NAME
    IEEEDPCeil -- compute Ceil function of IEEE double precision number
SYNOPSIS
      x   = IEEEDPCeil(  y  );
    d0/d1              d0/d1
    double  x,y;
FUNCTION
    Calculate the least integer greater than or equal to x and return it.
    This value may have more than 32 bits of significance.
    This identity is true.  Ceil(x) = -Floor(-x).
INPUTS
    y -- IEEE double precision floating point value
RESULT
    x -- IEEE double precision floating point value
BUGS
SEE ALSO
    ieeedpfloor