Gamma Methods 
The Gamma type exposes the following members.
Name  Description  

Digamma 
Digamma function.
 
Function 
Gamma function of the specified value.
 
Inverse 
Inverse of the complemented
incomplete Gamma integral (UpperIncomplete, Q).
 
InverseLowerIncomplete 
Inverse of the
incomplete Gamma integral (LowerIncomplete, P).
 
InverseUpperIncomplete 
Inverse of the complemented
incomplete Gamma integral (UpperIncomplete, Q).
 
Log(Double) 
Natural logarithm of the gamma function.
 
Log(Double, Int32) 
Natural logarithm of the multivariate Gamma function.
 
LowerIncomplete 
Lower incomplete regularized gamma function P
(a.k.a. the incomplete Gamma function).
 
Multivariate 
Multivariate Gamma function
 
Stirling 
Gamma function as computed by Stirling's formula.
 
Trigamma 
Trigamma function.
 
UpperIncomplete 
Upper incomplete regularized Gamma function Q
(a.k.a the incomplete complemented Gamma function)
