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1 | /* Set floating-point environment exception handling. |
2 | Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | Contributed by Hartvig Ekner <hartvige@mips.com>, 2002. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the 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 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
20 | ||
21 | #include <fenv.h> | |
22 | #include <fpu_control.h> | |
23 | ||
24 | int | |
25 | fesetexceptflag (const fexcept_t *flagp, int excepts) | |
26 | { | |
27 | fexcept_t temp; | |
28 | ||
29 | /* Get the current exceptions. */ | |
30 | _FPU_GETCW (temp); | |
31 | ||
32 | /* Make sure the flags we want restored are legal. */ | |
33 | excepts &= FE_ALL_EXCEPT; | |
34 | ||
35 | /* Now clear the bits called for, and copy them in from flagp. Note that | |
36 | we ignore all non-flag bits from *flagp, so they don't matter. */ | |
37 | temp = (temp & ~excepts) | (*flagp & excepts); | |
38 | ||
39 | _FPU_SETCW (temp); | |
40 | ||
41 | /* Success. */ | |
42 | return 0; | |
43 | } |