Documentation/How Tos/Calc: GAMMALN function
From Apache OpenOffice Wiki
Returns the natural logarithm of the gamma function.
- returns the natural logarithm of Γ(x), the gamma function.
- x must be greater than 0.
- returns approximately 1.79.
- The forthcoming international standard ODFF categorises this as a mathematical function, and includes a GAMMA function which Calc does not currently implement.