Java.lang.Double.doubleToLongBits() Method

Description

The java.lang.Double.doubleToLongBits() method returns a representation of the specified floating-point value according to the IEEE 754 floating-point "double format" bit layout.It includes the following important points:

• If the argument is positive infinity, the result is 0x7ff0000000000000L.
• If the argument is negative infinity, the result is 0xfff0000000000000L.
• If the argument is NaN, the result is 0x7ff8000000000000L.

Declaration

Following is the declaration for java.lang.Double.doubleToLongBits() method

public static long doubleToLongBits(double value)

Parameters

• value -- This is the double precision floating-point number.

Return Value

This method returns the bits that represent the floating-point number.

Exception

• NA

Example

The following example shows the usage of java.lang.Double.doubleToLongBits() method.

package com.tutorialspoint;

import java.lang.*;

public class DoubleDemo {

   public static void main(String[] args) {

     Double d = new Double("15.30");
   
     //returns the bits that represent the floating-point number
     System.out.println("Value = " + d.doubleToLongBits(5.5d));  
   }
} 

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

Value = 4617878467915022336