Sfun.LogGamma Method

Returns the logarithm of the Gamma function of the absolute value of a double.

public static double LogGamma(
double x
);

Parameters

x: A double value.

Return Value

A double value specifying the natural logarithm of the Gamma function of . If x is a negative integer, the result is NaN.

Remarks

Method LogGamma computes ${\rm ln} \left| {\Gamma (x)} \right|$ . See Gamma for the definition of $\Gamma(x)$ .

The Gamma function is not defined for integers less than or equal to zero. Also, $\left| x \right|$ must not be so large that the result overflows. Neither should x be so close to a negative integer that the accuracy is worse than half precision.

$Plot of LogGamma(x)$

Sfun.LogGamma Method

Parameters

Return Value

Remarks

See Also