1 /* Install given floating-point control modes.
2 Copyright (C) 2020-2025 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
fesetmode(const femode_t * modep)22 fesetmode (const femode_t *modep)
23 {
24 unsigned int fpcr;
25
26 if (modep == FE_DFL_MODE)
27 {
28 fpcr = _FPU_DEFAULT;
29 }
30 else
31 {
32 /* No need to mask out reserved bits as they are IoW. */
33 fpcr = *modep;
34 }
35
36 _FPU_SETCW (fpcr);
37
38 return 0;
39 }
40