aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/i386/fpu/fegetround.c
blob: 8ce8b859d8b0395b264c07703d494ff320a38bbc (plain)
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
/* Return current rounding direction.
   Copyright (C) 1997-2017 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, see
   <http://www.gnu.org/licenses/>.  */

#include <fenv.h>

int
__fegetround (void)
{
  int cw;

  __asm__ ("fnstcw %0" : "=m" (*&cw));

  return cw & 0xc00;
}
libm_hidden_def (__fegetround)
weak_alias (__fegetround, fegetround)
libm_hidden_weak (fegetround)