libdecnumber/decExcept.c

   1 /* Temporary library support for decimal floating point.
   2    Copyright (C) 2005, 2006 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 2, or (at your option)
   9    any later version.
  10
  11    In addition to the permissions in the GNU General Public License, the
  12    Free Software Foundation gives you unlimited permission to link the
  13    compiled version of this file into combinations with other programs,
  14    and to distribute those combinations without any restriction coming
  15    from the use of this file.  (The General Public License restrictions
  16    do apply in other respects; for example, they cover modification of
  17    the file, and distribution when not linked into a combine
  18    executable.)
  19
  20    GCC is distributed in the hope that it will be useful, but WITHOUT
  21    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  22    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  23    License for more details.
  24
  25    You should have received a copy of the GNU General Public License
  26    along with GCC; see the file COPYING.  If not, write to the Free
  27    Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  28    02110-1301, USA.  */
  29
  30 #include <fenv.h>
  31 #include "config.h"
  32 #include "decContext.h"
  33 #include "decExcept.h"
  34
  35 /* Internal, non-documented functions for testing libgcc functions.
  36    This support is not sufficient for real use.  */
  37
  38 static int __dfp_except_flags = 0;
  39
  40 /* Clear the dummy exception flags.  */
  41 void
  42 __dfp_clear_except (void)
  43 {
  44   __dfp_except_flags = 0;
  45 }
  46
  47 /* Return the dummy exception flags corresponding to the mask.  */
  48 int
  49 __dfp_test_except (int mask)
  50 {
  51   return __dfp_except_flags & mask;
  52 }
  53
  54 /* Set dummy exception flags.  */
  55 void
  56 __dfp_raise_except (int flags)
  57 {
  58   __dfp_except_flags |= flags;
  59 }