1/* Set current rounding direction.
2   Copyright (C) 1997 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
5
6   The GNU C Library is free software; you can redistribute it and/or
7   modify it under the terms of the GNU Lesser General Public
8   License as published by the Free Software Foundation; either
9   version 2.1 of the License, or (at your option) any later version.
10
11   The GNU C Library is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   Lesser General Public License for more details.
15
16   You should have received a copy of the GNU Lesser General Public
17   License along with the GNU C Library; if not, write to the Free
18   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19   02111-1307 USA.  */
20
21#include <fenv.h>
22
23int
24fesetround (int round)
25{
26  fexcept_t fpcr;
27
28  if (round & ~FE_UPWARD)
29    /* ROUND is no valid rounding mode.  */
30    return 1;
31
32  __asm__ ("fmove%.l %!,%0" : "=dm" (fpcr));
33  fpcr &= ~FE_UPWARD;
34  fpcr |= round;
35  __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
36
37  return 0;
38}
39