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cd290faa | 1 | /* Enable floating-point exceptions. |
688903eb | 2 | Copyright (C) 2000-2018 Free Software Foundation, Inc. |
cd290faa UD |
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 | |
3214b89b AJ |
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. | |
cd290faa UD |
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 | |
3214b89b | 14 | Lesser General Public License for more details. |
cd290faa | 15 | |
3214b89b | 16 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
cd290faa | 19 | |
c9bca511 | 20 | #include <fenv_libc.h> |
cd290faa UD |
21 | |
22 | int | |
23 | feenableexcept (int excepts) | |
24 | { | |
25 | unsigned long int new_exc, old_exc; | |
26 | ||
27 | new_exc = __ieee_get_fp_control (); | |
28 | ||
c9bca511 UD |
29 | old_exc = (new_exc & SWCR_ENABLE_MASK) << SWCR_ENABLE_SHIFT; |
30 | new_exc |= (excepts >> SWCR_ENABLE_SHIFT) & SWCR_ENABLE_MASK; | |
cd290faa UD |
31 | |
32 | __ieee_set_fp_control (new_exc); | |
33 | ||
34 | return old_exc; | |
35 | } |