libdecnumber/dpd/decimal128Local.h

   1 /* Local definitions for use with the decNumber C Library.
   2    Copyright (C) 2007-2018 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 under
   7    the terms of the GNU General Public License as published by the Free
   8    Software Foundation; either version 3, or (at your option) any later
   9    version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12    WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14    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 #if !defined(DECIMAL128LOCAL)
  26
  27 /* The compiler needs sign manipulation functions for decimal128 which
  28    are not part of the decNumber package.  */
  29
  30 /* Set sign; this assumes the sign was previously zero.  */
  31 #define decimal128SetSign(d,b) \
  32   { (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] |= ((unsigned) (b) << 7); }
  33
  34 /* Clear sign.  */
  35 #define decimal128ClearSign(d) \
  36   { (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] &= ~0x80; }
  37
  38 /* Flip sign.  */
  39 #define decimal128FlipSign(d) \
  40   { (d)->bytes[WORDS_BIGENDIAN ? 0 : 15] ^= 0x80; }
  41
  42 #endif