Answer:
Integer
Explanation:
The greatest integer function (as known as the floor function), is defined as to be the greatest integer less than or equal to x.
It is the function:
![f(x)=\floor[x]](https://img.qammunity.org/2021/formulas/mathematics/high-school/6cwmcr4o6uoywhifzi8thmpofpi5ulgtx7.png)
For instance, if x is 2, then f(x) is 2. If x is 2.7, then f(x) is still 2. 2 is the greatest integer less than or equal to 2.
You can also see this from the attached graph.