ref: 8370fd16f8e62614b67941b32e2cd0e00fcc6e02 dir: /lib/c/memchr.c/
#include <string.h> #undef memchr 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; }