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MYSQL

LOG2()


Description

The LOG2( ) function returns the base2 logarithm of X.

This function has the form:

SELECT LOG2(x)
Parameter Description
x An expression

Return Value

The base2 logarithm of X

Examples

The following example shows the basic use of this function:

mysql> SELECT LOG2(65536);
-> 16
mysql> SELECT LOG2(-100);
-> NULL


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