106 lines
4.4 KiB
C#
106 lines
4.4 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 LaplaceB01M0
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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 TestLaplaceDistribution01()
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{
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var dist = new FastRng.Float.Distributions.LaplaceB01M0();
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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(1.0000000000000000f).Within(0.05f));
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Assert.That(result[1], Is.EqualTo(0.9048374180359590f).Within(0.05f));
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Assert.That(result[2], Is.EqualTo(0.8187307530779810f).Within(0.05f));
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Assert.That(result[21], Is.EqualTo(0.1224564282529820f).Within(0.05f));
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Assert.That(result[22], Is.EqualTo(0.1108031583623340f).Within(0.05f));
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Assert.That(result[23], Is.EqualTo(0.1002588437228040f).Within(0.05f));
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Assert.That(result[50], Is.EqualTo(0.0067379469990855f).Within(0.003f));
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Assert.That(result[75], Is.EqualTo(0.0005530843701478f).Within(0.0015f));
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Assert.That(result[85], Is.EqualTo(0.0002034683690106f).Within(0.0015f));
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Assert.That(result[90], Is.EqualTo(0.0001234098040867f).Within(0.0015f));
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Assert.That(result[97], Is.EqualTo(0.0000612834950532f).Within(0.0002f));
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Assert.That(result[98], Is.EqualTo(0.0000554515994322f).Within(0.0002f));
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Assert.That(result[99], Is.EqualTo(0.0000501746820562f).Within(0.0002f));
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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 TestLaplaceGeneratorWithRange01()
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{
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var rng = new MultiThreadedRng();
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var dist = new FastRng.Float.Distributions.LaplaceB01M0();
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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 TestLaplaceGeneratorWithRange02()
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{
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var rng = new MultiThreadedRng();
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var dist = new FastRng.Float.Distributions.LaplaceB01M0();
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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 TestLaplaceGeneratorWithRange03()
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{
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var rng = new MultiThreadedRng();
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var dist = new FastRng.Float.Distributions.LaplaceB01M0 { 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.LaplaceB01M0();
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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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} |