The **`nexttoward()`** function produces the smallest possible value after a number in a given direction. The declaration of `nexttoward()` is shown below:
```C
double nexttoward (double num, long double dir);
```
Or:
```C
long double nexttowardl (long double num, long double dir);
```
Or:
```C
float nexttowardf (float num, long double dir);
```
# Parameters
* `num`: The number of which the next representable floating point is required
* `dir`: The direction of the floating point with respect to `num`
# Return value
The `nexttoward()` function returns the next representable floating-point number after `num` in the direction of `dir`.

# Library
To use the `nexttoward()` function, include the following library:
```C
#include <math.h>
```

# Example
Consider the code snippet below, which demonstrates the implementation of `nexttoward()`:

 


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

int main() {

  double a = 0.0;
  long double b = 2.0;
  long double c = -2.0;

  double x = nexttoward(a, b);
  double y = nexttoward(a, c);

  printf("nexttoward ( %f, %Lf ) = ( %e) \n", a, b, x);
  printf("nexttoward ( %f, %Lf ) = ( %e) \n", a, c, y);
  
  return 0;
}

gcc compiler

# Explanation
The `nexttoward()` function is used in lines 10 and 11 to compute the next representable floating-point number after `a` in the direction of `b` and `c`.

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What is nexttoward() in C?

Produces the smallest possible value after a number in a specified direction; include `<math.h>`.