DESCRIPTION

This node will return True Gamma (Tgamma), Logarithmic Gamma (Lgamma) and Logarithmic Derivate Gamma (Digamma) of Base input.

more on Gamma functions at:

Tgamma http://linux.die.net/man/3/tgamma
Lgamma http://reference.wolfram.com/mathematica/ref/LogGamma.html
Digamma http://en.wikipedia.org/wiki/Digamma_function

ATTRIBUTE

Name: operation (opt)
Type: enum
Default: 1
Note: Specifies type of operation. type could be :

0: no operation – input value(s) pass through node without changes
1: Tgamma (default) – computes true gamma of base value
2: Lgamma – computes the natural logarithm of the absolute value of the gamma function of base value.
3: Digamma – compute the logarithmic derivative of the gamma function

Name: base (bs)
Type: point
Default: 1.0, 1.0, 1.0
Note: The base (input) value.

Name: output (out)
Type: point
Default: 1.0, 1.0, 1.0
Note: The output value