| 1 | /* Copyright (C) 2001-2016 Free Software Foundation, Inc. |
|---|---|
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #if !defined _MATH_H && !defined _COMPLEX_H |
| 19 | # error "Never use <bits/mathdef.h> directly; include <math.h> instead" |
| 20 | #endif |
| 21 | |
| 22 | #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF |
| 23 | # define _MATH_H_MATHDEF 1 |
| 24 | |
| 25 | # if defined __x86_64__ || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0) |
| 26 | /* The x86-64 architecture computes values with the precission of the |
| 27 | used type. Similarly for -m32 -mfpmath=sse. */ |
| 28 | typedef float float_t; /* `float' expressions are evaluated as `float'. */ |
| 29 | typedef double double_t; /* `double' expressions are evaluated |
| 30 | as `double'. */ |
| 31 | # else |
| 32 | /* The ix87 FPUs evaluate all values in the 80 bit floating-point format |
| 33 | which is also available for the user as `long double'. Therefore we |
| 34 | define: */ |
| 35 | typedef long double float_t; /* `float' expressions are evaluated as |
| 36 | `long double'. */ |
| 37 | typedef long double double_t; /* `double' expressions are evaluated as |
| 38 | `long double'. */ |
| 39 | # endif |
| 40 | |
| 41 | /* The values returned by `ilogb' for 0 and NaN respectively. */ |
| 42 | # define FP_ILOGB0 (-2147483647 - 1) |
| 43 | # define FP_ILOGBNAN (-2147483647 - 1) |
| 44 | |
| 45 | /* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l} |
| 46 | builtins are supported. */ |
| 47 | # ifdef __FP_FAST_FMA |
| 48 | # define FP_FAST_FMA 1 |
| 49 | # endif |
| 50 | |
| 51 | # ifdef __FP_FAST_FMAF |
| 52 | # define FP_FAST_FMAF 1 |
| 53 | # endif |
| 54 | |
| 55 | # ifdef __FP_FAST_FMAL |
| 56 | # define FP_FAST_FMAL 1 |
| 57 | # endif |
| 58 | |
| 59 | #endif /* ISO C99 */ |
| 60 |