Log

Returns the base-10 (common) logarithm of a number.

Format 

Log ( number )

Parameters 

number - any positive numeric expression or field containing a numeric expression

Data type returned 

number

Originated in version 

6.0 or earlier

Description 

Number can be any positive value. Negative values return an error. For 0, the Log function returns nothing because this value is out of the acceptable range.

Equation

Example 1 

Log(1) returns 0.

Log(100) returns 2.