xref: /aosp_15_r20/external/libutf/runestrcmp.c (revision e72f39528b91793251d8cc21b78f3f8706ae7c47)
1*e72f3952SAlexander Dorokhine /*
2*e72f3952SAlexander Dorokhine  * The authors of this software are Rob Pike and Ken Thompson.
3*e72f3952SAlexander Dorokhine  *              Copyright (c) 2002 by Lucent Technologies.
4*e72f3952SAlexander Dorokhine  * Permission to use, copy, modify, and distribute this software for any
5*e72f3952SAlexander Dorokhine  * purpose without fee is hereby granted, provided that this entire notice
6*e72f3952SAlexander Dorokhine  * is included in all copies of any software which is or includes a copy
7*e72f3952SAlexander Dorokhine  * or modification of this software and in all copies of the supporting
8*e72f3952SAlexander Dorokhine  * documentation for such software.
9*e72f3952SAlexander Dorokhine  * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
10*e72f3952SAlexander Dorokhine  * WARRANTY.  IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
11*e72f3952SAlexander Dorokhine  * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
12*e72f3952SAlexander Dorokhine  * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
13*e72f3952SAlexander Dorokhine  */
14*e72f3952SAlexander Dorokhine #include <stdarg.h>
15*e72f3952SAlexander Dorokhine #include <string.h>
16*e72f3952SAlexander Dorokhine #include "utf.h"
17*e72f3952SAlexander Dorokhine #include "utfdef.h"
18*e72f3952SAlexander Dorokhine 
19*e72f3952SAlexander Dorokhine int
runestrcmp(const Rune * s1,const Rune * s2)20*e72f3952SAlexander Dorokhine runestrcmp(const Rune *s1, const Rune *s2)
21*e72f3952SAlexander Dorokhine {
22*e72f3952SAlexander Dorokhine 	Rune c1, c2;
23*e72f3952SAlexander Dorokhine 
24*e72f3952SAlexander Dorokhine 	for(;;) {
25*e72f3952SAlexander Dorokhine 		c1 = *s1++;
26*e72f3952SAlexander Dorokhine 		c2 = *s2++;
27*e72f3952SAlexander Dorokhine 		if(c1 != c2) {
28*e72f3952SAlexander Dorokhine 			if(c1 > c2)
29*e72f3952SAlexander Dorokhine 				return 1;
30*e72f3952SAlexander Dorokhine 			return -1;
31*e72f3952SAlexander Dorokhine 		}
32*e72f3952SAlexander Dorokhine 		if(c1 == 0)
33*e72f3952SAlexander Dorokhine 			return 0;
34*e72f3952SAlexander Dorokhine 	}
35*e72f3952SAlexander Dorokhine }
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