ref: a107efa5686c6b4526e202609057600d2543550f
dir: /libc/src/memchr.c/
/* See LICENSE file for copyright and license details. */
#include <string.h>
void *
memchr(const void *s, int c, size_t n)
{
unsigned char *bp = (char *) s;
while (n > 0 && *bp++ != c)
--n;
return (n == 0) ? NULL : bp-1;
}