method
ceil

ceil(*args)
public
Returns the smallest number greater than or equal to float in decimal digits (default 0 digits).
Precision may be negative. Returns a floating point number when ndigits is positive, self for zero, and ceil up for negative.
1.2.ceil #=> 2 2.0.ceil #=> 2 (-1.2).ceil #=> -1 (-2.0).ceil #=> -2 1.234567.ceil(2) #=> 1.24 1.234567.ceil(3) #=> 1.235 1.234567.ceil(4) #=> 1.2346 1.234567.ceil(5) #=> 1.23457 34567.89.ceil(-5) #=> 100000 34567.89.ceil(-4) #=> 40000 34567.89.ceil(-3) #=> 35000 34567.89.ceil(-2) #=> 34600 34567.89.ceil(-1) #=> 34570 34567.89.ceil(0) #=> 34568 34567.89.ceil(1) #=> 34567.9 34567.89.ceil(2) #=> 34567.89 34567.89.ceil(3) #=> 34567.89