public void Random()
 {
     for (int i = 0; i < Iterations; i++)
     {
         _ = _rng.NextDouble();
     }
 }
        public void Xoroshiro128Plus_Distribution_Similar_To_Std_Random(bool useRandomSeed)
        {
            var rnd = new Random();
            var xoroshiro128plus = new Xoroshiro128Plus(useRandomSeed ? new Random() : null);

            var iterations = 10_000_000;

            var stdRand  = new double[iterations];
            var testRand = new double[iterations];

            for (int i = 0; i < iterations; i++)
            {
                stdRand[i]  = rnd.NextDouble();
                testRand[i] = xoroshiro128plus.NextDouble();
            }

            var stdAvg  = stdRand.Average();
            var testAvg = testRand.Average();

            var avgDiff = Math.Abs(stdAvg - testAvg);

            Assert.True(avgDiff < 0.001d, "RNG should have simular distributions as BCL version. Diff: " + avgDiff);

            Test_Uniform_Distribution(stdRand);
            Test_Uniform_Distribution(testRand);