Release 1.46.0

[SVN r69125]
2026-08-05 04:54:25 +02:00 · 2011-02-21 18:42:22 +00:00
21 changed files with 3200 additions and 265 deletions
@@ -9,29 +9,22 @@
    <meta name="GENERATOR" content="Microsoft FrontPage 4.0">
    <meta name="ProgId" content="FrontPage.Editor.Document">

-    <title>Header boost/polymorphic_cast.hpp Documentation</title>
-    <style>
-       .copyright
-        {
-            color: #666666;
-            font-size: small;
-        }
-    </style>
+    <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/polymorphic_cast.hpp">boost/polymorphic_cast.hpp</a></h1>
+    "../../boost/cast.hpp">boost/cast.hpp</a></h1>

    <h2><a name="Cast Functions">Cast Functions</a></h2>

-    <p>The header <a href="../../boost/polymorphic_cast.hpp">boost/polymorphic_cast.hpp</a> provides <code>
+    <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="test/cast_test.cpp">cast_test.cpp</a> can be used to
+    <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>
@@ -110,7 +103,7 @@ inline Derived polymorphic_downcast(Base* x);
    <h3>polymorphic_downcast example</h3>

    <blockquote>
-<pre>#include &lt;boost/polymorphic_cast.hpp&gt;
+<pre>#include &lt;boost/cast.hpp&gt;
 ...
 class Fruit { public: virtual ~Fruit(){}; ... };
 class Banana : public Fruit { ... };
@@ -138,9 +131,10 @@ void f( Fruit * fruit ) {
                    -->June 23, 2005<!--webbot bot="Timestamp" endspan i-checksum="30348"
                    --></p>

-    <p class="copyright">&copy; Copyright boost.org 1999. 
-    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>)
-    </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>
+</html>
@@ -14,7 +14,13 @@
 //    3 Aug 99  Initial Version

 #include <iostream>
-#include <boost/polymorphic_cast.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;
@@ -1,4 +1,4 @@
-//  boost polymorphic_cast.hpp header file  ----------------------------------------------//
+//  boost cast.hpp header file  ----------------------------------------------//

 //  (C) Copyright Kevlin Henney and Dave Abrahams 1999.
 //  Distributed under the Boost
@@ -8,9 +8,7 @@
 //  See http://www.boost.org/libs/conversion for Documentation.

 //  Revision History
-//  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 verion (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
@@ -42,12 +40,26 @@
 //             place in nested namespace.
 //   3 Aug 99  Initial version

-#ifndef BOOST_POLYMORPHIC_CAST_HPP
-#define BOOST_POLYMORPHIC_CAST_HPP
+#ifndef BOOST_CAST_HPP
+#define BOOST_CAST_HPP

 # include <boost/config.hpp>
 # include <boost/assert.hpp>
 # include <typeinfo>
+# include <boost/type.hpp>
+# include <boost/limits.hpp>
+# include <boost/detail/select_type.hpp>
+
+//  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
 {
@@ -61,7 +73,7 @@ namespace boost
    //  section 15.8 exercise 1, page 425.

    template <class Target, class Source>
-    inline Target polymorphic_cast(Source* x)
+    inline Target polymorphic_cast(Source* x BOOST_EXPLICIT_DEFAULT_TARGET)
    {
        Target tmp = dynamic_cast<Target>(x);
        if ( tmp == 0 ) throw std::bad_cast();
@@ -80,12 +92,16 @@ namespace boost
    //  Contributed by Dave Abrahams

    template <class Target, class Source>
-    inline 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);
    }

