Java - Math.expm1() Examples

package com.logicbig.example.math;

public class Expm1Example {

    public static void main(String... args) {
        findExpm1(21.53);
        findExpm1(2.81);
        findExpm1(-3.42);
        findExpm1(-19.87);
        findExpm1(12.138);
        findExpm1(11.97);
    }

    private static void findExpm1(double v) {
        double expm = Math.expm1(v);
        System.out.printf("Math.expm1(%s) = %.2f%n", v, expm);
    }

} 

package com.logicbig.example.math;

public class ExpmGraph {

    public static void main(String... args) {
        for (double i = 0; i <= 3; i = i + 0.5) {
            double exp = Math.expm1(i);
            boolean isInt = i == Math.floor(i);
            if (exp == 0) {
                System.out.println("0-* ");
                continue;

            } else {
                System.out.print(isInt ? ((int) i) + "-|" : "  |");
            }
            System.out.printf("%s* (%.1f)%n", " ".repeat((int) exp), exp);
        }
    }
}