1 /* Store current representation for exceptions.
2 Copyright (C) 1998-2022 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 <fpu_control.h>
21
22 int
fegetexceptflag(fexcept_t * flagp,int excepts)23 fegetexceptflag (fexcept_t *flagp, int excepts)
24 {
25 fpu_control_t temp;
26
27 /* Get the current exceptions. */
28 _FPU_GETCW (temp);
29
30 /* We only save the relevant bits here. In particular, care has to be
31 taken with the CAUSE bits, as an inadvertent restore later on could
32 generate unexpected exceptions. */
33
34 *flagp = temp & excepts & FE_ALL_EXCEPT;
35
36 /* Success. */
37 return 0;
38 }
39