code: public static void convert(Complex_F64 input , ComplexPolar_F64 output ) {
          output.r = input.getMagnitude();
          output.theta = Math.atan2(input.imaginary, input.real);
      }
docs: <p>
  Converts a complex number into polar notation.
  </p>
  
  @param input Standard notation
  @param output Polar notation