NAME
        IEEESPCeil -- compute Ceil function of IEEE single precision number

   SYNOPSIS
          x   = IEEESPCeil(  y  );
         d0                  d0

        float   x,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 -- IEEE single precision floating point value

   RESULT
        x -- IEEE single precision floating point value

   BUGS

   SEE ALSO
        ieeespfloor()