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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.Diagnostics;
using System.Numerics;
using System.Runtime.CompilerServices;
namespace System.Buffers
{
internal static class Utilities
{
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static int SelectBucketIndex(int bufferSize)
{
Debug.Assert(bufferSize >= 0);
uint bits = ((uint)bufferSize - 1) >> 4;
return 32 - BitOperations.LeadingZeroCount(bits);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
internal static int GetMaxSizeForBucket(int binIndex)
{
int maxSize = 16 << binIndex;
Debug.Assert(maxSize >= 0);
return maxSize;
}
}
}
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