about summary refs log tree commit diff
path: root/sysdeps/s390/fpu/fesetround.c
blob: 11fae8fe8c44706ca40b95a52724f1d6d8c88eb3 (plain) (blame)
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
/* Set current rounding direction.
   Copyright (C) 2000 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com).

   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_libc.h>
#include <fpu_control.h>

int
fesetround (int round)
{
  if ((round|FPC_RM_MASK) != FPC_RM_MASK)
    {
      /* ROUND is not a valid rounding mode.  */
      return 1;
    }
  __asm__ volatile ("srnm 0(%0)"
		    :
		    : "a" (round));

  return 0;
}