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57 lines
1.7 KiB
57 lines
1.7 KiB
// Copyright (c) Six Labors.
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// Licensed under the Apache License, Version 2.0.
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using System;
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using BenchmarkDotNet.Attributes;
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namespace SixLabors.ImageSharp.Benchmarks.General.BasicMath
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{
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public class ClampSpan
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{
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private static readonly int[] A = new int[2048];
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private static readonly int[] B = new int[2048];
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public void Setup()
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{
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var r = new Random();
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for (int i = 0; i < A.Length; i++)
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{
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int x = r.Next();
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A[i] = x;
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B[i] = x;
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}
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}
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[Benchmark(Baseline = true)]
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public void ClampNoIntrinsics()
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{
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for (int i = 0; i < A.Length; i++)
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{
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ref int x = ref A[i];
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x = Numerics.Clamp(x, 64, 128);
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}
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}
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[Benchmark]
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public void ClampVectorIntrinsics()
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{
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Numerics.Clamp(B, 64, 128);
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}
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}
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}
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// 23-11-2020
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// ##########
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//
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// BenchmarkDotNet = v0.12.1, OS = Windows 10.0.19041.630(2004 /?/ 20H1)
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// Intel Core i7-8650U CPU 1.90GHz (Kaby Lake R), 1 CPU, 8 logical and 4 physical cores
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// .NET Core SDK=5.0.100
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// [Host] : .NET Core 3.1.10 (CoreCLR 4.700.20.51601, CoreFX 4.700.20.51901), X64 RyuJIT
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// DefaultJob : .NET Core 3.1.10 (CoreCLR 4.700.20.51601, CoreFX 4.700.20.51901), X64 RyuJIT
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//
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//
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// | Method | Mean | Error | StdDev | Ratio |
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// |---------------------- |-----------:| ---------:| ----------:| ------:|
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// | ClampNoIntrinsics | 3,629.9 ns | 70.80 ns | 129.47 ns | 1.00 |
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// | ClampVectorIntrinsics | 131.9 ns | 2.68 ns | 6.66 ns | 0.04 |
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