Java math cbrt: Get cube root of a double value

Java Math class provides 'cbrt' method to compute the cube root of a double value.

 

Signature

public static double cbrt(double a)

 

Example

Math.cbrt(val1)

 

Points to note

a. Cube root of a negative value is the negative of the cube root of that value's magnitude, i.e, cbrt(-x) == -cbrt(x)

 

b. If the argument is NaN, then the result is NaN.

 

c. If the argument is infinite, then the result is an infinity with the same sign as the argument.

 

d. If the argument is zero, then the result is a zero with the same sign as the argument.

 

Find the below working application.

 

CubeRootDemo.java

package com.sample.app;

public class CubeRootDemo {

        public static void main(String[] args) {
                double val1 = 64;

                System.out.printf("Cube root of %f is %f\n\n", val1, Math.cbrt(val1));

                // cbrt(-x) == -cbrt(x)
                System.out.printf("cbrt(-%f) : %f\n", val1, Math.cbrt(-val1));
                System.out.printf("-cbrt(%f) : %f\n\n", val1, -Math.cbrt(val1));
                
                // If the argument is NaN, then the result is NaN.
                System.out.println("cbrt(NaN) : " + Math.cbrt(Double.NaN) +"\n");
                
                // If the argument is infinite, then the result is an infinity with the same sign as the argument
                System.out.println("cbrt(NEGATIVE_INFINITY) : " + Math.cbrt(Double.NEGATIVE_INFINITY) );
                System.out.println("cbrt(POSITIVE_INFINITY) : " + Math.cbrt(Double.POSITIVE_INFINITY) +"\n\n");
                
                // If the argument is zero, then the result is a zero with the same sign as the argument.
                System.out.println("cbrt(0.0) : " + Math.cbrt(0.0));
                System.out.println("cbrt(-0.0) : " + Math.cbrt(-0.0));
        }

}

Output

Cube root of 64.000000 is 4.000000

cbrt(-64.000000) : -4.000000
-cbrt(64.000000) : -4.000000

cbrt(NaN) : NaN

cbrt(NEGATIVE_INFINITY) : -Infinity
cbrt(POSITIVE_INFINITY) : Infinity


cbrt(0.0) : 0.0
cbrt(-0.0) : -0.0

 

  

Previous                                                 Next                                                 Home