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63551311 | 1 | /* Store current floating-point environment. |
24176967 | 2 | Copyright (C) 1997,1999,2000,2001,2003 Free Software Foundation, Inc. |
63551311 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
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> | |
2fc08826 | 22 | #include <bp-sym.h> |
63551311 | 23 | |
63ae7b63 UD |
24 | int |
25 | __fegetenv (fenv_t *envp) | |
63551311 UD |
26 | { |
27 | __asm__ ("fnstenv %0" : "=m" (*envp)); | |
24176967 UD |
28 | /* And load it right back since the processor changes the mask. |
29 | Intel thought this opcode to be used in interrupt handlers which | |
30 | would block all exceptions. */ | |
31 | __asm__ ("fldenv %0" : : "m" (*envp)); | |
63ae7b63 UD |
32 | |
33 | /* Success. */ | |
34 | return 0; | |
63551311 | 35 | } |
4eb8a862 RM |
36 | |
37 | #include <shlib-compat.h> | |
38 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) | |
63ae7b63 | 39 | strong_alias (__fegetenv, __old_fegetenv) |
4eb8a862 RM |
40 | compat_symbol (libm, BP_SYM (__old_fegetenv), BP_SYM (fegetenv), GLIBC_2_1); |
41 | #endif | |
42 | ||
43 | versioned_symbol (libm, BP_SYM (__fegetenv), BP_SYM (fegetenv), GLIBC_2_2); |