package revpend1;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class Complex {
  double re,im;

  public Complex() {
  }

  public Complex(double re,double im){
    this.re=re;
    this.im=im;
  }

  public Complex add(Complex c1){
    Complex rs=new Complex();
    rs.re = re + c1.re;
    rs.im = im + c1.im;
    return rs;
  }

  public Complex mlt(Complex c1){
    Complex rs=new Complex();
    rs.re = re*c1.re - im*c1.im;
    rs.im = re*c1.im + im*c1.re;
    return rs;
  }

  public Complex prod1 (Complex c1,Complex c2,Complex c3,Complex c4){
    Complex rs=new Complex();
    rs = c1.add(c2);
    rs = rs.add(c3);
    rs = rs.add(c4);
    return rs;
  }

  public Complex prod2 (Complex c1,Complex c2,Complex c3,Complex c4){
    Complex rs=new Complex();
    rs = c1.mlt(c2);
    rs = rs.add(c2.mlt(c3));
    rs = rs.add(c3.mlt(c4));
    rs = rs.add(c4.mlt(c1));
    rs = rs.add(c1.mlt(c3));
    rs = rs.add(c2.mlt(c4));
    return rs;
  }

  public Complex prod3 (Complex c1,Complex c2,Complex c3,Complex c4){
    Complex rs=new Complex();
    Complex rt=new Complex();
    rt = c1.mlt(c2);
    rs = rt.mlt(c3.add(c4));
    rt = c3.mlt(c4);
    rs = rs.add( rt.mlt(c2.add(c1)));
    return rs;
  }

  public Complex prod4 (Complex c1,Complex c2,Complex c3,Complex c4){
    Complex rs=new Complex();
    rs=c1.mlt(c2.mlt(c3.mlt(c4)));
    return rs;
  }

  public void out(){
    System.out.println("re:"+re+" im:"+im);
  }
}