mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-19 19:40:06 +00:00
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
|
/* Set floating-point environment exception handling.
|
||
|
|
Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by David Huggins-Daines <dhd@debian.org>, 2000
|
||
|
|
|
||
|
|
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>
|
||
|
|
#include <math.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
fesetexceptflag (const fexcept_t *flagp, int excepts)
|
||
|
|
{
|
||
|
|
unsigned int sw[2];
|
||
|
|
|
||
|
|
/* Get the current status word. */
|
||
|
|
__asm__ ("fstd %%fr0,0(%1)" : "=m" (*sw) : "r" (sw));
|
||
|
|
|
||
|
|
/* Install the new exception flags bits. */
|
||
|
|
sw[0] &= ~(excepts & (FE_ALL_EXCEPT >> 27));
|
||
|
|
sw[0] |= (*flagp & excepts & FE_ALL_EXCEPT) << 27;
|
||
|
|
|
||
|
|
/* Store the new status word. */
|
||
|
|
__asm__ ("fldd 0(%0),%%fr0" : : "r" (sw));
|
||
|
|
|
||
|
|
/* Success. */
|
||
|
|
return 0;
|
||
|
|
}
|