1#include <string.h>
2
3int strncmp(const char *_l, const char *_r, size_t n)
4{
5	const unsigned char *l=(void *)_l, *r=(void *)_r;
6	if (!n--) return 0;
7	for (; *l && *r && n && *l == *r ; l++, r++, n--);
8	return *l - *r;
9}
10