piso de matemática da Lua
> = math.floor(0.5)
0
> = math.ceil(0.5)
1
> = math.floor(-0.5)
-1
> = math.ceil(-0.5)
-0
marnixah
> = math.floor(0.5)
0
> = math.ceil(0.5)
1
> = math.floor(-0.5)
-1
> = math.ceil(-0.5)
-0