using System;

public class Program

{

    public static void Main()

    {

            double? nullNum1 = null;

            double? nullNum2 = null;

            double num1 = 1.1;

            double num2 = 1.2;

​

            Console.WriteLine(FloatComp(nullNum1, nullNum2));

            Console.WriteLine(FloatComp(num1, num2));

            Console.WriteLine(FloatComp(nullNum1, num1));

    }

    public static int FloatComp(double? aNumber, double? aNumber2)

    {

        double aNumberVal = aNumber.GetValueOrDefault(double.MinValue);

        double aNumberVal2 = aNumber2.GetValueOrDefault(double.MinValue);

​

        double xDeviation = 0.000001;

​

        if (Math.Abs(aNumberVal - aNumberVal2) < xDeviation)

            return 0;

​

        if (aNumberVal > aNumberVal2)

            return 1;

        return -1;

    }

}