float.h revision 234353
1193326Sed/*===---- float.h - Characteristics of floating point types ----------------=== 2193326Sed * 3193326Sed * Permission is hereby granted, free of charge, to any person obtaining a copy 4193326Sed * of this software and associated documentation files (the "Software"), to deal 5193326Sed * in the Software without restriction, including without limitation the rights 6193326Sed * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7193326Sed * copies of the Software, and to permit persons to whom the Software is 8193326Sed * furnished to do so, subject to the following conditions: 9193326Sed * 10193326Sed * The above copyright notice and this permission notice shall be included in 11193326Sed * all copies or substantial portions of the Software. 12193326Sed * 13193326Sed * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14193326Sed * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15193326Sed * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16193326Sed * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17193326Sed * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18193326Sed * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19193326Sed * THE SOFTWARE. 20193326Sed * 21193326Sed *===-----------------------------------------------------------------------=== 22193326Sed */ 23193326Sed 24193326Sed#ifndef __FLOAT_H 25193326Sed#define __FLOAT_H 26193326Sed 27226633Sdim/* If we're on MinGW, fall back to the system's float.h, which might have 28224145Sdim * additional definitions provided for Windows. 29224145Sdim * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx 30224145Sdim */ 31224145Sdim#if defined(__MINGW32__) && \ 32224145Sdim defined(__has_include_next) && __has_include_next(<float.h>) 33224145Sdim# include_next <float.h> 34224145Sdim 35224145Sdim/* Undefine anything that we'll be redefining below. */ 36224145Sdim# undef FLT_EVAL_METHOD 37224145Sdim# undef FLT_ROUNDS 38224145Sdim# undef FLT_RADIX 39224145Sdim# undef FLT_MANT_DIG 40224145Sdim# undef DBL_MANT_DIG 41224145Sdim# undef LDBL_MANT_DIG 42224145Sdim# undef DECIMAL_DIG 43224145Sdim# undef FLT_DIG 44224145Sdim# undef DBL_DIG 45224145Sdim# undef LDBL_DIG 46224145Sdim# undef FLT_MIN_EXP 47224145Sdim# undef DBL_MIN_EXP 48224145Sdim# undef LDBL_MIN_EXP 49224145Sdim# undef FLT_MIN_10_EXP 50224145Sdim# undef DBL_MIN_10_EXP 51224145Sdim# undef LDBL_MIN_10_EXP 52224145Sdim# undef FLT_MAX_EXP 53224145Sdim# undef DBL_MAX_EXP 54224145Sdim# undef LDBL_MAX_EXP 55224145Sdim# undef FLT_MAX_10_EXP 56224145Sdim# undef DBL_MAX_10_EXP 57224145Sdim# undef LDBL_MAX_10_EXP 58224145Sdim# undef FLT_MAX 59224145Sdim# undef DBL_MAX 60224145Sdim# undef LDBL_MAX 61224145Sdim# undef FLT_EPSILON 62224145Sdim# undef DBL_EPSILON 63224145Sdim# undef LDBL_EPSILON 64224145Sdim# undef FLT_MIN 65224145Sdim# undef DBL_MIN 66224145Sdim# undef LDBL_MIN 67234353Sdim# if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 68234353Sdim# undef FLT_TRUE_MIN 69234353Sdim# undef DBL_TRUE_MIN 70234353Sdim# undef LDBL_TRUE_MIN 71234353Sdim# endif 72224145Sdim#endif 73224145Sdim 74193326Sed/* Characteristics of floating point types, C99 5.2.4.2.2 */ 75193326Sed 76193326Sed#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 77193326Sed#define FLT_ROUNDS (__builtin_flt_rounds()) 78193326Sed#define FLT_RADIX __FLT_RADIX__ 79193326Sed 80193326Sed#define FLT_MANT_DIG __FLT_MANT_DIG__ 81193326Sed#define DBL_MANT_DIG __DBL_MANT_DIG__ 82193326Sed#define LDBL_MANT_DIG __LDBL_MANT_DIG__ 83193326Sed 84193326Sed#define DECIMAL_DIG __DECIMAL_DIG__ 85193326Sed 86193326Sed#define FLT_DIG __FLT_DIG__ 87193326Sed#define DBL_DIG __DBL_DIG__ 88193326Sed#define LDBL_DIG __LDBL_DIG__ 89193326Sed 90193326Sed#define FLT_MIN_EXP __FLT_MIN_EXP__ 91193326Sed#define DBL_MIN_EXP __DBL_MIN_EXP__ 92193326Sed#define LDBL_MIN_EXP __LDBL_MIN_EXP__ 93193326Sed 94193326Sed#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 95193326Sed#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 96193326Sed#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 97193326Sed 98193326Sed#define FLT_MAX_EXP __FLT_MAX_EXP__ 99193326Sed#define DBL_MAX_EXP __DBL_MAX_EXP__ 100193326Sed#define LDBL_MAX_EXP __LDBL_MAX_EXP__ 101193326Sed 102193326Sed#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 103193326Sed#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 104193326Sed#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 105193326Sed 106193326Sed#define FLT_MAX __FLT_MAX__ 107193326Sed#define DBL_MAX __DBL_MAX__ 108193326Sed#define LDBL_MAX __LDBL_MAX__ 109193326Sed 110193326Sed#define FLT_EPSILON __FLT_EPSILON__ 111193326Sed#define DBL_EPSILON __DBL_EPSILON__ 112193326Sed#define LDBL_EPSILON __LDBL_EPSILON__ 113193326Sed 114193326Sed#define FLT_MIN __FLT_MIN__ 115193326Sed#define DBL_MIN __DBL_MIN__ 116193326Sed#define LDBL_MIN __LDBL_MIN__ 117193326Sed 118234353Sdim#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) 119234353Sdim# define FLT_TRUE_MIN __FLT_DENORM_MIN__ 120234353Sdim# define DBL_TRUE_MIN __DBL_DENORM_MIN__ 121234353Sdim# define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 122234353Sdim#endif 123234353Sdim 124193326Sed#endif /* __FLOAT_H */ 125