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2a072de4 | 1 | /* Set the FPU control word. |
2b778ceb | 2 | Copyright (C) 1996-2021 Free Software Foundation, Inc. |
478b92f0 UD |
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 | |
41bdb6e2 AJ |
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. | |
478b92f0 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
478b92f0 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 18 | |
2e65ca2b | 19 | #include <math.h> |
f2ea0f5b | 20 | #include <fpu_control.h> |
2a072de4 RM |
21 | |
22 | void | |
23 | __setfpucw (fpu_control_t set) | |
24 | { | |
25 | fpu_control_t cw; | |
26 | ||
27 | /* Fetch the current control word. */ | |
28 | _FPU_GETCW (cw); | |
29 | ||
30 | /* Preserve the reserved bits, and set the rest as the user | |
31 | specified (or the default, if the user gave zero). */ | |
dcf0671d UD |
32 | cw &= _FPU_RESERVED; |
33 | cw |= set & ~_FPU_RESERVED; | |
34 | ||
35 | _FPU_SETCW (cw); | |
2a072de4 | 36 | } |