Name: log2

Type: function

Syntax: the log2 of <number> 

Syntax: log2(<number>)

Summary: <return|Returns> the base-2 logarithm of a number.

Introduced: 1.0

OS: mac,windows,linux,ios,android

Platforms: desktop,server,web,mobile

Example:
log2(8) -- returns 3

Example:
log2(0.125) -- returns -3

Parameters:
number: A positive number, or an expression that evaluates to a positive number.

Returns: The <log2> function <return|returns> a number.

Description:
Use the <log2> <function> to obtain a base-2 logarithm.

The base-2 logarithm of a <number> is the power to which 2 must be raised to obtain the <number> : 2^log2(<number>) is equal to number.

References: function (control_st), ln1 (function), return (glossary)

Tags: math
