log2

The log2 function returns the (base-2) logarithm function.

Syntax

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    log2( X )

Arguments

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• X: A real number greater than 0.

Results

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• The logarithm is the base-2 logarithm: the inverse of the exponential function (exp) with base 2.
• null if the argument is negative or null or can’t be converted to a real value.

Examples

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This returns 4:

print log2( 16 )