public async Task TestGammaDistribution01()
{
using var rng = new MultiThreadedRng();
var dist = new FastRng.Double.Distributions.GammaA5B15(rng);
var fra = new FrequencyAnalysis();
for (var n = 0; n < 100_000; n++)
{
fra.CountThis(await dist.NextNumber());
}
var result = fra.NormalizeAndPlotEvents(TestContext.WriteLine);
Assert.That(result[0], Is.EqualTo(0.0000929594237282).Within(0.0008));
Assert.That(result[1], Is.EqualTo(0.0012801746797876).Within(0.002));
Assert.That(result[2], Is.EqualTo(0.0055781488254349).Within(0.004));
Assert.That(result[21], Is.EqualTo(0.9331608887752720).Within(0.09));
Assert.That(result[22], Is.EqualTo(0.9594734828891280).Within(0.09));
Assert.That(result[23], Is.EqualTo(0.9790895765535350).Within(0.09));
Assert.That(result[50], Is.EqualTo(0.3478287795336570).Within(0.06));
Assert.That(result[75], Is.EqualTo(0.0403399049422936).Within(0.009));
Assert.That(result[85], Is.EqualTo(0.0163628388658126).Within(0.009));
Assert.That(result[90], Is.EqualTo(0.0097147611446660).Within(0.005));
Assert.That(result[97], Is.EqualTo(0.0041135143233153).Within(0.008));
Assert.That(result[98], Is.EqualTo(0.0036872732029996).Within(0.008));
Assert.That(result[99], Is.EqualTo(0.0033038503429554).Within(0.008));
}
public async Task TestGammaGeneratorWithRange01()
{
using var rng = new MultiThreadedRng();
var dist = new FastRng.Double.Distributions.GammaA5B15(rng);
var samples = new double[1_000];
