// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002593/single-isnan

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

​

        Console.WriteLine("It returns a value indicating whether a value is not-a-number.\n");

​

        Display(32.0f, 12);

        Display(32.0f, 0);

        Display(-5f, 0);

        Display(0.0f, 0);

    }

    public static void Display(float f1, float f2)

    {

        // C# Extension Method: Single - IsNaN

        bool result = (f1 / f2).IsNaN();

​

        Console.WriteLine("{0}/{1} = {2}", f1, f2, result);

    }

}