#    
## Overview
In C++, the **`frexp()` function** is used to return the multiple of the binary significand and `2` raised to the power of the exponent. In simpler words, the `frexp()` function returns the binary significand value of a floating point number.

Mathematically:

frexp(x, exp) => x = binary significand * $2^{exponent}$

>Note: A floating point number whose absolute value lies between `0.5` and `1` is referred to as the **binary significand**.  

## Syntax
```
double frexp (double x, int* exp);
float frexp (float x, int* exp);
long double frexp (long double x, int* exp);
```
## Parameter 
The `frexp()` function takes two parameter values:
* **`x`**: This represents the value that needs to be decomposed. 
* **`exp`**: This represents the pointer to an integer where the exponent's value is stored.
## Return value
The `frexp()` function returns the binary signinificand value of type `double`, `float`, or `long double`. These absolute values lie between `0.5` and `1`. If the given `x` parameter is `0`, then both the significand and the exponent values are `0`.
## Code example


#include <iostream>
#include <cmath>

using namespace std;

int main ()
{
  // creatimg our variables
	double x = 7.24, significand;
	int *exp;

  // using the frexp() function 
	significand = frexp(x , exp);
	cout << x << " = " << significand << " * 2^" << *exp << endl;

	return 0;
}

## Code explanation
* **Lines 9–10**: We create our variables `x`, `significand`, and `*exp`.
* **Line 13**: We implement the `frexp()` function, using `x` and `exp` as the parameter values of the function. We assign the output of the result to the variable `signifciand`.

* **Line 14**: We print the variable `x` alongside the variables `significand` and `exp`.

What is the frexp() function in C++?

Extracts the binary significand and exponent of a floating-point number, ensuring values lie between 0.5 and 1.