EVOLUTION-MANAGER

Edit File: float_sizes.hpp

/* * 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) * * Copyright (c) 2018 Andrey Semashev */ /*! * \file atomic/detail/float_sizes.hpp * * This header defines macros for testing buitin floating point type sizes */ #ifndef BOOST_ATOMIC_DETAIL_FLOAT_SIZES_HPP_INCLUDED_ #define BOOST_ATOMIC_DETAIL_FLOAT_SIZES_HPP_INCLUDED_ #include <float.h> #include <boost/atomic/detail/config.hpp> #ifdef BOOST_HAS_PRAGMA_ONCE #pragma once #endif // Detect value sizes of the different floating point types. The value sizes may be less than the corresponding type sizes // if the type contains padding bits. This is typical e.g. with 80-bit extended float types, which are often represented as 128-bit types. // See: https://en.wikipedia.org/wiki/IEEE_754 // For Intel x87 extended double see: https://en.wikipedia.org/wiki/Extended_precision#x86_Architecture_Extended_Precision_Format // For IBM extended double (a.k.a. double-double) see: https://en.wikipedia.org/wiki/Long_double#Implementations, https://gcc.gnu.org/wiki/Ieee128PowerPC #if (FLT_RADIX+0) == 2 #if ((FLT_MANT_DIG+0) == 11) && ((FLT_MAX_EXP+0) == 16) // IEEE 754 binary16 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 2 #elif ((FLT_MANT_DIG+0) == 24) && ((FLT_MAX_EXP+0) == 128) // IEEE 754 binary32 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 4 #elif ((FLT_MANT_DIG+0) == 53) && ((FLT_MAX_EXP+0) == 1024) // IEEE 754 binary64 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 8 #elif ((FLT_MANT_DIG+0) == 64) && ((FLT_MAX_EXP+0) == 16384) // x87 extended double #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 10 #elif ((FLT_MANT_DIG+0) == 106) && ((FLT_MAX_EXP+0) == 1024) // IBM extended double #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 16 #elif ((FLT_MANT_DIG+0) == 113) && ((FLT_MAX_EXP+0) == 16384) // IEEE 754 binary128 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 16 #elif ((FLT_MANT_DIG+0) == 237) && ((FLT_MAX_EXP+0) == 262144) // IEEE 754 binary256 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 32 #endif #if ((DBL_MANT_DIG+0) == 11) && ((DBL_MAX_EXP+0) == 16) // IEEE 754 binary16 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 2 #elif ((DBL_MANT_DIG+0) == 24) && ((DBL_MAX_EXP+0) == 128) // IEEE 754 binary32 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 4 #elif ((DBL_MANT_DIG+0) == 53) && ((DBL_MAX_EXP+0) == 1024) // IEEE 754 binary64 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 8 #elif ((DBL_MANT_DIG+0) == 64) && ((DBL_MAX_EXP+0) == 16384) // x87 extended double #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 10 #elif ((DBL_MANT_DIG+0) == 106) && ((DBL_MAX_EXP+0) == 1024) // IBM extended double #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 16 #elif ((DBL_MANT_DIG+0) == 113) && ((DBL_MAX_EXP+0) == 16384) // IEEE 754 binary128 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 16 #elif ((DBL_MANT_DIG+0) == 237) && ((DBL_MAX_EXP+0) == 262144) // IEEE 754 binary256 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 32 #endif #if ((LDBL_MANT_DIG+0) == 11) && ((LDBL_MAX_EXP+0) == 16) // IEEE 754 binary16 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 2 #elif ((LDBL_MANT_DIG+0) == 24) && ((LDBL_MAX_EXP+0) == 128) // IEEE 754 binary32 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 4 #elif ((LDBL_MANT_DIG+0) == 53) && ((LDBL_MAX_EXP+0) == 1024) // IEEE 754 binary64 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 8 #elif ((LDBL_MANT_DIG+0) == 64) && ((LDBL_MAX_EXP+0) == 16384) // x87 extended double #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 10 #elif ((LDBL_MANT_DIG+0) == 106) && ((LDBL_MAX_EXP+0) == 1024) // IBM extended double #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 16 #elif ((LDBL_MANT_DIG+0) == 113) && ((LDBL_MAX_EXP+0) == 16384) // IEEE 754 binary128 