Ln
Purpose
Returns the base-e (natural) logarithm of a number.
Format
Ln(number)
Parameters
number - any numeric
expression or
field containing a numeric expression
Data type returned
number
Originated in
FileMaker Pro 6.0 or earlier
Description
Number can be any positive value. Negative values and 0 return an error. The Exp function is the inverse of the Ln function.
Examples
Ln(2.7182818) returns .99999998....
Ln(Exp(5)) returns 5.
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