| 1 | /*===---- float.h - Characteristics of floating point types ----------------=== |
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| 2 | * |
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| 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 4 | * of this software and associated documentation files (the "Software"), to deal |
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| 5 | * in the Software without restriction, including without limitation the rights |
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| 6 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 7 | * copies of the Software, and to permit persons to whom the Software is |
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| 8 | * furnished to do so, subject to the following conditions: |
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| 9 | * |
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| 10 | * The above copyright notice and this permission notice shall be included in |
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| 11 | * all copies or substantial portions of the Software. |
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| 12 | * |
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| 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 18 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 19 | * THE SOFTWARE. |
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| 20 | * |
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| 21 | *===-----------------------------------------------------------------------=== |
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| 22 | */ |
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| 23 | |
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| 24 | #ifndef __CLANG_FLOAT_H |
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| 25 | #define __CLANG_FLOAT_H |
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| 26 | |
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| 27 | /* If we're on MinGW, fall back to the system's float.h, which might have |
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| 28 | * additional definitions provided for Windows. |
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| 29 | * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx |
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| 30 | * |
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| 31 | * Also fall back on Darwin to allow additional definitions and |
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| 32 | * implementation-defined values. |
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| 33 | */ |
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| 34 | #if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \ |
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| 35 | __STDC_HOSTED__ && __has_include_next(<float.h>) |
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| 36 | |
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| 37 | /* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level |
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| 38 | * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this |
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| 39 | * extra indirection. |
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| 40 | */ |
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| 41 | #ifdef __APPLE__ |
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| 42 | #define _FLOAT_H_ |
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| 43 | #endif |
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| 44 | |
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| 45 | # include_next <float.h> |
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| 46 | |
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| 47 | /* Undefine anything that we'll be redefining below. */ |
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| 48 | # undef FLT_EVAL_METHOD |
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| 49 | # undef FLT_ROUNDS |
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| 50 | # undef FLT_RADIX |
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| 51 | # undef FLT_MANT_DIG |
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| 52 | # undef DBL_MANT_DIG |
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| 53 | # undef LDBL_MANT_DIG |
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| 54 | # if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L |
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| 55 | # undef DECIMAL_DIG |
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| 56 | # endif |
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| 57 | # undef FLT_DIG |
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| 58 | # undef DBL_DIG |
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| 59 | # undef LDBL_DIG |
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| 60 | # undef FLT_MIN_EXP |
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| 61 | # undef DBL_MIN_EXP |
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| 62 | # undef LDBL_MIN_EXP |
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| 63 | # undef FLT_MIN_10_EXP |
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| 64 | # undef DBL_MIN_10_EXP |
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| 65 | # undef LDBL_MIN_10_EXP |
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| 66 | # undef FLT_MAX_EXP |
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| 67 | # undef DBL_MAX_EXP |
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| 68 | # undef LDBL_MAX_EXP |
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| 69 | # undef FLT_MAX_10_EXP |
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| 70 | # undef DBL_MAX_10_EXP |
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| 71 | # undef LDBL_MAX_10_EXP |
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| 72 | # undef FLT_MAX |
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| 73 | # undef DBL_MAX |
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| 74 | # undef LDBL_MAX |
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| 75 | # undef FLT_EPSILON |
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| 76 | # undef DBL_EPSILON |
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| 77 | # undef LDBL_EPSILON |
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| 78 | # undef FLT_MIN |
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| 79 | # undef DBL_MIN |
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| 80 | # undef LDBL_MIN |
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| 81 | # if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L |
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| 82 | # undef FLT_TRUE_MIN |
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| 83 | # undef DBL_TRUE_MIN |
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| 84 | # undef LDBL_TRUE_MIN |
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| 85 | # undef FLT_DECIMAL_DIG |
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| 86 | # undef DBL_DECIMAL_DIG |
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| 87 | # undef LDBL_DECIMAL_DIG |
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| 88 | # undef FLT_HAS_SUBNORM |
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| 89 | # undef DBL_HAS_SUBNORM |
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| 90 | # undef LDBL_HAS_SUBNORM |
