ref: 64688dc02ba9cc803d2b2a8b6030d73602ed18cc
dir: /lib/c/src/strncmp.c/
#include <string.h> #undef strncmp int strncmp(const char *s1, const char *s2, size_t n) { for (; n && *s1 && *s2 && *s1 == *s2; --n, ++s1, ++s2); /* nothing */; return n ? (*(unsigned char *)s1 - *(unsigned char *)s2) : 0; }