import org.apache.commons.math3.util.Precision;

public class PrecisionTest {


    public static void main(String[] args) {


        double x = 4.0;
        double y = -1.0;

        boolean isEqual = Precision.equals(x, y , 10E-14);
        System.out.println(isEqual);

        System.out.println(Precision.compareTo(x, y , 10E-14));

        System.out.println(x==y);

    }

}