We use the **`scalbn()`** function to compute the product of a given number with **`FLT_RADIX`** raised to the given power.

`FLT_RADIX` is a constant which serves as the base of the exponent. Usually, in all computers, this value is 2.

# Library For C++
```c++
#include<cmath>
``` 

# Library For C
```c
#include<math.h>
``` 
> We have to use `#include<cfloat>` library for C++ and `#include<float.h>` library for C to access `FLT_RADIX` .
# Syntax
```c
double scalbn(double num, int n)
```

# Parameters

`num:` The input value can be of defined datatype. It is the coefficient or mantissa value.

`n:` Exponent value or the number to which `FLT_RADIX` is raised.

# Return value
It is the product of the given number, `num`, with `FLT_RADIX` raised to power `n.`

# Formula









#include <iostream>
#include<cmath>
#include <cfloat>
using namespace std;

int main()
{
  double num = 10.0;
  int n = 2;
  double result = 0;
  cout << num << " * " << FLT_RADIX << "^" << n << " = " << scalbn(num , n) << endl;

}

What is scalbn in C/C++?


Computes num * FLT_RADIX^n; use <cmath> for C++ and <math.h> for C; access FLT_RADIX via <cfloat> or <float.h>.

What is scalbn in C/C++?

Library For C++

Library For C

Syntax

Parameters

Return value

Formula

Code