Jcd.BitManipulation

Jcd.BitManipulation.Algorithms.UInt64AlgorithmsExtensions

UInt64AlgorithmsExtensions.CountLeadingZeros(this ulong) Method

Computes the number of sequentially zeroed bits occupying the most significant bit positions.

public static int CountLeadingZeros(this ulong number);

Parameters

number System.UInt64

The number to evaluate.

Returns

System.Int32 The count of sequentially zeroed bits occupying the most significant bit positions.

Example

ulong v = 0x7FFFFFFF_FFFFFFFF;
Console.WriteLine($"{v.CountLeadingZeros()}"); // outputs: 1

v = 0x3FFFFFFF_FFFFFFFF;
Console.WriteLine($"{v.CountLeadingZeros()}"); // outputs: 2

v = 1;
Console.WriteLine($"{v.CountLeadingZeros()}"); // outputs: 63