ref: 590ba0dfe7a73ab2e47fe333cf700e01d9cda6e9
dir: /lib/c/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; }