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1 | /* Enable floating-point exceptions. | |
2 | Copyright (C) 2000-2014 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 | } |