public boolean equals(Object obj) {
if (obj == null || !(obj instanceof Complex)) return false;
Complex y = (Complex) obj;
return y.unit() == Unit.Empty
&& (Double.doubleToLongBits(real) == Double.doubleToLongBits(y.reValue()))
&& (Double.doubleToLongBits(imag) == Double.doubleToLongBits(y.imValue()));
}
public Numeric add(Object y, int k) {
if (y instanceof Complex) {
Complex yc = (Complex) y;
if (yc.dimensions() != Dimensions.Empty) throw new ArithmeticException("units mis-match");
return new DComplex(real + k * yc.reValue(), imag + k * yc.imValue());
}
return ((Numeric) y).addReversed(this, k);
}
public Numeric mul(Object y) {
if (y instanceof Complex) {
Complex yc = (Complex) y;
if (yc.unit() == Unit.Empty) {
double y_re = yc.reValue();
double y_im = yc.imValue();
return new DComplex(real * y_re - imag * y_im, real * y_im + imag * y_re);
}
return Complex.times(this, yc);
}
return ((Numeric) y).mulReversed(this);
}