neuper@37906: (* WN.020812: theorems in the Reals,
neuper@37906:    necessary for special rule sets, in addition to Isabelle2002.
neuper@37906:    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
neuper@37906:    !!! THIS IS THE _least_ NUMBER OF ADDITIONAL THEOREMS !!!
neuper@37906:    !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
walther@60242:    xxxI contain \<up> instead of ^ in the respective theorem xxx in 2002
neuper@37906:    changed by: Richard Lang 020912
neuper@37906: *)
neuper@37906: 
neuper@37950: theory Poly imports Simplify begin
neuper@37906: 
wneuper@59523: subsection \<open>remark on term-structure of polynomials\<close>
wneuper@59523: text \<open>
wneuper@59523: WN190319:
wneuper@59523: the code below reflects missing coordination between two authors:
wneuper@59523: * ML: built the equation solver; simple rule-sets, programs; better predicates for specifications.
wneuper@59523: * MG: built simplification of polynomials with AC rewriting by ML code
wneuper@59523: 
wneuper@59523: WN020919:
wneuper@59523: *** there are 5 kinds of expanded normalforms ***
wneuper@59523: 
wneuper@59523: [1] 'complete polynomial' (Komplettes Polynom), univariate
wneuper@59523:    a_0 + a_1.x^1 +...+ a_n.x^n   not (a_n = 0)
wneuper@59523: 	        not (a_n = 0), some a_i may be zero (DON'T disappear),
wneuper@59523:                 variables in monomials lexicographically ordered and complete,
wneuper@59523:                 x written as 1*x^1, ...
wneuper@59523: [2] 'polynomial' (Polynom), univariate and multivariate
wneuper@59523:    a_0 + a_1.x +...+ a_n.x^n   not (a_n = 0)
wneuper@59523:    a_0 + a_1.x_1.x_2^n_12...x_m^n_1m +...+  a_n.x_1^n.x_2^n_n2...x_m^n_nm
wneuper@59523: 	        not (a_n = 0), some a_i may be zero (ie. monomials disappear),
wneuper@59523:                 exponents and coefficients equal 1 are not (WN060904.TODO in cancel_p_)shown,
wneuper@59523:                 and variables in monomials are lexicographically ordered  
walther@60242:    examples: [1]: "1 + (-10) * x \<up> 1 + 25 * x \<up> 2"
walther@60242: 	     [1]: "11 + 0 * x \<up> 1 + 1 * x \<up> 2"
walther@60242: 	     [2]: "x + (-50) * x \<up> 3"
walther@60242: 	     [2]: "(-1) * x * y \<up> 2 + 7 * x \<up> 3"
wneuper@59523: 
wneuper@59523: [3] 'expanded_term' (Ausmultiplizierter Term):
wneuper@59523:    pull out unary minus to binary minus, 
wneuper@59523:    as frequently exercised in schools; other conditions for [2] hold however
walther@60242:    examples: "a \<up> 2 - 2 * a * b + b \<up> 2"
walther@60242: 	     "4 * x \<up> 2 - 9 * y \<up> 2"
wneuper@59523: [4] 'polynomial_in' (Polynom in): 
wneuper@59523:    polynomial in 1 variable with arbitrary coefficients
walther@60242:    examples: "2 * x + (-50) * x \<up> 3"                     (poly in x)
walther@60242: 	     "(u + v) + (2 * u \<up> 2) * a + (-u) * a \<up> 2 (poly in a)
wneuper@59523: [5] 'expanded_in' (Ausmultiplizierter Termin in): 
wneuper@59523:    analoguous to [3] with binary minus like [3]
walther@60242:    examples: "2 * x - 50 * x \<up> 3"                     (expanded in x)
walther@60242: 	     "(u + v) + (2 * u \<up> 2) * a - u * a \<up> 2 (expanded in a)
wneuper@59523: \<close>
wneuper@59523: subsection \<open>consts definition for predicates in specifications\<close>
neuper@37906: consts
neuper@37906: 
walther@60278:   is_expanded_in :: "[real, real] => bool" ("_ is'_expanded'_in _") 
walther@60278:   is_poly_in     :: "[real, real] => bool" ("_ is'_poly'_in _")   (*RL DA *)
walther@60278:   has_degree_in  :: "[real, real] => real" ("_ has'_degree'_in _")(*RL DA *)
walther@60278:   is_polyrat_in  :: "[real, real] => bool" ("_ is'_polyrat'_in _")(*RL030626*)
neuper@37906: 
walther@60278:   is_multUnordered:: "real => bool" ("_ is'_multUnordered") 
walther@60278:   is_addUnordered :: "real => bool" ("_ is'_addUnordered") (*WN030618*)
walther@60278:   is_polyexp      :: "real => bool" ("_ is'_polyexp") 
neuper@37906: 
wneuper@59523: subsection \<open>theorems not yet adopted from Isabelle\<close>
neuper@52148: axiomatization where (*.not contained in Isabelle2002,
neuper@37906:          stated as axioms, TODO: prove as theorems;
walther@60242:          theorem-IDs 'xxxI' with \<up> instead of ^ in 'xxx' in Isabelle2002.*)
neuper@37906: 
walther@60242:   realpow_pow:             "(a \<up> b) \<up> c = a \<up> (b * c)" and
walther@60242:   realpow_addI:            "r \<up> (n + m) = r \<up> n * r \<up> m" and
walther@60242:   realpow_addI_assoc_l:    "r \<up> n * (r \<up> m * s) = r \<up> (n + m) * s" and
walther@60242:   realpow_addI_assoc_r:    "s * r \<up> n * r \<up> m = s * r \<up> (n + m)" and
neuper@37906: 		  
walther@60242:   realpow_oneI:            "r \<up> 1 = r" and
walther@60242:   realpow_zeroI:            "r \<up> 0 = 1" and
walther@60242:   realpow_eq_oneI:         "1 \<up> n = 1" and
walther@60242:   realpow_multI:           "(r * s) \<up> n = r \<up> n * s \<up> n"  and
neuper@37974:   realpow_multI_poly:      "[| r is_polyexp; s is_polyexp |] ==>
walther@60242: 			      (r * s) \<up> n = r \<up> n * s \<up> n"  and
walther@60242:   realpow_minus_oneI:      "(- 1) \<up> (2 * n) = 1"  and 
wneuper@59589:   real_diff_0:		         "0 - x = - (x::real)" and
neuper@37906: 
walther@60242:   realpow_twoI:            "r \<up> 2 = r * r" and
walther@60242:   realpow_twoI_assoc_l:	  "r * (r * s) = r \<up> 2 * s" and
walther@60242:   realpow_twoI_assoc_r:	  "s * r * r = s * r \<up> 2" and
walther@60242:   realpow_two_atom:        "r is_atom ==> r * r = r \<up> 2" and
walther@60242:   realpow_plus_1:          "r * r \<up> n = r \<up> (n + 1)"   and       
walther@60242:   realpow_plus_1_assoc_l:  "r * (r \<up> m * s) = r \<up> (1 + m) * s"  and
walther@60242:   realpow_plus_1_assoc_l2: "r \<up> m * (r * s) = r \<up> (1 + m) * s"  and
walther@60242:   realpow_plus_1_assoc_r:  "s * r * r \<up> m = s * r \<up> (1 + m)" and
walther@60242:   realpow_plus_1_atom:     "r is_atom ==> r * r \<up> n = r \<up> (1 + n)" and
neuper@37974:   realpow_def_atom:        "[| Not (r is_atom); 1 < n |]
walther@60242: 			   ==> r \<up> n = r * r \<up> (n + -1)" and
walther@60242:   realpow_addI_atom:       "r is_atom ==> r \<up> n * r \<up> m = r \<up> (n + m)" and
neuper@37906: 
neuper@37906: 
walther@60278:   realpow_minus_even:	     "n is_even ==> (- r) \<up> n = r \<up> n" and
walther@60242:   realpow_minus_odd:       "Not (n is_even) ==> (- r) \<up> n = -1 * r \<up> n" and
neuper@37906: 
neuper@37906: 
neuper@37906: (* RL 020914 *)
neuper@52148:   real_pp_binom_times:     "(a + b)*(c + d) = a*c + a*d + b*c + b*d" and
neuper@52148:   real_pm_binom_times:     "(a + b)*(c - d) = a*c - a*d + b*c - b*d" and
neuper@52148:   real_mp_binom_times:     "(a - b)*(c + d) = a*c + a*d - b*c - b*d" and
neuper@52148:   real_mm_binom_times:     "(a - b)*(c - d) = a*c - a*d - b*c + b*d" and
walther@60242:   real_plus_binom_pow3:    "(a + b) \<up> 3 = a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3" and
neuper@37974:   real_plus_binom_pow3_poly: "[| a is_polyexp; b is_polyexp |] ==> 
walther@60242: 			    (a + b) \<up> 3 = a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3" and
