Linear Algebra code value

Question

1.00/5 (2 votes)

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What does this code do?

C#

public class Epsilon
    {
        public static double Value
        {
            get { return 1.0e-5; }
        }
    }

Posted 12-Oct-12 4:54am

Member 8686696

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Member 8686696 12-Oct-12 10:55am

i understand that it'll return the 1.0e-5, is it a common value when dealing with Matrices?

Herman<T>.Instance 12-Oct-12 11:00am

then why ask this question?

you have a readonly property in stead of a const or something like that.

3 solutions

Solution 1

It just returns 0.00001 (It is just a different notation for that value)

Posted 12-Oct-12 5:06am

fjdiewornncalwe

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lewax00 · Accepted Answer · 2012-10-12T06:11:00

To add a little to Marcus's solution, it's scientific notation, 'e' is basically 'times 10 to the power of' so in this case, it's 1.0 times 10^(-5).

(This next part is just an educated guess)

Epsilon is sometimes used in mathematics to represent a minimal change from one number to another (e.g. 1 + epsilon is just a tiny bit above 1), but since computers are discrete I'm guessing 1.0e-5 has just been arbitrarily chosen as a small value that will behave similar to epsilon in mathematics, but for discrete values.

It's really hard to tell you more without some context. We don't know what the rest of the code looks like.

CPallini · Accepted Answer · 2012-10-12T07:42:00

Solution 3

That's the OOP way to say:

C#

const double EPSILON = 0.00005;

:-)

Posted 12-Oct-12 7:42am

CPallini

Comments

SameerNA 12-Oct-12 15:31pm

+5 from me

Monjurul Habib 15-Oct-12 16:42pm

5!