Complex as scala.math.Numeric trait.
Complex as scala.math.Fractional trait.
Ordering for complex numbers: orders lexicographically first on the real, then on the imaginary part of the number.
Implicit object providing scala.math.Fractional capabilities.
Constant Complex(0,1).
Constant Complex(NaN, NaN).
Constant Complex(1,0).
Constant Complex(0,0).