# Java Math getExponent() Function ## Java Math Class

Java Math class provides several methods to perform several operations on math calculations like max(), min(), sin(), cos(), round(), ceil(), floor(), abs(), getExponent Function etc.
The java.lang.Math class contains various methods for performing basic numeric operations

Here, in the page we will discuss about the getExponent Function of Math class in java.

## Java getExponent Function :

Java Collection contains Math class and The class Math contains methods for performing basic and advance numeric operations such as the exponential, logarithm, square root, and trigonometric functions.
The getExponent Function of math class in Java returns the unbiased exponent of the floating point or double representation of given input. It is a static function so we can access it by using the Math class.

#### Syntax:

`Math.getExponent(number);`

#### Return Type :

• If the input is Zero, getExponent method will return Double.MIN_EXPONENT -1.
• If the input is NaN or Infinity, getExponent will return Double.MAX_EXPONENT + 1.

#### Example :

Run
```import java.util.*;

public class Main{
public static void main(String[] args){
// Initializing double argumnet
double num = 2.0d;

// Initializing float argumnet
float num1 = 40.1f;

System.out.println("Exponential value for the given double Input is : "
+ Math.getExponent(num));

System.out.println("Exponential value for the given float Input is : "
+ Math.getExponent(num1));
}
}```
```Output:

Exponential value for the given double Input is : 1
Exponential value for the given float Input is : 5
```

In the above Example, We had taken two variables of double and float type respectively. The getExponent() Function returns the unbiased exponent of the floating point or double representation of given input respectively.

#### Example For NaN and Infinity Value:

Run
```import java.util.*;

public class Main{
public static void main(String[] args){
// Initializing NaN as argumnet
double num = Double.NaN;

System.out.println("Exponential value for the NaN Input is : "
+ Math.getExponent(num));

// Initializing argument as negative infinity
double num2 = Double.POSITIVE_INFINITY;

System.out.println("Exponential value for negative infinity is : "
+ Math.getExponent(num2));

// Initializing 0 argument
double num3 = 0;

System.out.println("Exponential value for 0 is : " + Math.getExponent(num3));
}
}```
```Output:

Exponential value for the NaN Input is : 1024
Exponential value for positive infinity is : 1024
Exponential value for 0 is : -1023
```

In the above Example, We had taken a NaN variable, a 0 variable and infinity as arguments. The getExponent() Function returns the unbiased exponent of the floating point or double representation of given inputs respectively.

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