1/* Copyright (C) 1997-2022 Free Software Foundation, Inc.
2
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 License as
7 published by the Free Software Foundation; either version 2.1 of the
8 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 <fpu_control.h>
21
22int
23fesetexceptflag (const fexcept_t *flagp, int excepts)
24{
25 fpu_fpsr_t fpsr;
26 fpu_fpsr_t fpsr_new;
27
28 /* Get the current environment. */
29 _FPU_GETFPSR (fpsr);
30 excepts &= FE_ALL_EXCEPT;
31
32 /* Set the desired exception mask. */
33 fpsr_new = fpsr & ~excepts;
34 fpsr_new |= *flagp & excepts;
35
36 /* Save state back to the FPU. */
37 if (fpsr != fpsr_new)
38 _FPU_SETFPSR (fpsr_new);
39
40 return 0;
41}
42

source code of glibc/sysdeps/aarch64/fpu/fsetexcptflg.c