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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.
namespace System.Numerics.Hashing
{
// Please change the corresponding file in corefx if this is changed.
internal static class HashHelpers
{
public static int Combine(int h1, int h2)
{
// The jit optimizes this to use the ROL instruction on x86
// Related GitHub pull request: dotnet/coreclr#1830
uint shift5 = ((uint)h1 << 5) | ((uint)h1 >> 27);
return ((int)shift5 + h1) ^ h2;
}
}
}
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