ph-math/src/main/java/com/helger/numbercruncher/mathutils/Complex.java
public Complex add (final Complex z)
  {
    return new Complex (m_fReal + z.real (), m_fImaginary + z.imaginary ());
  }
public Complex add (final Complex z)
  {
    return new Complex (m_fReal + z.real (), m_fImaginary + z.imaginary ());
  }
Add another complex number to this one.

@param z
the other complex number
@return a new complex number that is the sum