With the function floor you can also round numbers to an integer like the function round. The difference between these two functions is that floor rounds the number down independently how high or low the first decimal place is.

For example:

floor(4.7) = 4

floor(13.5) = 13

floor(8.3) = 8

floor(14.0) = 14

Looking for ideas where to use this function? Have a look here or here.