Computing the F test of two sets

Question

Given two arrays of doubles, how Can I compute the F Test?

(F test is defined here: http://www.excelfunctions.net/Excel-Ftest-Function.html)

I am looking for answer like this one:

http://stackoverflow.com/questions/1095650/how-can-i-efficiently-calculate-the-binomial-cumulative-distribution-function

Answer 1

Just implement the algorithm as described on Wikipedia. It's not difficult. Asking people for source code could be interpreted as lazy.