| /* Define __GLIBC_FLT_EVAL_METHOD. |
| Copyright (C) 2016-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _MATH_H |
| # error "Never use <bits/flt-eval-method.h> directly; include <math.h> instead." |
| #endif |
| |
| /* __GLIBC_FLT_EVAL_METHOD is the value of FLT_EVAL_METHOD used to |
| determine the evaluation method typedefs such as float_t and |
| double_t. It must be a value from C11 or TS 18661-3:2015, and not |
| -1. */ |
| |
| /* In the default version of this header, follow __FLT_EVAL_METHOD__. |
| -1 is mapped to 2 (considering evaluation as long double to be a |
| conservatively safe assumption), and if __FLT_EVAL_METHOD__ is not |
| defined then assume there is no excess precision and use the value |
| 0. */ |
| |
| #ifdef __FLT_EVAL_METHOD__ |
| # if __FLT_EVAL_METHOD__ == -1 |
| # define __GLIBC_FLT_EVAL_METHOD 2 |
| # else |
| # define __GLIBC_FLT_EVAL_METHOD __FLT_EVAL_METHOD__ |
| # endif |
| #else |
| # define __GLIBC_FLT_EVAL_METHOD 0 |
| #endif |