walther@60242:   real_minus_binom_pow3:   "(a - b) \<up> 3 = a \<up> 3 - 3*a \<up> 2*b + 3*a*b \<up> 2 - b \<up> 3" and
walther@60242:   real_minus_binom_pow3_p: "(a + -1 * b) \<up> 3 = a \<up> 3 + -3*a \<up> 2*b + 3*a*b \<up> 2 +
walther@60242:                            -1*b \<up> 3" and
walther@60385: (* real_plus_binom_pow:        "[| n is_num;  3 < n |] ==>
walther@60260: 			       (a + b) \<up> n = (a + b) * (a + b)\<up>(n - 1)" *)
walther@60242:   real_plus_binom_pow4:   "(a + b) \<up> 4 = (a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3)
neuper@52148:                            *(a + b)" and
neuper@37974:   real_plus_binom_pow4_poly: "[| a is_polyexp; b is_polyexp |] ==> 
walther@60242: 			   (a + b) \<up> 4 = (a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3)
neuper@52148:                            *(a + b)" and
walther@60242:   real_plus_binom_pow5:    "(a + b) \<up> 5 = (a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3)
walther@60242:                            *(a \<up> 2 + 2*a*b + b \<up> 2)" and
neuper@37974:   real_plus_binom_pow5_poly: "[| a is_polyexp; b is_polyexp |] ==> 
walther@60242: 			        (a + b) \<up> 5 = (a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 
walther@60242:                                 + b \<up> 3)*(a \<up> 2 + 2*a*b + b \<up> 2)" and
neuper@52148:   real_diff_plus:          "a - b = a + -b" (*17.3.03: do_NOT_use*) and
neuper@52148:   real_diff_minus:         "a - b = a + -1 * b" and
walther@60242:   real_plus_binom_times:   "(a + b)*(a + b) = a \<up> 2 + 2*a*b + b \<up> 2" and
walther@60242:   real_minus_binom_times:  "(a - b)*(a - b) = a \<up> 2 - 2*a*b + b \<up> 2" and
neuper@37906:   (*WN071229 changed for Schaerding -----vvv*)
walther@60260:   (*real_plus_binom_pow2:  "(a + b) \<up> 2 = a \<up> 2 + 2*a*b + b \<up> 2"*)
walther@60242:   real_plus_binom_pow2:    "(a + b) \<up> 2 = (a + b) * (a + b)" and
walther@60242:   (*WN071229 changed for Schaerding -----\<up>*)
neuper@37974:   real_plus_binom_pow2_poly: "[| a is_polyexp; b is_polyexp |] ==>
walther@60242: 			       (a + b) \<up> 2 = a \<up> 2 + 2*a*b + b \<up> 2" and
walther@60242:   real_minus_binom_pow2:      "(a - b) \<up> 2 = a \<up> 2 - 2*a*b + b \<up> 2" and
walther@60242:   real_minus_binom_pow2_p:    "(a - b) \<up> 2 = a \<up> 2 + -2*a*b + b \<up> 2" and
walther@60242:   real_plus_minus_binom1:     "(a + b)*(a - b) = a \<up> 2 - b \<up> 2" and
walther@60242:   real_plus_minus_binom1_p:   "(a + b)*(a - b) = a \<up> 2 + -1*b \<up> 2" and
walther@60242:   real_plus_minus_binom1_p_p: "(a + b)*(a + -1 * b) = a \<up> 2 + -1*b \<up> 2" and
walther@60242:   real_plus_minus_binom2:     "(a - b)*(a + b) = a \<up> 2 - b \<up> 2" and
walther@60242:   real_plus_minus_binom2_p:   "(a - b)*(a + b) = a \<up> 2 + -1*b \<up> 2" and
walther@60242:   real_plus_minus_binom2_p_p: "(a + -1 * b)*(a + b) = a \<up> 2 + -1*b \<up> 2" and
walther@60242:   real_plus_binom_times1:     "(a +  1*b)*(a + -1*b) = a \<up> 2 + -1*b \<up> 2" and
walther@60242:   real_plus_binom_times2:     "(a + -1*b)*(a +  1*b) = a \<up> 2 + -1*b \<up> 2" and
neuper@37906: 
walther@60385:   real_num_collect:           "[| l is_num; m is_num |] ==>
neuper@52148: 			      l * n + m * n = (l + m) * n" and
neuper@37906: (* FIXME.MG.0401: replace 'real_num_collect_assoc' 
neuper@37906: 	by 'real_num_collect_assoc_l' ... are equal, introduced by MG ! *)
walther@60385:   real_num_collect_assoc:     "[| l is_num; m is_num |] ==> 
neuper@52148: 			      l * n + (m * n + k) = (l + m) * n + k" and
walther@60385:   real_num_collect_assoc_l:   "[| l is_num; m is_num |] ==>
neuper@37950: 			      l * n + (m * n + k) = (l + m)
neuper@52148: 				* n + k" and
walther@60385:   real_num_collect_assoc_r:   "[| l is_num; m is_num |] ==>
neuper@52148: 			      (k + m * n) + l * n = k + (l + m) * n" and
walther@60385:   real_one_collect:           "m is_num ==> n + m * n = (1 + m) * n" and
neuper@37906: (* FIXME.MG.0401: replace 'real_one_collect_assoc' 
neuper@37906: 	by 'real_one_collect_assoc_l' ... are equal, introduced by MG ! *)
walther@60385:   real_one_collect_assoc:     "m is_num ==> n + (m * n + k) = (1 + m)* n + k" and
neuper@37906: 
walther@60385:   real_one_collect_assoc_l:   "m is_num ==> n + (m * n + k) = (1 + m) * n + k" and
walther@60385:   real_one_collect_assoc_r:  "m is_num ==> (k + n) +  m * n = k + (1 + m) * n" and
neuper@37906: 
neuper@37906: (* FIXME.MG.0401: replace 'real_mult_2_assoc' 
neuper@37906: 	by 'real_mult_2_assoc_l' ... are equal, introduced by MG ! *)
neuper@52148:   real_mult_2_assoc:          "z1 + (z1 + k) = 2 * z1 + k" and
neuper@52148:   real_mult_2_assoc_l:        "z1 + (z1 + k) = 2 * z1 + k" and
neuper@52148:   real_mult_2_assoc_r:        "(k + z1) + z1 = k + 2 * z1" and
neuper@37906: 
wneuper@59587:   real_mult_left_commute: "z1 * (z2 * z3) = z2 * (z1 * z3)" and
wneuper@59587:   real_mult_minus1:       "-1 * z = - (z::real)" and
walther@60333:   (*sym_real_mult_minus1 expands indefinitely without assumptions ...*)
walther@60343:   real_mult_minus1_sym:   "[| \<not>(matches (- 1 * x) z); \<not>(z is_num) |] ==> - (z::real) = -1 * z" and
walther@60344:   real_minus_mult_left:   "\<not> ((a::real) is_num) ==> (- a) * b = - (a * b)" and
wneuper@59587:   real_mult_2:            "2 * z = z + (z::real)" and
walther@60343:                                                                                                             
neuper@52148:   real_add_mult_distrib_poly: "w is_polyexp ==> (z1 + z2) * w = z1 * w + z2 * w" and
neuper@37974:   real_add_mult_distrib2_poly:"w is_polyexp ==> w * (z1 + z2) = w * z1 + w * z2"
neuper@37950: 
walther@60278: 
wneuper@59523: subsection \<open>auxiliary functions\<close>
wneuper@59530: ML \<open>
wneuper@59530: val poly_consts =
wenzelm@60309:   [\<^const_name>\<open>plus\<close>, \<^const_name>\<open>minus\<close>,
wenzelm@60309:   \<^const_name>\<open>divide\<close>, \<^const_name>\<open>times\<close>,
wenzelm@60405:   \<^const_name>\<open>realpow\<close>];
walther@60321: 
walther@60321: val int_ord_SAVE = int_ord;
walther@60321: (*for tests on rewrite orders*)
walther@60321: fun int_ord (i1, i2) =
walther@60321: (@{print} {a = "int_ord (" ^ string_of_int i1 ^ ", " ^ string_of_int i2 ^ ") = ", z = Int.compare (i1, i2)};
walther@60321:   Int.compare (i1, i2));
walther@60321: (**)val int_ord = int_ord_SAVE; (*..outcomment for tests*)
wneuper@59530: \<close>
wneuper@59523: subsubsection \<open>for predicates in specifications (ML)\<close>
wneuper@59472: ML \<open>
wneuper@59522: (*--- auxiliary for is_expanded_in, is_poly_in, has_degree_in ---*)
walther@60317: (*. a "monomial t in variable v" is a term t with
wneuper@59522:   either (1) v NOT existent in t, or (2) v contained in t,
wneuper@59522:   if (1) then degree 0
walther@60317:   if (2) then v is a factor on the very right, casually with exponent.*)
wneuper@59522: fun factor_right_deg (*case 2*)
walther@60335: 	    (Const (\<^const_name>\<open>Groups.times_class.times\<close>, _) $
wenzelm@60405:         t1 $ (Const (\<^const_name>\<open>realpow\<close>,_) $ vv $ num)) v =
