The CEIL(x) function takes a number and returns the first integer that is greater than or equal to the argument:
CEIL(5.5) === CEIL(5.1) === CEIL(6) === 6 CEIL(-5.5) === CEIL(-5.1) === CEIL(-5) === -5
The CEIL() function (v11.0+) takes a second optional parameter to indicate the number of decimal digits to operate to:
CEIL(5.6789,2) === 5.68 CEIL(-5.6789,2) === -5.67