1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/* Store current floating-point environment.
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@tamu.edu>, 1997
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv.h>
int
__fegetenv (fenv_t *envp)
{
unsigned long int fpcr;
unsigned long int swcr;
/* Get status from software and hardware. Note that we don't need an
excb because the callsys is an implied trap barrier. */
swcr = __ieee_get_fp_control ();
__asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr));
/* Merge the two bits of information. The magic number at the end is
the exception enable mask. */
*envp = (fpcr & (3UL << 58)) | (swcr & (FE_ALL_EXCEPT | 0x3e));
/* Success. */
return 0;
}
strong_alias (__fegetenv, __old_fegetenv)
symbol_version (__old_fegetenv, fegetenv, GLIBC_2.1);
default_symbol_version (__fegetenv, fegetenv, GLIBC_2.2);
|
