]>
Commit | Line | Data |
---|---|---|
93eb85ce | 1 | /* Define __GLIBC_FLT_EVAL_METHOD. |
04277e02 | 2 | Copyright (C) 2016-2019 Free Software Foundation, Inc. |
93eb85ce JM |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #ifndef _MATH_H | |
20 | # error "Never use <bits/flt-eval-method.h> directly; include <math.h> instead." | |
21 | #endif | |
22 | ||
23 | /* __GLIBC_FLT_EVAL_METHOD is the value of FLT_EVAL_METHOD used to | |
24 | determine the evaluation method typedefs such as float_t and | |
25 | double_t. It must be a value from C11 or TS 18661-3:2015, and not | |
26 | -1. */ | |
27 | ||
28 | /* In the default version of this header, follow __FLT_EVAL_METHOD__. | |
29 | -1 is mapped to 2 (considering evaluation as long double to be a | |
30 | conservatively safe assumption), and if __FLT_EVAL_METHOD__ is not | |
31 | defined then assume there is no excess precision and use the value | |
32 | 0. */ | |
33 | ||
34 | #ifdef __FLT_EVAL_METHOD__ | |
35 | # if __FLT_EVAL_METHOD__ == -1 | |
36 | # define __GLIBC_FLT_EVAL_METHOD 2 | |
37 | # else | |
38 | # define __GLIBC_FLT_EVAL_METHOD __FLT_EVAL_METHOD__ | |
39 | # endif | |
40 | #else | |
41 | # define __GLIBC_FLT_EVAL_METHOD 0 | |
42 | #endif |