The **`lrintl()`** function casts the given `long double` argument to an integral number, a `long int`, based on the chosen mode of rounding. 

>`lrintl()` is a variation of the `lrint()` function. 

# Library
```c
#include<math.h>
```

# Declaration
The following are the declarations of `lrintl()`:
```c
long int lrintl(long double x);
```

# Modes of rounding
We can specify the mode of rounding before calling `lrintl()`.  The four modes of rounding are as follows:
## 1. FE_TONEAREST
In this mode, the `long double` value is `rounded` to the nearest integer.

## 2. FE_DOWNWARD
In this mode, `lrintl()` returns the `floor` of the `long double` value.

## 3. FE_UPWARD
In this mode, `lrintl()` returns the `ceil` of the `long double` value.

## 4. FE_TOWARDZERO
In this mode, `lrintl()` returns the integer that is `closer to zero`.


> Note: The default mode of rounding is **FE_TONEAREST**.

# Code

#include <stdio.h>
#include <fenv.h>   //header file for fesetround()
#include <math.h>

int main()
{
    long double x = 0.4;
    printf("%ld", lrintl(x));    //rounding off the number
    fesetround(FE_DOWNWARD);
    x = -1.2;
    printf("\n%ld", lrintl(x));    //calculating floor of number
    fesetround(FE_UPWARD);
    x = -2.8;  
    printf("\n%ld", lrintl(x));    //calculating ceil of number
    fesetround(FE_TOWARDZERO);
    x = 1.9;
    printf("\n%ld", lrintl(x));    //return number closer to zero
    return 0;
}

What is lrintl() in C?

The lrintl() function casts the given long double argument to an integral number, a long int, based on the chosen mode of rounding.  lrintl() is a variation of the lrint() function.  Library #include  Declaration The following are the declarations of lrintl(): long int lrintl(long double x);  Modes of rounding We can specify the mode of rounding before calling lrintl().  The four modes of rounding are as follows: 1. FE_TONEAREST In this mode, the long double value is rounded to the nearest integer. 