logGamma

logGamma, function

def autodiff pure logGamma(x: number): number

Returns the natural logarithm of the Gamma function at x.

• x: input value, must be positive.

Examples

show table "logGamma(3)" with
  logGamma(3) as "Value"

This produces the following table:

Remarks

For any positive integer $n$, we have $\Gamma(n) = (n-1)!$