sysdeps/powerpc/powerpc32/e500/nofpu/flt-rounds.c

   1 /* Return current rounding mode as correct value for FLT_ROUNDS.  e500
   2    version.
   3    Copyright (C) 2013-2014 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <fenv_libc.h>
  21 #include <stdlib.h>
  22
  23 int
  24 __flt_rounds (void)
  25 {
  26   switch (fegetenv_register () & SPEFSCR_FRMC)
  27     {
  28     case FE_TOWARDZERO:
  29       return 0;
  30     case FE_TONEAREST:
  31       return 1;
  32     case FE_UPWARD:
  33       return 2;
  34     case FE_DOWNWARD:
  35       return 3;
  36     default:
  37       abort ();
  38     }
  39 }