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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 Microsoft.Xunit.Performance;
using System;
using System.Runtime.CompilerServices;
using Xunit;
[assembly: OptimizeForBenchmarks]
[assembly: MeasureInstructionsRetired]
namespace Benchstone.BenchI
{
public static class Fib
{
#if DEBUG
public const int Iterations = 1;
#else
public const int Iterations = 3500;
#endif
const int Number = 24;
static int Fibonacci(int x) {
if (x > 2) {
return (Fibonacci(x - 1) + Fibonacci(x - 2));
}
else {
return 1;
}
}
[MethodImpl(MethodImplOptions.NoInlining)]
static bool Bench() {
int fib = Fibonacci(Number);
return (fib == 46368);
}
[Benchmark]
public static void Test() {
foreach (var iteration in Benchmark.Iterations) {
using (iteration.StartMeasurement()) {
for (int i = 0; i < Iterations; i++) {
Bench();
}
}
}
}
static bool TestBase() {
bool result = true;
for (int i = 0; i < Iterations; i++) {
result &= Bench();
}
return result;
}
public static int Main() {
bool result = TestBase();
return (result ? 100 : -1);
}
}
}
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