NAME
        SPCeil -- Compute Ceil function of a number.
   SYNOPSIS
        x = SPCeil(y)
        D0         D0
        float SPCeil(float y);
   FUNCTION
        Calculate the least integer greater than or equal to x and return it.
        This identity is true.  Ceil(x) = -Floor(-x).
   INPUTS
        y       - Motorola Fast Floating Point format number.
   RESULT
        x       - Motorola Fast Floating Point format number.
   BUGS
        None.
   SEE ALSO
        spfloor()