The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arch/score/lib/cmpdi2.c

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    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 
   23 word_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 }
   44 EXPORT_SYMBOL(__cmpdi2);

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