Java.lang.Math.getExponent() Method

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Description

The java.lang.Math.getExponent(double d) returns the unbiased exponent used in the representation of a double. Special cases −

• If the argument is NaN or infinite, then the result is Double.MAX_EXPONENT + 1.

• If the argument is zero or subnormal, then the result is Double.MIN_EXPONENT -1.

Declaration

Following is the declaration for java.lang.Math.getExponent() method

public static int getExponent(double d)

Parameters

d − a double value

Return Value

This method returns the unbiased exponent of the argument

Exception

NA

Example

The following example shows the usage of lang.Math.getExponent() method.

package com.tutorialspoint;

import java.lang.*;

public class MathDemo {

   public static void main(String[] args) {

      // get two double numbers
      double x = 60984.1;
      double y = -497.99;
   
      // print the unbiased exponent of them
      System.out.println("Math.getExponent(" + x + ")=" + Math.getExponent(x));
      System.out.println("Math.getExponent(" + y + ")=" + Math.getExponent(y));
      System.out.println("Math.getExponent(0)=" + Math.getExponent(0));
   }
}

Let us compile and run the above program, this will produce the following result −

Math.getExponent(60984.1)=15
Math.getExponent(-497.99)=8
Math.getExponent(0)=-127