#      
## Overview
The **`floor()` function** in Swift returns the next largest integer that is less than or equal to a specified number.

Figure 1 shows the mathematical representation of the `floor()` function.

>**Note**: We need to import `Foundation` in our code to use the `floor()` function. We can import it like this:</br>`import Foundation`.

#    
#  Syntax
---
```Swift
floor(number)
```
---

# 
## Parameter

This function requires a number as a parameter.

##     
## Return value

The `floor()` function returns the next largest integer less than or equal to the number set as a parameter.

## Code example
The code written below demonstrates the use of the `floor()` function in Swift:

import Swift
//header for function
import Foundation

//integer
print ("The value of floor(4.0) : ",floor(4.0));

//positive double value
print ("The value of floor(2.56) : ",floor(2.56));

//negative double value
print ("The value of floor(-2.56) : ",floor(-2.56));

## Code explanation

**Line 3**: We add the header `Foundation` required for the `floor()` function. 

**Line 6**: We calculate the floor of the integer values using the `floor()` function.

**Line 9**: We calculate the floor of the positive double value using the `floor()` function.

**Line 12**: We calculate the floor of the negative double value using the `floor()` function.


What is the floor() function in Swift?

Returns the next largest integer <= a specified number in Swift. Requires importing Foundation.