ref: b0f3613b586e0f7c00156401040189d91b5bdc0c
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; }