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Diffstat (limited to '3rdParty/Boost/boost/detail/lcast_precision.hpp')
m--------- | 3rdParty/Boost | 0 | ||||
-rw-r--r-- | 3rdParty/Boost/boost/detail/lcast_precision.hpp | 184 |
2 files changed, 0 insertions, 184 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost new file mode 160000 +Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79 diff --git a/3rdParty/Boost/boost/detail/lcast_precision.hpp b/3rdParty/Boost/boost/detail/lcast_precision.hpp deleted file mode 100644 index d40ca21..0000000 --- a/3rdParty/Boost/boost/detail/lcast_precision.hpp +++ /dev/null @@ -1,184 +0,0 @@ -// Copyright Alexander Nasonov & Paul A. Bristow 2006. - -// Use, modification and distribution are subject to the -// Boost Software License, Version 1.0. -// (See accompanying file LICENSE_1_0.txt -// or copy at http://www.boost.org/LICENSE_1_0.txt) - -#ifndef BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED -#define BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED - -#include <climits> -#include <ios> -#include <limits> - -#include <boost/config.hpp> -#include <boost/integer_traits.hpp> - -#ifndef BOOST_NO_IS_ABSTRACT -// Fix for SF:1358600 - lexical_cast & pure virtual functions & VC 8 STL -#include <boost/mpl/if.hpp> -#include <boost/type_traits/is_abstract.hpp> -#endif - -#if defined(BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS) || \ - (defined(BOOST_MSVC) && (BOOST_MSVC<1310)) - -#define BOOST_LCAST_NO_COMPILE_TIME_PRECISION -#endif - -#ifdef BOOST_LCAST_NO_COMPILE_TIME_PRECISION -#include <boost/assert.hpp> -#else -#include <boost/static_assert.hpp> -#endif - -namespace boost { namespace detail { - -class lcast_abstract_stub {}; - -#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION -// Calculate an argument to pass to std::ios_base::precision from -// lexical_cast. See alternative implementation for broken standard -// libraries in lcast_get_precision below. Keep them in sync, please. -template<class T> -struct lcast_precision -{ -#ifdef BOOST_NO_IS_ABSTRACT - typedef std::numeric_limits<T> limits; // No fix for SF:1358600. -#else - typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_< - boost::is_abstract<T> - , std::numeric_limits<lcast_abstract_stub> - , std::numeric_limits<T> - >::type limits; -#endif - - BOOST_STATIC_CONSTANT(bool, use_default_precision = - !limits::is_specialized || limits::is_exact - ); - - BOOST_STATIC_CONSTANT(bool, is_specialized_bin = - !use_default_precision && - limits::radix == 2 && limits::digits > 0 - ); - - BOOST_STATIC_CONSTANT(bool, is_specialized_dec = - !use_default_precision && - limits::radix == 10 && limits::digits10 > 0 - ); - - BOOST_STATIC_CONSTANT(std::streamsize, streamsize_max = - boost::integer_traits<std::streamsize>::const_max - ); - - BOOST_STATIC_CONSTANT(unsigned int, precision_dec = limits::digits10 + 1U); - - BOOST_STATIC_ASSERT(!is_specialized_dec || - precision_dec <= streamsize_max + 0UL - ); - - BOOST_STATIC_CONSTANT(unsigned long, precision_bin = - 2UL + limits::digits * 30103UL / 100000UL - ); - - BOOST_STATIC_ASSERT(!is_specialized_bin || - (limits::digits + 0UL < ULONG_MAX / 30103UL && - precision_bin > limits::digits10 + 0UL && - precision_bin <= streamsize_max + 0UL) - ); - - BOOST_STATIC_CONSTANT(std::streamsize, value = - is_specialized_bin ? precision_bin - : is_specialized_dec ? precision_dec : 6 - ); -}; -#endif - -template<class T> -inline std::streamsize lcast_get_precision(T* = 0) -{ -#ifndef BOOST_LCAST_NO_COMPILE_TIME_PRECISION - return lcast_precision<T>::value; -#else // Follow lcast_precision algorithm at run-time: - -#ifdef BOOST_NO_IS_ABSTRACT - typedef std::numeric_limits<T> limits; // No fix for SF:1358600. -#else - typedef BOOST_DEDUCED_TYPENAME boost::mpl::if_< - boost::is_abstract<T> - , std::numeric_limits<lcast_abstract_stub> - , std::numeric_limits<T> - >::type limits; -#endif - - bool const use_default_precision = - !limits::is_specialized || limits::is_exact; - - if(!use_default_precision) - { // Includes all built-in floating-point types, float, double ... - // and UDT types for which digits (significand bits) is defined (not zero) - - bool const is_specialized_bin = - limits::radix == 2 && limits::digits > 0; - bool const is_specialized_dec = - limits::radix == 10 && limits::digits10 > 0; - std::streamsize const streamsize_max = - (boost::integer_traits<std::streamsize>::max)(); - - if(is_specialized_bin) - { // Floating-point types with - // limits::digits defined by the specialization. - - unsigned long const digits = limits::digits; - unsigned long const precision = 2UL + digits * 30103UL / 100000UL; - // unsigned long is selected because it is at least 32-bits - // and thus ULONG_MAX / 30103UL is big enough for all types. - BOOST_ASSERT( - digits < ULONG_MAX / 30103UL && - precision > limits::digits10 + 0UL && - precision <= streamsize_max + 0UL - ); - return precision; - } - else if(is_specialized_dec) - { // Decimal Floating-point type, most likely a User Defined Type - // rather than a real floating-point hardware type. - unsigned int const precision = limits::digits10 + 1U; - BOOST_ASSERT(precision <= streamsize_max + 0UL); - return precision; - } - } - - // Integral type (for which precision has no effect) - // or type T for which limits is NOT specialized, - // so assume stream precision remains the default 6 decimal digits. - // Warning: if your User-defined Floating-point type T is NOT specialized, - // then you may lose accuracy by only using 6 decimal digits. - // To avoid this, you need to specialize T with either - // radix == 2 and digits == the number of significand bits, - // OR - // radix = 10 and digits10 == the number of decimal digits. - - return 6; -#endif -} - -template<class T> -inline void lcast_set_precision(std::ios_base& stream, T*) -{ - stream.precision(lcast_get_precision<T>()); -} - -template<class Source, class Target> -inline void lcast_set_precision(std::ios_base& stream, Source*, Target*) -{ - std::streamsize const s = lcast_get_precision((Source*)0); - std::streamsize const t = lcast_get_precision((Target*)0); - stream.precision(s > t ? s : t); -} - -}} - -#endif // BOOST_DETAIL_LCAST_PRECISION_HPP_INCLUDED - |