MACROMEDIA FLEX-FLEX ACTIONSCRIPT LANGUAGE Reference page 352

Parameters
A number or expression with a value greater than 0.
x
Returns
The logarithm of parameter
Description
Method; returns the logarithm of parameter
Example
The following example displays the logarithm for three numerical values.
trace(Math.log(0)); // output: -Infinity
trace(Math.log(1)); // output: 0
trace(Math.log(2)); // output: 0.693147180559945
Math.LN2
Availability
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.
Usage
Math.LN2:Number
Description
Constant; a mathematical constant for the natural logarithm of 2, expressed as log
approximate value of 0.6931471805599453.
Math.LN10
Availability
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.
Usage
Math.LN10:Number
Description
Constant; a mathematical constant for the natural logarithm of 10, expressed as log
approximate value of 2.302585092994046.
Example
This example traces the value of
trace(Math.LN10);
// output: 2.30258509299405
352 Chapter 6: ActionScript Core Classes
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x
.
x
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Math.LN10
2, with an
e
10, with an
e