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/arch/score/lib/cmpdi2.c

https://bitbucket.org/ndreys/linux-sunxi
C | 44 lines | 21 code | 5 blank | 18 comment | 6 complexity | ade005e8a27c3e37f3776fe4b59ad33b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 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);