+#  undef BOOST_EXPLICIT_DEFAULT_TARGET
+
 } // namespace boost

-#endif  // BOOST_POLYMORPHIC_CAST_HPP
+# include <boost/numeric/conversion/cast.hpp>
+
+#endif  // BOOST_CAST_HPP
@@ -0,0 +1,184 @@
+// Copyright Alexander Nasonov & Paul A. Bristow 2006.
+
+// 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)
+
+#ifndef BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED
+#define BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED
+
+#include <climits>
+#include <ios>
+#include <limits>
+
+#include <boost/config.hpp>
+#include <boost/integer_traits.hpp>
+
+#ifndef BOOST_NO_IS_ABSTRACT
+// Fix for SF:1358600 - lexical_cast & pure virtual functions & VC 8 STL
+#include <boost/mpl/if.hpp>
+#include <boost/type_traits/is_abstract.hpp>
+#endif
+
+#if defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS) || \
+  (defined(BOOST_MSVC) && (BOOST_MSVC<1310))
+
+#define BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+#endif
+
+#ifdef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+#include <boost/assert.hpp>
+#else
+#include <boost/static_assert.hpp>
+#endif
+
+namespace boost { namespace detail {
+
+class lcast_abstract_stub {};
+
+#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+// Calculate an argument to pass to std::ios_base::precision from
+// lexical_cast. See alternative implementation for broken standard
+// libraries in lcast_get_precision below. Keep them in sync, please.
+template<class T>
+struct lcast_precision
+{
+#ifdef BOOST_NO_IS_ABSTRACT
+    typedef std::numeric_limits<T> limits; // No fix for SF:1358600.
+#else
+    typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
+        boost::is_abstract<T>
+      , std::numeric_limits<lcast_abstract_stub>
+      , std::numeric_limits<T>
+      >::type limits;
+#endif
+
+    BOOST_STATIC_CONSTANT(bool, use_default_precision =
+            !limits::is_specialized || limits::is_exact
+        );
+
+    BOOST_STATIC_CONSTANT(bool, is_specialized_bin =
+            !use_default_precision &&
+            limits::radix == 2 && limits::digits > 0
+        );
+
+    BOOST_STATIC_CONSTANT(bool, is_specialized_dec =
+            !use_default_precision &&
+            limits::radix == 10 && limits::digits10 > 0
+        );
+
+    BOOST_STATIC_CONSTANT(std::streamsize, streamsize_max =
+            boost::integer_traits<std::streamsize>::const_max
+        );
+
+    BOOST_STATIC_CONSTANT(unsigned int, precision_dec = limits::digits10 + 1U);
+
+    BOOST_STATIC_ASSERT(!is_specialized_dec ||
+            precision_dec <= streamsize_max + 0UL
+        );
+
+    BOOST_STATIC_CONSTANT(unsigned long, precision_bin =
+            2UL + limits::digits * 30103UL / 100000UL
+        );
+
+    BOOST_STATIC_ASSERT(!is_specialized_bin ||
+            (limits::digits + 0UL < ULONG_MAX / 30103UL &&
+            precision_bin > limits::digits10 + 0UL &&
+            precision_bin <= streamsize_max + 0UL)
+        );
+
+    BOOST_STATIC_CONSTANT(std::streamsize, value =
+            is_specialized_bin ? precision_bin
+                               : is_specialized_dec ? precision_dec : 6
+        );
+};
+#endif
+
+template<class T>
+inline std::streamsize lcast_get_precision(T* = 0)
+{
+#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+    return lcast_precision<T>::value;
+#else // Follow lcast_precision algorithm at run-time:
+
+#ifdef BOOST_NO_IS_ABSTRACT
+    typedef std::numeric_limits<T> limits; // No fix for SF:1358600.
+#else
+    typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_<
+        boost::is_abstract<T>
+      , std::numeric_limits<lcast_abstract_stub>
+      , std::numeric_limits<T>
+      >::type limits;
+#endif
+
+    bool const use_default_precision =
+        !limits::is_specialized || limits::is_exact;
+
+    if(!use_default_precision)
+    { // Includes all built-in floating-point types, float, double ...
+      // and UDT types for which digits (significand bits) is defined (not zero)
+
+        bool const is_specialized_bin =
+            limits::radix == 2 && limits::digits > 0;
+        bool const is_specialized_dec =
+            limits::radix == 10 && limits::digits10 > 0;
+        std::streamsize const streamsize_max =
+            (boost::integer_traits<std::streamsize>::max)();
+
+        if(is_specialized_bin)
+        { // Floating-point types with
+          // limits::digits defined by the specialization.
+
+            unsigned long const digits = limits::digits;
+            unsigned long const precision = 2UL + digits * 30103UL / 100000UL;
+            // unsigned long is selected because it is at least 32-bits
+            // and thus ULONG_MAX / 30103UL is big enough for all types.
+            BOOST_ASSERT(
+                    digits < ULONG_MAX / 30103UL &&
+                    precision > limits::digits10 + 0UL &&
+                    precision <= streamsize_max + 0UL
+                );
+            return precision;
+        }
+        else if(is_specialized_dec)
+        {   // Decimal Floating-point type, most likely a User Defined Type
+            // rather than a real floating-point hardware type.
+            unsigned int const precision = limits::digits10 + 1U;
+            BOOST_ASSERT(precision <= streamsize_max + 0UL);
+            return precision;
+        }
+    }
+
+    // Integral type (for which precision has no effect)
+    // or type T for which limits is NOT specialized,
+    // so assume stream precision remains the default 6 decimal digits.
+    // Warning: if your User-defined Floating-point type T is NOT specialized,
+    // then you may lose accuracy by only using 6 decimal digits.
+    // To avoid this, you need to specialize T with either
+    // radix == 2 and digits == the number of significand bits,
+    // OR
+    // radix = 10 and digits10 == the number of decimal digits.
+
+    return 6;
+#endif
+}
+
+template<class T>
+inline void lcast_set_precision(std::ios_base& stream, T*)
+{
+    stream.precision(lcast_get_precision<T>());
+}
+
+template<class Source, class Target>
+inline void lcast_set_precision(std::ios_base& stream, Source*, Target*)
+{
+    std::streamsize const s = lcast_get_precision(static_cast<Source*>(0));
+    std::streamsize const t = lcast_get_precision(static_cast<Target*>(0));
+    stream.precision(s > t ? s : t);
+}
+
+}}
+
+#endif //  BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED
+
@@ -5,24 +5,17 @@
 #ifndef IMPLICIT_CAST_DWA200356_HPP
 # define IMPLICIT_CAST_DWA200356_HPP

+# include <boost/mpl/identity.hpp>
+
 namespace boost {

-namespace detail {
-
-template<class T> struct icast_identity
-{
-    typedef T type;
-};
-
-} // 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>
-inline T implicit_cast (typename boost::detail::icast_identity<T>::type x) {
+inline T implicit_cast (typename mpl::identity<T>::type x) {
    return x;
 }

