ref: 0c6b04d3013c4dd19b64803c89e20ace6517d38b
dir: /lib/c/memcmp.c/
#include <string.h> #undef memcmp int memcmp(const void *s1, const void *s2, size_t n) { char *s = (char *) s1, *t = (char *) s2; while (n > 0 && *s == *t) --n, ++s, ++t; return n ? (*s - *t) : 0; }