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15a946b5 | 1 | /* Disable floating-point exceptions. |
568035b7 | 2 | Copyright (C) 2012-2013 Free Software Foundation, Inc. |
15a946b5 KK |
3 | This file is part of the GNU C Library. |
4 | Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012. | |
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 | #include <fpu_control.h> | |
22 | ||
23 | int | |
24 | fedisableexcept (int excepts) | |
25 | { | |
04fb54b5 | 26 | fpu_control_t temp, old_exc; |
15a946b5 KK |
27 | |
28 | /* Get the current control register contents. */ | |
29 | _FPU_GETCW (temp); | |
30 | ||
31 | old_exc = (temp >> 5) & FE_ALL_EXCEPT; | |
32 | ||
33 | excepts &= FE_ALL_EXCEPT; | |
34 | ||
35 | temp &= ~(excepts << 5); | |
36 | _FPU_SETCW (temp); | |
37 | ||
38 | return old_exc; | |
39 | } |