Syntax: sign(value)
Description: Returns the sign of value.
Group: general
Note: The sign of a complex number is calculated as sign(x) = x./abs(x)
Example:
sign(-10) = -1sign(10) = 1sign(3+2i) = 0.832 + 0.555i
Also see: abs
Implemented in: LambdaSIGN.java