#pragma once

#include <stdint.h>
#include <cstring>
#include <initializer_list>


union block512_t {
    uint8_t x8[64];
    uint64_t x64[8];
    block512_t(){}
    block512_t(const std::initializer_list<uint64_t> &x) {
        if (x.size() < 8) {
            memset(this, 0, sizeof(block512_t));
        }
        auto it = x.begin();
        size_t i = 0, size = x.size();
        while (i < size) {
            x64[i] = *it;
            ++it; ++i;
        }
    }
    block512_t(uint8_t x) {
        for (int i = 0; i < 64; ++i) x8[i] = x;
    }
    bool operator==(const block512_t &x) const {
        for (int i = 0; i < 8; ++i) {
            if (x64[i] != x.x64[i]) {
                return false;
            }
        }
        return true;
    }
};

enum hash_mode_t
{
    hm512, hm256
};