comparison DEPENDENCIES/generic/include/boost/lexical_cast.hpp @ 16:2665513ce2d3

Add boost headers

+#ifndef BOOST_LEXICAL_CAST_INCLUDED
+#define BOOST_LEXICAL_CAST_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+// Boost lexical_cast.hpp header  -------------------------------------------//
+//
+// See http://www.boost.org/libs/conversion for 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 Slettebo,
+//        with additional fixes and suggestions from Gennaro Prota,
+//        Beman Dawes, Dave Abrahams, Daryle Walker, Peter Dimov,
+//        Alexander Nasonov, Antony Polukhin, Justin Viiret, Michael Hofmann,
+//        Cheng Yang, Matthew Bradbury, David W. Birdsall, Pavel Korzh and other Boosters
+// when:  November 2000, March 2003, June 2005, June 2006, March 2011 - 2013
+
+#include <boost/config.hpp>
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_WSTRING)
+#define BOOST_LCAST_NO_WCHAR_T
+#endif
+
+#include <climits>
+#include <cstddef>
+#include <string>
+#include <cstring>
+#include <cstdio>
+#include <typeinfo>
+#include <exception>
+#include <boost/limits.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/throw_exception.hpp>
+#include <boost/type_traits/ice.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/static_assert.hpp>
+#include <boost/detail/lcast_precision.hpp>
+#include <boost/detail/workaround.hpp>
+
+
+#ifndef BOOST_NO_STD_LOCALE
+#   include <locale>
+#else
+#   ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+        // Getting error at this point means, that your STL library is old/lame/misconfigured.
+        // If nothing can be done with STL library, define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE,
+        // but beware: lexical_cast will understand only 'C' locale delimeters and thousands
+        // separators.
+#       error "Unable to use <locale> header. Define BOOST_LEXICAL_CAST_ASSUME_C_LOCALE to force "
+#       error "boost::lexical_cast to use only 'C' locale during conversions."
+#   endif
+#endif
+
+#ifdef BOOST_NO_STRINGSTREAM
+#include <strstream>
+#else
+#include <sstream>
+#endif
+
+#ifdef BOOST_NO_TYPEID
+#define BOOST_LCAST_THROW_BAD_CAST(S, T) throw_exception(bad_lexical_cast())
+#else
+#define BOOST_LCAST_THROW_BAD_CAST(Source, Target) \
+    throw_exception(bad_lexical_cast(typeid(Source), typeid(Target)))
+#endif
+
+namespace boost
+{
+    // exception used to indicate runtime lexical_cast failure
+    class BOOST_SYMBOL_VISIBLE bad_lexical_cast :
+    // workaround MSVC bug with std::bad_cast when _HAS_EXCEPTIONS == 0 
+#if defined(BOOST_MSVC) && defined(_HAS_EXCEPTIONS) && !_HAS_EXCEPTIONS 
+        public std::exception 
+#else 
+        public std::bad_cast 
+#endif 
+
+#if defined(__BORLANDC__) && BOOST_WORKAROUND( __BORLANDC__, < 0x560 )
+        // under bcc32 5.5.1 bad_cast doesn't derive from exception
+        , public std::exception
+#endif
+
+    {
+    public:
+        bad_lexical_cast() BOOST_NOEXCEPT :
+#ifndef BOOST_NO_TYPEID
+          source(&typeid(void)), target(&typeid(void))
+#else
+          source(0), target(0) // this breaks getters
+#endif
+        {
+        }
+
+        bad_lexical_cast(
+            const std::type_info &source_type_arg,
+            const std::type_info &target_type_arg) BOOST_NOEXCEPT :
+            source(&source_type_arg), target(&target_type_arg)
+        {
+        }
+
+        const std::type_info &source_type() const
+        {
+            return *source;
+        }
+        const std::type_info &target_type() const
+        {
+            return *target;
+        }
+
+#ifndef BOOST_NO_CXX11_NOEXCEPT
+        virtual const char *what() const noexcept
+#else
+        virtual const char *what() const throw()
+#endif
+        {
+            return "bad lexical cast: "
+                   "source type value could not be interpreted as target";
+        }
+
+#ifndef BOOST_NO_CXX11_NOEXCEPT
+        virtual ~bad_lexical_cast() BOOST_NOEXCEPT
+#else
+        virtual ~bad_lexical_cast() throw()
+#endif
+        {}
+    private:
+        const std::type_info *source;
+        const std::type_info *target;
+    };
+
+    namespace detail // widest_char
+    {
+        template <typename TargetChar, typename SourceChar>
+        struct widest_char
+        {
+            typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                (sizeof(TargetChar) > sizeof(SourceChar))
+                , TargetChar
+                , SourceChar >::type type;
+        };
+    }
+} // namespace boost
+
+#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) && !defined(__SUNPRO_CC) && !defined(__PGIC__)
+
+#include <cmath>
+#include <istream>
+
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+#include <array>
+#endif
+
+#include <boost/array.hpp>
+#include <boost/numeric/conversion/cast.hpp>
+#include <boost/type_traits/make_unsigned.hpp>
+#include <boost/type_traits/is_signed.hpp>
+#include <boost/type_traits/is_integral.hpp>
+#include <boost/type_traits/is_arithmetic.hpp>
+#include <boost/type_traits/remove_pointer.hpp>
+#include <boost/type_traits/has_left_shift.hpp>
+#include <boost/type_traits/has_right_shift.hpp>
+#include <boost/math/special_functions/sign.hpp>
+#include <boost/math/special_functions/fpclassify.hpp>
+#include <boost/range/iterator_range_core.hpp>
+#include <boost/container/container_fwd.hpp>
+#include <boost/integer.hpp>
+#ifndef BOOST_NO_CWCHAR
+#   include <cwchar>
+#endif
+
+namespace boost {
+
+    namespace detail // is_char_or_wchar<...>
+    {
+        // returns true, if T is one of the character types
+        template < typename T >
+        struct is_char_or_wchar
+        {
+            typedef boost::type_traits::ice_or<
+                    boost::is_same< T, char >::value,
+                    #ifndef BOOST_LCAST_NO_WCHAR_T
+                        boost::is_same< T, wchar_t >::value,
+                    #endif
+                    #ifndef BOOST_NO_CXX11_CHAR16_T
+                        boost::is_same< T, char16_t >::value,
+                    #endif
+                    #ifndef BOOST_NO_CXX11_CHAR32_T
+                        boost::is_same< T, char32_t >::value,
+                    #endif
+                    boost::is_same< T, unsigned char >::value,
+                    boost::is_same< T, signed char >::value
+            > result_type;
+
+            BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+        };
+    }
+
+    namespace detail // normalize_single_byte_char<Char>
+    {
+        // Converts signed/unsigned char to char
+        template < class Char >
+        struct normalize_single_byte_char 
+        {
+            typedef Char type;
+        };
+
+        template <>
+        struct normalize_single_byte_char< signed char >
+        {
+            typedef char type;
+        };
+
+        template <>
+        struct normalize_single_byte_char< unsigned char >
+        {
+            typedef char type;
+        };
+    }
+
+    namespace detail // deduce_character_type_later<T>
+    {
+        // Helper type, meaning that stram character for T must be deduced 
+        // at Stage 2 (See deduce_source_char<T> and deduce_target_char<T>)
+        template < class T > struct deduce_character_type_later {};
+    }
+
+    namespace detail // stream_char_common<T>
+    {
+        // Selectors to choose stream character type (common for Source and Target)
+        // Returns one of char, wchar_t, char16_t, char32_t or deduce_character_type_later<T> types
+        // Executed on Stage 1 (See deduce_source_char<T> and deduce_target_char<T>)
+        template < typename Type >
+        struct stream_char_common: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Type >::value,
+            Type,
+            boost::detail::deduce_character_type_later< Type >
+        > {};
+
+        template < typename Char >
+        struct stream_char_common< Char* >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< Char* >
+        > {};
+
+        template < typename Char >
+        struct stream_char_common< const Char* >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< const Char* >
+        > {};
+
+        template < typename Char >
+        struct stream_char_common< boost::iterator_range< Char* > >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< boost::iterator_range< Char* > >
+        > {};
+    
+        template < typename Char >
+        struct stream_char_common< boost::iterator_range< const Char* > >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< boost::iterator_range< const Char* > >
+        > {};
+
+        template < class Char, class Traits, class Alloc >
+        struct stream_char_common< std::basic_string< Char, Traits, Alloc > >
+        {
+            typedef Char type;
+        };
+
+        template < class Char, class Traits, class Alloc >
+        struct stream_char_common< boost::container::basic_string< Char, Traits, Alloc > >
+        {
+            typedef Char type;
+        };
+
+        template < typename Char, std::size_t N >
+        struct stream_char_common< boost::array< Char, N > >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< boost::array< Char, N > >
+        > {};
+
+        template < typename Char, std::size_t N >
+        struct stream_char_common< boost::array< const Char, N > >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< boost::array< const Char, N > >
+        > {};
+
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+        template < typename Char, std::size_t N >
+        struct stream_char_common< std::array<Char, N > >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< std::array< Char, N > >
+        > {};
+
+        template < typename Char, std::size_t N >
+        struct stream_char_common< std::array< const Char, N > >: public boost::mpl::if_c<
+            boost::detail::is_char_or_wchar< Char >::value,
+            Char,
+            boost::detail::deduce_character_type_later< std::array< const Char, N > >
+        > {};
+#endif
+
+#ifdef BOOST_HAS_INT128
+        template <> struct stream_char_common< boost::int128_type >: public boost::mpl::identity< char > {};
+        template <> struct stream_char_common< boost::uint128_type >: public boost::mpl::identity< char > {};
+#endif
+
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && defined(BOOST_NO_INTRINSIC_WCHAR_T)
+        template <>
+        struct stream_char_common< wchar_t >
+        {
+            typedef char type;
+        };
+#endif
+    }
+
+    namespace detail // deduce_source_char_impl<T>
+    {
+        // If type T is `deduce_character_type_later` type, then tries to deduce
+        // character type using boost::has_left_shift<T> metafunction.
+        // Otherwise supplied type T is a character type, that must be normalized
+        // using normalize_single_byte_char<Char>.
+        // Executed at Stage 2  (See deduce_source_char<T> and deduce_target_char<T>)
+        template < class Char > 
+        struct deduce_source_char_impl
+        { 
+            typedef BOOST_DEDUCED_TYPENAME boost::detail::normalize_single_byte_char< Char >::type type; 
+        };
+        
+        template < class T > 
+        struct deduce_source_char_impl< deduce_character_type_later< T > > 
+        {
+            typedef boost::has_left_shift< std::basic_ostream< char >, T > result_t;
+
+#if defined(BOOST_LCAST_NO_WCHAR_T)
+            BOOST_STATIC_ASSERT_MSG((result_t::value), 
+                "Source type is not std::ostream`able and std::wostream`s are not supported by your STL implementation");
+            typedef char type;
+#else
+            typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                result_t::value, char, wchar_t
+            >::type type;
+
+            BOOST_STATIC_ASSERT_MSG((result_t::value || boost::has_left_shift< std::basic_ostream< type >, T >::value), 
+                "Source type is neither std::ostream`able nor std::wostream`able");
+#endif
+        };
+    }
+
+    namespace detail  // deduce_target_char_impl<T>
+    {
+        // If type T is `deduce_character_type_later` type, then tries to deduce
+        // character type using boost::has_right_shift<T> metafunction.
+        // Otherwise supplied type T is a character type, that must be normalized
+        // using normalize_single_byte_char<Char>.
