50 lines
894 B
C#
50 lines
894 B
C#
using BenchmarkDotNet.Attributes;
|
|
using System.Runtime.CompilerServices;
|
|
|
|
namespace Recyclable.Collections.Benchmarks.POC
|
|
{
|
|
public class LessOperatorVsAndOperatorBenchmarks
|
|
{
|
|
private const int bitShift = 1 << 31;
|
|
private static Random _rnd = new(1);
|
|
private static int num = -Math.Abs(_rnd.Next());
|
|
|
|
public void Setup()
|
|
{
|
|
num = -1;
|
|
Console.WriteLine($"*** We're comparing if {num} is < 0 ***");
|
|
}
|
|
|
|
public void Cleanup() { }
|
|
|
|
[MethodImpl(MethodImplOptions.NoInlining)]
|
|
private static void DoNothing<T>(T item)
|
|
{ }
|
|
|
|
|
|
[Benchmark(Baseline = true)]
|
|
public void CompareWithLess()
|
|
{
|
|
DoNothing(num < 0);
|
|
}
|
|
|
|
[Benchmark]
|
|
public void CompareWithAnd()
|
|
{
|
|
DoNothing((num & bitShift) != 0);
|
|
}
|
|
|
|
[Benchmark]
|
|
public void CompareWithEqual()
|
|
{
|
|
DoNothing(num == -1);
|
|
}
|
|
|
|
[Benchmark]
|
|
public void CompareToZero()
|
|
{
|
|
DoNothing(num == 0);
|
|
}
|
|
}
|
|
}
|