Floor[
x
] can be entered in StandardForm and InputForm as x, lf
x rf or \[LeftFloor]
x \[RightFloor].
Floor[
x
] returns an integer when x is any numeric quantity, whether or not it is an explicit number.
Example: Floor[Pi^2].
For exact numeric quantities, Floor internally uses numerical approximations to establish its result. This process can be affected by the setting of the global variable $MaxExtraPrecision.
; Floor[2.6]
x
, 
lf