+        // Executed at Stage 2  (See deduce_source_char<T> and deduce_target_char<T>)
+        template < class Char > 
+        struct deduce_target_char_impl 
+        { 
+            typedef BOOST_DEDUCED_TYPENAME normalize_single_byte_char< Char >::type type; 
+        };
+        
+        template < class T > 
+        struct deduce_target_char_impl< deduce_character_type_later<T> > 
+        { 
+            typedef boost::has_right_shift<std::basic_istream<char>, T > result_t;
+
+#if defined(BOOST_LCAST_NO_WCHAR_T)
+            BOOST_STATIC_ASSERT_MSG((result_t::value), 
+                "Target type is not std::istream`able and std::wistream`s are not supported by your STL implementation");
+            typedef char type;
+#else
+            typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                result_t::value, char, wchar_t
+            >::type type;
+            
+            BOOST_STATIC_ASSERT_MSG((result_t::value || boost::has_right_shift<std::basic_istream<wchar_t>, T >::value), 
+                "Target type is neither std::istream`able nor std::wistream`able");
+#endif
+        };
+    } 
+
+    namespace detail  // deduce_target_char<T> and deduce_source_char<T>
+    {
+        // We deduce stream character types in two stages.
+        //
+        // Stage 1 is common for Target and Source. At Stage 1 we get 
+        // non normalized character type (may contain unsigned/signed char)
+        // or deduce_character_type_later<T> where T is the original type.
+        // Stage 1 is executed by stream_char_common<T>
+        //
+        // At Stage 2 we normalize character types or try to deduce character 
+        // type using metafunctions. 
+        // Stage 2 is executed by deduce_target_char_impl<T> and 
+        // deduce_source_char_impl<T>
+        //
+        // deduce_target_char<T> and deduce_source_char<T> functions combine 
+        // both stages
+
+        template < class T >
+        struct deduce_target_char
+        {
+            typedef BOOST_DEDUCED_TYPENAME stream_char_common< T >::type stage1_type;
+            typedef BOOST_DEDUCED_TYPENAME deduce_target_char_impl< stage1_type >::type stage2_type;
+
+            typedef stage2_type type;
+        };
+
+        template < class T >
+        struct deduce_source_char
+        {
+            typedef BOOST_DEDUCED_TYPENAME stream_char_common< T >::type stage1_type;
+            typedef BOOST_DEDUCED_TYPENAME deduce_source_char_impl< stage1_type >::type stage2_type;
+
+            typedef stage2_type type;
+        };
+    }
+
+    namespace detail // deduce_char_traits template
+    {
+        // We are attempting to get char_traits<> from Source or Tagret
+        // template parameter. Otherwise we'll be using std::char_traits<Char>
+        template < class Char, class Target, class Source >
+        struct deduce_char_traits
+        {
+            typedef std::char_traits< Char > type;
+        };
+
+        template < class Char, class Traits, class Alloc, class Source >
+        struct deduce_char_traits< Char
+                                 , std::basic_string< Char, Traits, Alloc >
+                                 , Source
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template < class Char, class Target, class Traits, class Alloc >
+        struct deduce_char_traits< Char
+                                 , Target
+                                 , std::basic_string< Char, Traits, Alloc >
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template < class Char, class Traits, class Alloc, class Source >
+        struct deduce_char_traits< Char
+                                 , boost::container::basic_string< Char, Traits, Alloc >
+                                 , Source
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template < class Char, class Target, class Traits, class Alloc >
+        struct deduce_char_traits< Char
+                                 , Target
+                                 , boost::container::basic_string< Char, Traits, Alloc >
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template < class Char, class Traits, class Alloc1, class Alloc2 >
+        struct deduce_char_traits< Char
+                                 , std::basic_string< Char, Traits, Alloc1 >
+                                 , std::basic_string< Char, Traits, Alloc2 >
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template<class Char, class Traits, class Alloc1, class Alloc2>
+        struct deduce_char_traits< Char
+                                 , boost::container::basic_string< Char, Traits, Alloc1 >
+                                 , boost::container::basic_string< Char, Traits, Alloc2 >
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template < class Char, class Traits, class Alloc1, class Alloc2 >
+        struct deduce_char_traits< Char
+                                 , boost::container::basic_string< Char, Traits, Alloc1 >
+                                 , std::basic_string< Char, Traits, Alloc2 >
+                                 >
+        {
+            typedef Traits type;
+        };
+
+        template < class Char, class Traits, class Alloc1, class Alloc2 >
+        struct deduce_char_traits< Char
+                                 , std::basic_string< Char, Traits, Alloc1 >
+                                 , boost::container::basic_string< Char, Traits, Alloc2 >
+                                 >
+        {
+            typedef Traits type;
+        };
+    }
+
+    namespace detail // array_to_pointer_decay<T>
+    {
+        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;
+        };
+    }
+
+    namespace detail // is_this_float_conversion_optimized<Float, Char>
+    {
+        // this metafunction evaluates to true, if we have optimized comnversion 
+        // from Float type to Char array. 
+        // Must be in sync with lexical_stream_limited_src<Char, ...>::shl_real_type(...)
+        template <typename Float, typename Char>
+        struct is_this_float_conversion_optimized 
+        {
+            typedef boost::type_traits::ice_and<
+                boost::is_float<Float>::value,
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_SWPRINTF) && !defined(__MINGW32__)
+                boost::type_traits::ice_or<
+                    boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value,
+                    boost::is_same<Char, wchar_t>::value
+                >::value
+#else
+                boost::type_traits::ice_eq<sizeof(Char), sizeof(char) >::value
+#endif
+            > result_type;
+
+            BOOST_STATIC_CONSTANT(bool, value = (result_type::value) );
+        };
+    }
+    
+    namespace detail // lcast_src_length
+    {
+        // Return max. length of string representation of Source;
+        template< class Source // Source type of lexical_cast.
+                >
+        struct lcast_src_length
+        {
+            BOOST_STATIC_CONSTANT(std::size_t, value = 1);
+            // To check coverage, build the test with
+            // bjam --v2 profile optimization=off
+            static void check_coverage() {}
+        };
+
+        // Helper for integral types.
+        // Notes on length calculation:
+        // Max length for 32bit int with grouping "\1" and thousands_sep ',':
+        // "-2,1,4,7,4,8,3,6,4,7"
+        //  ^                    - is_signed
+        //   ^                   - 1 digit not counted by digits10
+        //    ^^^^^^^^^^^^^^^^^^ - digits10 * 2
+        //
+        // Constant is_specialized is used instead of constant 1
+        // to prevent buffer overflow in a rare case when
+        // <boost/limits.hpp> doesn't add missing specialization for
+        // numeric_limits<T> for some integral type T.
+        // When is_specialized is false, the whole expression is 0.
+        template<class Source>
+        struct lcast_src_length_integral
+        {
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+            BOOST_STATIC_CONSTANT(std::size_t, value =
+                  std::numeric_limits<Source>::is_signed +
+                  std::numeric_limits<Source>::is_specialized + /* == 1 */
+                  std::numeric_limits<Source>::digits10 * 2
+              );
+#else
+            BOOST_STATIC_CONSTANT(std::size_t, value = 156);
+            BOOST_STATIC_ASSERT(sizeof(Source) * CHAR_BIT <= 256);
+#endif
+        };
+
+#define BOOST_LCAST_DEF(T)               \
+    template<> struct lcast_src_length<T> \
+        : lcast_src_length_integral<T>           \
+    { static void check_coverage() {} };
+
+        BOOST_LCAST_DEF(short)
+        BOOST_LCAST_DEF(unsigned short)
+        BOOST_LCAST_DEF(int)
+        BOOST_LCAST_DEF(unsigned int)
+        BOOST_LCAST_DEF(long)
+        BOOST_LCAST_DEF(unsigned long)
+#if defined(BOOST_HAS_LONG_LONG)
+        BOOST_LCAST_DEF(boost::ulong_long_type)
+        BOOST_LCAST_DEF(boost::long_long_type )
+#elif defined(BOOST_HAS_MS_INT64)
+        BOOST_LCAST_DEF(unsigned __int64)
+        BOOST_LCAST_DEF(         __int64)
+#endif
+#ifdef BOOST_HAS_INT128
+        BOOST_LCAST_DEF(boost::int128_type)
+        BOOST_LCAST_DEF(boost::uint128_type)
+#endif
+
+#undef BOOST_LCAST_DEF
+
+#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+        // Helper for floating point types.
+        // -1.23456789e-123456
+        // ^                   sign
+        //  ^                  leading digit
+        //   ^                 decimal point 
+        //    ^^^^^^^^         lcast_precision<Source>::value
+        //            ^        "e"
+        //             ^       exponent sign
+        //              ^^^^^^ exponent (assumed 6 or less digits)
+        // sign + leading digit + decimal point + "e" + exponent sign == 5
+        template<class Source>
+        struct lcast_src_length_floating
+        {
+            BOOST_STATIC_ASSERT(
+                    std::numeric_limits<Source>::max_exponent10 <=  999999L &&
+                    std::numeric_limits<Source>::min_exponent10 >= -999999L
+                );
+            BOOST_STATIC_CONSTANT(std::size_t, value =
+                    5 + lcast_precision<Source>::value + 6
+                );
+        };
+
+        template<>
+        struct lcast_src_length<float>
+          : lcast_src_length_floating<float>
+        {
+            static void check_coverage() {}
+        };
+
+        template<>
+        struct lcast_src_length<double>
+          : lcast_src_length_floating<double>
+        {
+            static void check_coverage() {}
+        };
+
+        template<>
+        struct lcast_src_length<long double>
+          : lcast_src_length_floating<long double>
+        {
+            static void check_coverage() {}
+        };
+
+#endif // #ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION
+    }
+
+    namespace detail // lexical_cast_stream_traits<Source, Target>
+    {
+        template <class Source, class Target>
+        struct lexical_cast_stream_traits {
+            typedef BOOST_DEDUCED_TYPENAME boost::detail::array_to_pointer_decay<Source>::type src;
+            typedef BOOST_DEDUCED_TYPENAME boost::remove_cv<src>::type            no_cv_src;
+                
+            typedef boost::detail::deduce_source_char<no_cv_src>                           deduce_src_char_metafunc;
+            typedef BOOST_DEDUCED_TYPENAME deduce_src_char_metafunc::type           src_char_t;
+            typedef BOOST_DEDUCED_TYPENAME boost::detail::deduce_target_char<Target>::type target_char_t;
+                
+            typedef BOOST_DEDUCED_TYPENAME boost::detail::widest_char<
+                target_char_t, src_char_t
+            >::type char_type;
+
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+            BOOST_STATIC_ASSERT_MSG(( !boost::is_same<char16_t, src_char_t>::value
+                                        && !boost::is_same<char16_t, target_char_t>::value),
+                "Your compiler does not have full support for char16_t" );
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+            BOOST_STATIC_ASSERT_MSG(( !boost::is_same<char32_t, src_char_t>::value
+                                        && !boost::is_same<char32_t, target_char_t>::value),
+                "Your compiler does not have full support for char32_t" );
+#endif
+
+            typedef BOOST_DEDUCED_TYPENAME boost::detail::deduce_char_traits<
+                char_type, Target, no_cv_src
+            >::type traits;
+
+            typedef boost::type_traits::ice_and<
+                boost::is_same<char, src_char_t>::value,                                  // source is not a wide character based type
+                boost::type_traits::ice_ne<sizeof(char), sizeof(target_char_t) >::value,  // target type is based on wide character
+                boost::type_traits::ice_not<
+                    boost::detail::is_char_or_wchar<no_cv_src>::value                     // single character widening is optimized
+                >::value                                                                  // and does not requires stringbuffer
+            >   is_string_widening_required_t;
+
+            typedef boost::type_traits::ice_not< boost::type_traits::ice_or<
+                boost::is_integral<no_cv_src>::value,
+                boost::detail::is_this_float_conversion_optimized<no_cv_src, char_type >::value,
+                boost::detail::is_char_or_wchar<
+                    BOOST_DEDUCED_TYPENAME deduce_src_char_metafunc::stage1_type          // if we did not get character type at stage1
+                >::value                                                                  // then we have no optimization for that type
+            >::value >   is_source_input_not_optimized_t;
+
+            // If we have an optimized conversion for
+            // Source, we do not need to construct stringbuf.
