The floor of a non-negative number a: the greatest integer that is smaller than or equal to a. For example,⎣5⎦ = 5, and⎣5.9⎦ = 5.
The floor of a non-negative number a: the greatest integer that is smaller than or equal to a. For example,⎣5⎦ = 5, and⎣5.9⎦ = 5.