Question

How to round a number to the next power of 2 in C#

Answer 1

using System;

class Program
{
    static int RoundToNextPowerOf2(int n) {
        if (n <= 0)
            return 1;

        return (int)Math.Pow(2, Math.Ceiling(Math.Log(n, 2)));
    }

    static void Main()
    {
        int num = 21;
        Console.WriteLine($"Next power of 2: {RoundToNextPowerOf2(num)}");
    }
}



/*
run:

Next power of 2: 32

*/

 

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