+            BOOST_STATIC_CONSTANT(bool, requires_stringbuf = 
+                (boost::type_traits::ice_or<
+                    is_string_widening_required_t::value, is_source_input_not_optimized_t::value
+                >::value)
+            );
+            
+            typedef boost::detail::lcast_src_length<no_cv_src> len_t;
+        };
+    }
+
+    namespace detail // '0', '+' and '-' constants
+    {
+        template < typename Char > struct lcast_char_constants;
+
+        template<>
+        struct lcast_char_constants<char>
+        {
+            BOOST_STATIC_CONSTANT(char, zero  = '0');
+            BOOST_STATIC_CONSTANT(char, minus = '-');
+            BOOST_STATIC_CONSTANT(char, plus = '+');
+            BOOST_STATIC_CONSTANT(char, lowercase_e = 'e');
+            BOOST_STATIC_CONSTANT(char, capital_e = 'E');
+            BOOST_STATIC_CONSTANT(char, c_decimal_separator = '.');
+        };
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+        template<>
+        struct lcast_char_constants<wchar_t>
+        {
+            BOOST_STATIC_CONSTANT(wchar_t, zero  = L'0');
+            BOOST_STATIC_CONSTANT(wchar_t, minus = L'-');
+            BOOST_STATIC_CONSTANT(wchar_t, plus = L'+');
+            BOOST_STATIC_CONSTANT(wchar_t, lowercase_e = L'e');
+            BOOST_STATIC_CONSTANT(wchar_t, capital_e = L'E');
+            BOOST_STATIC_CONSTANT(wchar_t, c_decimal_separator = L'.');
+        };
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+        template<>
+        struct lcast_char_constants<char16_t>
+        {
+            BOOST_STATIC_CONSTANT(char16_t, zero  = u'0');
+            BOOST_STATIC_CONSTANT(char16_t, minus = u'-');
+            BOOST_STATIC_CONSTANT(char16_t, plus = u'+');
+            BOOST_STATIC_CONSTANT(char16_t, lowercase_e = u'e');
+            BOOST_STATIC_CONSTANT(char16_t, capital_e = u'E');
+            BOOST_STATIC_CONSTANT(char16_t, c_decimal_separator = u'.');
+        };
+#endif
+
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+        template<>
+        struct lcast_char_constants<char32_t>
+        {
+            BOOST_STATIC_CONSTANT(char32_t, zero  = U'0');
+            BOOST_STATIC_CONSTANT(char32_t, minus = U'-');
+            BOOST_STATIC_CONSTANT(char32_t, plus = U'+');
+            BOOST_STATIC_CONSTANT(char32_t, lowercase_e = U'e');
+            BOOST_STATIC_CONSTANT(char32_t, capital_e = U'E');
+            BOOST_STATIC_CONSTANT(char32_t, c_decimal_separator = U'.');
+        };
+#endif
+    }
+
+    namespace detail // lcast_to_unsigned
+    {
+        template<class T>
+        inline
+        BOOST_DEDUCED_TYPENAME make_unsigned<T>::type lcast_to_unsigned(T value) BOOST_NOEXCEPT
+        {
+            typedef BOOST_DEDUCED_TYPENAME boost::make_unsigned<T>::type result_type;
+            return static_cast<result_type>(
+                value < 0 ? 0u - static_cast<result_type>(value) : value
+            );
+        }
+    }
+
+    namespace detail // lcast_put_unsigned
+    {
+        template<class Traits, class T, class CharT>
+        CharT* lcast_put_unsigned(const T n_param, CharT* finish)
+        {
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+            BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
+#endif
+
+            typedef typename Traits::int_type int_type;
+            CharT const czero = lcast_char_constants<CharT>::zero;
+            int_type const zero = Traits::to_int_type(czero);
+            BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                    (sizeof(int_type) > sizeof(T))
+                    , int_type
+                    , T
+            >::type n = n_param;
+
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+            std::locale loc;
+            if (loc != std::locale::classic()) {
+                typedef std::numpunct<CharT> numpunct;
+                numpunct const& np = BOOST_USE_FACET(numpunct, loc);
+                std::string const grouping = np.grouping();
+                std::string::size_type const grouping_size = grouping.size();
+
+                if ( grouping_size && grouping[0] > 0 )
+                {
+
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+                // Check that ulimited group is unreachable:
+                BOOST_STATIC_ASSERT(std::numeric_limits<T>::digits10 < CHAR_MAX);
+#endif
+                    CharT thousands_sep = np.thousands_sep();
+                    std::string::size_type group = 0; // current group number
+                    char last_grp_size = grouping[0];
+                    char left = last_grp_size;
+
+                    do
+                    {
+                        if(left == 0)
+                        {
+                            ++group;
+                            if(group < grouping_size)
+                            {
+                                char const grp_size = grouping[group];
+                                last_grp_size = grp_size <= 0 ? static_cast<char>(CHAR_MAX) : grp_size;
+                            }
+
+                            left = last_grp_size;
+                            --finish;
+                            Traits::assign(*finish, thousands_sep);
+                        }
+
+                        --left;
+
+                        --finish;
+                        int_type const digit = static_cast<int_type>(n % 10U);
+                        Traits::assign(*finish, Traits::to_char_type(zero + digit));
+                        n /= 10;
+                    } while(n);
+                    return finish;
+                }
+            }
+#endif
+            {
+                do
+                {
+                    --finish;
+                    int_type const digit = static_cast<int_type>(n % 10U);
+                    Traits::assign(*finish, Traits::to_char_type(zero + digit));
+                    n /= 10;
+                } while(n);
+            }
+
+            return finish;
+        }
+    }
+
+    namespace detail // lcast_ret_unsigned
+    {
+        template<class Traits, class T, class CharT>
+        inline bool lcast_ret_unsigned(T& value, const CharT* const begin, const CharT* end)
+        {
+#ifndef BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS
+            BOOST_STATIC_ASSERT(!std::numeric_limits<T>::is_signed);
+
+            // GCC when used with flag -std=c++0x may not have std::numeric_limits
+            // specializations for __int128 and unsigned __int128 types.
+            // Try compilation with -std=gnu++0x or -std=gnu++11.
+            //
+            // http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40856
+            BOOST_STATIC_ASSERT_MSG(std::numeric_limits<T>::is_specialized,
+                "std::numeric_limits are not specialized for integral type passed to boost::lexical_cast"
+            );
+#endif
+            CharT const czero = lcast_char_constants<CharT>::zero;
+            --end;
+            value = 0;
+
+            if (begin > end || *end < czero || *end >= czero + 10)
+                return false;
+            value = static_cast<T>(*end - czero);
+            --end;
+            T multiplier = 1;
+            bool multiplier_overflowed = false;
+
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+            std::locale loc;
+            if (loc != std::locale::classic()) {
+                typedef std::numpunct<CharT> numpunct;
+                numpunct const& np = BOOST_USE_FACET(numpunct, loc);
+                std::string const& grouping = np.grouping();
+                std::string::size_type const grouping_size = grouping.size();
+
+                /* According to Programming languages - C++
+                 * we MUST check for correct grouping
+                 */
+                if (grouping_size && grouping[0] > 0)
+                {
+                    unsigned char current_grouping = 0;
+                    CharT const thousands_sep = np.thousands_sep();
+                    char remained = static_cast<char>(grouping[current_grouping] - 1);
+                    bool shall_we_return = true;
+
+                    for(;end>=begin; --end)
+                    {
+                        if (remained) {
+                            T const multiplier_10 = static_cast<T>(multiplier * 10);
+                            if (multiplier_10 / 10 != multiplier) multiplier_overflowed = true;
+
+                            T const dig_value = static_cast<T>(*end - czero);
+                            T const new_sub_value = static_cast<T>(multiplier_10 * dig_value);
+
+                            if (*end < czero || *end >= czero + 10
+                                    /* detecting overflow */
+                                    || (dig_value && new_sub_value / dig_value != multiplier_10)
+                                    || static_cast<T>((std::numeric_limits<T>::max)()-new_sub_value) < value
+                                    || (multiplier_overflowed && dig_value)
+                                    )
+                                return false;
+
+                            value = static_cast<T>(value + new_sub_value);
+                            multiplier = static_cast<T>(multiplier * 10);
+                            --remained;
+                        } else {
+                            if ( !Traits::eq(*end, thousands_sep) ) //|| begin == end ) return false;
+                            {
+                                /*
+                                 * According to Programming languages - C++
+                                 * Digit grouping is checked. That is, the positions of discarded
+                                 * separators is examined for consistency with
+                                 * use_facet<numpunct<charT> >(loc ).grouping()
+                                 *
+                                 * BUT what if there is no separators at all and grouping()
+                                 * is not empty? Well, we have no extraced separators, so we
+                                 * won`t check them for consistency. This will allow us to
+                                 * work with "C" locale from other locales
+                                 */
+                                shall_we_return = false;
+                                break;
+                            } else {
+                                if ( begin == end ) return false;
+                                if (current_grouping < grouping_size-1 ) ++current_grouping;
+                                remained = grouping[current_grouping];
+                            }
+                        }
+                    }
+
+                    if (shall_we_return) return true;
+                }
+            }
+#endif
+            {
+                while ( begin <= end )
+                {
+                    T const multiplier_10 = static_cast<T>(multiplier * 10);
+                    if (multiplier_10 / 10 != multiplier) multiplier_overflowed = true;
+
+                    T const dig_value = static_cast<T>(*end - czero);
+                    T const new_sub_value = static_cast<T>(multiplier_10 * dig_value);
+
+                    if (*end < czero || *end >= czero + 10
+                            /* detecting overflow */
+                            || (dig_value && new_sub_value / dig_value != multiplier_10)
+                            || static_cast<T>((std::numeric_limits<T>::max)()-new_sub_value) < value
+                            || (multiplier_overflowed && dig_value)
+                            )
+                        return false;
+
+                    value = static_cast<T>(value + new_sub_value);
+                    multiplier = static_cast<T>(multiplier * 10);
+                    --end;
+                }
+            }
+            return true;
+        }
+    }
+
+    namespace detail
+    {
+        template <class CharT>
+        bool lc_iequal(const CharT* val, const CharT* lcase, const CharT* ucase, unsigned int len) BOOST_NOEXCEPT {
+            for( unsigned int i=0; i < len; ++i ) {
+                if ( val[i] != lcase[i] && val[i] != ucase[i] ) return false;
+            }
+
+            return true;
+        }
+
+        /* Returns true and sets the correct value if found NaN or Inf. */
+        template <class CharT, class T>
+        inline bool parse_inf_nan_impl(const CharT* begin, const CharT* end, T& value
+            , const CharT* lc_NAN, const CharT* lc_nan
+            , const CharT* lc_INFINITY, const CharT* lc_infinity
+            , const CharT opening_brace, const CharT closing_brace) BOOST_NOEXCEPT
+        {
+            using namespace std;
+            if (begin == end) return false;
+            const CharT minus = lcast_char_constants<CharT>::minus;
+            const CharT plus = lcast_char_constants<CharT>::plus;
+            const int inifinity_size = 8;
+
+            bool has_minus = false;
+            /* Parsing +/- */
+            if( *begin == minus)
+            {
+                ++ begin;
+                has_minus = true;
+            }
+            else if( *begin == plus ) ++begin;
+
+            if( end-begin < 3 ) return false;
+            if( lc_iequal(begin, lc_nan, lc_NAN, 3) )
+            {
+                begin += 3;
+                if (end != begin) /* It is 'nan(...)' or some bad input*/
+                {
+                    if(end-begin<2) return false; // bad input
+                    -- end;
+                    if( *begin != opening_brace || *end != closing_brace) return false; // bad input
+                }
+
+                if( !has_minus ) value = std::numeric_limits<T>::quiet_NaN();
+                else value = (boost::math::changesign) (std::numeric_limits<T>::quiet_NaN());
+                return true;
+            } else
+            if (( /* 'INF' or 'inf' */
+                  end-begin==3
+                  &&
+                  lc_iequal(begin, lc_infinity, lc_INFINITY, 3)
+                )
+                ||
+                ( /* 'INFINITY' or 'infinity' */
+                  end-begin==inifinity_size
+                  &&
+                  lc_iequal(begin, lc_infinity, lc_INFINITY, inifinity_size)
+                )
+             )
+            {