@@ -6,13 +6,6 @@
 <meta name="GENERATOR" content="Microsoft FrontPage 5.0">
 <meta name="ProgId" content="FrontPage.Editor.Document">
 <title>Boost Conversion Library</title>
-<style>
-   .copyright
-    {
-        color: #666666;
-        font-size: small;
-    }
-</style>
 </head>

 <body bgcolor="#FFFFFF" text="#000000">
@@ -31,7 +24,7 @@ supplied by several headers:</p>
    and <b>polymorphic_downcast&lt;&gt;</b> to perform safe casting between
  polymorphic types.<br>
  </li>
-  <li>The <a href="../../doc/html/boost_lexical_cast.html">boost/lexical_cast</a> header provides <b>lexical_cast&lt;&gt;</b>
+  <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>
@@ -39,11 +32,7 @@ supplied by several headers:</p>
 <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 class="copyright">
-    Copyright 2001 Beman Dawes.
-    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>)
-</p>
+
 </body>

-</html>
+</html>
@@ -0,0 +1,270 @@
+<!-- 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="#faq">Frequently Asked Questions</a></li>
+			<li>
+				<a href="#references">References</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/html/boost_numericconversion/improved_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>
+					<code>Target</code> is <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="faq">Frequently Asked Questions</h2>
+    <p> Q: Why does <code>lexical_cast&lt;int8_t&gt;("127")</code> throw <code>bad_lexical_cast</code>?
+    <br> A: The type <code>int8_t</code> is a typedef to <code>char</code> or <code>signed char</code>.
+    Lexical conversion to these types is simply reading a byte from source but since the source has
+    more than one byte, the exception is thrown.
+    <p>Please use other integer types such as <code>int</code> or <code>short int</code>. If bounds checking
+    is important, you can also call <a href="../../libs/numeric/conversion/doc/html/boost_numericconversion/improved_numeric_cast__.html">numeric_cast</a>:
+
+<pre><a href="../../libs/numeric/conversion/doc/html/boost_numericconversion/improved_numeric_cast__.html">numeric_cast</a>&lt;int8_t&gt;(lexical_cast&lt;int&gt;("127"));</pre>
+
+    <p> Q: What does <code>lexical_cast&lt;std::string&gt;</code> of an <code>int8_t</code> or <code>uint8_t</code> not do what I expect?
+    <br> A: As above, note that <code>int8_t</code> and <code>uint8_t</code> are actually chars and are formatted as such.  To avoid this, cast to an integer type first:
+
+<pre>lexical_cast&lt;std::string&gt;(static_cast&lt;int&gt;(n));</pre>
+
+    <p> Q: The implementation always resets the <code>ios_base::skipws</code> flag of an underlying stream object. It breaks my <code>operator&gt;&gt;</code> that works only in presence of this flag. Can you remove code that resets the flag?
+    <br> A: May be in a future version. There is no requirement in <a href="#n1973">[N1973]</a> to reset the flag but remember that <a href="#n1973">[N1973]</a> is not yet accepted by the committee. By the way, it's a great opportunity to make your <code>operator&gt;&gt;</code> conform to the standard. Read a good C++ book, study <code>std::sentry</code> and <a href="../../libs/io/doc/ios_state.html">ios_state_saver</a>.
+</ul>
+<h2><a name="references">References</h2>
+<ul type="square">
+    <a name="n1973"></a><li> [N1973] Kevlin Henney, Beman Dawes, Lexical Conversion Library Proposal for TR2,
+      <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1973.html">N1973</a>.
+      <a name="tuning"></a><li> [Tuning] Alexander Nasonov, Fine Tuning for lexical_cast,
+      <a href="http://www.accu.org/var/uploads/journals/overload74.pdf">Overload #74</a>,
+      August 2006.</li>
+</ul>
+<h2><a name="changes">Changes</a></h2>
+<h3>August, October 2006:</h3>
+<ul type="square">
+    <li>Better performance for many combinations of <code>Source</code> and <code>Target</code>
+    types. Refer to <a href="#tuning">[Tuning]</a> for more details.
+  </li>
+</ul>
+<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 +1,783 @@
+//  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Terje Slettebø and Kevlin Henney, 2005.
+//  Copyright Alexander Nasonov, 2006.
+//
+//  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/cstdint.hpp>
+#include <boost/test/unit_test.hpp>
+#include <boost/test/floating_point_comparison.hpp>
+
+#include <string>
+#include <memory>
+
+#if (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)) \
+    && !(defined(BOOST_MSVC) && BOOST_MSVC < 1300)
+#define LCAST_TEST_LONGLONG
+#endif
+
+template<class CharT>
+struct my_traits : std::char_traits<CharT>
+{
+};
+
+template<class CharT>
+struct my_allocator : std::allocator<CharT>
+{
+};
+
+// Test all 65536 values if true:
+bool const lcast_test_small_integral_types_completely = false;
+
+// lcast_integral_test_counter: use when testing all values of an integral
+// types is not possible. Max. portable value is 32767.
+int const lcast_integral_test_counter=1000;
+
+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();
+void test_conversion_from_to_short();
+void test_conversion_from_to_ushort();
+void test_conversion_from_to_int();
+void test_conversion_from_to_uint();
+void test_conversion_from_to_long();