walther@60317: 	  if vv = v andalso not (Prog_Expr.occurs_in v t1) then SOME (snd (HOLogic.dest_number num))
walther@60317:     else NONE
wenzelm@60405:   | factor_right_deg (Const (\<^const_name>\<open>realpow\<close>,_) $ vv $ num) v =
walther@60317: 	   if (vv = v) then SOME (snd (HOLogic.dest_number num)) else NONE
walther@60331: 
wenzelm@60309:   | factor_right_deg (Const (\<^const_name>\<open>times\<close>,_) $ t1 $ vv) v = 
walther@59603: 	   if vv = v andalso not (Prog_Expr.occurs_in v t1) then SOME 1 else NONE
wneuper@59522:   | factor_right_deg vv v =
wneuper@59522: 	  if (vv = v) then SOME 1 else NONE;    
wneuper@59522: fun mono_deg_in m v =  (*case 1*)
walther@59603: 	if not (Prog_Expr.occurs_in v m) then (*case 1*) SOME 0 else factor_right_deg m v;
wneuper@59522: 
wneuper@59522: fun expand_deg_in t v =
wneuper@59522: 	let
wenzelm@60309:     fun edi ~1 ~1 (Const (\<^const_name>\<open>plus\<close>, _) $ t1 $ t2) =
wneuper@59522:           (case mono_deg_in t2 v of (* $ is left associative*)
wneuper@59522:             SOME d' => edi d' d' t1 | NONE => NONE)
wenzelm@60309:       | edi ~1 ~1 (Const (\<^const_name>\<open>minus\<close>, _) $ t1 $ t2) =
wneuper@59522:           (case mono_deg_in t2 v of
wneuper@59522:             SOME d' => edi d' d' t1 | NONE => NONE)
wenzelm@60309:       | edi d dmax (Const (\<^const_name>\<open>minus\<close>, _) $ t1 $ t2) =
wneuper@59522:           (case mono_deg_in t2 v of (*(d = 0 andalso d' = 0) handle 3+4-...4 +x*)
wneuper@59522: 	        SOME d' => if d > d' orelse (d = 0 andalso d' = 0) then edi d' dmax t1 else NONE
wneuper@59522:           | NONE => NONE)
wenzelm@60309:       | edi d dmax (Const (\<^const_name>\<open>plus\<close>,_) $ t1 $ t2) =
wneuper@59522:           (case mono_deg_in t2 v of
wneuper@59522:             SOME d' =>    (*RL (d = 0 andalso d' = 0) need to handle 3+4-...4 +x*)
wneuper@59522:               if d > d' orelse (d = 0 andalso d' = 0) then edi d' dmax t1 else NONE
wneuper@59522:           | NONE => NONE)
wneuper@59522:       | edi ~1 ~1 t =
wneuper@59522:           (case mono_deg_in t v of d as SOME _ => d | NONE => NONE)
wneuper@59522:       | edi d dmax t = (*basecase last*)
wneuper@59522:     	    (case mono_deg_in t v of
wneuper@59522:     	      SOME d' => if d > d' orelse (d = 0 andalso d' = 0) then SOME dmax else NONE
wneuper@59522: 		      | NONE => NONE)
wneuper@59522: 	in edi ~1 ~1 t end;
wneuper@59522: 
wneuper@59522: fun poly_deg_in t v =
wneuper@59522: 	let
wenzelm@60309:     fun edi ~1 ~1 (Const (\<^const_name>\<open>plus\<close>,_) $ t1 $ t2) =
wneuper@59522: 		    (case mono_deg_in t2 v of (* $ is left associative *)
wneuper@59522: 		      SOME d' => edi d' d' t1
wneuper@59522:         | NONE => NONE)
wenzelm@60309: 	    | edi d dmax (Const (\<^const_name>\<open>plus\<close>,_) $ t1 $ t2) =
wneuper@59522: 		    (case mono_deg_in t2 v of
wneuper@59522: 	        SOME d' =>    (*RL (d = 0 andalso (d' = 0)) handle 3+4-...4 +x*)
wneuper@59522:             if d > d' orelse (d = 0 andalso d' = 0) then edi d' dmax t1 else NONE
wneuper@59522:         | NONE => NONE)
wneuper@59522: 	    | edi ~1 ~1 t =
wneuper@59522:         (case mono_deg_in t v of
wneuper@59522: 		      d as SOME _ => d
wneuper@59522:         | NONE => NONE)
wneuper@59522: 	    | edi d dmax t = (* basecase last *)
wneuper@59522: 		    (case mono_deg_in t v of
wneuper@59522: 		      SOME d' =>
wneuper@59522:             if d > d' orelse (d = 0 andalso d' = 0) then SOME dmax else NONE
wneuper@59522:         | NONE => NONE)
wneuper@59522: 	in edi ~1 ~1 t end;
wneuper@59523: \<close>
neuper@37950: 
wneuper@59523: subsubsection \<open>for hard-coded AC rewriting (MG)\<close>
wneuper@59523: ML \<open>
wneuper@59523: (**. MG.03: make_polynomial_ ... uses SML-fun for ordering .**)
neuper@37950: 
wneuper@59523: (*FIXME.0401: make SML-order local to make_polynomial(_) *)
wneuper@59523: (*FIXME.0401: replace 'make_polynomial'(old) by 'make_polynomial_'(MG) *)
wneuper@59523: (* Polynom --> List von Monomen *) 
wenzelm@60309: fun poly2list (Const (\<^const_name>\<open>plus\<close>,_) $ t1 $ t2) = 
wneuper@59523:     (poly2list t1) @ (poly2list t2)
wneuper@59523:   | poly2list t = [t];
neuper@37950: 
wneuper@59523: (* Monom --> Liste von Variablen *)
wenzelm@60309: fun monom2list (Const (\<^const_name>\<open>times\<close>,_) $ t1 $ t2) = 
wneuper@59523:     (monom2list t1) @ (monom2list t2)
wneuper@59523:   | monom2list t = [t];
neuper@37950: 
wneuper@59523: (* liefert Variablenname (String) einer Variablen und Basis bei Potenz *)
wenzelm@60405: fun get_basStr (Const (\<^const_name>\<open>realpow\<close>,_) $ Free (str, _) $ _) = str
wenzelm@60405:   | get_basStr (Const (\<^const_name>\<open>realpow\<close>,_) $ n $ _) = TermC.to_string n
wneuper@59523:   | get_basStr (Free (str, _)) = str
walther@60318:   | get_basStr t =
walther@60322:     if TermC.is_num t then TermC.to_string t
walther@60318:     else "|||"; (* gross gewichtet; für Brüche ect. *)
neuper@37950: 
wneuper@59523: (* liefert Hochzahl (String) einer Variablen bzw Gewichtstring (zum Sortieren) *)
wenzelm@60405: fun get_potStr (Const (\<^const_name>\<open>realpow\<close>, _) $ Free _ $ Free (str, _)) = str
wenzelm@60405:   | get_potStr (Const (\<^const_name>\<open>realpow\<close>, _) $ Free _ $ t) =
walther@60322:     if TermC.is_num t then TermC.to_string t else "|||"
walther@60321:   | get_potStr (Free _) = "---" (* keine Hochzahl --> kleinst gewichtet *)
wneuper@59523:   | get_potStr _ = "||||||"; (* gross gewichtet; für Brüch ect. *)
neuper@37978: 
wneuper@59523: (* Umgekehrte string_ord *)
wneuper@59523: val string_ord_rev =  rev_order o string_ord;
wneuper@59523: 		
wneuper@59523:  (* Ordnung zum lexikographischen Vergleich zweier Variablen (oder Potenzen) 
wneuper@59523:     innerhalb eines Monomes:
wneuper@59523:     - zuerst lexikographisch nach Variablenname 
wneuper@59523:     - wenn gleich: nach steigender Potenz *)
walther@60321: fun var_ord (a, b) = 
walther@60321: (@{print} {a = "var_ord ", a_b = "(" ^ UnparseC.term a ^ ", " ^ UnparseC.term b ^ ")",
walther@60321:    sort_args = "(" ^ get_basStr a ^ ", " ^ get_potStr a ^ "), (" ^ get_basStr b ^ ", " ^ get_potStr b ^ ")"};
walther@60321:   prod_ord string_ord string_ord 
walther@60321:   ((get_basStr a, get_potStr a), (get_basStr b, get_potStr b))
walther@60321: );
walther@60318: fun var_ord (a,b: term) = 
walther@60318:   prod_ord string_ord string_ord 
wneuper@59523:     ((get_basStr a, get_potStr a), (get_basStr b, get_potStr b));
neuper@37950: 
wneuper@59523: (* Ordnung zum lexikographischen Vergleich zweier Variablen (oder Potenzen); 
wneuper@59523:    verwendet zum Sortieren von Monomen mittels Gesamtgradordnung:
wneuper@59523:    - zuerst lexikographisch nach Variablenname 
wneuper@59523:    - wenn gleich: nach sinkender Potenz*)
walther@60321: fun var_ord_revPow (a, b: term) = 
walther@60321: (@{print} {a = "var_ord_revPow ", at_bt = "(" ^ UnparseC.term a ^ ", " ^ UnparseC.term b ^ ")",
walther@60321:     sort_args = "(" ^ get_basStr a ^ ", " ^ get_potStr a ^ "), (" ^ get_basStr b ^ ", " ^ get_potStr b ^ ")"};
