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