+void test_conversion_from_to_ulong();
+void test_conversion_from_to_intmax_t();
+void test_conversion_from_to_uintmax_t();
+#ifdef LCAST_TEST_LONGLONG
+void test_conversion_from_to_longlong();
+void test_conversion_from_to_ulonglong();
+#endif
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+void test_traits();
+void test_wtraits();
+void test_allocator();
+void test_wallocator();
+#endif
+
+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 BOOST_LCAST_NO_WCHAR_T
+    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));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_short));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_ushort));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_int));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_uint));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_long));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_ulong));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_intmax_t));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_uintmax_t));
+#ifdef LCAST_TEST_LONGLONG
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_longlong));
+    suite->add(BOOST_TEST_CASE(&test_conversion_from_to_ulonglong));
+#endif
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+    suite->add(BOOST_TEST_CASE(&test_traits));
+    suite->add(BOOST_TEST_CASE(&test_wtraits));
+    suite->add(BOOST_TEST_CASE(&test_allocator));
+    suite->add(BOOST_TEST_CASE(&test_wallocator));
+#endif
+
+    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(1, lexical_cast<int>(1.0));
+
+    BOOST_CHECK_EQUAL(
+        (std::numeric_limits<int>::max)(),
+        lexical_cast<int>((std::numeric_limits<int>::max)()));
+
+    BOOST_CHECK_EQUAL(
+        (std::numeric_limits<int>::min)(),
+        lexical_cast<int>((std::numeric_limits<int>::min)()));
+
+    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()
+{
+    char buf[] = "hello";
+    char* str = buf;
+    BOOST_CHECK_EQUAL(str, lexical_cast<std::string>(str));
+    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 BOOST_LCAST_NO_WCHAR_T
+    BOOST_CHECK_THROW(lexical_cast<wchar_t *>("Test"), bad_lexical_cast);
+#endif
+}
+
+void test_conversion_from_wchar_t()
+{
+#ifndef BOOST_LCAST_NO_WCHAR_T
+#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(BOOST_LCAST_NO_WCHAR_T) && !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_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 BOOST_LCAST_NO_WCHAR_T
+    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 BOOST_LCAST_NO_WCHAR_T
+    wchar_t buf[] = L"hello";
+    wchar_t* str = buf;
+    BOOST_CHECK(str == lexical_cast<std::wstring>(str));
+    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' '));
+    BOOST_CHECK(L"A" == lexical_cast<std::wstring>('A'));
+#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);
+}
+
+// Replace "-,999" with "-999".
+template<class CharT>
+std::basic_string<CharT> to_str_gcc_workaround(std::basic_string<CharT> str)
+{
+    std::locale loc;
+    std::numpunct<CharT> const& np = BOOST_USE_FACET(std::numpunct<CharT>, loc);
+    std::ctype<CharT> const& ct = BOOST_USE_FACET(std::ctype<CharT>, loc);
+
+    if(np.grouping().empty())
+        return str;
+
+    CharT prefix[3] = { ct.widen('-'), np.thousands_sep(), CharT() };
+
+    if(str.find(prefix) != 0)
+        return str;
+
+    prefix[1] = CharT();
+    str.replace(0, 2, prefix);
+    return str;
+}
+
+template<class CharT, class T>
+std::basic_string<CharT> to_str(T t)
+{
+    std::basic_ostringstream<CharT> o;
+    o << t;
+    return to_str_gcc_workaround(o.str());
+}
+
+template<class T, class CharT>
+void test_conversion_from_integral_to_char(CharT zero)
+{
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(0)) == zero + 0);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(1)) == zero + 1);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(2)) == zero + 2);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(3)) == zero + 3);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(4)) == zero + 4);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(5)) == zero + 5);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(6)) == zero + 6);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(7)) == zero + 7);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(8)) == zero + 8);
+    BOOST_CHECK(lexical_cast<CharT>(static_cast<T>(9)) == zero + 9);
+
+    BOOST_CHECK_THROW(lexical_cast<CharT>(static_cast<T>(10)), bad_lexical_cast);
+
+    T t = (std::numeric_limits<T>::max)();
+    BOOST_CHECK_THROW(lexical_cast<CharT>(t), bad_lexical_cast);
+}
+
+template<class T>
+void test_conversion_from_integral_to_integral()
+{
+    T t = 0;
+    BOOST_CHECK(lexical_cast<T>(t) == t);
+
+    // Next two variables are used to supress warnings.
+    int st = 32767; unsigned int ut = st;
+    t = st;
+    BOOST_CHECK(lexical_cast<short>(t) == st);
+    BOOST_CHECK(lexical_cast<unsigned short>(t) == ut);
+    BOOST_CHECK(lexical_cast<int>(t) == st);
+    BOOST_CHECK(lexical_cast<unsigned int>(t) == ut);
+    BOOST_CHECK(lexical_cast<long>(t) == st);
+    BOOST_CHECK(lexical_cast<unsigned long>(t) == ut);
+
+    t = (std::numeric_limits<T>::max)();
+    BOOST_CHECK(lexical_cast<T>(t) == t);
+
+    t = (std::numeric_limits<T>::min)();
