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47 changes: 47 additions & 0 deletions
47
src/Mathematics.NET/Core/ParallelActions/MultiplyByScalarAction.cs
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| // <copyright file="MultiplyByScalarAction.cs" company="Mathematics.NET"> | ||
| // Mathematics.NET | ||
| // https://github.com/HamletTanyavong/Mathematics.NET | ||
| // | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2023 Hamlet Tanyavong | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
| // </copyright> | ||
|
|
||
| using System.Runtime.CompilerServices; | ||
| using CommunityToolkit.HighPerformance.Helpers; | ||
|
|
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| namespace Mathematics.NET.Core.ParallelActions; | ||
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| /// <summary>An action for multiplying items by a scalar</summary> | ||
| /// <typeparam name="T">A type that implements <see cref="IComplex{T}"/></typeparam> | ||
| public readonly struct MultiplyByScalarAction<T> : IRefAction<T> | ||
| where T : IComplex<T> | ||
| { | ||
| private readonly T _factor; | ||
|
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| public MultiplyByScalarAction(T factor) | ||
| { | ||
| _factor = factor; | ||
| } | ||
|
|
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| [MethodImpl(MethodImplOptions.AggressiveInlining)] | ||
| public void Invoke(ref T item) => item *= _factor; | ||
| } |
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81 changes: 81 additions & 0 deletions
81
tests/Mathematics.NET.Benchmarks/LinearAlgebra/MatrixMultiplyByScalarBenchmarks.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // <copyright file="MatrixMultiplyByScalarBenchmarks.cs" company="Mathematics.NET"> | ||
| // Mathematics.NET | ||
| // https://github.com/HamletTanyavong/Mathematics.NET | ||
| // | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2023 Hamlet Tanyavong | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
| // </copyright> | ||
|
|
||
| using CommunityToolkit.HighPerformance; | ||
| using CommunityToolkit.HighPerformance.Helpers; | ||
| using Mathematics.NET.Core.ParallelActions; | ||
|
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| namespace Mathematics.NET.Benchmarks.LinearAlgebra; | ||
|
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| [MemoryDiagnoser] | ||
| [RankColumn] | ||
| [Orderer(SummaryOrderPolicy.FastestToSlowest)] | ||
| public class MatrixMultiplyByScalarBenchmarks | ||
| { | ||
| public int Rows { get; set; } | ||
| public int Cols { get; set; } | ||
| public required ComplexNumber[,] MatrixOne { get; set; } | ||
| public required ComplexNumber[,] MatrixTwo { get; set; } | ||
|
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| [GlobalSetup] | ||
| public void GlobalSetup() | ||
| { | ||
| Rows = 100; | ||
| Cols = 100; | ||
|
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| MatrixOne = new ComplexNumber[Rows, Cols]; | ||
|
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| for (int i = 0; i < Rows; i++) | ||
| { | ||
| for (int j = 0; j < Cols; j++) | ||
| { | ||
| MatrixOne[i, j] = new(Random.Shared.NextDouble(), Random.Shared.NextDouble()); | ||
| MatrixTwo[i, j] = new(Random.Shared.NextDouble(), Random.Shared.NextDouble()); | ||
| } | ||
| } | ||
| } | ||
|
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| [Benchmark(Baseline = true)] | ||
| public void MultiplyByScalarNaive() | ||
| { | ||
| var matrixAsSpan = MatrixOne.AsMemory2D().Span; | ||
| for (int i = 0; i < Rows; i++) | ||
| { | ||
| for (int j = 0; j < Cols; j++) | ||
| { | ||
| matrixAsSpan[i, j] *= Real.Pi; | ||
| } | ||
| } | ||
| } | ||
|
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| [Benchmark] | ||
| public void MultiplyByScalarParallel() | ||
| { | ||
| Memory2D<ComplexNumber> matrixAsMemory = MatrixTwo; | ||
| ParallelHelper.ForEach(matrixAsMemory, new MultiplyByScalarAction<ComplexNumber>(Real.Pi)); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| // <copyright file="Assert.cs" company="Mathematics.NET"> | ||
| // Mathematics.NET | ||
| // https://github.com/HamletTanyavong/Mathematics.NET | ||
| // | ||
| // MIT License | ||
| // | ||
| // Copyright (c) 2023 Hamlet Tanyavong | ||
| // | ||
| // Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| // of this software and associated documentation files (the "Software"), to deal | ||
| // in the Software without restriction, including without limitation the rights | ||
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| // copies of the Software, and to permit persons to whom the Software is | ||
| // furnished to do so, subject to the following conditions: | ||
| // | ||
| // The above copyright notice and this permission notice shall be included in all | ||
| // copies or substantial portions of the Software. | ||
| // | ||
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| // SOFTWARE. | ||
| // </copyright> | ||
|
|
||
| using CommunityToolkit.HighPerformance; | ||
|
|
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| namespace Mathematics.NET.Tests; | ||
|
|
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| public sealed class Assert<T> | ||
| where T : IComplex<T> | ||
| { | ||
| public static void AreApproximatelyEqual(T expected, T actual, Real delta) | ||
| { | ||
| if (T.IsNaN(expected) && T.IsNaN(actual) || T.IsInfinity(expected) && T.IsInfinity(actual)) | ||
| { | ||
| return; | ||
| } | ||
|
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| if (!Precision.AreApproximatelyEqual(expected, actual, delta)) | ||
| { | ||
| Assert.Fail($$""" | ||
| Actual value does not fall within the specifed margin of error, {{delta}}: | ||
| Expected: {{expected}} | ||
| Actual: {{actual}} | ||
| """); | ||
| } | ||
| } | ||
|
|
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| public static void ElementsAreApproximatelyEqual(Span2D<T> expected, Span2D<T> actual, Real delta) | ||
| { | ||
| if (expected.Height != actual.Height || expected.Width != actual.Width) | ||
| { | ||
| Assert.Fail($"Dimensions of the actual matrix, [{actual.Height}, {actual.Width}], does not match the dimensions of the expected matrix, [{expected.Height}, {expected.Width}]"); | ||
| } | ||
|
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| for (int i = 0; i < expected.Height; i++) | ||
| { | ||
| for (int j = 0; j < expected.Width; j++) | ||
| { | ||
| if (T.IsNaN(expected[i, j]) && T.IsNaN(actual[i, j]) || T.IsInfinity(expected[i, j]) && T.IsInfinity(actual[i, j])) | ||
| { | ||
| continue; | ||
| } | ||
|
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| if (!Precision.AreApproximatelyEqual(expected[i, j], actual[i, j], delta)) | ||
| { | ||
| Assert.Fail($$""" | ||
| Actual value at row {{i}} and column {{j}} does not fall within the specifed margin of error, {{delta}}: | ||
| Expected: {{expected[i, j]}} | ||
| Actual: {{actual[i, j]}} | ||
| """); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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