BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
-    expect_assertion = false;
-}
-
-
-static void test_polymorphic_pointer_downcast_std_shared_fail()
-{
-    std::shared_ptr<Base> base (new Base);
-
-    int old_count = assertion_failed_count;
-    expect_assertion = true;
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_downcast<Derived>( base ), expected_assertion ); // should assert
-
-    BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
-    expect_assertion = false;
-}
-
-
-static void test_polymorphic_pointer_downcast_intrusive_fail()
-{
-    boost::intrusive_ptr<Base> base (new Base);
-
-    int old_count = assertion_failed_count;
-    expect_assertion = true;
-
-    BOOST_TEST_THROWS( boost::polymorphic_pointer_downcast<Derived>( base ), expected_assertion); // should assert
-
-    BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
-    expect_assertion = false;
-}
-
-int main()
-{
-    test_polymorphic_cast();
-    test_polymorphic_pointer_cast();
-    test_polymorphic_downcast();
-    test_polymorphic_pointer_downcast_builtin();
-    test_polymorphic_pointer_downcast_boost_shared();
-    test_polymorphic_pointer_downcast_intrusive();
-    test_polymorphic_cast_fail();
-    test_polymorphic_pointer_cast_fail();
-    test_polymorphic_downcast_fail();
-    test_polymorphic_pointer_downcast_builtin_fail();
-    test_polymorphic_pointer_downcast_boost_shared_fail();
-    test_polymorphic_pointer_downcast_intrusive_fail();
-
-    test_polymorphic_pointer_downcast_std_shared();
-    test_polymorphic_pointer_downcast_std_shared_fail();
-
-
-    return boost::report_errors();
-}