+    BOOST_CHECK(lexical_cast<T>(t) == t);
+}
+
+template<class T, class CharT>
+void test_conversion_from_integral_to_string(CharT)
+{
+    typedef std::numeric_limits<T> limits;
+    typedef std::basic_string<CharT> string_type;
+
+    T t;
+
+    t = (limits::min)();
+    BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+
+    t = (limits::max)();
+    BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+
+    if(limits::digits <= 16 && lcast_test_small_integral_types_completely)
+        // min and max have already been tested.
+        for(t = 1 + (limits::min)(); t != (limits::max)(); ++t)
+            BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+    else
+    {
+        T const min_val = (limits::min)();
+        T const max_val = (limits::max)();
+        T const half_max_val = max_val / 2;
+        T const cnt = lcast_integral_test_counter; // to supress warnings
+        unsigned int const counter = cnt < half_max_val ? cnt : half_max_val;
+
+        unsigned int i;
+
+        // Test values around min:
+        t = min_val;
+        for(i = 0; i < counter; ++i, ++t)
+            BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+
+        // Test values around max:
+        t = max_val;
+        for(i = 0; i < counter; ++i, --t)
+            BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+
+        // Test values around zero:
+        if(limits::is_signed)
+            for(t = -counter; t < static_cast<T>(counter); ++t)
+                BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+
+        // Test values around 100, 1000, 10000, ...
+        T ten_power = 100;
+        for(int e = 2; e <= limits::digits10; ++e, ten_power *= 10)
+        {
+            // ten_power + 100 probably never overflows
+            for(t = ten_power - 100; t != ten_power + 100; ++t)
+                BOOST_CHECK(lexical_cast<string_type>(t) == to_str<CharT>(t));
+        }
+    }
+}
+
+template<class T, class CharT>
+void test_conversion_from_string_to_integral(CharT)
+{
+    typedef std::numeric_limits<T> limits;
+    typedef std::basic_string<CharT> string_type;
+
+    string_type s;
+    string_type const zero = to_str<CharT>(0);
+    string_type const nine = to_str<CharT>(9);
+    T const min_val = (limits::min)();
+    T const max_val = (limits::max)();
+
+    s = to_str<CharT>(min_val);
+    BOOST_CHECK_EQUAL(lexical_cast<T>(s), min_val);
+    if(limits::is_signed)
+    {
+#if defined(BOOST_MSVC) && BOOST_MSVC == 1400
+        // VC++ 8.0 bug, see libs/conversion/test/lexical_cast_vc8_bug_test.cpp
+        if(sizeof(T) < sizeof(boost::intmax_t))
+#endif
+        {
+            BOOST_CHECK_THROW(lexical_cast<T>(s + zero), bad_lexical_cast);
+            BOOST_CHECK_THROW(lexical_cast<T>(s + nine), bad_lexical_cast);
+        }
+    }
+
+    s = to_str<CharT>(max_val);
+    BOOST_CHECK_EQUAL(lexical_cast<T>(s), max_val);
+#if defined(BOOST_MSVC) && BOOST_MSVC == 1400
+    // VC++ 8.0 bug, see libs/conversion/test/lexical_cast_vc8_bug_test.cpp
+    if(sizeof(T) != sizeof(boost::intmax_t))
+#endif
+    {
+        BOOST_CHECK_THROW(lexical_cast<T>(s + zero), bad_lexical_cast);
+        BOOST_CHECK_THROW(lexical_cast<T>(s + nine), bad_lexical_cast);
+    }
+
+    if(limits::digits <= 16 && lcast_test_small_integral_types_completely)
+        // min and max have already been tested.
+        for(T t = 1 + min_val; t != max_val; ++t)
+            BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
+    else
+    {
+        T const half_max_val = max_val / 2;
+        T const cnt = lcast_integral_test_counter; // to supress warnings
+        unsigned int const counter = cnt < half_max_val ? cnt : half_max_val;
+
+        T t;
+        unsigned int i;
+
+        // Test values around min:
+        t = min_val;
+        for(i = 0; i < counter; ++i, ++t)
+            BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
+
+        // Test values around max:
+        t = max_val;
+        for(i = 0; i < counter; ++i, --t)
+            BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
+
+        // Test values around zero:
+        if(limits::is_signed)
+            for(t = -counter; t < static_cast<T>(counter); ++t)
+                BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
+
+        // Test values around 100, 1000, 10000, ...
+        T ten_power = 100;
+        for(int e = 2; e <= limits::digits10; ++e, ten_power *= 10)
+        {
+            // ten_power + 100 probably never overflows
+            for(t = ten_power - 100; t != ten_power + 100; ++t)
+                BOOST_CHECK(lexical_cast<T>(to_str<CharT>(t)) == t);
+        }
+    }
+}
+
+template<class T>
+void test_conversion_from_to_integral_for_locale()
+{
+    test_conversion_from_integral_to_integral<T>();
+    test_conversion_from_integral_to_string<T>('0');
+    test_conversion_from_string_to_integral<T>('0');
+#if !defined(BOOST_LCAST_NO_WCHAR_T)
+    test_conversion_from_integral_to_string<T>(L'0');
+    test_conversion_from_string_to_integral<T>(L'0');
+#endif
+}
+
+struct restore_oldloc
+{
+    std::locale oldloc;
+    ~restore_oldloc() { std::locale::global(oldloc); }
+};
+
+template<class T>
+void test_conversion_from_to_integral()
