/******************************************************************************
 * This program demonstrates floating point error.
 * 
 * Copyright © 2021 Richard Lesh.  All rights reserved.
 *****************************************************************************/

import org.pureprogrammer.Utils;

public class FloatingPointError {

    public static void main(String[] args) {
        double oneThird = 1. / 3.;
        System.out.println(Utils.format("1/3: {0:.16f}", oneThird));
        System.out.println(Utils.format("one: {0:.16f}", oneThird * 3.0));
        System.out.println(Utils.format("three: {0:.16f}", oneThird * 9.0));
        System.out.println(Utils.format("hundred: {0:.16f}", oneThird * 300.0));

        double twoTenths = 0.2;
        double sum = 0.0;
        for (int x = 0; x < 1000; ++x) {
            sum += twoTenths;
        }
        System.out.println(Utils.format("twoTenths: {0:.16f}", twoTenths));
        System.out.println(Utils.format("sum: {0:.16f}", sum));
        System.out.println(Utils.format("200: {0:.16f}", twoTenths * 1000.));
    }
}