Syntax	floor ( r : real ) : int
Description	Returns the largest integer that is less than or equal to r.
Details	The floor function is used to convert a real number to an integer. The result is the largest integer that is less than or equal to r. In other words, the floor function rounds down to the nearest integer. For example, floor (3) is 3, floor (2.75) is 2 and floor (-8.43) is -9.
See also	ceil and round functions.