xref: /linux/lib/ucmpdi2.c (revision ef69f8d2ff09518657c3ecaf2db8408c16549829)
1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 2 of the License, or
5  * (at your option) any later version.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10  * GNU General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * along with this program; if not, see the file COPYING, or write
14  * to the Free Software Foundation, Inc.
15  */
16 
17 #include <linux/module.h>
18 #include <lib/libgcc.h>
19 
20 word_type __ucmpdi2(unsigned long long a, unsigned long long b)
21 {
22 	const DWunion au = {.ll = a};
23 	const DWunion bu = {.ll = b};
24 
25 	if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
26 		return 0;
27 	else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
28 		return 2;
29 	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
30 		return 0;
31 	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
32 		return 2;
33 	return 1;
34 }
35 EXPORT_SYMBOL(__ucmpdi2);
36