Flash CS3 Documentation 
Flash CS3 Documentation |
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| ActionScript 2.0 Language Reference > ActionScript classes > Math > LOG2E (Math.LOG2E property) | |||
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public static LOG2E : Number
A mathematical constant for the base-2 logarithm of the constant e (Math.E), expressed as log2e, with an approximate value of 1.442695040888963387.
The Math.log method computes the natural logarithm of a number. Multiply the result of Math.log() by Math.LOG2E obtain the base-2 logarithm.
Availability: ActionScript 1.0; Flash Player 5 - In Flash Player 4, the methods and properties of the Math class are emulated using approximations and might not be as accurate as the non-emulated math functions that Flash Player 5 supports.
This example shows how to obtain the base-2 logarithm of a number:
trace(Math.log(16) * Math.LOG2E); // Output: 4
Flash CS3