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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.
namespace System.Numerics
{
/// <summary>Defines a number that is represented in a base-2 format.</summary>
/// <typeparam name="TSelf">The type that implements the interface.</typeparam>
public interface IBinaryNumber<TSelf>
: IBitwiseOperators<TSelf, TSelf, TSelf>,
INumber<TSelf>
where TSelf : IBinaryNumber<TSelf>?
{
/// <summary>Gets an instance of the binary type in which all bits are set.</summary>
static virtual TSelf AllBitsSet => ~TSelf.Zero;
/// <summary>Determines if a value is a power of two.</summary>
/// <param name="value">The value to be checked.</param>
/// <returns><c>true</c> if <paramref name="value" /> is a power of two; otherwise, <c>false</c>.</returns>
static abstract bool IsPow2(TSelf value);
/// <summary>Computes the log2 of a value.</summary>
/// <param name="value">The value whose log2 is to be computed.</param>
/// <returns>The log2 of <paramref name="value" />.</returns>
static abstract TSelf Log2(TSelf value);
}
}
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