1 /* Set floating-point environment exception handling.
2 Copyright (C) 1997-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <fenv.h>
20 #include <math.h>
21 #include <fpu_control.h>
22
23 int
fesetexceptflag(const fexcept_t * flagp,int excepts)24 fesetexceptflag (const fexcept_t *flagp, int excepts)
25 {
26 fpu_control_t temp;
27
28 /* Get the current environment. */
29 _FPU_GETCW (temp);
30
31 /* Set the desired exception mask. */
32 temp &= ~(excepts & FE_ALL_EXCEPT);
33 temp |= (*flagp & excepts & FE_ALL_EXCEPT);
34
35 /* Save state back to the FPU. */
36 _FPU_SETCW (temp);
37
38 return 0;
39 }
40