sysdeps/sparc/fpu/fesetround.c

   1 /* Set current rounding direction.
   2    Copyright (C) 1997, 2005 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <fenv.h>
  21
  22 int
  23 fesetround (int round)
  24 {
  25   fenv_t tmp;
  26
  27   if ((round & ~__FE_ROUND_MASK) != 0)
  28     /* ROUND is no valid rounding mode.  */
  29     return 1;
  30
  31   __fenv_stfsr (tmp);
  32   tmp &= ~__FE_ROUND_MASK;
  33   tmp |= round;
  34   __fenv_ldfsr (tmp);
  35
  36   return 0;
  37 }
  38 libm_hidden_def (fesetround)