sysdeps/powerpc/powerpc32/e500/nofpu/fesetround.c

   1 /* Set current rounding direction.  e500 version.
   2    Copyright (C) 2004-2014 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv_libc.h>
  20
  21 int
  22 fesetround (int round)
  23 {
  24   unsigned long fpescr;
  25
  26   if ((unsigned int) round > 3)
  27     return 1;
  28
  29   fpescr = fegetenv_register ();
  30   fpescr = (fpescr & ~SPEFSCR_FRMC) | (round & 3);
  31   fesetenv_register (fpescr);
  32
  33   return 0;
  34 }
  35 libm_hidden_def (fesetround)