+                if( !has_minus ) value = std::numeric_limits<T>::infinity();
+                else value = (boost::math::changesign) (std::numeric_limits<T>::infinity());
+                return true;
+            }
+
+            return false;
+        }
+
+        template <class CharT, class T>
+        bool put_inf_nan_impl(CharT* begin, CharT*& end, const T& value
+                         , const CharT* lc_nan
+                         , const CharT* lc_infinity) BOOST_NOEXCEPT
+        {
+            using namespace std;
+            const CharT minus = lcast_char_constants<CharT>::minus;
+            if ( (boost::math::isnan)(value) )
+            {
+                if ( (boost::math::signbit)(value) )
+                {
+                    *begin = minus;
+                    ++ begin;
+                }
+
+                memcpy(begin, lc_nan, 3 * sizeof(CharT));
+                end = begin + 3;
+                return true;
+            } else if ( (boost::math::isinf)(value) )
+            {
+                if ( (boost::math::signbit)(value) )
+                {
+                    *begin = minus;
+                    ++ begin;
+                }
+
+                memcpy(begin, lc_infinity, 3 * sizeof(CharT));
+                end = begin + 3;
+                return true;
+            }
+
+            return false;
+        }
+
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+        template <class T>
+        bool parse_inf_nan(const wchar_t* begin, const wchar_t* end, T& value) BOOST_NOEXCEPT
+        {
+            return parse_inf_nan_impl(begin, end, value
+                               , L"NAN", L"nan"
+                               , L"INFINITY", L"infinity"
+                               , L'(', L')');
+        }
+
+        template <class T>
+        bool put_inf_nan(wchar_t* begin, wchar_t*& end, const T& value) BOOST_NOEXCEPT
+        {
+            return put_inf_nan_impl(begin, end, value, L"nan", L"infinity");
+        }
+
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+        template <class T>
+        bool parse_inf_nan(const char16_t* begin, const char16_t* end, T& value) BOOST_NOEXCEPT
+        {
+            return parse_inf_nan_impl(begin, end, value
+                               , u"NAN", u"nan"
+                               , u"INFINITY", u"infinity"
+                               , u'(', u')');
+        }
+
+        template <class T>
+        bool put_inf_nan(char16_t* begin, char16_t*& end, const T& value) BOOST_NOEXCEPT
+        {
+            return put_inf_nan_impl(begin, end, value, u"nan", u"infinity");
+        }
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+        template <class T>
+        bool parse_inf_nan(const char32_t* begin, const char32_t* end, T& value) BOOST_NOEXCEPT
+        {
+            return parse_inf_nan_impl(begin, end, value
+                               , U"NAN", U"nan"
+                               , U"INFINITY", U"infinity"
+                               , U'(', U')');
+        }
+
+        template <class T>
+        bool put_inf_nan(char32_t* begin, char32_t*& end, const T& value) BOOST_NOEXCEPT
+        {
+            return put_inf_nan_impl(begin, end, value, U"nan", U"infinity");
+        }
+#endif
+
+        template <class CharT, class T>
+        bool parse_inf_nan(const CharT* begin, const CharT* end, T& value) BOOST_NOEXCEPT
+        {
+            return parse_inf_nan_impl(begin, end, value
+                               , "NAN", "nan"
+                               , "INFINITY", "infinity"
+                               , '(', ')');
+        }
+
+        template <class CharT, class T>
+        bool put_inf_nan(CharT* begin, CharT*& end, const T& value) BOOST_NOEXCEPT
+        {
+            return put_inf_nan_impl(begin, end, value, "nan", "infinity");
+        }
+    }
+
+
+    namespace detail // lcast_ret_float
+    {
+
+// Silence buggy MS warnings like C4244: '+=' : conversion from 'int' to 'unsigned short', possible loss of data 
+#if defined(_MSC_VER) && (_MSC_VER == 1400) 
+#  pragma warning(push) 
+#  pragma warning(disable:4244) 
+#endif 
+        template <class T>
+        struct mantissa_holder_type
+        {
+            /* Can not be used with this type */
+        };
+
+        template <>
+        struct mantissa_holder_type<float>
+        {
+            typedef unsigned int type;
+            typedef double       wide_result_t;
+        };
+
+        template <>
+        struct mantissa_holder_type<double>
+        {
+#ifndef BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS
+            typedef long double  wide_result_t;
+#if defined(BOOST_HAS_LONG_LONG)
+            typedef boost::ulong_long_type type;
+#elif defined(BOOST_HAS_MS_INT64)
+            typedef unsigned __int64 type;
+#endif
+#endif
+        };
+
+        template<class Traits, class T, class CharT>
+        inline bool lcast_ret_float(T& value, const CharT* begin, const CharT* end)
+        {
+
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+            std::locale loc;
+            typedef std::numpunct<CharT> numpunct;
+            numpunct const& np = BOOST_USE_FACET(numpunct, loc);
+            std::string const grouping(
+                    (loc == std::locale::classic())
+                    ? std::string()
+                    : np.grouping()
+            );
+            std::string::size_type const grouping_size = grouping.size();
+            CharT const thousands_sep = static_cast<CharT>(grouping_size ? np.thousands_sep() : 0);
+            CharT const decimal_point = np.decimal_point();
+            bool found_grouping = false;
+            std::string::size_type last_grouping_pos = grouping_size - 1;
+#else
+            CharT const decimal_point = lcast_char_constants<CharT>::c_decimal_separator;
+#endif
+
+            CharT const czero = lcast_char_constants<CharT>::zero;
+            CharT const minus = lcast_char_constants<CharT>::minus;
+            CharT const plus = lcast_char_constants<CharT>::plus;
+            CharT const capital_e = lcast_char_constants<CharT>::capital_e;
+            CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
+
+            value = static_cast<T>(0);
+
+            if (parse_inf_nan(begin, end, value)) return true;
+
+            typedef typename Traits::int_type int_type;
+            typedef BOOST_DEDUCED_TYPENAME mantissa_holder_type<T>::type mantissa_type;
+            typedef BOOST_DEDUCED_TYPENAME mantissa_holder_type<T>::wide_result_t wide_result_t;
+            int_type const zero = Traits::to_int_type(czero);
+            if (begin == end) return false;
+
+            /* Getting the plus/minus sign */
+            bool has_minus = false;
+            if (Traits::eq(*begin, minus) ) {
+                ++ begin;
+                has_minus = true;
+                if (begin == end) return false;
+            } else if (Traits::eq(*begin, plus) ) {
+                ++begin;
+                if (begin == end) return false;
+            }
+
+            bool found_decimal = false;
+            bool found_number_before_exp = false;
+            int pow_of_10 = 0;
+            mantissa_type mantissa=0;
+            bool is_mantissa_full = false;
+
+            char length_since_last_delim = 0;
+
+            while ( begin != end )
+            {
+                if (found_decimal) {
+                    /* We allow no thousand_separators after decimal point */
+
+                    mantissa_type tmp_mantissa = mantissa * 10u;
+                    if (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) break;
+                    if ( *begin < czero || *begin >= czero + 10 ) return false;
+                    if (    is_mantissa_full
+                            || tmp_mantissa / 10u != mantissa
+                            || (std::numeric_limits<mantissa_type>::max)()-(*begin - zero) < tmp_mantissa
+                            ) {
+                        is_mantissa_full = true;
+                        ++ begin;
+                        continue;
+                    }
+
+                    -- pow_of_10;
+                    mantissa = tmp_mantissa;
+                    mantissa += *begin - zero;
+
+                    found_number_before_exp = true;
+                } else {
+
+                    if (*begin >= czero && *begin < czero + 10) {
+
+                        /* Checking for mantissa overflow. If overflow will
+                         * occur, them we only increase multiplyer
+                         */
+                        mantissa_type tmp_mantissa = mantissa * 10u;
+                        if(     !is_mantissa_full
+                                && tmp_mantissa / 10u == mantissa
+                                && (std::numeric_limits<mantissa_type>::max)()-(*begin - zero) >= tmp_mantissa
+                            )
+                        {
+                            mantissa = tmp_mantissa;
+                            mantissa += *begin - zero;
+                        } else
+                        {
+                            is_mantissa_full = true;
+                            ++ pow_of_10;
+                        }
+
+                        found_number_before_exp = true;
+                        ++ length_since_last_delim;
+                    } else if (Traits::eq(*begin, decimal_point) || Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) {
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+                        /* If ( we need to check grouping
+                         *      and (   grouping missmatches
+                         *              or grouping position is incorrect
+                         *              or we are using the grouping position 0 twice
+                         *           )
+                         *    ) then return error
+                         */
+                        if( grouping_size && found_grouping
+                            && (
+                                   length_since_last_delim != grouping[0]
+                                   || last_grouping_pos>1
+                                   || (last_grouping_pos==0 && grouping_size>1)
+                                )
+                           ) return false;
+#endif
+
+                        if(Traits::eq(*begin, decimal_point)) {
+                            ++ begin;
+                            found_decimal = true;
+                            if (!found_number_before_exp && begin==end) return false;
+                            continue;
+                        }else {
+                            if (!found_number_before_exp) return false;
+                            break;
+                        }
+                    }
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+                    else if (grouping_size && Traits::eq(*begin, thousands_sep)){
+                        if(found_grouping)
+                        {
+                            /* It is not he first time, when we find thousands separator,
+                             * so we need to chek, is the distance between two groupings
+                             * equal to grouping[last_grouping_pos] */
+
+                            if (length_since_last_delim != grouping[last_grouping_pos] )
+                            {
+                                if (!last_grouping_pos) return false;
+                                else
+                                {
+                                    -- last_grouping_pos;
+                                    if (length_since_last_delim != grouping[last_grouping_pos]) return false;
+                                }
+                            } else
+                                /* We are calling the grouping[0] twice, when grouping size is more than 1 */
+                                if (grouping_size>1u && last_grouping_pos+1<grouping_size) return false;
+
+                        } else {
+                            /* Delimiter at the begining ',000' */
+                            if (!length_since_last_delim) return false;
+
+                            found_grouping = true;
+                            if (length_since_last_delim > grouping[last_grouping_pos] ) return false;
+                        }
+
+                        length_since_last_delim = 0;
+                        ++ begin;
+
+                        /* Delimiter at the end '100,' */
+                        if (begin == end) return false;
+                        continue;
+                    }
+#endif
+                    else return false;
+                }
+
+                ++begin;
+            }
+
+            // Exponent found
+            if ( begin != end && (Traits::eq(*begin, lowercase_e) || Traits::eq(*begin, capital_e)) ) {
+                ++ begin;
+                if ( begin == end ) return false;
+
+                bool exp_has_minus = false;
+                if(Traits::eq(*begin, minus)) {
+                    exp_has_minus = true;
+                    ++ begin;
+                    if ( begin == end ) return false;
+                } else if (Traits::eq(*begin, plus)) {
+                    ++ begin;
+                    if ( begin == end ) return false;
+                }
+
+                int exp_pow_of_10 = 0;
+                while ( begin != end )
+                {
+                    if ( *begin < czero
+                            || *begin >= czero + 10
+                            || exp_pow_of_10 * 10 < exp_pow_of_10) /* Overflows are checked lower more precisely*/
+                        return false;
+
+                    exp_pow_of_10 *= 10;
+                    exp_pow_of_10 += *begin - zero;
+                    ++ begin;
+                };
+
+                if ( exp_pow_of_10 ) {
+                    /* Overflows are checked lower */
+                    if ( exp_has_minus ) {
+                        pow_of_10 -= exp_pow_of_10;
+                    } else {
+                        pow_of_10 += exp_pow_of_10;
+                    }
+                }
+            }
+
+            /* We need a more accurate algorithm... We can not use current algorithm
+             * with long doubles (and with doubles if sizeof(double)==sizeof(long double)).
