Test.java

public class Test {
    public static void main(String... args) {
	double i = 1.0d;
	double d;
	while (true) {
	    d = i / 2;
	    if (d * 2 != i)
		throw new RuntimeException(d + " * 2 != " + i);
	    i = d;
	}
    }
}