3.5.1.3.41 Gammaln

Natural Log of the Gamma Function

The natural log of the Gamma function has the following form:

gammaln(x)

This function returns the natural log of the gamma function \(\Gamma\)(x), where \(\Gamma\)(x) is given by:

\[\Gamma(x) = \int_{0}^{+\infty}t^{x-1}e^{-t}dt\]