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30 lines
811 B
30 lines
811 B
#pragma once
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#include "impl.hpp"
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#include <debug.h>
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namespace rng
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{
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struct xoroshiro128plus : public RNG
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{
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using State = std::array<std::uint64_t, 2>;
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#define P D_dprintf("xorng: seeded with (%lu, %lu)", state[0], state[1]);
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inline constexpr xoroshiro128plus(std::uint64_t s0, std::uint64_t s1) : state({s0, s1}){P}
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inline constexpr xoroshiro128plus(std::array<std::uint64_t, 2>&& ar) : state(ar){P}
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inline constexpr xoroshiro128plus(const std::array<std::uint64_t, 2>& ar) : state(ar){P}
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inline constexpr xoroshiro128plus(const std::uint64_t (&ar)[2]) : state({ar[0], ar[1]}){P}
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#undef P
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std::uint64_t next_ulong();
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using RNG::next_long;
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std::int64_t next_long() override;
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void jump();
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void long_jump();
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protected:
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double sample() override;
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private:
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State state;
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};
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}
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