WorksheetFunction.GammaLn Method

Excel Developer Reference

Returns the natural logarithm of the gamma function, Γ(x).

Syntax

expression.GammaLn(Arg1)

expression   A variable that represents a WorksheetFunction object.

Parameters

Name	Required/Optional	Data Type	Description
Arg1	Required	Double	X - the value for which you want to calculate GAMMALN.

Return Value
Double

Remarks

• If x is nonnumeric, GAMMALN returns the #VALUE! error value.

• If x ≤ 0, GAMMALN returns the #NUM! error value.

• The number e raised to the GAMMALN(i) power, where i is an integer, returns the same result as (i - 1)!.

• GAMMALN is calculated as follows:

  

  where:

  

See Also

• WorksheetFunction Object
• WorksheetFunction Object Members