walther@60321:   prod_ord string_ord string_ord_rev 
walther@60321:     ((get_basStr a, get_potStr a), (get_basStr b, get_potStr b))
walther@60321: );
walther@60318: fun var_ord_revPow (a, b: term) =
walther@60318:   prod_ord string_ord string_ord_rev 
wneuper@59523:     ((get_basStr a, get_potStr a), (get_basStr b, get_potStr b));
neuper@37950: 
walther@60278: 
wneuper@59523: (* Ordnet ein Liste von Variablen (und Potenzen) lexikographisch *)
walther@60321: fun sort_varList ts =
walther@60321: (@{print} {a = "sort_varList", args = UnparseC.terms ts};
walther@60321:   sort var_ord ts);
wneuper@59523: val sort_varList = sort var_ord;
wneuper@59523: 
wneuper@59523: (* Entfernet aeussersten Operator (Wurzel) aus einem Term und schreibt 
wneuper@59523:    Argumente in eine Liste *)
wneuper@59523: fun args u : term list =
walther@60318:   let
walther@60318:     fun stripc (f $ t, ts) = stripc (f, t::ts)
walther@60318:   	  | stripc (t as Free _, ts) = (t::ts)
walther@60318:   	  | stripc (_, ts) = ts
walther@60318:   in stripc (u, []) end;
wneuper@59523:                                     
wneuper@59523: (* liefert True, falls der Term (Liste von Termen) nur Zahlen 
wneuper@59523:    (keine Variablen) enthaelt *)
walther@60317: fun filter_num ts = fold (curry and_) (map TermC.is_num ts) true
wneuper@59523: 
wneuper@59523: (* liefert True, falls der Term nur Zahlen (keine Variablen) enthaelt 
wneuper@59523:    dh. er ist ein numerischer Wert und entspricht einem Koeffizienten *)
wneuper@59523: fun is_nums t = filter_num [t];
wneuper@59523: 
wneuper@59523: (* Berechnet den Gesamtgrad eines Monoms *)
walther@60318: (**)local(**)
walther@60317:   fun counter (n, []) = n
walther@60317:     | counter (n, x :: xs) = 
walther@60317: 	    if (is_nums x) then counter (n, xs)
walther@60317: 	    else 
walther@60317: 	      (case x of 
wenzelm@60405: 		      (Const (\<^const_name>\<open>realpow\<close>, _) $ Free _ $ t) =>
walther@60318:             if TermC.is_num t
walther@60318:             then counter (t |> HOLogic.dest_number |> snd |> curry op + n, xs)
walther@60318:             else counter (n + 1000, xs) (*FIXME.MG?!*)
walther@60335: 	      | (Const (\<^const_name>\<open>numeral\<close>, _) $ num) =>
walther@60318:             counter (n + 1 + HOLogic.dest_numeral num, xs)
walther@60318: 	      | _ => counter (n + 1, xs)) (*FIXME.MG?! ... Brüche ect.*)
walther@60318: (**)in(**)
walther@60317:   fun monom_degree l = counter (0, l) 
walther@60318: (**)end;(*local*)
wneuper@59523: 
wneuper@59523: (* wie Ordnung dict_ord (lexicographische Ordnung zweier Listen, mit Vergleich 
wneuper@59523:    der Listen-Elemente mit elem_ord) - Elemente die Bedingung cond erfuellen, 
wneuper@59523:    werden jedoch dabei ignoriert (uebersprungen)  *)
walther@60321: fun dict_cond_ord _ _ ([], [])     = (@{print} {a = "dict_cond_ord ([], [])"}; EQUAL)
walther@60321:   | dict_cond_ord _ _ ([], _ :: _) = (@{print} {a = "dict_cond_ord ([], _ :: _)"}; LESS)
walther@60321:   | dict_cond_ord _ _ (_ :: _, []) = (@{print} {a = "dict_cond_ord (_ :: _, [])"}; GREATER)
walther@60321:   | dict_cond_ord elem_ord cond (x :: xs, y :: ys) =
walther@60321:     (@{print} {a = "dict_cond_ord", args = "(" ^ UnparseC.terms (x :: xs) ^ ", " ^ UnparseC.terms (y :: ys) ^ ")", 
walther@60321:       is_nums = "(" ^ LibraryC.bool2str (cond x) ^ ", " ^ LibraryC.bool2str (cond y) ^ ")"};
walther@60321:      case (cond x, cond y) of 
walther@60321: 	    (false, false) =>
walther@60321:         (case elem_ord (x, y) of 
walther@60321: 				  EQUAL => dict_cond_ord elem_ord cond (xs, ys) 
walther@60321: 			  | ord => ord)
walther@60321:     | (false, true)  => dict_cond_ord elem_ord cond (x :: xs, ys)
walther@60321:     | (true, false)  => dict_cond_ord elem_ord cond (xs, y :: ys)
walther@60321:     | (true, true)  =>  dict_cond_ord elem_ord cond (xs, ys) );
wneuper@59523: fun dict_cond_ord _ _ ([], []) = EQUAL
wneuper@59523:   | dict_cond_ord _ _ ([], _ :: _) = LESS
wneuper@59523:   | dict_cond_ord _ _ (_ :: _, []) = GREATER
wneuper@59523:   | dict_cond_ord elem_ord cond (x :: xs, y :: ys) =
wneuper@59523:     (case (cond x, cond y) of 
walther@60318: 	    (false, false) =>
walther@60318:         (case elem_ord (x, y) of 
walther@60318: 				  EQUAL => dict_cond_ord elem_ord cond (xs, ys) 
walther@60318: 			  | ord => ord)
walther@60318:     | (false, true)  => dict_cond_ord elem_ord cond (x :: xs, ys)
walther@60318:     | (true, false)  => dict_cond_ord elem_ord cond (xs, y :: ys)
walther@60318:     | (true, true)  =>  dict_cond_ord elem_ord cond (xs, ys) );
wneuper@59523: 
wneuper@59523: (* Gesamtgradordnung zum Vergleich von Monomen (Liste von Variablen/Potenzen):
wneuper@59523:    zuerst nach Gesamtgrad, bei gleichem Gesamtgrad lexikographisch ordnen - 
walther@60260:    dabei werden Koeffizienten ignoriert (2*3*a \<up> 2*4*b gilt wie a \<up> 2*b) *)
wneuper@59523: fun degree_ord (xs, ys) =
walther@60318: 	prod_ord int_ord (dict_cond_ord var_ord_revPow is_nums)
walther@60318: 	  ((monom_degree xs, xs), (monom_degree ys, ys));
wneuper@59523: 
wneuper@59523: fun hd_str str = substring (str, 0, 1);
wneuper@59523: fun tl_str str = substring (str, 1, (size str) - 1);
wneuper@59523: 
wneuper@59523: (* liefert nummerischen Koeffizienten eines Monoms oder NONE *)
walther@60318: fun get_koeff_of_mon [] = raise ERROR "get_koeff_of_mon: called with l = []"
walther@60318:   | get_koeff_of_mon (x :: _) = if is_nums x then SOME x else NONE;
wneuper@59523: 
wneuper@59523: (* wandelt Koeffizient in (zum sortieren geeigneten) String um *)
walther@60318: fun koeff2ordStr (SOME t) =
walther@60318:     if TermC.is_num t
walther@60318:     then 
walther@60318:       if (t |> HOLogic.dest_number |> snd) < 0
walther@60318:       then (t |> HOLogic.dest_number |> snd |> curry op * ~1 |> string_of_int) ^ "0"  (* 3 < -3 *)
walther@60318:       else (t |> HOLogic.dest_number |> snd |> string_of_int)
walther@60318:     else "aaa"                                                      (* "num.Ausdruck" --> gross *)
walther@60318:   | koeff2ordStr NONE = "---";                                     (* "kein Koeff" --> kleinste *)
wneuper@59523: 
wneuper@59523: (* Order zum Vergleich von Koeffizienten (strings): 
wneuper@59523:    "kein Koeff" < "0" < "1" < "-1" < "2" < "-2" < ... < "num.Ausdruck" *)
walther@60318: fun compare_koeff_ord (xs, ys) = string_ord
walther@60318:   ((koeff2ordStr o get_koeff_of_mon) xs,
walther@60318:    (koeff2ordStr o get_koeff_of_mon) ys);
wneuper@59523: 
wneuper@59523: (* Gesamtgradordnung degree_ord + Ordnen nach Koeffizienten falls EQUAL *)
wneuper@59523: fun koeff_degree_ord (xs, ys) =
wneuper@59523: 	    prod_ord degree_ord compare_koeff_ord ((xs, xs), (ys, ys));
wneuper@59523: 
wneuper@59523: (* Ordnet ein Liste von Monomen (Monom = Liste von Variablen) mittels 
wneuper@59523:    Gesamtgradordnung *)
wneuper@59523: val sort_monList = sort koeff_degree_ord;
wneuper@59523: 
wneuper@59523: (* Alternativ zu degree_ord koennte auch die viel einfachere und 
wneuper@59523:    kuerzere Ordnung simple_ord verwendet werden - ist aber nicht 
wneuper@59523:    fuer unsere Zwecke geeignet!
