(ffloor x y)

ffloor returns the floor relative to multiples of a float (complements fmodulo): ffloor+fmodulo = x.

Parameter	Description
x	Dividend value
y	Divisor value

Example

Example 1: Demonstration of fmodulo, fceiling and ffloor

> (fmodulo 33 2.5)
.4999999999999982
> (fceiling 33 2.5)
35.
> (ffloor 33 2.5)
32.5