libm/nds32/fegetexcept.c

   1 /*
   2  * Copyright (C) 2016-2017 Andes Technology, Inc.
   3  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   4  */
   5
   6 /* Get floating-point exceptions.
   7    Copyright (C) 2001-2013 Free Software Foundation, Inc.
   8    Contributed by Philip Blundell <philb@gnu.org>, 2001
   9
  10    The GNU C Library is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU Lesser General Public
  12    License as published by the Free Software Foundation; either
  13    version 2.1 of the License, or (at your option) any later version.
  14
  15    The GNU C Library is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    Lesser General Public License for more details.
  19
  20    You should have received a copy of the GNU Lesser General Public
  21    License along with the GNU C Library.  If not, see
  22    <http://www.gnu.org/licenses/>.  */
  23
  24 #include <fenv.h>
  25 #include "fenv_libc.h"
  26 #include <fpu_control.h>
  27
  28 int
  29 fegetexcept (void)
  30 {
  31 #ifdef __NDS32_ABI_2FP_PLUS__
  32         unsigned long temp;
  33
  34         _FPU_GETCW (temp);
  35
  36         return (temp & ENABLE_MASK) >> ENABLE_SHIFT;
  37 #else
  38         /* Unsupported. Return all exceptions disabled.  */
  39         return 0;
  40 #endif
  41 }