sysdeps/powerpc/fpu/fegetexcept.c

   1 /* Get floating-point exceptions.
   2    Copyright (C) 2000-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Geoffrey Keating <geoffk@geoffk.org>, 2000.
   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
  22 int
  23 __fegetexcept (void)
  24 {
  25   fenv_union_t fe;
  26   int result = 0;
  27
  28   fe.fenv = fegetenv_register ();
  29
  30   if (fe.l & (1 << (31 - FPSCR_XE)))
  31       result |= FE_INEXACT;
  32   if (fe.l & (1 << (31 - FPSCR_ZE)))
  33       result |= FE_DIVBYZERO;
  34   if (fe.l & (1 << (31 - FPSCR_UE)))
  35       result |= FE_UNDERFLOW;
  36   if (fe.l & (1 << (31 - FPSCR_OE)))
  37       result |= FE_OVERFLOW;
  38   if (fe.l & (1 << (31 - FPSCR_VE)))
  39       result |= FE_INVALID;
  40
  41   return result;
  42 }
  43 weak_alias (__fegetexcept, fegetexcept)