// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002320/double-abs

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    public static void Main()

    {

        double[] doubles = { Double.MaxValue, 16.354e-17, 15.098123, 0, 

                           -19.069713, -15.058e18, Double.MinValue };

        foreach (double value in doubles)

        {

            // C# Extension Method: Double - Abs

            Console.WriteLine("Abs({0}) = {1}", value, value.Abs());

        }

    }

}