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Sign Function
Math Complex Class

Public Function Sign( _
    ByVal vX As Variant _
    ) As Variant

Sign of a real or complex number.

    Sign(-2) = -1
    Sign(0) = 0
    Sign(3) = 1
    Sign("0|3") = "0|-1"
    Sign("4|5") = "0.624695047554424|0.78086880944303"
    Sign("4|-5") = "0.624695047554424|-0.78086880944303"
    IsNull(Sign(Null)) = True
See also:
    Absolute Function
    Neg Function
    Conj Function
    Sgn Function (Visual Basic)
vX: The number whose sign is returned. Function returns Null if vX is Null or cannot be fixed up to a real or complex number (as defined by the ComplexStringToReals function). Complex numbers are represented within strings as "R|I" where R is the real part and I is the imaginary part.

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