+{
+    char const zero = '0';
+    signed char const szero = '0';
+    unsigned char const uzero = '0';
+    test_conversion_from_integral_to_char<T>(zero);
+    test_conversion_from_integral_to_char<T>(szero);
+    test_conversion_from_integral_to_char<T>(uzero);
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+    wchar_t const wzero = L'0';
+    test_conversion_from_integral_to_char<T>(wzero);
+#endif
+
+    // test_conversion_from_to_integral_for_locale
+
+    typedef std::numpunct<char> numpunct;
+
+    restore_oldloc guard;
+    std::locale const& oldloc = guard.oldloc;
+
+    std::string grouping1 = BOOST_USE_FACET(numpunct, oldloc).grouping();
+    std::string grouping2(grouping1);
+
+    test_conversion_from_to_integral_for_locale<T>();
+
+    try
+    {
+        std::locale newloc("");
+        std::locale::global(newloc);
+
+        grouping2 = BOOST_USE_FACET(numpunct, newloc).grouping();
+    }
+    catch(std::exception const& ex)
+    {
+        std::string msg("Failed to set system locale: ");
+        msg += ex.what();
+        BOOST_TEST_MESSAGE(msg);
+    }
+
+    if(grouping1 != grouping2)
+        test_conversion_from_to_integral_for_locale<T>();
+
+    if(grouping1.empty() && grouping2.empty())
+        BOOST_TEST_MESSAGE("Formatting with thousands_sep has not been tested");
+}
+
+void test_conversion_from_to_short()
+{
+    test_conversion_from_to_integral<short>();
+}
+
+void test_conversion_from_to_ushort()
+{
+    test_conversion_from_to_integral<unsigned short>();
+}
+
+void test_conversion_from_to_int()
+{
+    test_conversion_from_to_integral<int>();
+}
+
+void test_conversion_from_to_uint()
+{
+    test_conversion_from_to_integral<unsigned int>();
+}
+
+void test_conversion_from_to_long()
+{
+    test_conversion_from_to_integral<long>();
+}
+
+void test_conversion_from_to_ulong()
+{
+    test_conversion_from_to_integral<unsigned long>();
+}
+
+void test_conversion_from_to_intmax_t()
+{
+    test_conversion_from_to_integral<boost::intmax_t>();
+}
+
+void test_conversion_from_to_uintmax_t()
+{
+    test_conversion_from_to_integral<boost::uintmax_t>();
+}
+
+#if defined(BOOST_HAS_LONG_LONG)
+
+void test_conversion_from_to_longlong()
+{
+    test_conversion_from_to_integral<boost::long_long_type>();
+}
+
+void test_conversion_from_to_ulonglong()
+{
+    test_conversion_from_to_integral<boost::ulong_long_type>();
+}
+
+#elif defined(LCAST_TEST_LONGLONG)
+
+void test_conversion_from_to_longlong()
+{
+    test_conversion_from_to_integral<__int64>();
+}
+
+void test_conversion_from_to_ulonglong()
+{
+    test_conversion_from_to_integral<unsigned __int64>();
+}
+
+#endif
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+void test_traits()
+{
+    typedef std::basic_string<char, my_traits<char> > my_string;
+
+    my_string const s("s");
+    BOOST_CHECK(boost::lexical_cast<char>(s) == s[0]);
+    BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
+    BOOST_CHECK(boost::lexical_cast<my_string>(-1) == "-1");
+}
+
+void test_wtraits()
+{
+    typedef std::basic_string<wchar_t, my_traits<wchar_t> > my_string;
+
+    my_string const s(L"s");
+    BOOST_CHECK(boost::lexical_cast<wchar_t>(s) == s[0]);
+    BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
+    //BOOST_CHECK(boost::lexical_cast<my_string>(-1) == L"-1");
+    // Commented out because gcc 3.3 doesn't support this:
+    // basic_ostream<wchar_t, my_traits<wchar_t> > o; o << -1;
+}
+
+void test_allocator()
+{
+    typedef std::basic_string< char
+                             , std::char_traits<char>
+                             , my_allocator<char>
+                             > my_string;
+
+    my_string s("s");
+    BOOST_CHECK(boost::lexical_cast<char>(s) == s[0]);
+    BOOST_CHECK(boost::lexical_cast<std::string>(s) == "s");
+    BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
+    BOOST_CHECK(boost::lexical_cast<my_string>(1) == "1");
+    BOOST_CHECK(boost::lexical_cast<my_string>("s") == s);
+    BOOST_CHECK(boost::lexical_cast<my_string>(std::string("s")) == s);
+}
+
+void test_wallocator()
+{
+    typedef std::basic_string< wchar_t
+                             , std::char_traits<wchar_t>
+                             , my_allocator<wchar_t>
+                             > my_string;
+
+    my_string s(L"s");
+    BOOST_CHECK(boost::lexical_cast<wchar_t>(s) == s[0]);
+    BOOST_CHECK(boost::lexical_cast<std::wstring>(s) == L"s");
+    BOOST_CHECK(boost::lexical_cast<my_string>(s) == s);
+    BOOST_CHECK(boost::lexical_cast<my_string>(1) == L"1");
+    BOOST_CHECK(boost::lexical_cast<my_string>(L"s") == s);
+    BOOST_CHECK(boost::lexical_cast<my_string>(std::wstring(L"s")) == s);
+}
+
+#endif
+
@@ -1,15 +0,0 @@
-{
-    "key": "conversion",
-    "name": "Conversion",
-    "authors": [
-        "Dave Abrahams",
-        "Kevlin Henney"
-    ],
-    "description": "Polymorphic casts.",
-    "category": [
-        "Miscellaneous"
-    ],
-    "maintainers": [
-        "Antony Polukhin <antoshkka -at- gmail.com>"
-    ]
-}
@@ -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)
@@ -1,29 +1,30 @@
+# Signals library
+
 # Copyright (C) 2001-2003 Douglas Gregor
-# Copyright (C) 2011-2014 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)
-#

