There are different funtions for conversion from float to integer, which differ with respect to handling of the fractional part of the float.

INT(),FLOOR()	Next lower integer number
CEIL()	Next higher integer number
ROUND()	Nearest integer number

The floating point versions CEIL#, FLOOR# and ROUND# calculate the integer value but return it as floating point value. This is usefull, if the integer would exceed the integer range.