+             */
+            const wide_result_t result = std::pow(static_cast<wide_result_t>(10.0), pow_of_10) * mantissa;
+            value = static_cast<T>( has_minus ? (boost::math::changesign)(result) : result);
+
+            if ( (boost::math::isinf)(value) || (boost::math::isnan)(value) ) return false;
+
+            return true;
+        }
+// Unsilence buggy MS warnings like C4244: '+=' : conversion from 'int' to 'unsigned short', possible loss of data 
+#if defined(_MSC_VER) && (_MSC_VER == 1400) 
+#  pragma warning(pop) 
+#endif 
+    }
+
+    namespace detail // parser_buf
+    {
+        //
+        // class parser_buf:
+        // acts as a stream buffer which wraps around a pair of pointers
+        //
+        // This class is copied (and slightly changed) from
+        // boost/regex/v4/cpp_regex_traits.hpp
+        // Thanks John Maddock for it! (previous version had some
+        // problems with libc++ and some other STL implementations)
+        template <class BufferType, class charT>
+        class parser_buf : public BufferType {
+           typedef BufferType base_type;
+           typedef typename base_type::int_type int_type;
+           typedef typename base_type::char_type char_type;
+           typedef typename base_type::pos_type pos_type;
+           typedef ::std::streamsize streamsize;
+           typedef typename base_type::off_type off_type;
+
+        public:
+           parser_buf() : base_type() { setbuf(0, 0); }
+           const charT* getnext() { return this->gptr(); }
+#ifndef BOOST_NO_USING_TEMPLATE
+            using base_type::pptr;
+            using base_type::pbase;
+#else
+            charT* pptr() const { return base_type::pptr(); }
+            charT* pbase() const { return base_type::pbase(); }
+#endif
+           base_type* setbuf(char_type* s, streamsize n) {
+               this->setg(s, s, s + n);
+               return this;
+           }
+
+           pos_type seekpos(pos_type sp, ::std::ios_base::openmode which) {
+               if(which & ::std::ios_base::out)
+                  return pos_type(off_type(-1));
+               off_type size = static_cast<off_type>(this->egptr() - this->eback());
+               charT* g = this->eback();
+               if(off_type(sp) <= size)
+               {
+                  this->setg(g, g + off_type(sp), g + size);
+               }
+               return pos_type(off_type(-1));
+            }
+
+           pos_type seekoff(off_type off, ::std::ios_base::seekdir way, ::std::ios_base::openmode which) {
+               typedef typename boost::int_t<sizeof(way) * CHAR_BIT>::least cast_type;
+
+               if(which & ::std::ios_base::out)
+                  return pos_type(off_type(-1));
+               std::ptrdiff_t size = this->egptr() - this->eback();
+               std::ptrdiff_t pos = this->gptr() - this->eback();
+               charT* g = this->eback();
+               switch(static_cast<cast_type>(way))
+               {
+               case ::std::ios_base::beg:
+                  if((off < 0) || (off > size))
+                     return pos_type(off_type(-1));
+                  else
+                     this->setg(g, g + off, g + size);
+                  break;
+               case ::std::ios_base::end:
+                  if((off < 0) || (off > size))
+                     return pos_type(off_type(-1));
+                  else
+                     this->setg(g, g + size - off, g + size);
+                  break;
+               case ::std::ios_base::cur:
+               {
+                  std::ptrdiff_t newpos = static_cast<std::ptrdiff_t>(pos + off);
+                  if((newpos < 0) || (newpos > size))
+                     return pos_type(off_type(-1));
+                  else
+                     this->setg(g, g + newpos, g + size);
+                  break;
+               }
+               default: ;
+               }
+#ifdef BOOST_MSVC
+#pragma warning(push)
+#pragma warning(disable:4244)
+#endif
+               return static_cast<pos_type>(this->gptr() - this->eback());
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+            }
+        private:
+           parser_buf& operator=(const parser_buf&);
+           parser_buf(const parser_buf&);
+        };
+    }
+
+    namespace detail
+    {
+        struct do_not_construct_out_stream_t{};
+    }
+
+    namespace detail // optimized stream wrapper
+    {
+        // String representation of Source has an upper limit.
+        template< class CharT // a result of widest_char transformation
+                , class Traits // usually char_traits<CharT>
+                , bool RequiresStringbuffer
+                >
+        class lexical_stream_limited_src
+        {
+
+#if defined(BOOST_NO_STRINGSTREAM)
+            typedef std::ostrstream                         out_stream_t;
+#elif defined(BOOST_NO_STD_LOCALE)
+            typedef std::ostringstream                      out_stream_t;
+            typedef parser_buf<std::streambuf, char>        buffer_t;
+#else
+            typedef std::basic_ostringstream<CharT, Traits>                 out_stream_t;
+            typedef parser_buf<std::basic_streambuf<CharT, Traits>, CharT>  buffer_t;
+#endif
+            typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                RequiresStringbuffer,
+                out_stream_t,
+                do_not_construct_out_stream_t
+            >::type deduced_out_stream_t;
+
+            // A string representation of Source is written to [start, finish).
+            CharT* start;
+            CharT* finish;
+            deduced_out_stream_t out_stream;
+
+        public:
+            lexical_stream_limited_src(CharT* sta, CharT* fin) BOOST_NOEXCEPT
+              : start(sta)
+              , finish(fin)
+            {}
+
+        private:
+            // Undefined:
+            lexical_stream_limited_src(lexical_stream_limited_src const&);
+            void operator=(lexical_stream_limited_src const&);
+
+/************************************ HELPER FUNCTIONS FOR OPERATORS << ( ... ) ********************************/
+            bool shl_char(CharT ch) BOOST_NOEXCEPT
+            {
+                Traits::assign(*start, ch);
+                finish = start + 1;
+                return true;
+            }
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+            template <class T>
+            bool shl_char(T ch)
+            {
+                BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)) ,
+                    "boost::lexical_cast does not support narrowing of char types."
+                    "Use boost::locale instead" );
+#ifndef BOOST_LEXICAL_CAST_ASSUME_C_LOCALE
+                std::locale loc;
+                CharT const w = BOOST_USE_FACET(std::ctype<CharT>, loc).widen(ch);
+#else
+                CharT const w = static_cast<CharT>(ch);
+#endif
+                Traits::assign(*start, w);
+                finish = start + 1;
+                return true;
+            }
+#endif
+
+            bool shl_char_array(CharT const* str) BOOST_NOEXCEPT
+            {
+                start = const_cast<CharT*>(str);
+                finish = start + Traits::length(str);
+                return true;
+            }
+
+            template <class T>
+            bool shl_char_array(T const* str)
+            {
+                BOOST_STATIC_ASSERT_MSG(( sizeof(T) <= sizeof(CharT)),
+                    "boost::lexical_cast does not support narrowing of char types."
+                    "Use boost::locale instead" );
+                return shl_input_streamable(str);
+            }
+            
+            bool shl_char_array_limited(CharT const* str, std::size_t max_size) BOOST_NOEXCEPT
+            {
+                start = const_cast<CharT*>(str);
+                finish = std::find(start, start + max_size, Traits::to_char_type(0));
+                return true;
+            }
+
+            template<typename InputStreamable>
+            bool shl_input_streamable(InputStreamable& input)
+            {
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
+                // If you have compilation error at this point, than your STL library
+                // does not support such conversions. Try updating it.