wneuper@59523: 
wneuper@59523: fun simple_ord (al,bl: term list) = dict_ord string_ord 
wneuper@59523: 	 (map get_basStr al, map get_basStr bl); 
wneuper@59523: 
wneuper@59523: val sort_monList = sort simple_ord; *)
wneuper@59523: 
wneuper@59523: (* aus 2 Variablen wird eine Summe bzw ein Produkt erzeugt 
wneuper@59523:    (mit gewuenschtem Typen T) *)
wenzelm@60309: fun plus T = Const (\<^const_name>\<open>plus\<close>, [T,T] ---> T);
wenzelm@60309: fun mult T = Const (\<^const_name>\<open>times\<close>, [T,T] ---> T);
wneuper@59523: fun binop op_ t1 t2 = op_ $ t1 $ t2;
wneuper@59523: fun create_prod T (a,b) = binop (mult T) a b;
wneuper@59523: fun create_sum T (a,b) = binop (plus T) a b;
wneuper@59523: 
wneuper@59523: (* löscht letztes Element einer Liste *)
wneuper@59523: fun drop_last l = take ((length l)-1,l);
wneuper@59523: 
wneuper@59523: (* Liste von Variablen --> Monom *)
wneuper@59523: fun create_monom T vl = foldr (create_prod T) (drop_last vl, last_elem vl);
wneuper@59523: (* Bemerkung: 
wneuper@59523:    foldr bewirkt rechtslastige Klammerung des Monoms - ist notwendig, damit zwei 
wneuper@59523:    gleiche Monome zusammengefasst werden können (collect_numerals)! 
wneuper@59523:    zB: 2*(x*(y*z)) + 3*(x*(y*z)) --> (2+3)*(x*(y*z))*)
wneuper@59523: 
wneuper@59523: (* Liste von Monomen --> Polynom *)	
wneuper@59523: fun create_polynom T ml = foldl (create_sum T) (hd ml, tl ml);
wneuper@59523: (* Bemerkung: 
wneuper@59523:    foldl bewirkt linkslastige Klammerung des Polynoms (der Summanten) - 
wneuper@59523:    bessere Darstellung, da keine Klammern sichtbar! 
wneuper@59523:    (und discard_parentheses in make_polynomial hat weniger zu tun) *)
wneuper@59523: 
wneuper@59523: (* sorts the variables (faktors) of an expanded polynomial lexicographical *)
wneuper@59523: fun sort_variables t = 
walther@60317:   let
walther@60317:   	val ll = map monom2list (poly2list t);
walther@60317:   	val lls = map sort_varList ll; 
walther@60317:   	val T = type_of t;
walther@60317:   	val ls = map (create_monom T) lls;
walther@60317:   in create_polynom T ls end;
wneuper@59523: 
wneuper@59523: (* sorts the monoms of an expanded and variable-sorted polynomial 
wneuper@59523:    by total_degree *)
wneuper@59523: fun sort_monoms t = 
walther@60318:   let
walther@60318:   	val ll =  map monom2list (poly2list t);
walther@60318:   	val lls = sort_monList ll;
walther@60318:   	val T = Term.type_of t;
walther@60318:   	val ls = map (create_monom T) lls;
walther@60318:   in create_polynom T ls end;
wneuper@59523: \<close>
wneuper@59523: 
wneuper@59523: subsubsection \<open>rewrite order for hard-coded AC rewriting\<close>
wneuper@59523: ML \<open>
neuper@37950: local (*. for make_polynomial .*)
neuper@37950: 
neuper@37950: open Term;  (* for type order = EQUAL | LESS | GREATER *)
neuper@37950: 
neuper@37950: fun pr_ord EQUAL = "EQUAL"
neuper@37950:   | pr_ord LESS  = "LESS"
neuper@37950:   | pr_ord GREATER = "GREATER";
neuper@37950: 
neuper@37950: fun dest_hd' (Const (a, T)) =                          (* ~ term.ML *)
neuper@37950:   (case a of
wenzelm@60405:      \<^const_name>\<open>realpow\<close> => ((("|||||||||||||", 0), T), 0)    (*WN greatest string*)
neuper@37950:    | _ => (((a, 0), T), 0))
walther@60317:   | dest_hd' (Free (a, T)) = (((a, 0), T), 1)(*TODOO handle this as numeral, too? see EqSystem.thy*)
neuper@37950:   | dest_hd' (Var v) = (v, 2)
neuper@37950:   | dest_hd' (Bound i) = ((("", i), dummyT), 3)
wneuper@59523:   | dest_hd' (Abs (_, T, _)) = ((("", 0), T), 4)
wneuper@59523:   | dest_hd' t = raise TERM ("dest_hd'", [t]);
neuper@37950: 
neuper@37950: fun size_of_term' (Const(str,_) $ t) =
wenzelm@60405:   if \<^const_name>\<open>realpow\<close>= str then 1000 + size_of_term' t else 1+size_of_term' t(*WN*)
neuper@37950:   | size_of_term' (Abs (_,_,body)) = 1 + size_of_term' body
neuper@37950:   | size_of_term' (f$t) = size_of_term' f  +  size_of_term' t
neuper@37950:   | size_of_term' _ = 1;
neuper@37950: 
neuper@37950: fun term_ord' pr thy (Abs (_, T, t), Abs(_, U, u)) =       (* ~ term.ML *)
neuper@52070:     (case term_ord' pr thy (t, u) of EQUAL => Term_Ord.typ_ord (T, U) | ord => ord)
neuper@37950:   | term_ord' pr thy (t, u) =
neuper@52070:     (if pr then 
neuper@52070: 	   let
neuper@52070:        val (f, ts) = strip_comb t and (g, us) = strip_comb u;
walther@59870:        val _ = tracing ("t= f@ts= \"" ^ UnparseC.term_in_thy thy f ^ "\" @ \"[" ^
walther@59870:          commas (map (UnparseC.term_in_thy thy) ts) ^ "]\"");
walther@59870:        val _ = tracing("u= g@us= \"" ^ UnparseC.term_in_thy thy g ^ "\" @ \"[" ^
walther@59870:          commas (map (UnparseC.term_in_thy thy) us) ^ "]\"");
neuper@52070:        val _ = tracing ("size_of_term(t,u)= (" ^ string_of_int (size_of_term' t) ^ ", " ^
neuper@52070:          string_of_int (size_of_term' u) ^ ")");
neuper@52070:        val _ = tracing ("hd_ord(f,g)      = " ^ (pr_ord o hd_ord) (f,g));
neuper@52070:        val _ = tracing ("terms_ord(ts,us) = " ^ (pr_ord o terms_ord str false) (ts, us));
neuper@52070:        val _ = tracing ("-------");
neuper@52070:      in () end
neuper@37950:        else ();
neuper@37950: 	 case int_ord (size_of_term' t, size_of_term' u) of
neuper@37950: 	   EQUAL =>
neuper@37950: 	     let val (f, ts) = strip_comb t and (g, us) = strip_comb u in
neuper@37950: 	       (case hd_ord (f, g) of EQUAL => (terms_ord str pr) (ts, us) 
neuper@37950: 	     | ord => ord)
neuper@37950: 	     end
neuper@37950: 	 | ord => ord)
neuper@37950: and hd_ord (f, g) =                                        (* ~ term.ML *)
neuper@37974:   prod_ord (prod_ord Term_Ord.indexname_ord Term_Ord.typ_ord) int_ord (dest_hd' f, dest_hd' g)
wneuper@59523: and terms_ord _ pr (ts, us) = 
walther@59881:     list_ord (term_ord' pr (ThyC.get_theory "Isac_Knowledge"))(ts, us);
neuper@52070: 
neuper@37950: in
neuper@37950: 
walther@60324: fun ord_make_polynomial (pr:bool) thy (_: subst) (ts, us) =
walther@60324:     (term_ord' pr thy(***) (TermC.numerals_to_Free ts, TermC.numerals_to_Free us) = LESS );
neuper@37950: 
neuper@37950: end;(*local*)
Walther@60506: \<close> 
Walther@60506: setup \<open>KEStore_Elems.add_rew_ord [
Walther@60506:   ("termlessI", termlessI), 
Walther@60506:   ("ord_make_polynomial", ord_make_polynomial false \<^theory>)]\<close>
neuper@37950: 
wneuper@59523: subsection \<open>predicates\<close>
wneuper@59523: subsubsection \<open>in specifications\<close>
wneuper@59523: ML \<open>
wneuper@59523: (* is_polyrat_in becomes true, if no bdv is in the denominator of a fraction*)
wneuper@59523: fun is_polyrat_in t v = 
wneuper@59524:   let
walther@59962:    	fun finddivide (_ $ _ $ _ $ _) _ = raise ERROR("is_polyrat_in:")
wneuper@59523: 	    (* at the moment there is no term like this, but ....*)
wenzelm@60309: 	  | finddivide (Const (\<^const_name>\<open>divide\<close>,_) $ _ $ b) v = not (Prog_Expr.occurs_in v b)
wneuper@59524: 	  | finddivide (_ $ t1 $ t2) v = finddivide t1 v orelse finddivide t2 v
wneuper@59524: 	  | finddivide (_ $ t1) v = finddivide t1 v
wneuper@59523: 	  | finddivide _ _ = false;
wneuper@59524:   in finddivide t v end;
wneuper@59523:     
wneuper@59524: fun is_expanded_in t v = case expand_deg_in t v of SOME _ => true | NONE => false;
wneuper@59524: fun is_poly_in t v =     case poly_deg_in t v of SOME _ => true | NONE => false;
wneuper@59524: fun has_degree_in t v =  case expand_deg_in t v of SOME d => d | NONE => ~1;
neuper@37950: 
wneuper@59523: (*.the expression contains + - * ^ only ?
