Where do I find the machine epsilon in C#?

Question

The machine epsilon is canonically defined as the smallest number which added to one, gives a result different from one.

There is a Double.Epsilon but t

Answer 1

It's(on my machine):

   1.11022302462516E-16

You can easily calculate it:

        double machEps = 1.0d;

        do {
           machEps /= 2.0d;
        }
        while ((double)(1.0 + machEps) != 1.0);

        Console.WriteLine( "Calculated machine epsilon: " + machEps );

Edited:

I calcualted 2 times epsilon, now it should be correct.