libdecnumber/decExcept.c

   1 /* Temporary library support for decimal floating point.
   2    Copyright (C) 2005-2017 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 #include <fenv.h>
  26 #include "dconfig.h"
  27 #include "decContext.h"
  28 #include "decExcept.h"
  29
  30 /* Internal, non-documented functions for testing libgcc functions.
  31    This support is not sufficient for real use.  */
  32
  33 static int __dfp_except_flags = 0;
  34
  35 /* Clear the dummy exception flags.  */
  36 void
  37 __dfp_clear_except (void)
  38 {
  39   __dfp_except_flags = 0;
  40 }
  41
  42 /* Return the dummy exception flags corresponding to the mask.  */
  43 int
  44 __dfp_test_except (int mask)
  45 {
  46   return __dfp_except_flags & mask;
  47 }
  48
  49 /* Set dummy exception flags.  */
  50 void
  51 __dfp_raise_except (int flags)
  52 {
  53   __dfp_except_flags |= flags;
  54 }