ref: f8935b5778397074d41a48205e5c7f87d7b531fe dir: purgatorio/libkern/memchr.c
#include <lib9.h> void* memchr(void *ap, int c, ulong n) { uchar *sp; sp = ap; c &= 0xFF; while(n > 0) { if(*sp++ == c) return sp-1; n--; } return 0; }