NAME
        IEEEDPPow -- raise a number to another number power

   SYNOPSIS
          z   = IEEEDPPow(  x  ,  y  );
        d0/d1             d2/d3 d0/d1

        double  x,y,z;

   FUNCTION
        Compute y^x in IEEE double precision

   INPUTS
        x - IEEE double precision floating point value
        y - IEEE double precision floating point value

   RESULT
        z - IEEE double precision floating point value

   BUGS

   SEE ALSO