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# include <iostream>

# include <random>

# include "XoshiroCpp.hpp"

int main()

{

using namespace XoshiroCpp;

std::cout << "# Initialize with a default 64-bit seed\n";

{

Xoshiro256PlusPlus rng;

std::cout << rng() << '\n'

<< rng() << '\n'

<< rng() << '\n';

}

std::cout << "\n# Initialize with a 64-bit seed\n";

{

constexpr std::uint64_t seed = 777;

Xoshiro256PlusPlus rng(seed);

std::cout << rng() << '\n'

<< rng() << '\n'

<< rng() << '\n';

}

std::cout << "\n# Initialize with a given state\n";

{

// poorly distributed

constexpr std::uint64_t seed0 = 0;

constexpr std::uint64_t seed1 = 0;

constexpr std::uint64_t seed2 = 1;

constexpr std::uint64_t seed3 = 1;

constexpr Xoshiro256PlusPlus::state_type state =

{

seed0,

seed1,

seed2,

seed3

};

Xoshiro256PlusPlus rng(state);

std::cout << rng() << '\n'

<< rng() << '\n'

<< rng() << '\n';

}

std::cout << "\n# Initialize with a given state (SplitMix64 is used for entropy)\n";

{

// poorly distributed

constexpr std::uint64_t seed0 = 0;

constexpr std::uint64_t seed1 = 0;

constexpr std::uint64_t seed2 = 1;

constexpr std::uint64_t seed3 = 1;

constexpr Xoshiro256PlusPlus::state_type state =

{

SplitMix64(seed0)(),

SplitMix64(seed1)(),

SplitMix64(seed2)(),

SplitMix64(seed3)()

};

Xoshiro256PlusPlus rng(state);

std::cout << rng() << '\n'

<< rng() << '\n'

<< rng() << '\n';

}

std::cout << "\n# Generate double in the range of [0.0, 1.0)\n";

{

Xoshiro256PlusPlus rng(111);

std::cout << DoubleFromBits(rng()) << '\n'

<< DoubleFromBits(rng()) << '\n'

<< DoubleFromBits(rng()) << '\n';

}

std::cout << "\n# Generate int in the range of [1, 6]\n";

{

Xoshiro256PlusPlus rng(222);

std::uniform_int_distribution<int> dist(1, 6);

std::cout << dist(rng) << '\n'

<< dist(rng) << '\n'

<< dist(rng) << '\n';

}

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