+# 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
-        <toolset>gcc-4.7:<cxxflags>-ftrapv
-        <toolset>gcc-4.6:<cxxflags>-ftrapv
-        <toolset>clang:<cxxflags>-ftrapv
-        # 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 ]
-    [ 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 ]
+    [ run lexical_cast_loopback_test.cpp ../../test/build//boost_unit_test_framework/<link>static ]
+    [ run lexical_cast_abstract_test.cpp ../../test/build//boost_unit_test_framework/<link>static ]
+    [ run lexical_cast_noncopyable_test.cpp ../../test/build//boost_unit_test_framework/<link>static ]
+    [ run lexical_cast_vc8_bug_test.cpp ../../test/build//boost_unit_test_framework/<link>static ]
  ;
+
+      
@@ -28,11 +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 supression:
-    (void)x;
-    (void)f;
-    (void)z;
-
    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;
-}
@@ -0,0 +1,61 @@
+//  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Sergey Shandar 2005, Alexander Nasonov, 2007.
+//
+//  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
+//
+// Test abstract class. Bug 1358600:
+// http://sf.net/tracker/?func=detail&aid=1358600&group_id=7586&atid=107586
+
+#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>
+
+using namespace boost;
+
+void test_abstract();
+
+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_abstract));
+
+    return suite;
+}
+
+class A
+{
+public:
+    virtual void out(std::ostream &) const = 0;
+};
+
+class B: public A
+{
+public:
+    virtual void out(std::ostream &O) const { O << "B"; }
+};
+
+std::ostream &operator<<(std::ostream &O, const A &a)
+{
+    a.out(O);
+    return O;
+};
+
+void test_abstract()
+{
+    const A &a = B();
+    BOOST_CHECK(boost::lexical_cast<std::string>(a) == "B");
+}
+
@@ -0,0 +1,98 @@
+//  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Alexander Nasonov, 2006.
+//
+//  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
+//
+//  Test round-tripping conversion FPT -> string -> FPT,
+//  where FPT is Floating Point Type.
+
+#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>
+
+using namespace boost;
+
+void test_round_conversion_float();
+void test_round_conversion_double();
+void test_round_conversion_long_double();
+
+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_round_conversion_float));
+    suite->add(BOOST_TEST_CASE(&test_round_conversion_double));
+    suite->add(BOOST_TEST_CASE(&test_round_conversion_long_double));
+
+    return suite;
+}
+
+template<class T>
+void test_round_conversion()
+{
+    T epsilon = std::numeric_limits<T>::epsilon();
+    std::string const epsilon_s = boost::lexical_cast<std::string>(epsilon);
+    BOOST_CHECK(epsilon == lexical_cast<T>(epsilon_s));
+
+    T max_ = (std::numeric_limits<T>::max)();
+    std::string const max_s = boost::lexical_cast<std::string>(max_);
+    BOOST_CHECK(max_ == lexical_cast<T>(max_s));
+
+    T min_ = (std::numeric_limits<T>::min)();
+    std::string const min_s = boost::lexical_cast<std::string>(min_);
+    BOOST_CHECK(min_ == lexical_cast<T>(min_s));
+
+    T max_div137 = max_ / 137;
+    std::string max_div137_s = boost::lexical_cast<std::string>(max_div137);
+    BOOST_CHECK(max_div137 == lexical_cast<T>(max_div137_s));
+
+    T epsilon_mult137 = epsilon * 137;
+    std::string epsilon_mult137_s(lexical_cast<std::string>(epsilon_mult137));
+    BOOST_CHECK(epsilon_mult137 == lexical_cast<T>(epsilon_mult137_s));
+
+}
+
+#if defined(BOOST_MSVC)
+// See bug http://tinyurl.com/vhpvo
+template<class T>
+void test_msvc_magic_values()
+{
+    T magic_msvc = 0.00010000433948393407;
+    std::string magic_msvc_s = boost::lexical_cast<std::string>(magic_msvc);
+    BOOST_CHECK(magic_msvc == lexical_cast<T>(magic_msvc_s));
+}
+#endif
+
+void test_round_conversion_float()
+{
+    test_round_conversion<float>();
+}
+
+void test_round_conversion_double()
+{
+    test_round_conversion<double>();
+#if defined(BOOST_MSVC)
+    test_msvc_magic_values<double>();
+#endif
+}
+
+void test_round_conversion_long_double()
+{
+    test_round_conversion<long double>();
+#if defined(BOOST_MSVC)
+    test_msvc_magic_values<long double>();
+#endif
+}
+
@@ -0,0 +1,54 @@
