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Commit | Line | Data |
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c72aa4a2 | 1 | /* Set current rounding direction. |
dff8da6b | 2 | Copyright (C) 1997-2024 Free Software Foundation, Inc. |
c72aa4a2 | 3 | This file is part of the GNU C Library. |
c72aa4a2 UD |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or | |
3214b89b 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. | |
c72aa4a2 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 | |
3214b89b | 13 | Lesser General Public License for more details. |
c72aa4a2 | 14 | |
3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff | 16 | License along with the GNU C Library. If not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
c72aa4a2 UD |
18 | |
19 | #include <fenv.h> | |
20 | ||
21 | int | |
01238691 | 22 | __fesetround (int round) |
c72aa4a2 UD |
23 | { |
24 | fexcept_t fpcr; | |
25 | ||
26 | if (round & ~FE_UPWARD) | |
27 | /* ROUND is no valid rounding mode. */ | |
16e4bf6f | 28 | return 1; |
c72aa4a2 UD |
29 | |
30 | __asm__ ("fmove%.l %!,%0" : "=dm" (fpcr)); | |
31 | fpcr &= ~FE_UPWARD; | |
32 | fpcr |= round; | |
33 | __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr)); | |
34 | ||
16e4bf6f | 35 | return 0; |
c72aa4a2 | 36 | } |
01238691 JM |
37 | libm_hidden_def (__fesetround) |
38 | weak_alias (__fesetround, fesetround) | |
39 | libm_hidden_weak (fesetround) |