SpecialFunctionsDigamma Method

The digamma or psi function, defined as Gamma'(z)/Gamma(z). A Double.NaN is return for all non-positive integers x = { 0, -1, -2, ... }.

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4

Syntax

public static double Digamma(
	double x
)

Public Shared Function Digamma ( 
	x As Double
) As Double

public:
static double Digamma(
	double x
)

static member Digamma : 
        x : float -> float

Double
The digamma function, defined as the logrithmic derivative of the gamma function.