sysdeps/powerpc/fpu/fegetexcept.c

   1 /* Get floating-point exceptions.
   2    Copyright (C) 2000, 2008 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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <fenv_libc.h>
  22
  23 int
  24 __fegetexcept (void)
  25 {
  26   fenv_union_t fe;
  27   int result = 0;
  28
  29   fe.fenv = fegetenv_register ();
  30
  31   if (fe.l[1] & (1 << (31 - FPSCR_XE)))
  32       result |= FE_INEXACT;
  33   if (fe.l[1] & (1 << (31 - FPSCR_ZE)))
  34       result |= FE_DIVBYZERO;
  35   if (fe.l[1] & (1 << (31 - FPSCR_UE)))
  36       result |= FE_UNDERFLOW;
  37   if (fe.l[1] & (1 << (31 - FPSCR_OE)))
  38       result |= FE_OVERFLOW;
  39   if (fe.l[1] & (1 << (31 - FPSCR_VE)))
  40       result |= FE_INVALID;
  41
  42   return result;
  43 }
  44 weak_alias (__fegetexcept, fegetexcept)