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| 91 | # endif |
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| 92 | #endif |
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| 93 | |
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| 94 | /* Characteristics of floating point types, C99 5.2.4.2.2 */ |
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| 95 | |
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| 96 | #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
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| 97 | #define FLT_ROUNDS (__builtin_flt_rounds()) |
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| 98 | #define FLT_RADIX __FLT_RADIX__ |
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| 99 | |
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| 100 | #define FLT_MANT_DIG __FLT_MANT_DIG__ |
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| 101 | #define DBL_MANT_DIG __DBL_MANT_DIG__ |
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| 102 | #define LDBL_MANT_DIG __LDBL_MANT_DIG__ |
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| 103 | |
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| 104 | #if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L |
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| 105 | # define DECIMAL_DIG __DECIMAL_DIG__ |
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| 106 | #endif |
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| 107 | |
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| 108 | #define FLT_DIG __FLT_DIG__ |
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| 109 | #define DBL_DIG __DBL_DIG__ |
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| 110 | #define LDBL_DIG __LDBL_DIG__ |
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| 111 | |
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| 112 | #define FLT_MIN_EXP __FLT_MIN_EXP__ |
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| 113 | #define DBL_MIN_EXP __DBL_MIN_EXP__ |
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| 114 | #define LDBL_MIN_EXP __LDBL_MIN_EXP__ |
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| 115 | |
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| 116 | #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ |
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| 117 | #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ |
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| 118 | #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ |
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| 119 | |
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| 120 | #define FLT_MAX_EXP __FLT_MAX_EXP__ |
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| 121 | #define DBL_MAX_EXP __DBL_MAX_EXP__ |
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| 122 | #define LDBL_MAX_EXP __LDBL_MAX_EXP__ |
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| 123 | |
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| 124 | #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ |
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| 125 | #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ |
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| 126 | #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ |
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| 127 | |
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| 128 | #define FLT_MAX __FLT_MAX__ |
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| 129 | #define DBL_MAX __DBL_MAX__ |
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| 130 | #define LDBL_MAX __LDBL_MAX__ |
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| 131 | |
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| 132 | #define FLT_EPSILON __FLT_EPSILON__ |
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| 133 | #define DBL_EPSILON __DBL_EPSILON__ |
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| 134 | #define LDBL_EPSILON __LDBL_EPSILON__ |
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| 135 | |
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| 136 | #define FLT_MIN __FLT_MIN__ |
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| 137 | #define DBL_MIN __DBL_MIN__ |
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| 138 | #define LDBL_MIN __LDBL_MIN__ |
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| 139 | |
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| 140 | #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L |
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| 141 | # define FLT_TRUE_MIN __FLT_DENORM_MIN__ |
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| 142 | # define DBL_TRUE_MIN __DBL_DENORM_MIN__ |
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| 143 | # define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ |
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| 144 | # define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ |
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| 145 | # define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ |
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| 146 | # define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ |
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| 147 | # define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ |
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| 148 | # define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ |
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| 149 | # define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ |
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| 150 | #endif |
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| 151 | |
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| 152 | #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ |
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| 153 | # define FLT16_MANT_DIG __FLT16_MANT_DIG__ |
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| 154 | # define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ |
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| 155 | # define FLT16_DIG __FLT16_DIG__ |
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| 156 | # define FLT16_MIN_EXP __FLT16_MIN_EXP__ |
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| 157 | # define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ |
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| 158 | # define FLT16_MAX_EXP __FLT16_MAX_EXP__ |
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| 159 | # define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ |
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| 160 | # define FLT16_MAX __FLT16_MAX__ |
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| 161 | # define FLT16_EPSILON __FLT16_EPSILON__ |
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| 162 | # define FLT16_MIN __FLT16_MIN__ |
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| 163 | # define FLT16_TRUE_MIN __FLT16_TRUE_MIN__ |
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| 164 | #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */ |
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| 165 | |
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| 166 | #endif /* __CLANG_FLOAT_H */ |
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| 167 | |
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