PseudoGamma

EulerDiGamma( x )

Returns Euler's digamma function; just calls digamma from SpecialFunctions.

EulerGamma( x )

Returns Euler's gamma function; just calls gamma from SpecialFunctions.

HadamardGamma( x :: Number )

Provides Hadamard's gamma function.

LuschnyFactorial( x :: Number )

Provides Luschny's factorial function.