NAME
	SPFloor -- compute Floor function of a number.

   SYNOPSIS
	x = SPFloor(y)
	D0 	    D0

	float SPFloor(float y);

   FUNCTION
	Calculate the largest integer less than or equal to x and return it.

   INPUTS
	y 	- Motorola Fast Floating Point number.

   RESULT
	x 	- Motorola Fast Floating Point number.

   BUGS
	None.

   SEE ALSO
	SPCeil()