wneuper@59523:    this is weaker than 'is_polynomial' !.*)
wneuper@59523: fun is_polyexp (Free _) = true
wneuper@59529:   | is_polyexp (Const _) = true (* potential danger: bdv is not considered *)
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>plus\<close>,_) $ Free _ $ num) =
walther@60318:     if TermC.is_num num then true
walther@60318:     else if TermC.is_variable num then true
walther@60318:     else is_polyexp num
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>plus\<close>, _) $ num $ Free _) =
walther@60318:     if TermC.is_num num then true
walther@60318:     else if TermC.is_variable num then true
walther@60318:     else is_polyexp num
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>minus\<close>, _) $ Free _ $ num) =
walther@60318:     if TermC.is_num num then true
walther@60318:     else if TermC.is_variable num then true
walther@60318:     else is_polyexp num
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>times\<close>, _) $ num $ Free _) =
walther@60318:     if TermC.is_num num then true
walther@60318:     else if TermC.is_variable num then true
walther@60318:     else is_polyexp num
wenzelm@60405:   | is_polyexp (Const (\<^const_name>\<open>realpow\<close>,_) $ Free _ $ num) =
walther@60318:     if TermC.is_num num then true
walther@60318:     else if TermC.is_variable num then true
walther@60318:     else is_polyexp num
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>plus_class.plus\<close>,_) $ t1 $ t2) = 
walther@60318:     ((is_polyexp t1) andalso (is_polyexp t2))
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>Groups.minus_class.minus\<close>,_) $ t1 $ t2) = 
walther@60318:     ((is_polyexp t1) andalso (is_polyexp t2))
walther@60335:   | is_polyexp (Const (\<^const_name>\<open>Groups.times_class.times\<close>,_) $ t1 $ t2) = 
walther@60318:     ((is_polyexp t1) andalso (is_polyexp t2))
wenzelm@60405:   | is_polyexp (Const (\<^const_name>\<open>realpow\<close>,_) $ t1 $ t2) = 
walther@60318:     ((is_polyexp t1) andalso (is_polyexp t2))
walther@60317:   | is_polyexp num = TermC.is_num num;
wneuper@59523: \<close>
neuper@37950: 
wneuper@59523: subsubsection \<open>for hard-coded AC rewriting\<close>
wneuper@59523: ML \<open>
wneuper@59523: (* auch Klammerung muss übereinstimmen;
wneuper@59523:    sort_variables klammert Produkte rechtslastig*)
wneuper@59523: fun is_multUnordered t = ((is_polyexp t) andalso not (t = sort_variables t));
wneuper@59523: 
wneuper@59523: fun is_addUnordered t = ((is_polyexp t) andalso not (t = sort_monoms t));
wneuper@59523: \<close>
wneuper@59523: 
wneuper@59523: subsection \<open>evaluations functions\<close>
walther@60278: subsubsection \<open>for predicates\<close>
wneuper@59523: ML \<open>
walther@60335: fun eval_is_polyrat_in _ _(p as (Const (\<^const_name>\<open>Poly.is_polyrat_in\<close>, _) $ t $ v)) _  =
wneuper@59523:     if is_polyrat_in t v 
walther@59868:     then SOME ((UnparseC.term p) ^ " = True",
wneuper@59523: 	        HOLogic.Trueprop $ (TermC.mk_equality (p, @{term True})))
walther@59868:     else SOME ((UnparseC.term p) ^ " = True",
wneuper@59523: 	        HOLogic.Trueprop $ (TermC.mk_equality (p, @{term False})))
wneuper@59523:   | eval_is_polyrat_in _ _ _ _ = ((*tracing"### no matches";*) NONE);
wneuper@59523: 
walther@60278: (*("is_expanded_in", ("Poly.is_expanded_in", eval_is_expanded_in ""))*)
wneuper@59523: fun eval_is_expanded_in _ _ 
walther@60335:        (p as (Const (\<^const_name>\<open>Poly.is_expanded_in\<close>, _) $ t $ v)) _ =
wneuper@59523:     if is_expanded_in t v
walther@59868:     then SOME ((UnparseC.term p) ^ " = True",
wneuper@59523: 	        HOLogic.Trueprop $ (TermC.mk_equality (p, @{term True})))
walther@59868:     else SOME ((UnparseC.term p) ^ " = True",
wneuper@59523: 	        HOLogic.Trueprop $ (TermC.mk_equality (p, @{term False})))
wneuper@59523:   | eval_is_expanded_in _ _ _ _ = NONE;
wneuper@59523: 
walther@60278: (*("is_poly_in", ("Poly.is_poly_in", eval_is_poly_in ""))*)
wneuper@59523: fun eval_is_poly_in _ _ 
walther@60335:        (p as (Const (\<^const_name>\<open>Poly.is_poly_in\<close>, _) $ t $ v)) _ =
wneuper@59523:     if is_poly_in t v
walther@59868:     then SOME ((UnparseC.term p) ^ " = True",
wneuper@59523: 	        HOLogic.Trueprop $ (TermC.mk_equality (p, @{term True})))
walther@59868:     else SOME ((UnparseC.term p) ^ " = True",
wneuper@59523: 	        HOLogic.Trueprop $ (TermC.mk_equality (p, @{term False})))
wneuper@59523:   | eval_is_poly_in _ _ _ _ = NONE;
wneuper@59523: 
walther@60278: (*("has_degree_in", ("Poly.has_degree_in", eval_has_degree_in ""))*)
wneuper@59523: fun eval_has_degree_in _ _ 
walther@60335: 	     (p as (Const (\<^const_name>\<open>Poly.has_degree_in\<close>, _) $ t $ v)) _ =
wneuper@59523:     let val d = has_degree_in t v
wneuper@59523: 	val d' = TermC.term_of_num HOLogic.realT d
walther@59868:     in SOME ((UnparseC.term p) ^ " = " ^ (string_of_int d),
wneuper@59523: 	      HOLogic.Trueprop $ (TermC.mk_equality (p, d')))
wneuper@59523:     end
wneuper@59523:   | eval_has_degree_in _ _ _ _ = NONE;
wneuper@59523: 
walther@60278: (*("is_polyexp", ("Poly.is_polyexp", eval_is_polyexp ""))*)
wneuper@59523: fun eval_is_polyexp (thmid:string) _ 
Walther@60504: 		       (t as (Const (\<^const_name>\<open>is_polyexp\<close>, _) $ arg)) ctxt = 
wneuper@59523:     if is_polyexp arg
Walther@60504:     then SOME (TermC.mk_thmid thmid (UnparseC.term_in_ctxt ctxt arg) "", 
wneuper@59523: 	         HOLogic.Trueprop $ (TermC.mk_equality (t, @{term True})))
Walther@60504:     else SOME (TermC.mk_thmid thmid (UnparseC.term_in_ctxt ctxt arg) "", 
wneuper@59523: 	         HOLogic.Trueprop $ (TermC.mk_equality (t, @{term False})))
wneuper@59523:   | eval_is_polyexp _ _ _ _ = NONE; 
wneuper@59523: \<close>
wneuper@59523: 
wneuper@59523: subsubsection \<open>for hard-coded AC rewriting\<close>
wneuper@59523: ML \<open>
wneuper@59523: (*WN.18.6.03 *)
walther@60278: (*("is_addUnordered", ("Poly.is_addUnordered", eval_is_addUnordered ""))*)
wneuper@59523: fun eval_is_addUnordered (thmid:string) _ 
Walther@60504: 		       (t as (Const (\<^const_name>\<open>is_addUnordered\<close>, _) $ arg)) ctxt = 
wneuper@59523:     if is_addUnordered arg
Walther@60504:     then SOME (TermC.mk_thmid thmid (UnparseC.term_in_ctxt ctxt arg) "", 
wneuper@59523: 	         HOLogic.Trueprop $ (TermC.mk_equality (t, @{term True})))
Walther@60504:     else SOME (TermC.mk_thmid thmid (UnparseC.term_in_ctxt ctxt arg) "", 
wneuper@59523: 	         HOLogic.Trueprop $ (TermC.mk_equality (t, @{term False})))
wneuper@59523:   | eval_is_addUnordered _ _ _ _ = NONE; 
wneuper@59523: 
