32 lines
740 B
C++
32 lines
740 B
C++
|
#include "hash/buzhash.hpp"
|
||
|
|
#include "io.hpp"
|
||
|
|
|
||
|
|
#include <iostream>
|
||
|
|
|
||
|
|
int main (int argc, char const **argv)
|
||
|
|
{
|
||
|
|
(void)argc;
|
||
|
|
|
||
|
|
cruft::mapped_file src (argv[1]);
|
||
|
|
cruft::view bytes (src);
|
||
|
|
|
||
|
|
static constexpr std::size_t BITS = 16;
|
||
|
|
std::vector<std::size_t> counts (BITS, 0);
|
||
|
|
|
||
|
|
static constexpr std::size_t WINDOW = 48;
|
||
|
|
cruft::hash::buzhash<u64> h (WINDOW, bytes);
|
||
|
|
|
||
|
|
for (auto const &val: bytes.consume (WINDOW)) {
|
||
|
|
auto const res = h (&val);
|
||
|
|
|
||
|
|
std::size_t mask = ~u64(0) >> (64 - BITS);
|
||
|
|
for (std::size_t i = 0; i < BITS; ++i) {
|
||
|
|
if ((res & mask) == 0)
|
||
|
|
counts[i]++;
|
||
|
|
mask >>= 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for (auto const &i: counts)
|
||
|
|
std::cout << i << '\n';
|
||
|
|
}
|