// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002429/int64-int64bitstodouble

​

// @nuget: Z.ExtensionMethods

​

using System;

public class Program

{

    const string formatter = "{0,20}{1,27:E16}";

​

    public static void LongBitsToDouble(long argument)

    {

        //C# Extension Method: Int64 - Int64BitsToDouble

        double doubleValue = argument.Int64BitsToDouble();

​

        Console.WriteLine(formatter, String.Format("0x{0:X16}", argument), doubleValue);

    }

​

    public static void Main()

    {

        Console.WriteLine(formatter, "long argument", "double value");

        Console.WriteLine(formatter, "-------------", "------------");

​

        LongBitsToDouble(0);

        LongBitsToDouble(0x3FF0000000000000);

        LongBitsToDouble(0x402E000000000000);

        LongBitsToDouble(0x406FE00000000000);

        LongBitsToDouble(0x41EFFFFFFFE00000);

        LongBitsToDouble(0x3F70000000000000);

        LongBitsToDouble(0x3DF0000000000000);

        LongBitsToDouble(0x0000000000000001);

        LongBitsToDouble(0x000000000000FFFF);

        LongBitsToDouble(0x0000FFFFFFFFFFFF);

        LongBitsToDouble(unchecked((long)0xFFFFFFFFFFFFFFFF));

        LongBitsToDouble(unchecked((long)0xFFF0000000000000));

        LongBitsToDouble(0x7FF0000000000000);

        LongBitsToDouble(unchecked((long)0xFFEFFFFFFFFFFFFF));

        LongBitsToDouble(0x7FEFFFFFFFFFFFFF);

        LongBitsToDouble(long.MinValue);

        LongBitsToDouble(long.MaxValue);

    }

}