wneuper@59523: fun eval_is_multUnordered (thmid:string) _ 
Walther@60504: 		       (t as (Const (\<^const_name>\<open>is_multUnordered\<close>, _) $ arg)) ctxt = 
wneuper@59523:     if is_multUnordered arg
Walther@60504:     then SOME (TermC.mk_thmid thmid (UnparseC.term_in_ctxt ctxt arg) "", 
wneuper@59523: 	         HOLogic.Trueprop $ (TermC.mk_equality (t, @{term True})))
Walther@60504:     else SOME (TermC.mk_thmid thmid (UnparseC.term_in_ctxt ctxt arg) "", 
wneuper@59523: 	         HOLogic.Trueprop $ (TermC.mk_equality (t, @{term False})))
wneuper@59523:   | eval_is_multUnordered _ _ _ _ = NONE; 
wneuper@59523: \<close>
wenzelm@60313: calculation is_polyrat_in = \<open>eval_is_polyrat_in "#eval_is_polyrat_in"\<close>
wenzelm@60313: calculation is_expanded_in = \<open>eval_is_expanded_in ""\<close>
wenzelm@60313: calculation is_poly_in = \<open>eval_is_poly_in ""\<close>
wenzelm@60313: calculation has_degree_in = \<open>eval_has_degree_in ""\<close>
wenzelm@60313: calculation is_polyexp = \<open>eval_is_polyexp ""\<close>
wenzelm@60313: calculation is_multUnordered = \<open>eval_is_multUnordered ""\<close>
wenzelm@60313: calculation is_addUnordered = \<open>eval_is_addUnordered ""\<close>
wneuper@59523: 
wneuper@59523: subsection \<open>rule-sets\<close>
wneuper@59523: subsubsection \<open>without specific order\<close>
wneuper@59523: ML \<open>
wneuper@59523: (* used only for merge *)
walther@59852: val calculate_Poly = Rule_Set.append_rules "calculate_PolyFIXXXME.not.impl." Rule_Set.empty [];
wneuper@59523: 
wneuper@59523: (*.for evaluation of conditions in rewrite rules.*)
walther@60358: val Poly_erls = Rule_Set.append_rules "Poly_erls" Atools_erls [
walther@60358:   \<^rule_eval>\<open>HOL.eq\<close> (Prog_Expr.eval_equal "#equal_"),
wenzelm@60297:   \<^rule_thm>\<open>real_unari_minus\<close>,
wenzelm@60294:   \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"),
wenzelm@60294:   \<^rule_eval>\<open>minus\<close> (eval_binop "#sub_"),
wenzelm@60294:   \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405:   \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_")];
wneuper@59523: 
walther@60358: val poly_crls = Rule_Set.append_rules "poly_crls" Atools_crls [
walther@60358:   \<^rule_eval>\<open>HOL.eq\<close> (Prog_Expr.eval_equal "#equal_"),
wenzelm@60297:   \<^rule_thm>\<open>real_unari_minus\<close>,
wenzelm@60294:   \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"),
wenzelm@60294:   \<^rule_eval>\<open>minus\<close> (eval_binop "#sub_"),
wenzelm@60294:   \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405:   \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_")];
wneuper@59523: \<close>
wneuper@59523: ML \<open>
neuper@37950: val expand =
Walther@60509:   Rule_Def.Repeat {id = "expand", preconds = [], rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852:       erls = Rule_Set.empty,srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>distrib_right\<close>, (*"(z1.0 + z2.0) * w = z1.0 * w + z2.0 * w"*)
walther@60358: 	      \<^rule_thm>\<open>distrib_left\<close> (*"w * (z1.0 + z2.0) = w * z1.0 + w * z2.0"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
walther@60385: \<close> ML \<open>
walther@60385: \<close> ML \<open>@{term "1 is_num"}\<close>
walther@60385: ML \<open>
walther@60320: (* erls for calculate_Rational + etc *)
walther@60318: val powers_erls =
Walther@60509:   Rule_Def.Repeat {id = "powers_erls", preconds = [], rew_ord = ("dummy_ord",Rewrite_Ord.function_empty), 
walther@60318:       erls = Rule_Set.empty, srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_eval>\<open>matches\<close> (Prog_Expr.eval_matches "#matches_"),
walther@60358:         \<^rule_eval>\<open>is_atom\<close> (Prog_Expr.eval_is_atom "#is_atom_"),
walther@60358:         \<^rule_eval>\<open>is_num\<close> (Prog_Expr.eval_is_num "#is_num_"),
walther@60358:         \<^rule_eval>\<open>is_even\<close> (Prog_Expr.eval_is_even "#is_even_"),
walther@60358:         \<^rule_eval>\<open>ord_class.less\<close> (Prog_Expr.eval_equ "#less_"),
walther@60358:         \<^rule_thm>\<open>not_false\<close>,
walther@60358:         \<^rule_thm>\<open>not_true\<close>,
walther@60358:         \<^rule_eval>\<open>plus_class.plus\<close> (eval_binop "#add_")],
walther@60358:       scr = Rule.Empty_Prog};
walther@60320: 
walther@60333: \<close> ML \<open>
walther@60320: val discard_minus =
Walther@60509:   Rule_Def.Repeat {id = "discard_minus", preconds = [], rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60320:       erls = powers_erls, srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60341:       rules = [
walther@60341:         \<^rule_thm>\<open>real_diff_minus\<close> (*"a - b = a + -1 * b"*),
walther@60385:         \<^rule_thm>\<open>real_mult_minus1_sym\<close> (*"\<not>(z is_num) ==> - (z::real) = -1 * z"*)],
walther@60341: 	    scr = Rule.Empty_Prog};
walther@60320: 
neuper@37950: val expand_poly_ = 
walther@59851:   Rule_Def.Repeat{id = "expand_poly_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60318:       erls = powers_erls, srls = Rule_Set.Empty,
neuper@42451:       calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow4\<close>, (*"(a + b) \<up> 4 = ... "*)
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow5\<close>, (*"(a + b) \<up> 5 = ... "*)
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow3\<close>, (*"(a + b) \<up> 3 = a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3" *)
walther@60358:       (*WN071229 changed/removed for Schaerding -----vvv*)
walther@60358:         (*\<^rule_thm>\<open>real_plus_binom_pow2\<close>,*) (*"(a + b) \<up> 2 = a \<up> 2 + 2*a*b + b \<up> 2"*)
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow2\<close>, (*"(a + b) \<up> 2 = (a + b) * (a + b)"*)
walther@60358:         (*\<^rule_thm>\<open>real_plus_minus_binom1_p_p\<close>,*) (*"(a + b)*(a + -1 * b) = a \<up> 2 + -1*b \<up> 2"*)
walther@60358:         (*\<^rule_thm>\<open>real_plus_minus_binom2_p_p\<close>,*) (*"(a + -1 * b)*(a + b) = a \<up> 2 + -1*b \<up> 2"*)
walther@60358:       (*WN071229 changed/removed for Schaerding -----^^^*)
walther@60358: 
walther@60358:         \<^rule_thm>\<open>distrib_right\<close>, (*"(z1.0 + z2.0) * w = z1.0 * w + z2.0 * w"*)
walther@60358:         \<^rule_thm>\<open>distrib_left\<close>, (*"w * (z1.0 + z2.0) = w * z1.0 + w * z2.0"*)
walther@60358: 
walther@60358:         \<^rule_thm>\<open>realpow_multI\<close>, (*"(r * s) \<up> n = r \<up> n * s \<up> n"*)
walther@60358:         \<^rule_thm>\<open>realpow_pow\<close>, (*"(a \<up> b) \<up> c = a \<up> (b * c)"*)
walther@60358: 
