LXR linux/arch/score/lib/cmpdi2.c

   1/*
   2 * arch/score/lib/cmpdi2.c
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, see the file COPYING, or write
  16 * to the Free Software Foundation, Inc.,
  17 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18 */
  19
  20#include <linux/module.h>
  21#include "libgcc.h"
  22
  23word_type __cmpdi2(long long a, long long b)
  24{
  25        const DWunion au = {
  26                .ll = a
  27        };
  28        const DWunion bu = {
  29                .ll = b
  30        };
  31
  32        if (au.s.high < bu.s.high)
  33                return 0;
  34        else if (au.s.high > bu.s.high)
  35                return 2;
  36
  37        if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
  38                return 0;
  39        else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
  40                return 2;
  41
  42        return 1;
  43}
  44EXPORT_SYMBOL(__cmpdi2);
  45