math.ceil
Available inall subroutines.
Computes the smallest integer value greater than or equal to the given value.
In other words, round x towards positive infinity.
For example, 2.2, 2.5, and 2.7 all ceil to 3.0.
Return Value
If x is math.NAN, a NaN will be returned.
If x is integral, ±0, x itself is returned.
If x is math.POS_INFINITY or
math.NEG_INFINITY, an infinity
of the same sign is returned.
Otherwise, the rounded value of x is returned.