Reference > Functions reference > Number functions > Lg

Lg

Returns the base-2 logarithm of a number.

Format

Lg(number)

Parameters

number - any numeric expression or field containing a numeric expression

Data type returned

number

Originated in

FileMaker Pro 7.0

Description

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

Equation

Example 1

Lg(1) = 0

Lg(2) = 1

Lg(32) = 5

Lg