1/*===---- float.h - Characteristics of floating point types ----------------=== 2 * 3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 * See https://llvm.org/LICENSE.txt for license information. 5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 * 7 *===-----------------------------------------------------------------------=== 8 */ 9 10#ifndef __CLANG_FLOAT_H 11#define __CLANG_FLOAT_H 12 13/* If we're on MinGW, fall back to the system's float.h, which might have 14 * additional definitions provided for Windows. 15 * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx 16 * 17 * Also fall back on Darwin and AIX to allow additional definitions and 18 * implementation-defined values. 19 */ 20#if (defined(__APPLE__) || defined(__MINGW32__) || defined(_MSC_VER) || \ 21 defined(_AIX)) && \ 22 __STDC_HOSTED__ && __has_include_next(<float.h>) 23 24/* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level 25 * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this 26 * extra indirection. 27 */ 28#ifdef __APPLE__ 29#define _FLOAT_H_ 30#endif 31 32# include_next <float.h> 33 34/* Undefine anything that we'll be redefining below. */ 35# undef FLT_EVAL_METHOD 36# undef FLT_ROUNDS 37# undef FLT_RADIX 38# undef FLT_MANT_DIG 39# undef DBL_MANT_DIG 40# undef LDBL_MANT_DIG 41#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ 42 !defined(__STRICT_ANSI__) || \ 43 (defined(__cplusplus) && __cplusplus >= 201103L) || \ 44 (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) 45# undef DECIMAL_DIG 46# endif 47# undef FLT_DIG 48# undef DBL_DIG 49# undef LDBL_DIG 50# undef FLT_MIN_EXP 51# undef DBL_MIN_EXP 52# undef LDBL_MIN_EXP 53# undef FLT_MIN_10_EXP 54# undef DBL_MIN_10_EXP 55# undef LDBL_MIN_10_EXP 56# undef FLT_MAX_EXP 57# undef DBL_MAX_EXP 58# undef LDBL_MAX_EXP 59# undef FLT_MAX_10_EXP 60# undef DBL_MAX_10_EXP 61# undef LDBL_MAX_10_EXP 62# undef FLT_MAX 63# undef DBL_MAX 64# undef LDBL_MAX 65# undef FLT_EPSILON 66# undef DBL_EPSILON 67# undef LDBL_EPSILON 68# undef FLT_MIN 69# undef DBL_MIN 70# undef LDBL_MIN 71#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \ 72 !defined(__STRICT_ANSI__) || \ 73 (defined(__cplusplus) && __cplusplus >= 201703L) || \ 74 (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) 75# undef FLT_TRUE_MIN 76# undef DBL_TRUE_MIN 77# undef LDBL_TRUE_MIN 78# undef FLT_DECIMAL_DIG 79# undef DBL_DECIMAL_DIG 80# undef LDBL_DECIMAL_DIG 81# undef FLT_HAS_SUBNORM 82# undef DBL_HAS_SUBNORM 83# undef LDBL_HAS_SUBNORM 84# endif 85#endif 86 87/* Characteristics of floating point types, C99 5.2.4.2.2 */ 88 89#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ 90 (defined(__cplusplus) && __cplusplus >= 201103L) 91#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 92#endif 93#define FLT_ROUNDS (__builtin_flt_rounds()) 94#define FLT_RADIX __FLT_RADIX__ 95 96#define FLT_MANT_DIG __FLT_MANT_DIG__ 97#define DBL_MANT_DIG __DBL_MANT_DIG__ 98#define LDBL_MANT_DIG __LDBL_MANT_DIG__ 99 100#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \ 101 !defined(__STRICT_ANSI__) || \ 102 (defined(__cplusplus) && __cplusplus >= 201103L) || \ 103 (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) 104# define DECIMAL_DIG __DECIMAL_DIG__ 105#endif 106 107#define FLT_DIG __FLT_DIG__ 108#define DBL_DIG __DBL_DIG__ 109#define LDBL_DIG __LDBL_DIG__ 110 111#define FLT_MIN_EXP __FLT_MIN_EXP__ 112#define DBL_MIN_EXP __DBL_MIN_EXP__ 113#define LDBL_MIN_EXP __LDBL_MIN_EXP__ 114 115#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 116#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 117#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 118 119#define FLT_MAX_EXP __FLT_MAX_EXP__ 120#define DBL_MAX_EXP __DBL_MAX_EXP__ 121#define LDBL_MAX_EXP __LDBL_MAX_EXP__ 122 123#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 124#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 125#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 126 127#define FLT_MAX __FLT_MAX__ 128#define DBL_MAX __DBL_MAX__ 129#define LDBL_MAX __LDBL_MAX__ 130 131#define FLT_EPSILON __FLT_EPSILON__ 132#define DBL_EPSILON __DBL_EPSILON__ 133#define LDBL_EPSILON __LDBL_EPSILON__ 134 135#define FLT_MIN __FLT_MIN__ 136#define DBL_MIN __DBL_MIN__ 137#define LDBL_MIN __LDBL_MIN__ 138 139#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \ 140 !defined(__STRICT_ANSI__) || \ 141 (defined(__cplusplus) && __cplusplus >= 201703L) || \ 142 (__STDC_HOSTED__ && defined(_AIX) && defined(_ALL_SOURCE)) 143# define FLT_TRUE_MIN __FLT_DENORM_MIN__ 144# define DBL_TRUE_MIN __DBL_DENORM_MIN__ 145# define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 146# define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ 147# define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ 148# define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ 149# define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ 150# define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ 151# define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ 152#endif 153 154#ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ 155# define FLT16_MANT_DIG __FLT16_MANT_DIG__ 156# define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ 157# define FLT16_DIG __FLT16_DIG__ 158# define FLT16_MIN_EXP __FLT16_MIN_EXP__ 159# define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ 160# define FLT16_MAX_EXP __FLT16_MAX_EXP__ 161# define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ 162# define FLT16_MAX __FLT16_MAX__ 163# define FLT16_EPSILON __FLT16_EPSILON__ 164# define FLT16_MIN __FLT16_MIN__ 165# define FLT16_TRUE_MIN __FLT16_TRUE_MIN__ 166#endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */ 167 168#endif /* __CLANG_FLOAT_H */ 169