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d5efd131 MF |
1 | /* Store current floating-point environment and clear exceptions. |
2 | Copyright (C) 1997, 1999, 2000, 2005, 2007 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999 | |
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 | ||
23 | int | |
24 | feholdexcept (fenv_t *envp) | |
25 | { | |
26 | fenv_t fpsr; | |
27 | /* Save the current state. */ | |
28 | __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); | |
29 | *envp = fpsr; | |
30 | ||
31 | /* Set the trap disable bits. */ | |
32 | fpsr |= FE_ALL_EXCEPT; | |
33 | ||
34 | /* And clear the exception bits. */ | |
35 | fpsr &= ~(fenv_t) (FE_ALL_EXCEPT << 13); | |
36 | ||
37 | __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr)); | |
38 | ||
39 | /* Success. */ | |
40 | return 0; | |
41 | } | |
42 | libm_hidden_def (feholdexcept) |