ref: 7fec06f40e0a7ed9787c8d0cd14a7619a1fca228
dir: /sys/src/ape/lib/ap/gen/strcmp.c/
#include <string.h>
int
strcmp(const char *s1, const char *s2)
{
	unsigned c1, c2;
	for(;;) {
		c1 = *s1++;
		c2 = *s2++;
		if(c1 != c2) {
			if(c1 > c2)
				return 1;
			return -1;
		}
		if(c1 == 0)
			return 0;
	}
}