(* tests on PolyMinus

   author: Walther Neuper

   WN071207,

   (c) due to copyright terms

use"../smltest/IsacKnowledge/polyminus.sml";

use"polyminus.sml";

*)

val thy = EqSystem.thy;

"-----------------------------------------------------------------";

"table of contents -----------------------------------------------";

"-----------------------------------------------------------------";

"----------- watch order_add_mult  -------------------------------";

"----------- build predicate for +- ordering ---------------------";

"-----------------------------------------------------------------";

"-----------------------------------------------------------------";

"-----------------------------------------------------------------";

"----------- watch order_add_mult  -------------------------------";

"----------- watch order_add_mult  -------------------------------";

"----------- watch order_add_mult  -------------------------------";

"----- with these simple variables it works...";

trace_rewrite:=true;

val t = str2term "((a + d) + c) + b";

val Some (t,_) = rewrite_set_ thy false order_add_mult t; term2str t;

if term2str t = "a + (b + (c + d))" then ()

else raise error "polyminus.sml 1 watch order_add_mult";

trace_rewrite:=false;

"----- the same stepwise...";

val od = ord_make_polynomial true Poly.thy;

val t = str2term "((a + d) + c) + b";

"((a + d) + c) + b"; 

val Some (t,_) = rewrite_ thy od e_rls true real_add_commute t; term2str t;

"b + ((a + d) + c)";

val Some (t,_) = rewrite_ thy od e_rls true real_add_commute t; term2str t;

"b + (c + (a + d))";

val Some (t,_) = rewrite_ thy od e_rls true real_add_left_commute t;term2str t;

"b + (a + (c + d))";

val Some (t,_) = rewrite_ thy od e_rls true real_add_left_commute t;term2str t;

"a + (b + (c + d))";

if term2str t = "a + (b + (c + d))" then ()

else raise error "polyminus.sml 2 watch order_add_mult";

"----- if parentheses are right, left_commute is (almost) sufficient...";

val t = str2term "a + (d + (c + b))";

"a + (d + (c + b))";

val Some (t,_) = rewrite_ thy od e_rls true real_add_left_commute t;term2str t;

"a + (c + (d + b))";

val Some (t,_) = rewrite_ thy od e_rls true real_add_commute t;term2str t;

"a + (c + (b + d))";

val Some (t,_) = rewrite_ thy od e_rls true real_add_left_commute t;term2str t;

"a + (b + (c + d))";

"----- but we do not want the parentheses at right; thus: cond.rew.";

"WN0712707 complicated monomials do not yet work ...";

val t = str2term "((5*a + 4*d) + 3*c) + 2*b";

val Some (t,_) = rewrite_set_ thy false order_add_mult t; term2str t;

if term2str t = "2 * b + (3 * c + (4 * d + 5 * a))" then ()

else raise error "polyminus.sml: order_add_mult changed";

"----- here we see rew_sub going into subterm with ord.rew....";

val od = ord_make_polynomial false Poly.thy;

val t = str2term "b + a + c + d";

val Some (t,_) = rewrite_ thy od e_rls false real_add_commute t; term2str t;

val Some (t,_) = rewrite_ thy od e_rls false real_add_commute t; term2str t;

(*@@@ rew_sub gosub: t = d + (b + a + c)

  @@@ rew_sub begin: t = b + a + c*)

(*#####################################################################

"----------- build predicate for +- ordering ---------------------";

"----------- build predicate for +- ordering ---------------------";

"----------- build predicate for +- ordering ---------------------";

"a" < "b";

"ba" < "ab";

"123" < "a"; (*unused due to ---vvv*)

"12" < "3"; (*true !!!*)

" a kleiner b ==> (b + a) = (a + b)";

str2term "aaa";

str2term "222 * aaa";

case eval_kleiner 0 0 (str2term "12 kleiner 9") 0 of

    Some ("12 kleiner 9 = False", _) => ()

  | _ => raise error "polyminus.sml: 12 kleiner 9 = False";

case eval_kleiner 0 0 (str2term "a kleiner b") 0 of

    Some ("a kleiner b = True", _) => ()

  | _ => raise error "polyminus.sml: a kleiner b = True";

"----- test rewrite_, rewrite_set_";

val od = dummy_ord;

val erls = erls_ordne_alphabetisch;

val t = str2term "b + a";

"############################################";

val Some (t,_) = rewrite_ thy od erls false tausche_plus t; term2str t;

if term2str t = "a + b" then ()

else raise error "polyminus.sml: ordne_alphabetisch1 b + a";

trace_rewrite:=true;

val t = str2term "b + a";

val Some (t,_) = rewrite_set_ thy false ordne_alphabetisch t; term2str t;

if term2str t = "a + b" then ()

else raise error "polyminus.sml: ordne_alphabetisch a + b";

val t = str2term "2*b + a";

val Some (t,_) = rewrite_set_ thy false ordne_alphabetisch t; term2str t;

if term2str t = "a + 2 * b" then ()

else raise error "polyminus.sml: ordne_alphabetisch a + 2 * b";

val t = str2term "a + c + b";

val Some (t,_) = rewrite_set_ thy false ordne_alphabetisch t; term2str t;

if term2str t = "a + b + c" then ()

else raise error "polyminus.sml: ordne_alphabetisch a + b + c";

"----- rewrite goes into subterms";

val t = str2term "a + c + b + d";

val Some (t,_) = rewrite_ thy od erls false tausche_plus_plus t; term2str t;

if term2str t = "a + b + c + d" then ()

else raise error "polyminus.sml: ordne_alphabetisch1 a + b + c + d";

val t = str2term "a + c + d + b";

val Some (t,_) = rewrite_set_ thy false ordne_alphabetisch t; term2str t;

if term2str t = "a + b + c + d" then ()

else raise error "polyminus.sml: ordne_alphabetisch2 a + b + c + d";

"----- here we see rew_sub going into subterm with cond.rew....";

val t = str2term "b + a + c + d";

val Some (t,_) = rewrite_ thy od erls false tausche_plus t; term2str t;

if term2str t = "a + b + c + d" then ()

else raise error "polyminus.sml: ordne_alphabetisch3 a + b + c + d";

"----- compile rls for the most complicated terms";

val t = str2term "5*e + 6*f - 8*g - 9 - 7*e - 4*f + 10*g + 12";

"5 * e + 6 * f - 8 * g - 9 - 7 * e - 4 * f + 10 * g + 12";

val Some (t,_) = rewrite_set_ thy false ordne_alphabetisch t; term2str t;

"5 * e - 8 * g + 6 * f - 9 - 7 * e + 10 * g - 4 * f + 12";

trace_rewrite:=false;

(*

use"../smltest/IsacKnowledge/polyminus.sml";

use"polyminus.sml";

  *)

#####################################################################*)