API ceil
From WoWWiki
"ceil" is a shortcut for the standard Lua library function "math.ceil". They can both be used interchangeably.
ceil(value) returns the ceiling of the value (the next highest whole number) i.e. rounds value up
> print(ceil(3.141592653)) 4
round > print(ceil(n - .5))
This is a Lua function and documented as part of the World of Warcraft API
