1 /* Install given floating-point environment and raise exceptions.
2 Copyright (C) 1998-2025 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
feupdateenv(const fenv_t * envp)22 feupdateenv (const fenv_t *envp)
23 {
24 int temp;
25
26 /* Save current exceptions. */
27 _FPU_GETCW (temp);
28 temp &= FE_ALL_EXCEPT;
29
30 /* Install new environment. */
31 fesetenv (envp);
32
33 /* Raise the saved exception. Incidentally for us the implementation
34 defined format of the values in objects of type fexcept_t is the
35 same as the ones specified using the FE_* constants. */
36 feraiseexcept (temp);
37
38 /* Success. */
39 return 0;
40 }
41