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 16 #elif ((LDBL_MANT_DIG+0) == 237) && ((LDBL_MAX_EXP+0) == 262144) // IEEE 754 binary256 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 32 #endif #elif (FLT_RADIX+0) == 10 #if ((FLT_MANT_DIG+0) == 7) && ((FLT_MAX_EXP+0) == 97) // IEEE 754 decimal32 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 4 #elif ((FLT_MANT_DIG+0) == 16) && ((FLT_MAX_EXP+0) == 385) // IEEE 754 decimal64 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 8 #elif ((FLT_MANT_DIG+0) == 34) && ((FLT_MAX_EXP+0) == 6145) // IEEE 754 decimal128 #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE 16 #endif #if ((DBL_MANT_DIG+0) == 7) && ((DBL_MAX_EXP+0) == 97) // IEEE 754 decimal32 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 4 #elif ((DBL_MANT_DIG+0) == 16) && ((DBL_MAX_EXP+0) == 385) // IEEE 754 decimal64 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 8 #elif ((DBL_MANT_DIG+0) == 34) && ((DBL_MAX_EXP+0) == 6145) // IEEE 754 decimal128 #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE 16 #endif #if ((LDBL_MANT_DIG+0) == 7) && ((LDBL_MAX_EXP+0) == 97) // IEEE 754 decimal32 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 4 #elif ((LDBL_MANT_DIG+0) == 16) && ((LDBL_MAX_EXP+0) == 385) // IEEE 754 decimal64 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 8 #elif ((LDBL_MANT_DIG+0) == 34) && ((LDBL_MAX_EXP+0) == 6145) // IEEE 754 decimal128 #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE 16 #endif #endif // GCC and compatible compilers define internal macros with builtin type traits #if defined(__SIZEOF_FLOAT__) #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT __SIZEOF_FLOAT__ #endif #if defined(__SIZEOF_DOUBLE__) #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE __SIZEOF_DOUBLE__ #endif #if defined(__SIZEOF_LONG_DOUBLE__) #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE __SIZEOF_LONG_DOUBLE__ #endif #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE) #define BOOST_ATOMIC_DETAIL_ALIGN_SIZE_TO_POWER_OF_2(x)\ ((x) == 1u ? 1u : ((x) == 2u ? 2u : ((x) <= 4u ? 4u : ((x) <= 8u ? 8u : ((x) <= 16u ? 16u : ((x) <= 32u ? 32u : (x))))))) // Make our best guess. These sizes may not be accurate, but they are good enough to estimate the size of the storage required to hold these types. #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT) && defined(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE) #define BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT BOOST_ATOMIC_DETAIL_ALIGN_SIZE_TO_POWER_OF_2(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE) #endif #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE) && defined(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE) #define BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE BOOST_ATOMIC_DETAIL_ALIGN_SIZE_TO_POWER_OF_2(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE) #endif #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE) && defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE) #define BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE BOOST_ATOMIC_DETAIL_ALIGN_SIZE_TO_POWER_OF_2(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE) #endif #endif // !defined(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE) #if !defined(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT_VALUE) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_FLOAT) ||\ !defined(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE_VALUE) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_DOUBLE) ||\ !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE_VALUE) || !defined(BOOST_ATOMIC_DETAIL_SIZEOF_LONG_DOUBLE) #error Boost.Atomic: Failed to determine builtin floating point type sizes, the target platform is not supported. Please, report to the developers (patches are welcome). #endif #endif // BOOST_ATOMIC_DETAIL_FLOAT_SIZES_HPP_INCLUDED_