mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-26 23:10:06 +00:00
34 lines
1.2 KiB
C
34 lines
1.2 KiB
C
|
/* Return current rounding direction.
|
||
|
|
Copyright (C) 1997, 2001 Free Software Foundation, Inc.
|
||
|
|
This file is part of the GNU C Library.
|
||
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
||
|
|
|
||
|
|
The GNU C Library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 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
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; if not, write to the Free
|
||
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||
|
|
02111-1307 USA. */
|
||
|
|
|
||
|
|
#include <fenv.h>
|
||
|
|
|
||
|
|
int
|
||
|
|
fegetround (void)
|
||
|
|
{
|
||
|
|
int cw;
|
||
|
|
/* We only check the x87 FPU unit. The SSE unit should be the same
|
||
|
|
- and if it's not the same there's no way to signal it. */
|
||
|
|
|
||
|
|
__asm__ ("fnstcw %0" : "=m" (*&cw));
|
||
|
|
|
||
|
|
return cw & 0xc00;
|
||
|
|
}
|