+                BOOST_STATIC_ASSERT((boost::is_same<char, CharT>::value));
+#endif
+
+#ifndef BOOST_NO_EXCEPTIONS
+                out_stream.exceptions(std::ios::badbit);
+                try {
+#endif
+                bool const result = !(out_stream << input).fail();
+                const buffer_t* const p = static_cast<buffer_t*>(
+                    static_cast<std::basic_streambuf<CharT, Traits>*>(out_stream.rdbuf())
+                );
+                start = p->pbase();
+                finish = p->pptr();
+                return result;
+#ifndef BOOST_NO_EXCEPTIONS
+                } catch (const ::std::ios_base::failure& /*f*/) {
+                    return false;
+                }
+#endif
+            }
+
+            template <class T>
+            inline bool shl_signed(T n)
+            {
+                start = lcast_put_unsigned<Traits>(lcast_to_unsigned(n), finish);
+                if(n < 0)
+                {
+                    --start;
+                    CharT const minus = lcast_char_constants<CharT>::minus;
+                    Traits::assign(*start, minus);
+                }
+                return true;
+            }
+
+            template <class T, class SomeCharT>
+            bool shl_real_type(const T& val, SomeCharT* begin, SomeCharT*& end)
+            {
+                if (put_inf_nan(begin, end, val)) return true;
+                lcast_set_precision(out_stream, &val);
+                return shl_input_streamable(val);
+            }
+
+            static bool shl_real_type(float val, char* begin, char*& end)
+            {   using namespace std;
+                if (put_inf_nan(begin, end, val)) return true;
+                const double val_as_double = val;
+                end = begin + 
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+                    sprintf_s(begin, end-begin,
+#else
+                    sprintf(begin, 
+#endif
+                    "%.*g", static_cast<int>(boost::detail::lcast_get_precision<float>()), val_as_double);
+                return end > begin;
+            }
+
+            static bool shl_real_type(double val, char* begin, char*& end)
+            {   using namespace std;
+                if (put_inf_nan(begin, end, val)) return true;
+                end = begin + 
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+                    sprintf_s(begin, end-begin,
+#else
+                    sprintf(begin, 
+#endif
+                    "%.*g", static_cast<int>(boost::detail::lcast_get_precision<double>()), val);
+                return end > begin;
+            }
+
+#ifndef __MINGW32__
+            static bool shl_real_type(long double val, char* begin, char*& end)
+            {   using namespace std;
+                if (put_inf_nan(begin, end, val)) return true;
+                end = begin + 
+#if defined(_MSC_VER) && (_MSC_VER >= 1400) && !defined(__SGI_STL_PORT) && !defined(_STLPORT_VERSION)
+                    sprintf_s(begin, end-begin,
+#else
+                    sprintf(begin, 
+#endif
+                    "%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double>()), val );
+                return end > begin;
+            }
+#endif
+
+
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_SWPRINTF) && !defined(__MINGW32__)
+            static bool shl_real_type(float val, wchar_t* begin, wchar_t*& end)
+            {   using namespace std;
+                if (put_inf_nan(begin, end, val)) return true;
+                const double val_as_double = val;
+                end = begin + swprintf(begin, end-begin,
+                                       L"%.*g",
+                                       static_cast<int>(boost::detail::lcast_get_precision<float >()),
+                                       val_as_double );
+                return end > begin;
+            }
+
+            static bool shl_real_type(double val, wchar_t* begin, wchar_t*& end)
+            {   using namespace std;
+                if (put_inf_nan(begin, end, val)) return true;
+                end = begin + swprintf(begin, end-begin,
+                                          L"%.*g", static_cast<int>(boost::detail::lcast_get_precision<double >()), val );
+                return end > begin;
+            }
+
+            static bool shl_real_type(long double val, wchar_t* begin, wchar_t*& end)
+            {   using namespace std;
+                if (put_inf_nan(begin, end, val)) return true;
+                end = begin + swprintf(begin, end-begin,
+                                          L"%.*Lg", static_cast<int>(boost::detail::lcast_get_precision<long double >()), val );
+                return end > begin;
+            }
+#endif
+
+/************************************ OPERATORS << ( ... ) ********************************/
+        public:
+            template<class Alloc>
+            bool operator<<(std::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT
+            {
+                start = const_cast<CharT*>(str.data());
+                finish = start + str.length();
+                return true;
+            }
+
+            template<class Alloc>
+            bool operator<<(boost::container::basic_string<CharT,Traits,Alloc> const& str) BOOST_NOEXCEPT
+            {
+                start = const_cast<CharT*>(str.data());
+                finish = start + str.length();
+                return true;
+            }
+
+            bool operator<<(bool value) BOOST_NOEXCEPT
+            {
+                CharT const czero = lcast_char_constants<CharT>::zero;
+                Traits::assign(*start, Traits::to_char_type(czero + value));
+                finish = start + 1;
+                return true;
+            }
+
+            bool operator<<(const iterator_range<CharT*>& rng) BOOST_NOEXCEPT
+            {
+                start = rng.begin();
+                finish = rng.end();
+                return true; 
+            }
+            
+            bool operator<<(const iterator_range<const CharT*>& rng) BOOST_NOEXCEPT
+            {
+                start = const_cast<CharT*>(rng.begin());
+                finish = const_cast<CharT*>(rng.end());
+                return true; 
+            }
+
+            bool operator<<(const iterator_range<const signed char*>& rng) BOOST_NOEXCEPT
+            {
+                return (*this) << iterator_range<char*>(
+                    const_cast<char*>(reinterpret_cast<const char*>(rng.begin())),
+                    const_cast<char*>(reinterpret_cast<const char*>(rng.end()))
+                );
+            }
+
+            bool operator<<(const iterator_range<const unsigned char*>& rng) BOOST_NOEXCEPT
+            {
+                return (*this) << iterator_range<char*>(
+                    const_cast<char*>(reinterpret_cast<const char*>(rng.begin())),
+                    const_cast<char*>(reinterpret_cast<const char*>(rng.end()))
+                );
+            }
+
+            bool operator<<(const iterator_range<signed char*>& rng) BOOST_NOEXCEPT
+            {
+                return (*this) << iterator_range<char*>(
+                    reinterpret_cast<char*>(rng.begin()),
+                    reinterpret_cast<char*>(rng.end())
+                );
+            }
+
+            bool operator<<(const iterator_range<unsigned char*>& rng) BOOST_NOEXCEPT
+            {
+                return (*this) << iterator_range<char*>(
+                    reinterpret_cast<char*>(rng.begin()),
+                    reinterpret_cast<char*>(rng.end())
+                );
+            }
+
+            bool operator<<(char ch)                    { return shl_char(ch); }
+            bool operator<<(unsigned char ch)           { return ((*this) << static_cast<char>(ch)); }
+            bool operator<<(signed char ch)             { return ((*this) << static_cast<char>(ch)); }
+#if !defined(BOOST_LCAST_NO_WCHAR_T)
+            bool operator<<(wchar_t const* str)         { return shl_char_array(str); }
+            bool operator<<(wchar_t * str)              { return shl_char_array(str); }
+#ifndef BOOST_NO_INTRINSIC_WCHAR_T
+            bool operator<<(wchar_t ch)                 { return shl_char(ch); }
+#endif
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+            bool operator<<(char16_t ch)                { return shl_char(ch); }
+            bool operator<<(char16_t * str)             { return shl_char_array(str); }
+            bool operator<<(char16_t const * str)       { return shl_char_array(str); }
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+            bool operator<<(char32_t ch)                { return shl_char(ch); }
+            bool operator<<(char32_t * str)             { return shl_char_array(str); }
+            bool operator<<(char32_t const * str)       { return shl_char_array(str); }
+#endif
+            bool operator<<(unsigned char const* ch)    { return ((*this) << reinterpret_cast<char const*>(ch)); }
+            bool operator<<(unsigned char * ch)         { return ((*this) << reinterpret_cast<char *>(ch)); }
+            bool operator<<(signed char const* ch)      { return ((*this) << reinterpret_cast<char const*>(ch)); }
+            bool operator<<(signed char * ch)           { return ((*this) << reinterpret_cast<char *>(ch)); }
+            bool operator<<(char const* str)            { return shl_char_array(str); }
+            bool operator<<(char* str)                  { return shl_char_array(str); }
+            bool operator<<(short n)                    { return shl_signed(n); }
+            bool operator<<(int n)                      { return shl_signed(n); }
+            bool operator<<(long n)                     { return shl_signed(n); }
+            bool operator<<(unsigned short n)           { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+            bool operator<<(unsigned int n)             { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+            bool operator<<(unsigned long n)            { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+
+#if defined(BOOST_HAS_LONG_LONG)
+            bool operator<<(boost::ulong_long_type n)   { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+            bool operator<<(boost::long_long_type n)    { return shl_signed(n); }
+#elif defined(BOOST_HAS_MS_INT64)
+            bool operator<<(unsigned __int64 n)         { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+            bool operator<<(         __int64 n)         { return shl_signed(n); }
+#endif
+
+#ifdef BOOST_HAS_INT128
+        bool operator<<(const boost::uint128_type& n)   { start = lcast_put_unsigned<Traits>(n, finish); return true; }
+        bool operator<<(const boost::int128_type& n)    { return shl_signed(n); }
+#endif
+
+            bool operator<<(float val)                  { return shl_real_type(val, start, finish); }
+            bool operator<<(double val)                 { return shl_real_type(val, start, finish); }
+            bool operator<<(long double val)            {
+#ifndef __MINGW32__
+                return shl_real_type(val, start, finish);
+#else
+                return shl_real_type(static_cast<double>(val), start, finish);
+#endif
+            }
+            
+            template <std::size_t N>
+            bool operator<<(boost::array<CharT, N> const& input) BOOST_NOEXCEPT
+            { return shl_char_array_limited(input.begin(), N); }
+
+            template <std::size_t N>
+            bool operator<<(boost::array<unsigned char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+            template <std::size_t N>
+            bool operator<<(boost::array<signed char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+            template <std::size_t N>
+            bool operator<<(boost::array<const CharT, N> const& input) BOOST_NOEXCEPT
+            { return shl_char_array_limited(input.begin(), N); }
+
+            template <std::size_t N>
+            bool operator<<(boost::array<const unsigned char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+
+            template <std::size_t N>
+            bool operator<<(boost::array<const signed char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+ 
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+            template <std::size_t N>
+            bool operator<<(std::array<CharT, N> const& input) BOOST_NOEXCEPT
+            { 
+                if (input.size()) return shl_char_array_limited(&input[0], N);
+                else return true; 
+            }
+
+            template <std::size_t N>
+            bool operator<<(std::array<unsigned char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+            template <std::size_t N>
+            bool operator<<(std::array<signed char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<char, N> const& >(input)); }
+
+            template <std::size_t N>
+            bool operator<<(std::array<const CharT, N> const& input) BOOST_NOEXCEPT
+            { 
+                if (input.size()) return shl_char_array_limited(&input[0], N);
+                else return true; 
+            }
+
+            template <std::size_t N>
+            bool operator<<(std::array<const unsigned char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+
+            template <std::size_t N>
+            bool operator<<(std::array<const signed char, N> const& input) BOOST_NOEXCEPT
+            { return ((*this) << reinterpret_cast<boost::array<const char, N> const& >(input)); }
+#endif
+            
+            template <class InStreamable>
+            bool operator<<(const InStreamable& input)  { return shl_input_streamable(input); }
+
+/************************************ HELPER FUNCTIONS FOR OPERATORS >> ( ... ) ********************************/
+        private:
+
+            template <typename Type>
+            bool shr_unsigned(Type& output)
+            {
+                if (start == finish) return false;
+                CharT const minus = lcast_char_constants<CharT>::minus;
+                CharT const plus = lcast_char_constants<CharT>::plus;
+                bool has_minus = false;
+
+                /* We won`t use `start' any more, so no need in decrementing it after */
+                if ( Traits::eq(minus,*start) )
+                {
+                    ++start;
+                    has_minus = true;
+                } else if ( Traits::eq( plus, *start ) )
+                {
+                    ++start;
+                }
+
+                bool const succeed = lcast_ret_unsigned<Traits>(output, start, finish);
+
+                if (has_minus) {
+                    output = static_cast<Type>(0u - output);
+                }
+
+                return succeed;
+            }
+
+            template <typename Type>
+            bool shr_signed(Type& output)
+            {
+                if (start == finish) return false;
+                CharT const minus = lcast_char_constants<CharT>::minus;
+                CharT const plus = lcast_char_constants<CharT>::plus;
+                typedef BOOST_DEDUCED_TYPENAME make_unsigned<Type>::type utype;
+                utype out_tmp =0;
+                bool has_minus = false;
+
+                /* We won`t use `start' any more, so no need in decrementing it after */
+                if ( Traits::eq(minus,*start) )
+                {
+                    ++start;
+                    has_minus = true;
+                } else if ( Traits::eq(plus, *start) )
+                {
+                    ++start;
+                }
+
+                bool succeed = lcast_ret_unsigned<Traits>(out_tmp, start, finish);
+                if (has_minus) {
+                    utype const comp_val = (static_cast<utype>(1) << std::numeric_limits<Type>::digits);
+                    succeed = succeed && out_tmp<=comp_val;
+                    output = static_cast<Type>(0u - out_tmp);
+                } else {
+                    utype const comp_val = static_cast<utype>((std::numeric_limits<Type>::max)());
+                    succeed = succeed && out_tmp<=comp_val;
+                    output = out_tmp;
+                }
+                return succeed;
+            }
+
+            template<typename InputStreamable>
+            bool shr_using_base_class(InputStreamable& output)
+            {
+                BOOST_STATIC_ASSERT_MSG(
+                    (!boost::is_pointer<InputStreamable>::value),
+                    "boost::lexical_cast can not convert to pointers"
+                );
+
+#if defined(BOOST_NO_STRINGSTREAM) || defined(BOOST_NO_STD_LOCALE)
+                BOOST_STATIC_ASSERT_MSG((boost::is_same<char, CharT>::value),
+                    "boost::lexical_cast can not convert, because your STL library does not "
+                    "support such conversions. Try updating it."
