"Smallest?"

The ceiling of a real number $x,$ denoted $\\lceil x \\rceil$ or sometimes $\\operatorname{ceil}(x),$ is the first integer $n \\ge x.$ For example, $\\lceil 3.72 \\rceil \= 4, \\lceil 4 \\rceil \= 4,$ and $\\lceil -3.72 \\rceil \= -3.$ In other words, the ceiling function rounds its input up to the nearest integer\.

Smallest?