`dp_subd'
---------

dp_subd(DPOLY1,DPOLY2)
     :: Returns the quotient monomial of the head terms.

RETURN
     distributed polynomial

DPOLY1  DPOLY2
     distributed polynomial

   * Gets `dp_ht(DPOLY1)/dp_ht(DPOLY2)'.  The coefficient of the result
     is always set to 1.

   * Divisibility assumed.

     [162] dp_subd(<<1,2,3,4,5>>,<<1,1,2,3,4>>);
     (1)*<<0,1,1,1,1>>

References
     *Note `dp_red dp_red_mod': dp_red dp_red_mod.

