fusl/src/string/memcmp.c

#include <string.h>

int memcmp(const void* vl, const void* vr, size_t n) {
  const unsigned char *l = vl, *r = vr;
  for (; n && *l == *r; n--, l++, r++)
    ;
  return n ? *l - *r : 0;
}