| xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame^] | 1 | /* Enable floating-point exceptions. |
| 2 | Copyright (C) 2000-2016 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | Contributed by Jakub Jelinek <jakub@redhat.com>, 2000. |
| 5 | |
| 6 | The GNU C Library is free software; you can redistribute it and/or |
| 7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either |
| 9 | version 2.1 of the License, or (at your option) any later version. |
| 10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | Lesser General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU Lesser General Public |
| 17 | License along with the GNU C Library; if not, see |
| 18 | <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include <fenv.h> |
| 21 | |
| 22 | int |
| 23 | feenableexcept (int excepts) |
| 24 | { |
| 25 | fenv_t new_exc, old_exc; |
| 26 | |
| 27 | __fenv_stfsr (new_exc); |
| 28 | |
| 29 | old_exc = (new_exc >> 18) & FE_ALL_EXCEPT; |
| 30 | new_exc |= (((fenv_t)excepts & FE_ALL_EXCEPT) << 18); |
| 31 | |
| 32 | __fenv_ldfsr (new_exc); |
| 33 | |
| 34 | return old_exc; |
| 35 | } |