BigInteger floatValue() Method in Java (original) (raw)

Last Updated : 4 Dec, 2018

The java.math.BigInteger.floatValue() converts this BigInteger to a float value. If the value returned by this function is too big for a magnitude to represent as a float then it will be converted to Float.NEGATIVE_INFINITY or Float.POSITIVE_INFINITY as appropriate. There is a chance that this conversion can lose information about the precision of the BigInteger value.Syntax:

public float floatValue()

Returns: The method returns a float value which represents float value for this BigInteger.Examples:

Input: BigInteger1=32145 Output: 32145.0 Explanation: BigInteger1.floatValue()=32145.0.

Input: BigInteger1=32145535361361525377 Output: 3.2145535E19 Explanation: BigInteger1.floatValue()=3.2145535E19. This BigInteger is too big for a magnitude to represent as a float then it will be converted to Float.NEGATIVE_INFINITY or Float.POSITIVE_INFINITY as appropriate.

Below programs illustrate floatValue() method of BigInteger class:Example 1:

Java `

// Java program to demonstrate floatValue() method of BigInteger

import java.math.BigInteger;

public class GFG {

public static void main(String[] args)
{

    // Creating 2 BigInteger objects
    BigInteger b1, b2;

    b1 = new BigInteger("32145");
    b2 = new BigInteger("7613721");

    // apply floatValue() method
    float floatValueOfb1 = b1.floatValue();
    float floatValueOfb2 = b2.floatValue();

    // print floatValue
    System.out.println("floatValue of "
                       + b1 + " : " + floatValueOfb1);
    System.out.println("floatValue of "
                       + b2 + " : " + floatValueOfb2);
}

}

`

Output:

floatValue of 32145 : 32145.0 floatValue of 7613721 : 7613721.0

Example 2: When return float is too big for a magnitude to represent as a float.

Java `

// Java program to demonstrate floatValue() method of BigInteger

import java.math.BigInteger;

public class GFG {

public static void main(String[] args)
{
    // Creating 2 BigInteger objects
    BigInteger b1, b2;

    b1 = new BigInteger("32145535361361525377");
    b2 = new BigInteger("7613721535372632367351");

    // apply floatValue() method
    float floatValueOfb1 = b1.floatValue();
    float floatValueOfb2 = b2.floatValue();

    // print floatValue
    System.out.println("floatValue of "
                       + b1 + " : " + floatValueOfb1);
    System.out.println("floatValue of "
                       + b2 + " : " + floatValueOfb2);
}

}

`