All methods of java.lang.StrictMath class : Set 1, Set 2
The java.lang.StrictMath.exp() is an inbuilt method in Java is used to return a Euler number raised to the power of the specified double value. It gives rise to three special results:
- The result is positive infinity when the given argument is positive infinity.
- The result is positive zero when the argument is negative infinity.
- The result is NaN when the given argument is NaN.
Syntax :
public static double exp(double num)
Parameters: This method accepts one parameter num which is of double type which is the exponent to raise e to.
Return Value: The method returns the value e^num, where e is the base of the natural logarithms.
Examples:
Input: num = 7 Output: 1096.6331584284585 Input: num = (1.0 / 0.0) Output: Infinity
Below programs illustrate the java.lang.StrictMath.exp() method:
Program 1:
java
// Java program to illustrate the// java.lang.StrictMath.exp()import java.lang.*;public class Geeks { public static void main(String[] args) { double num1 = 0.0, num2 = (1.0 / 0.0); double num3 = 4; // Returns Euler's number e raised to the given power double expValue = StrictMath.exp(num1); System.out.println("The exp value of "+ num1+" = " + expValue); expValue = StrictMath.exp(num2); System.out.println("The exp value of "+ num2+" = " + expValue); expValue = StrictMath.exp(num3); System.out.println("The exp value of "+ num3+" = " + expValue); }} |
Output:
The exp value of 0.0 = 1.0 The exp value of Infinity = Infinity The exp value of 4.0 = 54.598150033144236
Program 2:
java
// Java program to illustrate the// java.lang.StrictMath.exp()import java.lang.*;public class Geeks { public static void main(String[] args) { double num1 = -0.0, num2 = (1.0 / 0.0); double num3 = 14; // Returns Euler's number e raised to the given power double expValue = StrictMath.exp(num1); System.out.println("The exp value of "+ num1+" = " + expValue); expValue = StrictMath.exp(num2); System.out.println("The exp value of "+ num2+" = " + expValue); expValue = StrictMath.exp(num3); System.out.println("The exp value of "+ num3+" = " + expValue); }} |
Output:
The exp value of -0.0 = 1.0 The exp value of Infinity = Infinity The exp value of 14.0 = 1202604.2841647768
