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63551311 | 1 | /* Store current floating-point environment and clear exceptions. |
a334319f | 2 | Copyright (C) 2000 Free Software Foundation, Inc. |
63551311 | 3 | This file is part of the GNU C Library. |
a334319f | 4 | Contributed by Andreas Jaeger <aj@suse.de>, 2000. |
63551311 UD |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
63551311 UD |
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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
63551311 | 15 | |
41bdb6e2 AJ |
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. */ | |
63551311 UD |
20 | |
21 | #include <fenv.h> | |
a334319f | 22 | #include <fpu_control.h> |
63551311 UD |
23 | |
24 | int | |
25 | feholdexcept (fenv_t *envp) | |
26 | { | |
a334319f UD |
27 | fpu_control_t cw; |
28 | ||
29 | /* Save the current state. */ | |
30 | _FPU_GETCW (cw); | |
31 | envp->__fp_control_register = cw; | |
32 | ||
33 | /* Clear all exception enable bits and flags. */ | |
34 | cw &= ~(_FPU_MASK_V|_FPU_MASK_Z|_FPU_MASK_O|_FPU_MASK_U|_FPU_MASK_I|FE_ALL_EXCEPT); | |
35 | _FPU_SETCW (cw); | |
36 | ||
37 | return 0; | |
63551311 | 38 | } |