Math.sign(number) +
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SWiSH Player Support
SWF4 or later - Supported Internally

Syntax
Math.sign(number)

Arguments
All numeric numbers or expressions.
number: Value

Returns
The sign of the value.

Description
if (number < 0) returns -1.
if (number == 0) returns 0.
if (number > 0) returns +1.

Sample
Math.sign(3
.8);   // returns +1
Math.sign(0
);   // returns 0
Math.sign(-9
);   // returns -1

Flash MX Differences
This function is not implemented in Flash MX.