Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/ape/lib/ap/gen/strncmp.c

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


#include <string.h>

int
strncmp(const char *s1, const char *s2, size_t n)
{
	unsigned c1, c2;
	long nn;

	nn = n;
	while(nn > 0) {
		c1 = *s1++;
		c2 = *s2++;
		nn--;
		if(c1 != c2) {
			if(c1 > c2)
				return 1;
			return -1;
		}
		if(c1 == 0)
			break;
	}
	return 0;
}

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