Re-add list_to_polynomial

TODO: implement -

polimani.pl

@@ -432,6 +432,26 @@ polynomial_to_list(T, [T]) :-
 %@ % Execution Aborted
 %@ P = -2.3+x+x^2 .
 
+%% list_to_polynomial(+P:polynomial, -L:List)
+%
+%  Converts a list in a polynomial.
+%  TODO: not everything is a +, there are -
+%
+list_to_polynomial([T1|T2], P) :-
+    list_to_polynomial(T2, L1),
+    (
+        not(L1 = []),
+        P = L1+T1
+    ;
+        P = T1
+    ),
+    % The others computations are semantically meaningless
+    !.
+list_to_polynomial(T, P) :-
+    P = T.
+%% Tests:
+%% TODO
+
 %% negate_term(T, T2) is det
 %
 %  Negate the coeficient of a term and return the negated term