xref: /OK3568_Linux_fs/kernel/lib/cmpdi2.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  */
4*4882a593Smuzhiyun 
5*4882a593Smuzhiyun #include <linux/export.h>
6*4882a593Smuzhiyun 
7*4882a593Smuzhiyun #include <linux/libgcc.h>
8*4882a593Smuzhiyun 
__cmpdi2(long long a,long long b)9*4882a593Smuzhiyun word_type notrace __cmpdi2(long long a, long long b)
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun 	const DWunion au = {
12*4882a593Smuzhiyun 		.ll = a
13*4882a593Smuzhiyun 	};
14*4882a593Smuzhiyun 	const DWunion bu = {
15*4882a593Smuzhiyun 		.ll = b
16*4882a593Smuzhiyun 	};
17*4882a593Smuzhiyun 
18*4882a593Smuzhiyun 	if (au.s.high < bu.s.high)
19*4882a593Smuzhiyun 		return 0;
20*4882a593Smuzhiyun 	else if (au.s.high > bu.s.high)
21*4882a593Smuzhiyun 		return 2;
22*4882a593Smuzhiyun 
23*4882a593Smuzhiyun 	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
24*4882a593Smuzhiyun 		return 0;
25*4882a593Smuzhiyun 	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
26*4882a593Smuzhiyun 		return 2;
27*4882a593Smuzhiyun 
28*4882a593Smuzhiyun 	return 1;
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun EXPORT_SYMBOL(__cmpdi2);
31