ref: c809e59d972aead305d59b23e4d1d156c1ebd2a6
dir: /src/libc/string/strncmp.c/
#include <string.h> #undef strncmp int strncmp(const char *s1, const char *s2, size_t n) { int c; for ( ; n > 0 && (c = *s1) && c == *s2; --n) ++s1, ++s2; if (n == 0) return 0; return *(unsigned char *) s1 - *(unsigned char *) s2; }