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e7cbd451 UD |
1 | /* Clear given exceptions in current floating-point environment. |
2 | Copyright (C) 2000 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | Contributed by David Huggins-Daines <dhd@debian.org>, 2000 | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Library General Public License as | |
8 | published by the Free Software Foundation; either version 2 of the | |
9 | License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Library General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Library General Public | |
17 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
18 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <fenv.h> | |
22 | ||
23 | int | |
24 | feclearexcept (int excepts) | |
25 | { | |
26 | unsigned int sw[2]; | |
27 | ||
28 | /* Get the current status word. */ | |
29 | __asm__ ("fstd %%fr0,0(%1)" : "=m" (*sw) : "r" (sw)); | |
30 | ||
31 | /* Clear all the relevant bits. */ | |
32 | sw[0] &= ~(excepts & FE_ALL_EXCEPT); | |
33 | __asm__ ("fldd 0(%0),%%fr0" : : "r" (sw)); | |
34 | ||
35 | /* Success. */ | |
36 | return 0; | |
37 | } |