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# 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# if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 68# undef FLT_TRUE_MIN 69# undef DBL_TRUE_MIN 70# undef LDBL_TRUE_MIN 71# endif 72#endif 73 74/* Characteristics of floating point types, C99 5.2.4.2.2 */ 75 76#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 77#define FLT_ROUNDS (__builtin_flt_rounds()) 78#define FLT_RADIX __FLT_RADIX__ 79 80#define FLT_MANT_DIG __FLT_MANT_DIG__ 81#define DBL_MANT_DIG __DBL_MANT_DIG__ 82#define LDBL_MANT_DIG __LDBL_MANT_DIG__ 83 84#define DECIMAL_DIG __DECIMAL_DIG__ 85 86#define FLT_DIG __FLT_DIG__ 87#define DBL_DIG __DBL_DIG__ 88#define LDBL_DIG __LDBL_DIG__ 89 90#define FLT_MIN_EXP __FLT_MIN_EXP__ 91#define DBL_MIN_EXP __DBL_MIN_EXP__ 92#define LDBL_MIN_EXP __LDBL_MIN_EXP__ 93 94#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 95#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 96#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 97 98#define FLT_MAX_EXP __FLT_MAX_EXP__ 99#define DBL_MAX_EXP __DBL_MAX_EXP__ 100#define LDBL_MAX_EXP __LDBL_MAX_EXP__ 101 102#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 103#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 104#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 105 106#define FLT_MAX __FLT_MAX__ 107#define DBL_MAX __DBL_MAX__ 108#define LDBL_MAX __LDBL_MAX__ 109 110#define FLT_EPSILON __FLT_EPSILON__ 111#define DBL_EPSILON __DBL_EPSILON__ 112#define LDBL_EPSILON __LDBL_EPSILON__ 113 114#define FLT_MIN __FLT_MIN__ 115#define DBL_MIN __DBL_MIN__ 116#define LDBL_MIN __LDBL_MIN__ 117 118#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 119# define FLT_TRUE_MIN __FLT_DENORM_MIN__ 120# define DBL_TRUE_MIN __DBL_DENORM_MIN__ 121# define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 122#endif 123 124#endif /* __FLOAT_H */ 125