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()