sign(var x)

Calculates the sign of x .

Parameters:

x - any number.

Returns:

-1 if x < 0
0 if x == 0
1 if x > 0

Speed:

Fast

Example:

x = sign(2); // x is now 1
x = sign(-599); // x is now -1 
x = sign(0); // x is now 0

See also:

abs ► latest version online