`gf2ntop'
---------

gf2ntop(M[,V])
     :: Converts an element of GF(2^N) into a polynomial.

RETURN
     univariate polynomial

M
     an element of GF(2^N)

V
     indeterminate

   * Returns a polynomial representing M.

   * If V is used as the variable of the output.  If V is not
     specified, the variable of the argument of the latest `ptogf2n()'
     call. The default variable is `x'.

     [1] setmod_ff(x^30+x+1);
     x^30+x+1
     [2] N=simp_ff(gf2ntop(2^100));
     (@^13+@^12+@^11+@^10)
     [5] gf2ntop(N);
     [207] gf2ntop(N);
     x^13+x^12+x^11+x^10
     [208] gf2ntop(N,t);
     t^13+t^12+t^11+t^10

References
     *Note `ptogf2n': ptogf2n

