ref: ec4c79f3a6ed97ec0c407a870827382cbefb1166
dir: /src/libc/string/strcmp.c/
#include <string.h>
#undef strcmp
int
strcmp(const char *s1, const char *s2)
{
	while (*s1 && *s2 && *s1 == *s2)
		++s1, ++s2;
	return *(unsigned char *) s1 - *(unsigned char *) s2;
}