+                );
+#endif
+
+#if defined(BOOST_NO_STRINGSTREAM)
+                std::istrstream stream(start, finish - start);
+#else
+
+                buffer_t buf;
+                buf.setbuf(start, finish - start);
+#if defined(BOOST_NO_STD_LOCALE)
+                std::istream stream(&buf);
+#else
+                std::basic_istream<CharT, Traits> stream(&buf);
+#endif // BOOST_NO_STD_LOCALE
+#endif // BOOST_NO_STRINGSTREAM
+
+#ifndef BOOST_NO_EXCEPTIONS
+                stream.exceptions(std::ios::badbit);
+                try {
+#endif
+                stream.unsetf(std::ios::skipws);
+                lcast_set_precision(stream, static_cast<InputStreamable*>(0));
+
+                return 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
+                Traits::eof();
+#endif
+
+#ifndef BOOST_NO_EXCEPTIONS
+                } catch (const ::std::ios_base::failure& /*f*/) {
+                    return false;
+                }
+#endif
+            }
+
+            template<class T>
+            inline bool shr_xchar(T& output)
+            {
+                BOOST_STATIC_ASSERT_MSG(( sizeof(CharT) == sizeof(T) ),
+                    "boost::lexical_cast does not support narrowing of character types."
+                    "Use boost::locale instead" );
+                bool const ok = (finish - start == 1);
+                if (ok) {
+                    CharT out;
+                    Traits::assign(out, *start);
+                    output = static_cast<T>(out);
+                }
+                return ok;
+            }
+
+/************************************ OPERATORS >> ( ... ) ********************************/
+        public:
+            bool operator>>(unsigned short& output)             { return shr_unsigned(output); }
+            bool operator>>(unsigned int& output)               { return shr_unsigned(output); }
+            bool operator>>(unsigned long int& output)          { return shr_unsigned(output); }
+            bool operator>>(short& output)                      { return shr_signed(output); }
+            bool operator>>(int& output)                        { return shr_signed(output); }
+            bool operator>>(long int& output)                   { return shr_signed(output); }
+#if defined(BOOST_HAS_LONG_LONG)
+            bool operator>>(boost::ulong_long_type& output)     { return shr_unsigned(output); }
+            bool operator>>(boost::long_long_type& output)      { return shr_signed(output); }
+#elif defined(BOOST_HAS_MS_INT64)
+            bool operator>>(unsigned __int64& output)           { return shr_unsigned(output); }
+            bool operator>>(__int64& output)                    { return shr_signed(output); }
+#endif
+
+#ifdef BOOST_HAS_INT128
+            bool operator>>(boost::uint128_type& output)        { return shr_unsigned(output); }
+            bool operator>>(boost::int128_type& output)         { return shr_signed(output); }
+#endif
+
+            bool operator>>(char& output)                       { return shr_xchar(output); }
+            bool operator>>(unsigned char& output)              { return shr_xchar(output); }
+            bool operator>>(signed char& output)                { return shr_xchar(output); }
+#if !defined(BOOST_LCAST_NO_WCHAR_T) && !defined(BOOST_NO_INTRINSIC_WCHAR_T)
+            bool operator>>(wchar_t& output)                    { return shr_xchar(output); }
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR16_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+            bool operator>>(char16_t& output)                   { return shr_xchar(output); }
+#endif
+#if !defined(BOOST_NO_CXX11_CHAR32_T) && !defined(BOOST_NO_CXX11_UNICODE_LITERALS)
+            bool operator>>(char32_t& output)                   { return shr_xchar(output); }
+#endif
+            template<class Alloc>
+            bool operator>>(std::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
+
+            template<class Alloc>
+            bool operator>>(boost::container::basic_string<CharT,Traits,Alloc>& str) { str.assign(start, finish); return true; }
+
+            
+    private:
+            template <std::size_t N, class ArrayT>
+            bool shr_std_array(ArrayT& output) BOOST_NOEXCEPT
+            {
+                using namespace std;
+                const std::size_t size = finish - start;
+                if (size > N - 1) { // `-1` because we need to store \0 at the end 
+                    return false;
+                }
+
+                memcpy(&output[0], start, size * sizeof(CharT));
+                output[size] = Traits::to_char_type(0);
+                return true;
+            }
+
+    public:
+
+            template <std::size_t N>
+            bool operator>>(boost::array<CharT, N>& output) BOOST_NOEXCEPT
+            { 
+                return shr_std_array<N>(output); 
+            }
+
+            template <std::size_t N>
+            bool operator>>(boost::array<unsigned char, N>& output)   
+            { 
+                return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output)); 
+            }
+
+            template <std::size_t N>
+            bool operator>>(boost::array<signed char, N>& output)   
+            { 
+                return ((*this) >> reinterpret_cast<boost::array<char, N>& >(output)); 
+            }
+ 
+#ifndef BOOST_NO_CXX11_HDR_ARRAY
+            template <std::size_t N>
+            bool operator>>(std::array<CharT, N>& output) BOOST_NOEXCEPT
+            { 
+                return shr_std_array<N>(output); 
+            }
+
+            template <std::size_t N>
+            bool operator>>(std::array<unsigned char, N>& output)   
+            { 
+                return ((*this) >> reinterpret_cast<std::array<char, N>& >(output)); 
+            }
+
+            template <std::size_t N>
+            bool operator>>(std::array<signed char, N>& output)
+            { 
+                return ((*this) >> reinterpret_cast<std::array<char, N>& >(output)); 
+            }
+#endif
+
+
+            /*
+             * case "-0" || "0" || "+0" :   output = false; return true;
+             * case "1" || "+1":            output = true;  return true;
+             * default:                     return false;
+             */
+            bool operator>>(bool& output) BOOST_NOEXCEPT
+            {
+                CharT const zero = lcast_char_constants<CharT>::zero;
+                CharT const plus = lcast_char_constants<CharT>::plus;
+                CharT const minus = lcast_char_constants<CharT>::minus;
+
+                switch(finish-start)
+                {
+                    case 1:
+                        output = Traits::eq(start[0],  zero+1);
+                        return output || Traits::eq(start[0], zero );
+                    case 2:
+                        if ( Traits::eq( plus, *start) )
+                        {
+                            ++start;
+                            output = Traits::eq(start[0], zero +1);
+                            return output || Traits::eq(start[0], zero );
+                        } else
+                        {
+                            output = false;
+                            return Traits::eq( minus, *start)
+                                && Traits::eq( zero, start[1]);
+                        }
+                    default:
+                        output = false; // Suppress warning about uninitalized variable
+                        return false;
+                }
+            }
+
+            bool operator>>(float& output) { return lcast_ret_float<Traits>(output,start,finish); }
+
+        private:
+            // Not optimised converter
+            template <class T>
+            bool float_types_converter_internal(T& output, int /*tag*/) {
+                if (parse_inf_nan(start, finish, output)) return true;
+                bool return_value = shr_using_base_class(output);
+
+                /* Some compilers and libraries successfully
+                 * parse 'inf', 'INFINITY', '1.0E', '1.0E-'...
+                 * We are trying to provide a unified behaviour,
+                 * so we just forbid such conversions (as some
+                 * of the most popular compilers/libraries do)
+                 * */
+                CharT const minus = lcast_char_constants<CharT>::minus;
+                CharT const plus = lcast_char_constants<CharT>::plus;
+                CharT const capital_e = lcast_char_constants<CharT>::capital_e;
+                CharT const lowercase_e = lcast_char_constants<CharT>::lowercase_e;
+                if ( return_value &&
+                     (
+                        Traits::eq(*(finish-1), lowercase_e)                   // 1.0e
+                        || Traits::eq(*(finish-1), capital_e)                  // 1.0E
+                        || Traits::eq(*(finish-1), minus)                      // 1.0e- or 1.0E-
+                        || Traits::eq(*(finish-1), plus)                       // 1.0e+ or 1.0E+
+                     )
+                ) return false;
+
+                return return_value;
+            }
+
+            // Optimised converter
+            bool float_types_converter_internal(double& output,char /*tag*/) {
+                return lcast_ret_float<Traits>(output,start,finish);
+            }
+        public:
+
+            bool operator>>(double& output)
+            {
+                /*
+                 * Some compilers implement long double as double. In that case these types have
+                 * same size, same precision, same max and min values... And it means,
+                 * that current implementation of lcast_ret_float cannot be used for type
+                 * double, because it will give a big precision loss.
+                 * */
+                boost::mpl::if_c<
+#if (defined(BOOST_HAS_LONG_LONG) || defined(BOOST_HAS_MS_INT64)) && !defined(BOOST_MATH_NO_LONG_DOUBLE_MATH_FUNCTIONS)
+                    boost::type_traits::ice_eq< sizeof(double), sizeof(long double) >::value,
+#else
+                     1,
+#endif
+                    int,
+                    char
+                >::type tag = 0;
+
+                return float_types_converter_internal(output, tag);
+            }
+
+            bool operator>>(long double& output)
+            {
+                int tag = 0;
+                return float_types_converter_internal(output, tag);
+            }
+
+            // Generic istream-based algorithm.
+            // lcast_streambuf_for_target<InputStreamable>::value is true.
+            template<typename InputStreamable>
+            bool operator>>(InputStreamable& output) { return shr_using_base_class(output); }
+        };
+    }
+
+    namespace detail
+    {
+        template<typename T>
+        struct is_stdstring
+        {
+            BOOST_STATIC_CONSTANT(bool, value = false );
+        };
+
+        template<typename CharT, typename Traits, typename Alloc>
+        struct is_stdstring< std::basic_string<CharT, Traits, Alloc> >
+        {
+            BOOST_STATIC_CONSTANT(bool, value = true );
+        };
+
+        template<typename CharT, typename Traits, typename Alloc>
+        struct is_stdstring< boost::container::basic_string<CharT, Traits, Alloc> >
+        {
+            BOOST_STATIC_CONSTANT(bool, value = true );
+        };
+
+        template<typename Target, typename Source>
+        struct is_arithmetic_and_not_xchars
+        {
+            BOOST_STATIC_CONSTANT(bool, value =
+               (
+                   boost::type_traits::ice_and<
+                           boost::is_arithmetic<Source>::value,
+                           boost::is_arithmetic<Target>::value,
+                           boost::type_traits::ice_not<
+                                detail::is_char_or_wchar<Target>::value
+                           >::value,
+                           boost::type_traits::ice_not<
+                                detail::is_char_or_wchar<Source>::value
+                           >::value
+                   >::value
+               )
+            );
+        };
+
+        /*
+         * is_xchar_to_xchar<Target, Source>::value is true, when
+         * Target and Souce are the same char types, or when
+         * Target and Souce are char types of the same size.
+         */
+        template<typename Target, typename Source>
+        struct is_xchar_to_xchar
+        {
+            BOOST_STATIC_CONSTANT(bool, value =
+                (
+                    boost::type_traits::ice_or<
+                        boost::type_traits::ice_and<
+                             is_same<Source,Target>::value,
+                             is_char_or_wchar<Target>::value
+                        >::value,
+                        boost::type_traits::ice_and<
+                             boost::type_traits::ice_eq< sizeof(char),sizeof(Target)>::value,
+                             boost::type_traits::ice_eq< sizeof(char),sizeof(Source)>::value,
+                             is_char_or_wchar<Target>::value,
+                             is_char_or_wchar<Source>::value
+                        >::value
+                    >::value
+                )
+            );
+        };
+
+        template<typename Target, typename Source>
+        struct is_char_array_to_stdstring
+        {
+            BOOST_STATIC_CONSTANT(bool, value = false );
+        };
+
+        template<typename CharT, typename Traits, typename Alloc>
+        struct is_char_array_to_stdstring< std::basic_string<CharT, Traits, Alloc>, CharT* >
+        {
+            BOOST_STATIC_CONSTANT(bool, value = true );
+        };
+
+        template<typename CharT, typename Traits, typename Alloc>
+        struct is_char_array_to_stdstring< std::basic_string<CharT, Traits, Alloc>, const CharT* >
+        {
+            BOOST_STATIC_CONSTANT(bool, value = true );
+        };
+
+        template<typename CharT, typename Traits, typename Alloc>
+        struct is_char_array_to_stdstring< boost::container::basic_string<CharT, Traits, Alloc>, CharT* >
+        {
+            BOOST_STATIC_CONSTANT(bool, value = true );
+        };
+
+        template<typename CharT, typename Traits, typename Alloc>
+        struct is_char_array_to_stdstring< boost::container::basic_string<CharT, Traits, Alloc>, const CharT* >
+        {
+            BOOST_STATIC_CONSTANT(bool, value = true );
+        };
+
+#if (defined _MSC_VER)
+# pragma warning( push )
+# pragma warning( disable : 4701 ) // possible use of ... before initialization
+# pragma warning( disable : 4702 ) // unreachable code
+# pragma warning( disable : 4267 ) // conversion from 'size_t' to 'unsigned int'
+#endif
+        template<typename Target, typename Source>
+        struct lexical_cast_do_cast
+        {
+            static inline Target lexical_cast_impl(const Source& arg)
+            {
+                typedef lexical_cast_stream_traits<Source, Target>  stream_trait;
+                
+                typedef detail::lexical_stream_limited_src<
+                    BOOST_DEDUCED_TYPENAME stream_trait::char_type, 
+                    BOOST_DEDUCED_TYPENAME stream_trait::traits, 
+                    stream_trait::requires_stringbuf 
+                > interpreter_type;
+
+                // Target type must be default constructible
+                Target result;               
+
+                BOOST_DEDUCED_TYPENAME stream_trait::char_type buf[stream_trait::len_t::value + 1];
+                stream_trait::len_t::check_coverage();
+
+                interpreter_type interpreter(buf, buf + stream_trait::len_t::value + 1);
+
+                // Disabling ADL, by directly specifying operators.
