public class PiOver8BadSeries extends BadSeries
{
    public double sum(double a, double b) {
	double total = 0.0;
	while (!(a > b)) {
	    total += value(a);
	    a = result(a);
	}
	return total;
    }

     public double value(double a) {
    	return 1.0 / (a * (a + 2));
     }

    public double result(double a) {
	return a + 4.0;
    }
}