1 /*===---- float.h - Characteristics of floating point types ----------------=== 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to deal 5 * in the Software without restriction, including without limitation the rights 6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 * copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 * THE SOFTWARE. 20 * 21 *===-----------------------------------------------------------------------=== 22 */ 23 24 #ifndef __FLOAT_H 25 #define __FLOAT_H 26 27 /* If we're on MinGW, fall back to the system's float.h, which might have 28 * additional definitions provided for Windows. 29 * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx 30 */ 31 #if defined(__MINGW32__) && \ 32 defined(__has_include_next) && __has_include_next(<float.h>) 33 # include_next <float.h> 34 35 /* Undefine anything that we'll be redefining below. */ 36 # undef FLT_EVAL_METHOD 37 # undef FLT_ROUNDS 38 # undef FLT_RADIX 39 # undef FLT_MANT_DIG 40 # undef DBL_MANT_DIG 41 # undef LDBL_MANT_DIG 42 # undef DECIMAL_DIG 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 67 #endif 68 69 /* Characteristics of floating point types, C99 5.2.4.2.2 */ 70 71 #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 72 #define FLT_ROUNDS (__builtin_flt_rounds()) 73 #define FLT_RADIX __FLT_RADIX__ 74 75 #define FLT_MANT_DIG __FLT_MANT_DIG__ 76 #define DBL_MANT_DIG __DBL_MANT_DIG__ 77 #define LDBL_MANT_DIG __LDBL_MANT_DIG__ 78 79 #define DECIMAL_DIG __DECIMAL_DIG__ 80 81 #define FLT_DIG __FLT_DIG__ 82 #define DBL_DIG __DBL_DIG__ 83 #define LDBL_DIG __LDBL_DIG__ 84 85 #define FLT_MIN_EXP __FLT_MIN_EXP__ 86 #define DBL_MIN_EXP __DBL_MIN_EXP__ 87 #define LDBL_MIN_EXP __LDBL_MIN_EXP__ 88 89 #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 90 #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 91 #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 92 93 #define FLT_MAX_EXP __FLT_MAX_EXP__ 94 #define DBL_MAX_EXP __DBL_MAX_EXP__ 95 #define LDBL_MAX_EXP __LDBL_MAX_EXP__ 96 97 #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 98 #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 99 #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 100 101 #define FLT_MAX __FLT_MAX__ 102 #define DBL_MAX __DBL_MAX__ 103 #define LDBL_MAX __LDBL_MAX__ 104 105 #define FLT_EPSILON __FLT_EPSILON__ 106 #define DBL_EPSILON __DBL_EPSILON__ 107 #define LDBL_EPSILON __LDBL_EPSILON__ 108 109 #define FLT_MIN __FLT_MIN__ 110 #define DBL_MIN __DBL_MIN__ 111 #define LDBL_MIN __LDBL_MIN__ 112 113 #endif /* __FLOAT_H */ 114