gen7_mt_rand.cpp

#include <stdio.h>
#include <array>
#include "tinymt32.h"

using Status = std::array<uint32_t, 4>;
std::array<Status, 4> seeds = {
    Status{0x63B07A71, 0x5740A11A, 0x3CFE1DE3, 0x08A80987},
    Status{0x5740A11A, 0x3CFE1DE3, 0xA5083B98, 0x14EF46DC},
    Status{0x3CFE1DE3, 0x2A782A76, 0xA21332BC, 0x4D436C11},
    Status{0x2A782A76, 0xA21332BC, 0xAAEA877B, 0xB65DD562}};

void setStatus(tinymt32_t* random, int idx) {
    for (int i = 0; i < 4; i++) {
        random->status[i] = seeds[idx][i];
    }
}

void print_hex(uint32_t i) { printf("%08X ", i); }

int main() {
    tinymt32_t random;
    random.mat1 = 0x8F7011EE;
    random.mat2 = 0xFC78FF1F;
    random.tmat = 0x3793fdff;
    setStatus(&random, 0);
    for (int i = 0; i < 1000; i++) {
        /*
        for (int j = 3; j >= 0; j--) {
            print_hex(random.status[j]);
            // print_hex(random.status[j] ^ seeds[i][j]);
        }
        */
        // 実際に使われる乱数
        auto r = tinymt32_temper(&random);
        if (r == 0x17D1738B) {
            printf("%d\n", i);
            print_hex(r);
            printf("\n");
        }
        tinymt32_next_state(&random);
    }
}