Returns a Double specifying the natural logarithm of a number.
Syntax
Log(number)
The required number argument is a Double or any valid numeric expression greater than zero.
Remarks
The natural logarithm is the logarithm to the base e. E is approximately 2.718282.
You can calculate base-n logarithms for any number x by dividing the natural logarithm of x by the natural logarithm of n as follows:
Logn(x) = Log(x) / Log(n)
The following example illustrates a formula field that calculates base-10 logarithms for a number field X:
Log([X]) / Log(10)