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ScaleB.cs
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ScaleB.cs
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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using BenchmarkDotNet.Attributes;
namespace System.MathBenchmarks
{
public partial class Single
{
// Tests MathF.ScaleB(float, int) over 5000 iterations for the domain x: -1, +1; y: +0, +5000
private const float scaleBDeltaX = -0.0004f;
private const int scaleBDeltaY = 1;
private const float scaleBExpectedResult = float.NegativeInfinity;
[Benchmark]
public void ScaleB() => ScaleBTest();
public static void ScaleBTest()
{
float result = 0.0f, valueX = -1.0f;
int valueY = 0;
for (int iteration = 0; iteration < MathTests.Iterations; iteration++)
{
result += MathF.ScaleB(valueX, valueY);
valueX += scaleBDeltaX; valueY += scaleBDeltaY;
}
float diff = MathF.Abs(scaleBExpectedResult - result);
if (float.IsNaN(result) || (diff > MathTests.SingleEpsilon))
{
throw new Exception($"Expected Result {scaleBExpectedResult,10:g9}; Actual Result {result,10:g9}");
}
}
}
}