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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\functional\detail\float_functions.hpp
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// Copyright 2005-2007 Daniel James. // 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) #if !defined(BOOST_FUNCTIONAL_DETAIL_FLOAT_FUNCTIONS_HPP) #define BOOST_FUNCTIONAL_DETAIL_FLOAT_FUNCTIONS_HPP #include
#if defined(_MSC_VER) && (_MSC_VER >= 1020) # pragma once #endif // The C++ standard requires that the C float functions are overloarded // for float, double and long double in the std namespace, but some of the older // library implementations don't support this. On some that don't, the C99 // float functions (frexpf, frexpl, etc.) are available. // // Some of this is based on guess work. If I don't know any better I assume that // the standard C++ overloaded functions are available. If they're not then this // means that the argument is cast to a double and back, which is inefficient // and will give pretty bad results for long doubles - so if you know better // let me know. // STLport: #if defined(__SGI_STL_PORT) || defined(_STLPORT_VERSION) # if (defined(__GNUC__) && __GNUC__ < 3 && (defined(linux) || defined(__linux) || defined(__linux__))) || defined(__DMC__) # define BOOST_HASH_USE_C99_FLOAT_FUNCS # elif defined(BOOST_MSVC) && BOOST_MSVC < 1300 # define BOOST_HASH_USE_C99_FLOAT_FUNCS # else # define BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS # endif // Roguewave: // // On borland 5.51, with roguewave 2.1.1 the standard C++ overloads aren't // defined, but for the same version of roguewave on sunpro they are. #elif defined(_RWSTD_VER) # if defined(__BORLANDC__) # define BOOST_HASH_USE_C99_FLOAT_FUNCS # define BOOST_HASH_C99_NO_FLOAT_FUNCS # elif defined(__DECCXX) # define BOOST_HASH_USE_C99_FLOAT_FUNCS # else # define BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS # endif // libstdc++ (gcc 3.0 onwards, I think) #elif defined(__GLIBCPP__) || defined(__GLIBCXX__) # define BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS // SGI: #elif defined(__STL_CONFIG_H) # if defined(linux) || defined(__linux) || defined(__linux__) # define BOOST_HASH_USE_C99_FLOAT_FUNCS # else # define BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS # endif // Dinkumware. #elif (defined(_YVALS) && !defined(__IBMCPP__)) || defined(_CPPLIB_VER) // Overloaded float functions were probably introduced in an earlier version // than this. # if defined(_CPPLIB_VER) && (_CPPLIB_VER >= 402) # define BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS # else # define BOOST_HASH_USE_C99_FLOAT_FUNCS # endif // Digital Mars #elif defined(__DMC__) # define BOOST_HASH_USE_C99_FLOAT_FUNCS // Use overloaded float functions by default. #else # define BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS #endif namespace boost { namespace hash_detail { inline float call_ldexp(float v, int exp) { using namespace std; #if defined(BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS) || \ defined(BOOST_HASH_C99_NO_FLOAT_FUNCS) return ldexp(v, exp); #else return ldexpf(v, exp); #endif } inline double call_ldexp(double v, int exp) { using namespace std; return ldexp(v, exp); } inline long double call_ldexp(long double v, int exp) { using namespace std; #if defined(BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS) return ldexp(v, exp); #else return ldexpl(v, exp); #endif } inline float call_frexp(float v, int* exp) { using namespace std; #if defined(BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS) || \ defined(BOOST_HASH_C99_NO_FLOAT_FUNCS) return frexp(v, exp); #else return frexpf(v, exp); #endif } inline double call_frexp(double v, int* exp) { using namespace std; return frexp(v, exp); } inline long double call_frexp(long double v, int* exp) { using namespace std; #if defined(BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS) return frexp(v, exp); #else return frexpl(v, exp); #endif } } } #if defined(BOOST_HASH_USE_C99_FLOAT_FUNCS) #undef BOOST_HASH_USE_C99_FLOAT_FUNCS #endif #if defined(BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS) #undef BOOST_HASH_USE_OVERLOAD_FLOAT_FUNCS #endif #if defined(BOOST_HASH_C99_NO_FLOAT_FUNCS) #undef BOOST_HASH_C99_NO_FLOAT_FUNCS #endif #endif
float_functions.hpp
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