c++ binary search

#define SIZE 8192
char buf[SIZE];
..
unsigned char s[] = { 0x46,0x4C,0x56 };
char* pos = search(buf, buf + size, s, s + 3);
if (pos < buf + size)
    cerr << "match found at " << static_cast<void*>(pos) << endl;
..
// match found at 0x288c3c
// match found at 0x288c3c
// match found at 0x288c3c
// match found at 0x288c3c
// match found at 0x288c3c