> For the complete documentation index, see [llms.txt](https://200ok.gitbook.io/200ok-documents/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://200ok.gitbook.io/200ok-documents/user-manual/built-in-functions/math/floor.md).
# floor
floor() function is the Standard function available in 200OK.
**Description** : The floor function rounds down a decimal to the nearest integer, returning the largest integer value that is less than or equal to the input value.
**Syntax** : fx\_floor()
**Example** : fx\_Floor(39.99) it returns the value as 39.
Here we go with simple scenario using the above function.
**Scenario** : In a retail store, the manager is pricing items based on their cost. They use the fx\_floor function to determine the final selling price by rounding down the calculated price to the nearest whole dollar, ensuring competitive pricing and maximizing sales.
**Request Side** :
Passing the value inside the function
Passing the value inside the function using index pattern
