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d5efd131 | 1 | /* Disable floating-point exceptions. |
2b778ceb | 2 | Copyright (C) 2000-2021 Free Software Foundation, Inc. |
d5efd131 MF |
3 | This file is part of the GNU C Library. |
4 | Contributed by Jes Sorensen <Jes.Sorensen@cern.ch>, 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 | |
75efb018 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
d5efd131 MF |
19 | |
20 | #include <fenv.h> | |
21 | ||
22 | int | |
23 | fedisableexcept (int excepts) | |
24 | { | |
25 | fenv_t old_fpsr; | |
26 | fenv_t new_fpsr; | |
27 | ||
28 | /* Get the current fpsr. */ | |
29 | __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (old_fpsr)); | |
30 | ||
31 | new_fpsr = old_fpsr | ((fenv_t) excepts & FE_ALL_EXCEPT); | |
32 | ||
33 | __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (new_fpsr) : "memory"); | |
34 | ||
35 | return (old_fpsr ^ FE_ALL_EXCEPT) & FE_ALL_EXCEPT; | |
36 | } |