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.
If x is
math.NAN, a NaN will be returned.
If x is integral, ±0, x itself is returned.
Otherwise, the rounded value of x is returned.
FLOAT math.ceil(FLOAT x)