sysdeps/sh/sh4/fpu/feenablxcpt.c

   1 /* Enable floating-point exceptions.
   2    Copyright (C) 2012-2013 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
   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.h>
  21 #include <fpu_control.h>
  22
  23 int
  24 feenableexcept (int excepts)
  25 {
  26   fpu_control_t temp, old_flag;
  27
  28   /* Get current exceptions.  */
  29   _FPU_GETCW (temp);
  30
  31   old_flag = (temp >> 5) & FE_ALL_EXCEPT;
  32   excepts &= FE_ALL_EXCEPT;
  33
  34   temp |= excepts << 5;
  35   _FPU_SETCW (temp);
  36
  37   return old_flag;
  38 }