source: trunk/sys/dietlibc/memmem.c @ 21

#define _GNU_SOURCE 23
#include <sys/types.h>
#include <string.h>

void *memmem(const void* haystack, size_t hl, const void* needle, size_t nl) {
  int i;
  if (nl>hl) return 0;
  for (i=hl-nl+1; i; --i) {
    if (!memcmp(haystack,needle,nl))
      return (char*)haystack;
    ++haystack;
  }
  return 0;
}