1 /* Store current floating-point environment and clear exceptions.
2 Copyright (C) 1997-2025 Free Software Foundation, Inc.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <fenv.h>
19 #include <fpu_control.h>
20
21 int
feholdexcept(fenv_t * envp)22 feholdexcept (fenv_t *envp)
23 {
24 fpu_control_t temp;
25
26 /* Store the environment. */
27 _FPU_GETCW (temp);
28 envp->__fpscr = temp;
29
30 /* Clear the status flags. */
31 temp &= ~FE_ALL_EXCEPT;
32
33 /* Now set all exceptions to non-stop. */
34 temp &= ~(FE_ALL_EXCEPT << 5);
35
36 _FPU_SETCW (temp);
37
38 /* Success. */
39 return 0;
40 }
41