Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 1 | /*===---- float.h - Characteristics of floating point types ----------------=== |
| 2 | * |
Logan Chien | df4f766 | 2019-09-04 16:45:23 -0700 | [diff] [blame] | 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 |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 6 | * |
| 7 | *===-----------------------------------------------------------------------=== |
| 8 | */ |
| 9 | |
Logan Chien | 55afb0a | 2018-10-15 10:42:14 +0800 | [diff] [blame] | 10 | #ifndef __CLANG_FLOAT_H |
| 11 | #define __CLANG_FLOAT_H |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 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 |
Logan Chien | 55afb0a | 2018-10-15 10:42:14 +0800 | [diff] [blame] | 16 | * |
| 17 | * Also fall back on Darwin to allow additional definitions and |
| 18 | * implementation-defined values. |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 19 | */ |
Logan Chien | 55afb0a | 2018-10-15 10:42:14 +0800 | [diff] [blame] | 20 | #if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \ |
| 21 | __STDC_HOSTED__ && __has_include_next(<float.h>) |
| 22 | |
| 23 | /* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level |
| 24 | * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this |
| 25 | * extra indirection. |
| 26 | */ |
| 27 | #ifdef __APPLE__ |
| 28 | #define _FLOAT_H_ |
| 29 | #endif |
| 30 | |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 31 | # include_next <float.h> |
| 32 | |
| 33 | /* Undefine anything that we'll be redefining below. */ |
| 34 | # undef FLT_EVAL_METHOD |
| 35 | # undef FLT_ROUNDS |
| 36 | # undef FLT_RADIX |
| 37 | # undef FLT_MANT_DIG |
| 38 | # undef DBL_MANT_DIG |
| 39 | # undef LDBL_MANT_DIG |
Logan Chien | dbcf412 | 2019-03-21 10:50:25 +0800 | [diff] [blame] | 40 | # if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 41 | # undef DECIMAL_DIG |
| 42 | # endif |
| 43 | # undef FLT_DIG |
| 44 | # undef DBL_DIG |
| 45 | # undef LDBL_DIG |
| 46 | # undef FLT_MIN_EXP |
| 47 | # undef DBL_MIN_EXP |
| 48 | # undef LDBL_MIN_EXP |
| 49 | # undef FLT_MIN_10_EXP |
| 50 | # undef DBL_MIN_10_EXP |
| 51 | # undef LDBL_MIN_10_EXP |
| 52 | # undef FLT_MAX_EXP |
| 53 | # undef DBL_MAX_EXP |
| 54 | # undef LDBL_MAX_EXP |
| 55 | # undef FLT_MAX_10_EXP |
| 56 | # undef DBL_MAX_10_EXP |
| 57 | # undef LDBL_MAX_10_EXP |
| 58 | # undef FLT_MAX |
| 59 | # undef DBL_MAX |
| 60 | # undef LDBL_MAX |
| 61 | # undef FLT_EPSILON |
| 62 | # undef DBL_EPSILON |
| 63 | # undef LDBL_EPSILON |
| 64 | # undef FLT_MIN |
| 65 | # undef DBL_MIN |
| 66 | # undef LDBL_MIN |
Logan Chien | df4f766 | 2019-09-04 16:45:23 -0700 | [diff] [blame] | 67 | # if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 68 | # undef FLT_TRUE_MIN |
| 69 | # undef DBL_TRUE_MIN |
| 70 | # undef LDBL_TRUE_MIN |
| 71 | # undef FLT_DECIMAL_DIG |
| 72 | # undef DBL_DECIMAL_DIG |
| 73 | # undef LDBL_DECIMAL_DIG |
Logan Chien | 55afb0a | 2018-10-15 10:42:14 +0800 | [diff] [blame] | 74 | # undef FLT_HAS_SUBNORM |
| 75 | # undef DBL_HAS_SUBNORM |
| 76 | # undef LDBL_HAS_SUBNORM |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 77 | # endif |
| 78 | #endif |
| 79 | |
| 80 | /* Characteristics of floating point types, C99 5.2.4.2.2 */ |
| 81 | |
| 82 | #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
| 83 | #define FLT_ROUNDS (__builtin_flt_rounds()) |
