Mathematical function, suitable for both symbolic and numerical manipulation.
Ceiling[x] can be entered in StandardForm and InputForm as x, Esc lc EscEsc rc Esc or \[LeftCeiling]x\[RightCeiling].
Ceiling[x] returns an integer when is any numeric quantity, whether or not it is an explicit number.
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 applies separately to real and imaginary parts of complex numbers.
x
, Esc lc Esc 
Esc rc Esc or 
is any numeric quantity, whether or not it is an explicit number. 
EXAMPLES
Basic Examples 
Scope 