WorksheetFunction.GammaLn_Precise method (Excel)
Returns the natural logarithm of the gamma function, Γ(x).
Syntax
expression.GammaLn_Precise (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, the GammaLn_Precise method generates an error.
If x ≤ 0, the GammaLn_Precise method generates an error.
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
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