**`scalblnf`** in C is used to multiply a floating-point value by `FLT_RADIX` raised to a user-specified value. `scalblnf` is defined in the `math.h` header file and the function declaration is as follows:
```C
float scalblnf(float arg, long exp);
```
>  `FLT_RADIX` is an integer constant defined in `<float.h>`. Its value is `2` for most binary systems.


# Parameters
`arg`: floating-point value

`exp`: long value

# Return value
* No errors: $arg*FLT\_RADIX^{exp}$

* Range error due to underflow: Correct result after rounding

* Range error due to overflow: ±HUGE_VAL, ±HUGE_VALF, or ±HUGE_VALL

# Error handling
Errors are recorded according to the macro constant [math_errhandling](https://en.cppreference.com/w/c/numeric/math/math_errhandling). Some special cases are handled as follows:
* If `arg` is $±0$, then unmodified `arg` is returned
* If `arg` is ±$\infty$, then unmodified `arg` is returned
* If `exp` is $0$, then unmodified `arg` is returned
* If `arg` is NaN, then NaN is returned
# Example




#include <stdio.h>
#include <math.h>
#include <errno.h>

int main()
{
    printf("scalblnf(3.0, 2) = %f\n", scalblnf(3.0, 2));
    printf("scalblnf(5.0, -3) = %f\n", scalblnf(5.0,-3));
    printf("scalblnf(7.0, 0) = %f\n", scalblnf(7.0, 0));

    return 0;
}

# Explanation
First, we import the `math.h` header file from the C standard library. The program then prints the output of `scalblnf` on possible example values.
>`scalbn`, `scalbnf`, `scalbnl`, `scalbln`, and `scalblnl` perform the same function as `scalblnf` but differ in the data types of `exp` and return value.

What is scalblnf in C?

Used in C, multiplies a float by FLT_RADIX raised to specified value, defined in math.h header.