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

Last Updated : 04 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:

import java.math.BigInteger;

public class GFG {

`` public static void main(String[] args)

`` {

`` BigInteger b1, b2;

`` b1 = new BigInteger( "32145" );

`` b2 = new BigInteger( "7613721" );

`` float floatValueOfb1 = b1.floatValue();

`` float floatValueOfb2 = b2.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.

import java.math.BigInteger;

public class GFG {

`` public static void main(String[] args)

`` {

`` BigInteger b1, b2;

`` b1 = new BigInteger( "32145535361361525377" );

`` b2 = new BigInteger( "7613721535372632367351" );

`` float floatValueOfb1 = b1.floatValue();

`` float floatValueOfb2 = b2.floatValue();

`` System.out.println( "floatValue of "

`` + b1 + " : " + floatValueOfb1);

`` System.out.println( "floatValue of "

`` + b2 + " : " + floatValueOfb2);

`` }

}

Output:

floatValue of 32145535361361525377 : 3.2145535E19 floatValue of 7613721535372632367351 : 7.6137214E21

Reference: https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html#floatValue()