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__) || defined(_MSC_VER)) && __STDC_HOSTED__ && \ 32 __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# if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) 43# undef DECIMAL_DIG 44# endif 45# undef FLT_DIG 46# undef DBL_DIG 47# undef LDBL_DIG 48# undef FLT_MIN_EXP 49# undef DBL_MIN_EXP 50# undef LDBL_MIN_EXP 51# undef FLT_MIN_10_EXP 52# undef DBL_MIN_10_EXP 53# undef LDBL_MIN_10_EXP 54# undef FLT_MAX_EXP 55# undef DBL_MAX_EXP 56# undef LDBL_MAX_EXP 57# undef FLT_MAX_10_EXP 58# undef DBL_MAX_10_EXP 59# undef LDBL_MAX_10_EXP 60# undef FLT_MAX 61# undef DBL_MAX 62# undef LDBL_MAX 63# undef FLT_EPSILON 64# undef DBL_EPSILON 65# undef LDBL_EPSILON 66# undef FLT_MIN 67# undef DBL_MIN 68# undef LDBL_MIN 69# if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 70# undef FLT_TRUE_MIN 71# undef DBL_TRUE_MIN 72# undef LDBL_TRUE_MIN 73# undef FLT_DECIMAL_DIG 74# undef DBL_DECIMAL_DIG 75# undef LDBL_DECIMAL_DIG 76# endif 77#endif 78 79/* Characteristics of floating point types, C99 5.2.4.2.2 */ 80 81#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 82#define FLT_ROUNDS (__builtin_flt_rounds()) 83#define FLT_RADIX __FLT_RADIX__ 84 85#define FLT_MANT_DIG __FLT_MANT_DIG__ 86#define DBL_MANT_DIG __DBL_MANT_DIG__ 87#define LDBL_MANT_DIG __LDBL_MANT_DIG__ 88 89#if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) 90# define DECIMAL_DIG __DECIMAL_DIG__ 91#endif 92 93#define FLT_DIG __FLT_DIG__ 94#define DBL_DIG __DBL_DIG__ 95#define LDBL_DIG __LDBL_DIG__ 96 97#define FLT_MIN_EXP __FLT_MIN_EXP__ 98#define DBL_MIN_EXP __DBL_MIN_EXP__ 99#define LDBL_MIN_EXP __LDBL_MIN_EXP__ 100 101#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 102#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 103#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 104 105#define FLT_MAX_EXP __FLT_MAX_EXP__ 106#define DBL_MAX_EXP __DBL_MAX_EXP__ 107#define LDBL_MAX_EXP __LDBL_MAX_EXP__ 108 109#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 110#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 111#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 112 113#define FLT_MAX __FLT_MAX__ 114#define DBL_MAX __DBL_MAX__ 115#define LDBL_MAX __LDBL_MAX__ 116 117#define FLT_EPSILON __FLT_EPSILON__ 118#define DBL_EPSILON __DBL_EPSILON__ 119#define LDBL_EPSILON __LDBL_EPSILON__ 120 121#define FLT_MIN __FLT_MIN__ 122#define DBL_MIN __DBL_MIN__ 123#define LDBL_MIN __LDBL_MIN__ 124 125#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 126# define FLT_TRUE_MIN __FLT_DENORM_MIN__ 127# define DBL_TRUE_MIN __DBL_DENORM_MIN__ 128# define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 129# define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ 130# define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ 131# define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ 132#endif 133 134#endif /* __FLOAT_H */ 135