sysdeps/powerpc/q_neg.c

   1 /* Negate a 128-bit floating point value.
   2    Copyright (C) 1997 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <quad_float.h>
  21
  22 /* long double _q_neg(const long double *a);
  23    Negate 'a'. Don't raise exceptions.
  24    */
  25
  26 void
  27 __q_neg(unsigned int result[4], unsigned int a[4])
  28 {
  29   unsigned int t1,t2;
  30   t1 = a[0];
  31   t2 = a[1];
  32   result[0] = t1 ^ 0x80000000;
  33   t1 = a[2];
  34   result[1] = t2;
  35   t2 = a[3];
  36   result[2] = t1;
  37   result[3] = t2;
  38 }