| 84 | #define FLT_RADIX __FLT_RADIX__ |
| 85 | |
| 86 | #define FLT_MANT_DIG __FLT_MANT_DIG__ |
| 87 | #define DBL_MANT_DIG __DBL_MANT_DIG__ |
| 88 | #define LDBL_MANT_DIG __LDBL_MANT_DIG__ |
| 89 | |
Logan Chien | dbcf412 | 2019-03-21 10:50:25 +0800 | [diff] [blame] | 90 | #if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 91 | # define DECIMAL_DIG __DECIMAL_DIG__ |
| 92 | #endif |
| 93 | |
| 94 | #define FLT_DIG __FLT_DIG__ |
| 95 | #define DBL_DIG __DBL_DIG__ |
| 96 | #define LDBL_DIG __LDBL_DIG__ |
| 97 | |
| 98 | #define FLT_MIN_EXP __FLT_MIN_EXP__ |
| 99 | #define DBL_MIN_EXP __DBL_MIN_EXP__ |
| 100 | #define LDBL_MIN_EXP __LDBL_MIN_EXP__ |
| 101 | |
| 102 | #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ |
| 103 | #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ |
| 104 | #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ |
| 105 | |
| 106 | #define FLT_MAX_EXP __FLT_MAX_EXP__ |
| 107 | #define DBL_MAX_EXP __DBL_MAX_EXP__ |
| 108 | #define LDBL_MAX_EXP __LDBL_MAX_EXP__ |
| 109 | |
| 110 | #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ |
| 111 | #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ |
| 112 | #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ |
| 113 | |
| 114 | #define FLT_MAX __FLT_MAX__ |
| 115 | #define DBL_MAX __DBL_MAX__ |
| 116 | #define LDBL_MAX __LDBL_MAX__ |
| 117 | |
| 118 | #define FLT_EPSILON __FLT_EPSILON__ |
| 119 | #define DBL_EPSILON __DBL_EPSILON__ |
| 120 | #define LDBL_EPSILON __LDBL_EPSILON__ |
| 121 | |
| 122 | #define FLT_MIN __FLT_MIN__ |
| 123 | #define DBL_MIN __DBL_MIN__ |
| 124 | #define LDBL_MIN __LDBL_MIN__ |
| 125 | |
Logan Chien | df4f766 | 2019-09-04 16:45:23 -0700 | [diff] [blame] | 126 | #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 127 | # define FLT_TRUE_MIN __FLT_DENORM_MIN__ |
| 128 | # define DBL_TRUE_MIN __DBL_DENORM_MIN__ |
| 129 | # define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ |
| 130 | # define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ |
| 131 | # define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ |
| 132 | # define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ |
Logan Chien | 55afb0a | 2018-10-15 10:42:14 +0800 | [diff] [blame] | 133 | # define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ |
| 134 | # define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ |
| 135 | # define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ |
Logan Chien | 2833ffb | 2018-10-09 10:03:24 +0800 | [diff] [blame] | 136 | #endif |
| 137 | |
Logan Chien | 55afb0a | 2018-10-15 10:42:14 +0800 | [diff] [blame] | 138 | #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
| 139 | # define FLT16_MANT_DIG __FLT16_MANT_DIG__ |
| 140 | # define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ |
| 141 | # define FLT16_DIG __FLT16_DIG__ |
| 142 | # define FLT16_MIN_EXP __FLT16_MIN_EXP__ |
| 143 | # define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ |
| 144 | # define FLT16_MAX_EXP __FLT16_MAX_EXP__ |
| 145 | # define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ |
| 146 | # define FLT16_MAX __FLT16_MAX__ |
| 147 | # define FLT16_EPSILON __FLT16_EPSILON__ |
| 148 | # define FLT16_MIN __FLT16_MIN__ |
| 149 | # define FLT16_TRUE_MIN __FLT16_TRUE_MIN__ |
| 150 | #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */ |
| 151 | |
| 152 | #endif /* __CLANG_FLOAT_H */ |