106 lines
4.3 KiB
C#
106 lines
4.3 KiB
C#
using System;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq;
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using System.Threading.Tasks;
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using FastRng.Float;
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using NUnit.Framework;
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namespace FastRngTests.Float.Distributions
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{
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[ExcludeFromCodeCoverage]
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public class LogNormalS1M0
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{
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[Test]
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[Category(TestCategories.COVER)]
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[Category(TestCategories.NORMAL)]
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public async Task TestLogNormalDistribution01()
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{
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var dist = new FastRng.Float.Distributions.LogNormalS1M0();
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var fra = new FrequencyAnalysis();
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var rng = new MultiThreadedRng();
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for (var n = 0; n < 100_000; n++)
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fra.CountThis(await rng.NextNumber(dist));
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rng.StopProducer();
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var result = fra.NormalizeAndPlotEvents(TestContext.WriteLine);
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Assert.That(result[0], Is.EqualTo(0.001505531f).Within(0.003f));
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Assert.That(result[1], Is.EqualTo(0.014408709f).Within(0.01f));
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Assert.That(result[2], Is.EqualTo(0.043222256f).Within(0.02f));
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Assert.That(result[21], Is.EqualTo(0.876212056f).Within(0.15f));
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Assert.That(result[22], Is.EqualTo(0.895582226f).Within(0.15f));
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Assert.That(result[23], Is.EqualTo(0.912837250f).Within(0.15f));
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Assert.That(result[50], Is.EqualTo(0.948062005f).Within(0.2f));
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Assert.That(result[75], Is.EqualTo(0.768584762f).Within(0.089f));
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Assert.That(result[85], Is.EqualTo(0.697303612f).Within(0.089f));
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Assert.That(result[90], Is.EqualTo(0.663570581f).Within(0.089f));
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Assert.That(result[97], Is.EqualTo(0.618792767f).Within(0.089f));
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Assert.That(result[98], Is.EqualTo(0.612636410f).Within(0.089f));
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Assert.That(result[99], Is.EqualTo(0.606540679f).Within(0.089f));
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}
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[Test]
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[Category(TestCategories.COVER)]
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[Category(TestCategories.NORMAL)]
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public async Task TestLogNormalGeneratorWithRange01()
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{
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var rng = new MultiThreadedRng();
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var dist = new FastRng.Float.Distributions.LogNormalS1M0();
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var samples = new float[1_000];
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for (var n = 0; n < samples.Length; n++)
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samples[n] = await rng.NextNumber(-1.0f, 1.0f, dist);
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rng.StopProducer();
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Assert.That(samples.Min(), Is.GreaterThanOrEqualTo(-1.0f), "Min out of range");
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Assert.That(samples.Max(), Is.LessThanOrEqualTo(1.0f), "Max out of range");
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}
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[Test]
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[Category(TestCategories.COVER)]
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[Category(TestCategories.NORMAL)]
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public async Task TestLogNormalGeneratorWithRange02()
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{
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var rng = new MultiThreadedRng();
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var dist = new FastRng.Float.Distributions.LogNormalS1M0();
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var samples = new float[1_000];
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for (var n = 0; n < samples.Length; n++)
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samples[n] = await rng.NextNumber(0.0f, 1.0f, dist);
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rng.StopProducer();
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Assert.That(samples.Min(), Is.GreaterThanOrEqualTo(0.0f), "Min is out of range");
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Assert.That(samples.Max(), Is.LessThanOrEqualTo(1.0f), "Max is out of range");
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}
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[Test]
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[Category(TestCategories.COVER)]
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[Category(TestCategories.NORMAL)]
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public async Task TestLogNormalGeneratorWithRange03()
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{
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var rng = new MultiThreadedRng();
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var dist = new FastRng.Float.Distributions.LogNormalS1M0 { Random = rng }; // Test default parameters
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var samples = new float[1_000];
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for (var n = 0; n < samples.Length; n++)
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samples[n] = await dist.GetDistributedValue();
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rng.StopProducer();
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Assert.That(samples.Min(), Is.GreaterThanOrEqualTo(0.0f), "Min is out of range");
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Assert.That(samples.Max(), Is.LessThanOrEqualTo(1.0f), "Max is out of range");
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}
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[Test]
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[Category(TestCategories.COVER)]
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[Category(TestCategories.NORMAL)]
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public async Task NoRandomNumberGenerator01()
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{
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var dist = new FastRng.Float.Distributions.LogNormalS1M0();
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Assert.DoesNotThrowAsync(async () => await dist.GetDistributedValue());
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Assert.That(await dist.GetDistributedValue(), Is.NaN);
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}
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}
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} |