summaryrefslogtreecommitdiffstats
path: root/usr/klibc/strncmp.c
blob: 52355450e501ed6afdaaea179e8c5f91534c4d54 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
/*
 * strncmp.c
 */

#include <string.h>

int strncmp(const char *s1, const char *s2, size_t n)
{
	const unsigned char *c1 = (const unsigned char *)s1;
	const unsigned char *c2 = (const unsigned char *)s2;
	unsigned char ch;
	int d = 0;

	while (n--) {
		d = (int)(ch = *c1++) - (int)*c2++;
		if (d || !ch)
			break;
	}

	return d;
}