Get next largest power of two

nextpoweroftwo.cs

public static class IntExtensions
{
    public static uint GetNextPowerOfTwo(this uint input)
    {
        --input;
        input |= input >> 1;
        input |= input >> 2;
        input |= input >> 4;
        input |= input >> 8;
        input |= input >> 16;
        return input + 1;
    }

    public static ulong GetNextPowerOfTwo(this ulong input)
    {
        --input;
        input |= input >> 1;
        input |= input >> 2;
        input |= input >> 4;
        input |= input >> 8;
        input |= input >> 16;
        input |= input >> 32;
        return input + 1;
    }
}

This has been made redundant by System.Numerics.BitOperations.RoundUpToPowerOf2() in .NET 6:

https://docs.microsoft.com/en-us/dotnet/api/system.numerics.bitoperations.rounduptopowerof2?view=net-6.0#System_Numerics_BitOperations_RoundUpToPowerOf2_System_UInt64_