#include "../rng.h"
#include "./generator.h"

// parameters recommended by Nakazawa & Nakazawa
// https://en.wikipedia.org/wiki/Lehmer_random_number_generator

namespace splat {
    class xorshift32 : public PRNG {
        public:
            xorshift32(uint32_t genSeed) : PRNG(genSeed) {
                state = genSeed;
            }
            uint32_t generate() override {
                state ^= state << 13;
                state ^= state >> 17;
                state ^= state << 5;
                return state;
            }
            std::string getName() override {
                return "xorshift32";
            }
        private:
            uint32_t state;
    };
}