import java.lang.Math;

public class testInf
{
    public static void main(String[] args)
    {
	double x, y, z;

	test(1.0, 0.0);		// generate a positive Infinity
	test(-1.0, 0.0);	// generate a negative Infinity

    }

    public static void test(double x, double y)
    {
	double z = x/y;

	System.out.println("This line should read: " + x + "/" + y + " -> Inf");
	System.out.println(x + "/" + y + " -> " + z);

	if (z != z)
	   System.out.println("Incorrect comparison of Infinities with !=");
	if (z == z)
	   System.out.println("Correct comparison of Infinities with ==");

	if (!Double.isInfinite(z))
	   System.out.println("Incorrect test of Infinities with isInfinite()");
	if (Double.isInfinite(z))
	   System.out.println("Correct test of Infinities with isInfinite()");

    }
}