Returns the natural logarithm of its argument. This produces slightly more accurate results than the otherwise equivalent expression log(e,(argument)).
Format: Ln(exprn)
Arguments:
Return type: float
Error conditions: Returns 'Bottom' if exprn evaluates to 'Bottom', or if exprn is not positive.
Example:
value = ln(time)
; Sets value to the natural logarithm of the player's statetime.