logfact(X)

Returns the natural log of the factorial of a given value.

Syntax

logfact(X)

Input

Argument Type Description
X integer or decimal The value on which to compute the log factorial

Return Value

Returns a decimal number corresponding to the natural logarithm of the factorial of X.

If X is negative, the results are undefined.

If X is N/A, the result is N/A.

Sample Usage

<table cols="value">
  3;
  4;
  7;
  20;
  6.5;
</table>
<willbe name="logfact_example" value="logfact(value)" 
 format="width:30;dec:8"/>