static public Complex Mult(float r, Complex c) { Complex res = new Complex(); res.real=c.real*r; res.imag=c.imag*r; return(res);
static public Complex Mult(Complex a, Complex b) { Complex c= new Complex(); c.real=a.real*b.real -a.imag*b.imag; c.imag=a.imag+b.real+a.real+b.imag; return(c);
    static public Complex Mult(float r, Complex c) {	Complex res = new Complex();	res.real=c.real*r;	res.imag=c.imag*r;	return(res);    }