1 /* Install given floating-point control modes.
2 Copyright (C) 2020-2022 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
fesetmode(const femode_t * modep)23 fesetmode (const femode_t *modep)
24 {
25 unsigned int fpcr;
26
27 if (modep == FE_DFL_MODE)
28 {
29 fpcr = _FPU_DEFAULT;
30 }
31 else
32 {
33 /* No need to mask out reserved bits as they are IoW. */
34 fpcr = *modep;
35 }
36
37 _FPU_SETCW (fpcr);
38
39 return 0;
40 }
41