+//  Unit test for boost::lexical_cast.
+//
+//  See http://www.boost.org for most recent version, including documentation.
+//
+//  Copyright Alexander Nasonov, 2007.
+//
+//  Distributed under the Boost
+//  Software License, Version 1.0. (See accompanying file
+//  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt).
+//
+//  Test that Source can be non-copyable.
+
+#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/noncopyable.hpp>
+#include <boost/test/unit_test.hpp>
+
+using namespace boost;
+
+void test_noncopyable();
+
+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_noncopyable));
+
+    return suite;
+}
+
+class Noncopyable : private boost::noncopyable
+{
+public:
+    Noncopyable() {}
+};
+
+inline std::ostream &operator<<(std::ostream &out, const Noncopyable&)
+{
+    return out << "Noncopyable";
+}
+
+void test_noncopyable()
+{
+    Noncopyable x;
+    BOOST_CHECK(boost::lexical_cast<std::string>(x) == "Noncopyable");
+}
+
@@ -0,0 +1,53 @@
+#include <boost/config.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/cstdint.hpp>
+#include <boost/test/unit_test.hpp>
+
+#include <string>
+
+using namespace boost;
+
+// See also test_conversion_from_string_to_integral(CharT)
+// in libs/conversion/lexical_cast_test.cpp
+template<class T, class CharT>
+void test_too_long_number(CharT zero)
+{
+    typedef std::numeric_limits<T> limits;
+
+    std::basic_string<CharT> s;
+
+    std::basic_ostringstream<CharT> o;
+    o << (limits::max)() << zero;
+    s = o.str();
+    BOOST_CHECK_THROW(lexical_cast<T>(s), bad_lexical_cast);
+    s[s.size()-1] += 9; // '0' -> '9'
+    BOOST_CHECK_THROW(lexical_cast<T>(s), bad_lexical_cast);
+
+    if(limits::is_signed)
+    {
+        std::basic_ostringstream<CharT> o;
+        o << (limits::min)() << zero;
+        s = o.str();
+        BOOST_CHECK_THROW(lexical_cast<T>(s), bad_lexical_cast);
+        s[s.size()-1] += 9; // '0' -> '9'
+        BOOST_CHECK_THROW(lexical_cast<T>(s), bad_lexical_cast);
+    }
+}
+
+void test_vc8_bug()
+{
+    test_too_long_number<boost::intmax_t>('0');
+    test_too_long_number<boost::uintmax_t>('0');
+#if !defined(BOOST_LCAST_NO_WCHAR_T)
+    test_too_long_number<boost::intmax_t>(L'0');
+    test_too_long_number<boost::uintmax_t>(L'0');
+#endif
+}
+
+unit_test::test_suite *init_unit_test_suite(int, char *[])
+{
+    unit_test_framework::test_suite *suite =
+        BOOST_TEST_SUITE("lexical_cast vc8 bug unit test");
+    suite->add(BOOST_TEST_CASE(test_vc8_bug));
+    return suite;
+}
@@ -1,150 +0,0 @@
-//
-// Test boost::polymorphic_cast, boost::polymorphic_downcast
-//
-// Copyright 1999 Beman Dawes
-// Copyright 1999 Dave Abrahams
-// 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
-//
-
-#define BOOST_ENABLE_ASSERT_HANDLER
-#include <boost/polymorphic_cast.hpp>
-#include <boost/core/lightweight_test.hpp>
-#include <string>
-
-static bool expect_assertion = false;
-static int assertion_failed_count = 0;
-
-// 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;
-    }
-    else
-    {
-        BOOST_ERROR( "unexpected assertion" );
-
-        BOOST_LIGHTWEIGHT_TEST_OSTREAM
-          << file << "(" << line << "): assertion '" << expr << "' failed in function '"
-          << function << "'" << std::endl;
-    }
-}
-
-//
-
-struct 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_downcast()
-{
-    Base * base = new Derived;
-
-    Derived * derived = boost::polymorphic_downcast<Derived*>( base );
-
-    BOOST_TEST( derived != 0 );
-
-    if( derived != 0 )
-    {
-        BOOST_TEST_EQ( derived->kind(), "Derived" );
-    }
-
-    // polymorphic_downcast can't do crosscasts
-
-    delete base;
-}
-
-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_downcast_fail()
-{
-    Base * base = new Base;
-
-    int old_count = assertion_failed_count;
-    expect_assertion = true;
-
-    boost::polymorphic_downcast<Derived*>( base ); // should assert
-
-    BOOST_TEST_EQ( assertion_failed_count, old_count + 1 );
-    expect_assertion = false;
-
-    delete base;
-}
-
-int main()
-{
-    test_polymorphic_cast();
-    test_polymorphic_downcast();
-    test_polymorphic_cast_fail();
-    test_polymorphic_downcast_fail();
-
-    return boost::report_errors();
-}