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