+                if(!(interpreter.operator <<(arg) && interpreter.operator >>(result)))
+                  BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+
+                return result;
+            }
+        };
+#if (defined _MSC_VER)
+# pragma warning( pop )
+#endif
+
+        template <typename Source>
+        struct lexical_cast_copy
+        {
+            static inline const Source& lexical_cast_impl(const Source &arg) BOOST_NOEXCEPT
+            {
+                return arg;
+            }
+        };
+
+        template <class Source, class Target >
+        struct detect_precision_loss
+        {
+         typedef boost::numeric::Trunc<Source> Rounder;
+         typedef Source source_type ;
+
+         typedef BOOST_DEDUCED_TYPENAME mpl::if_<
+            boost::is_arithmetic<Source>, Source, Source const&
+          >::type argument_type ;
+
+         static source_type nearbyint ( argument_type s )
+         {
+            const source_type near_int = Rounder::nearbyint(s);
+            if (near_int) {
+                const source_type orig_div_round = s / near_int;
+                const source_type eps = std::numeric_limits<source_type>::epsilon();
+
+                if ((orig_div_round > 1 ? orig_div_round - 1 : 1 - orig_div_round) > eps)
+                    BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+            }
+
+            return s ;
+         }
+
+         typedef typename Rounder::round_style round_style;
+        } ;
+
+        template <class Source, class Target >
+        struct nothrow_overflow_handler
+        {
+          void operator() ( boost::numeric::range_check_result r )
+          {
+            if (r != boost::numeric::cInRange)
+                BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+          }
+        } ;
+
+        template <typename Target, typename Source>
+        struct lexical_cast_dynamic_num_not_ignoring_minus
+        {
+            static inline Target lexical_cast_impl(const Source &arg)
+            {
+                return boost::numeric::converter<
+                        Target,
+                        Source,
+                        boost::numeric::conversion_traits<Target,Source>,
+                        nothrow_overflow_handler<Source, Target>,
+                        detect_precision_loss<Source, Target>
+                >::convert(arg);
+            }
+        };
+
+        template <typename Target, typename Source>
+        struct lexical_cast_dynamic_num_ignoring_minus
+        {
+            static inline Target lexical_cast_impl(const Source &arg)
+            {
+                typedef BOOST_DEDUCED_TYPENAME boost::mpl::eval_if_c<
+                        boost::is_float<Source>::value,
+                        boost::mpl::identity<Source>,
+                        boost::make_unsigned<Source>
+                >::type usource_t;
+
+                typedef boost::numeric::converter<
+                        Target,
+                        usource_t,
+                        boost::numeric::conversion_traits<Target,usource_t>,
+                        nothrow_overflow_handler<usource_t, Target>,
+                        detect_precision_loss<usource_t, Target>
+                > converter_t;
+
+                return (
+                    arg < 0 ? static_cast<Target>(0u - converter_t::convert(0u - arg)) : converter_t::convert(arg)
+                );
+            }
+        };
+
+        /*
+         * lexical_cast_dynamic_num follows the rules:
+         * 1) If Source can be converted to Target without precision loss and
+         * without overflows, then assign Source to Target and return
+         *
+         * 2) If Source is less than 0 and Target is an unsigned integer,
+         * then negate Source, check the requirements of rule 1) and if
+         * successful, assign static_casted Source to Target and return
+         *
+         * 3) Otherwise throw a bad_lexical_cast exception
+         *
+         *
+         * Rule 2) required because boost::lexical_cast has the behavior of
+         * stringstream, which uses the rules of scanf for conversions. And
+         * in the C99 standard for unsigned input value minus sign is
+         * optional, so if a negative number is read, no errors will arise
+         * and the result will be the two's complement.
+         */
+        template <typename Target, typename Source>
+        struct lexical_cast_dynamic_num
+        {
+            static inline Target lexical_cast_impl(const Source &arg)
+            {
+                typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                    boost::type_traits::ice_and<
+                        boost::type_traits::ice_or<
+                            boost::is_signed<Source>::value,
+                            boost::is_float<Source>::value
+                        >::value,
+                        boost::type_traits::ice_not<
+                            boost::is_same<Source, bool>::value
+                        >::value,
+                        boost::type_traits::ice_not<
+                            boost::is_same<Target, bool>::value
+                        >::value,
+                        boost::is_unsigned<Target>::value
+                    >::value,
+                    lexical_cast_dynamic_num_ignoring_minus<Target, Source>,
+                    lexical_cast_dynamic_num_not_ignoring_minus<Target, Source>
+                >::type caster_type;
+
+                return caster_type::lexical_cast_impl(arg);
+            }
+        };
+    }
+
+    template <typename Target, typename Source>
+    inline Target lexical_cast(const Source &arg)
+    {
+        typedef BOOST_DEDUCED_TYPENAME boost::detail::array_to_pointer_decay<Source>::type src;
+
+        typedef BOOST_DEDUCED_TYPENAME boost::type_traits::ice_or<
+                boost::detail::is_xchar_to_xchar<Target, src >::value,
+                boost::detail::is_char_array_to_stdstring<Target, src >::value,
+                boost::type_traits::ice_and<
+                     boost::is_same<Target, src >::value,
+                     boost::detail::is_stdstring<Target >::value
+                >::value
+        > shall_we_copy_t;
+
+        typedef BOOST_DEDUCED_TYPENAME
+                boost::detail::is_arithmetic_and_not_xchars<Target, src > shall_we_copy_with_dynamic_check_t;
+
+        typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+            shall_we_copy_t::value,
+            boost::detail::lexical_cast_copy<src >,
+            BOOST_DEDUCED_TYPENAME boost::mpl::if_c<
+                 shall_we_copy_with_dynamic_check_t::value,
+                 boost::detail::lexical_cast_dynamic_num<Target, src >,
+                 boost::detail::lexical_cast_do_cast<Target, src >
+            >::type
+        >::type caster_type;
+
+        return caster_type::lexical_cast_impl(arg);
+    }
+
+    template <typename Target>
+    inline Target lexical_cast(const char* chars, std::size_t count)
+     {
+        return ::boost::lexical_cast<Target>(
+            ::boost::iterator_range<const char*>(chars, chars + count)
+        );
+    }
+
+
+    template <typename Target>
+    inline Target lexical_cast(const unsigned char* chars, std::size_t count)
+    {
+         return ::boost::lexical_cast<Target>(
+            ::boost::iterator_range<const unsigned char*>(chars, chars + count)
+         );
+     }
+
+    template <typename Target>
+    inline Target lexical_cast(const signed char* chars, std::size_t count)
+    {
+        return ::boost::lexical_cast<Target>(
+            ::boost::iterator_range<const signed char*>(chars, chars + count)
+        );
+    }
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+    template <typename Target>
+    inline Target lexical_cast(const wchar_t* chars, std::size_t count)
+    {
+        return ::boost::lexical_cast<Target>(
+            ::boost::iterator_range<const wchar_t*>(chars, chars + count)
+        );
+    }
+#endif
+#ifndef BOOST_NO_CXX11_CHAR16_T
+    template <typename Target>
+    inline Target lexical_cast(const char16_t* chars, std::size_t count)
+    {
+        return ::boost::lexical_cast<Target>(
+            ::boost::iterator_range<const char16_t*>(chars, chars + count)
+        );
+    }
+#endif
+#ifndef BOOST_NO_CXX11_CHAR32_T
+    template <typename Target>
+    inline Target lexical_cast(const char32_t* chars, std::size_t count)
+    {
+        return ::boost::lexical_cast<Target>(
+            ::boost::iterator_range<const char32_t*>(chars, chars + count)
+        );
+    }
+#endif
+
+} // namespace boost
+
+#else // #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+
+namespace boost {
+    namespace detail
+    {
+
+        // selectors for choosing stream character type
+        template<typename Type>
+        struct stream_char
+        {
+            typedef char type;
+        };
+
+#ifndef BOOST_LCAST_NO_WCHAR_T
+#ifndef 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
+
+        // stream wrapper for handling lexical conversions
+        template<typename Target, typename Source, typename Traits>
+        class lexical_stream
+        {
+        private:
+            typedef typename widest_char<
+                typename stream_char<Target>::type,
+                typename stream_char<Source>::type>::type char_type;
+
+            typedef Traits traits_type;
+
+        public:
+            lexical_stream(char_type* = 0, char_type* = 0)
+            {
+                stream.unsetf(std::ios::skipws);
+                lcast_set_precision(stream, static_cast<Source*>(0), static_cast<Target*>(0) );
+            }
+            ~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
+                           traits_type::eof();
+#endif
+            }
+
+            bool operator>>(std::string &output)
+            {
+                #if defined(BOOST_NO_STRINGSTREAM)
+                stream << '\0';
+                #endif
+                stream.str().swap(output);
+                return true;
+            }
+            #ifndef BOOST_LCAST_NO_WCHAR_T
+            bool operator>>(std::wstring &output)
+            {
+                stream.str().swap(output);
+                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,traits_type> stream;
+            #endif
+        };
+    }
+
+    // call-by-value fallback version (deprecated)
+
+    template<typename Target, typename Source>
+    Target lexical_cast(Source arg)
+    {
+        typedef typename detail::widest_char< 
+            BOOST_DEDUCED_TYPENAME detail::stream_char<Target>::type 
+          , BOOST_DEDUCED_TYPENAME detail::stream_char<Source>::type 
+        >::type char_type; 
+
+        typedef std::char_traits<char_type> traits;
+        detail::lexical_stream<Target, Source, traits> interpreter;
+        Target result;
+
+        if(!(interpreter << arg && interpreter >> result))
+          BOOST_LCAST_THROW_BAD_CAST(Source, Target);
+        return result;
+    }
+
+} // namespace boost
+
+#endif
+
+// Copyright Kevlin Henney, 2000-2005.
+// Copyright Alexander Nasonov, 2006-2010.
+// Copyright Antony Polukhin, 2011-2013.
+//
+// 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 BOOST_LCAST_THROW_BAD_CAST
+#undef BOOST_LCAST_NO_WCHAR_T
+
+#endif // BOOST_LEXICAL_CAST_INCLUDED
+