walther@60358:         \<^rule_thm>\<open>realpow_minus_even\<close>, (*"n is_even ==> (- r) \<up> n = r \<up> n"*)
walther@60358:         \<^rule_thm>\<open>realpow_minus_odd\<close> (*"Not (n is_even) ==> (- r) \<up> n = -1 * r \<up> n"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val expand_poly_rat_ = 
walther@59851:   Rule_Def.Repeat{id = "expand_poly_rat_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60358:       erls =  Rule_Set.append_rules "Rule_Set.empty-expand_poly_rat_" Rule_Set.empty [
walther@60358:         \<^rule_eval>\<open>is_polyexp\<close> (eval_is_polyexp ""),
walther@60358:         \<^rule_eval>\<open>is_even\<close> (Prog_Expr.eval_is_even "#is_even_"),
walther@60358:         \<^rule_thm>\<open>not_false\<close>,
walther@60358:         \<^rule_thm>\<open>not_true\<close> ],
walther@59851:       srls = Rule_Set.Empty,
neuper@42451:       calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow4_poly\<close>, (*"[| a is_polyexp; b is_polyexp |] ==> (a + b) \<up> 4 = ... "*)
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow5_poly\<close>, (*"[| a is_polyexp; b is_polyexp |] ==> (a + b) \<up> 5 = ... "*)
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow2_poly\<close>, (*"[| a is_polyexp; b is_polyexp |] ==> (a + b) \<up> 2 = a \<up> 2 + 2*a*b + b \<up> 2"*)
walther@60358:       	 \<^rule_thm>\<open>real_plus_binom_pow3_poly\<close>,
walther@60358:       	   (*"[| a is_polyexp; b is_polyexp |] ==> (a + b) \<up> 3 = a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3" *)
walther@60358:       	 \<^rule_thm>\<open>real_plus_minus_binom1_p_p\<close>, (*"(a + b)*(a + -1 * b) = a \<up> 2 + -1*b \<up> 2"*)
walther@60358:       	 \<^rule_thm>\<open>real_plus_minus_binom2_p_p\<close>, (*"(a + -1 * b)*(a + b) = a \<up> 2 + -1*b \<up> 2"*)
walther@60358:       	      
walther@60358:       	 \<^rule_thm>\<open>real_add_mult_distrib_poly\<close>, (*"w is_polyexp ==> (z1.0 + z2.0) * w = z1.0 * w + z2.0 * w"*)
walther@60358:       	 \<^rule_thm>\<open>real_add_mult_distrib2_poly\<close>, (*"w is_polyexp ==> w * (z1.0 + z2.0) = w * z1.0 + w * z2.0"*)
walther@60358:       	       
walther@60358:       	 \<^rule_thm>\<open>realpow_multI_poly\<close>, (*"[| r is_polyexp; s is_polyexp |] ==> (r * s) \<up> n = r \<up> n * s \<up> n"*)
walther@60358:       	 \<^rule_thm>\<open>realpow_pow\<close>, (*"(a \<up> b) \<up> c = a \<up> (b * c)"*)
walther@60358:       	 \<^rule_thm>\<open>realpow_minus_even\<close>, (*"n is_even ==> (- r) \<up> n = r \<up> n"*)
walther@60358:      	   \<^rule_thm>\<open>realpow_minus_odd\<close> (*"\<not> (n is_even) ==> (- r) \<up> n = -1 * r \<up> n"*) ],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val simplify_power_ = 
walther@59851:   Rule_Def.Repeat{id = "simplify_power_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852:       erls = Rule_Set.empty, srls = Rule_Set.Empty,
neuper@42451:       calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:          (*MG: Reihenfolge der folgenden 2 Rule.Thm muss so bleiben, wegen
walther@60358: 	        	a*(a*a) --> a*a \<up> 2 und nicht a*(a*a) --> a \<up> 2*a *)
walther@60358:         \<^rule_thm_sym>\<open>realpow_twoI\<close>, (*"r * r = r \<up> 2"*)
walther@60358:         \<^rule_thm>\<open>realpow_twoI_assoc_l\<close>, (*"r * (r * s) = r \<up> 2 * s"*)
walther@60358:         
walther@60358:         \<^rule_thm>\<open>realpow_plus_1\<close>, (*"r * r \<up> n = r \<up> (n + 1)"*)
walther@60358:         \<^rule_thm>\<open>realpow_plus_1_assoc_l\<close>, (*"r * (r \<up> m * s) = r \<up> (1 + m) * s"*)
walther@60358:         (*MG 9.7.03: neues Rule.Thm wegen a*(a*(a*b)) --> a \<up> 2*(a*b) *)
walther@60358:         \<^rule_thm>\<open>realpow_plus_1_assoc_l2\<close>, (*"r \<up> m * (r * s) = r \<up> (1 + m) * s"*)
walther@60358:         
walther@60358:         \<^rule_thm_sym>\<open>realpow_addI\<close>, (*"r \<up> n * r \<up> m = r \<up> (n + m)"*)
walther@60358:         \<^rule_thm>\<open>realpow_addI_assoc_l\<close>, (*"r \<up> n * (r \<up> m * s) = r \<up> (n + m) * s"*)
walther@60358:         
walther@60358:         (* ist in expand_poly - wird hier aber auch gebraucht, wegen: "r * r = r \<up> 2" wenn r=a \<up> b*)
walther@60358:         \<^rule_thm>\<open>realpow_pow\<close> (*"(a \<up> b) \<up> c = a \<up> (b * c)"*)], 
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val calc_add_mult_pow_ = 
walther@59851:   Rule_Def.Repeat{id = "calc_add_mult_pow_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59851:       erls = Atools_erls(*erls3.4.03*),srls = Rule_Set.Empty,
wenzelm@60309:       calc = [("PLUS"  , (\<^const_name>\<open>plus\<close>, eval_binop "#add_")), 
wenzelm@60309: 	      ("TIMES" , (\<^const_name>\<open>times\<close>, eval_binop "#mult_")),
wenzelm@60405: 	      ("POWER", (\<^const_name>\<open>realpow\<close>, eval_binop "#power_"))
neuper@37950: 	      ],
neuper@42451:       errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"),
walther@60358: 	      \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405: 	      \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_")],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val reduce_012_mult_ = 
walther@59851:   Rule_Def.Repeat{id = "reduce_012_mult_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852:       erls = Rule_Set.empty,srls = Rule_Set.Empty,
neuper@42451:       calc = [], errpatts = [],
wneuper@59416:       rules = [(* MG: folgende Rule.Thm müssen hier stehen bleiben: *)
walther@60358:          \<^rule_thm>\<open>mult_1_right\<close>, (*"z * 1 = z"*) (*wegen "a * b * b \<up> (-1) + a"*) 
walther@60358: 	       \<^rule_thm>\<open>realpow_zeroI\<close>, (*"r \<up> 0 = 1"*) (*wegen "a*a \<up> (-1)*c + b + c"*)
walther@60358: 	       \<^rule_thm>\<open>realpow_oneI\<close>, (*"r \<up> 1 = r"*)
walther@60358: 	       \<^rule_thm>\<open>realpow_eq_oneI\<close> (*"1 \<up> n = 1"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val collect_numerals_ = 
walther@59851:   Rule_Def.Repeat{id = "collect_numerals_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59851:       erls = Atools_erls, srls = Rule_Set.Empty,
wenzelm@60309:       calc = [("PLUS"  , (\<^const_name>\<open>plus\<close>, eval_binop "#add_"))
neuper@42451: 	      ], errpatts = [],
walther@60358:       rules = [
walther@60385:         \<^rule_thm>\<open>real_num_collect\<close>, (*"[| l is_num; m is_num |]==>l * n + m * n = (l + m) * n"*)
walther@60358: 	      \<^rule_thm>\<open>real_num_collect_assoc_r\<close>,
walther@60385: 	        (*"[| l is_num; m is_num |] ==> (k + m * n) + l * n = k + (l + m)*n"*)
walther@60385:         \<^rule_thm>\<open>real_one_collect\<close>, (*"m is_num ==> n + m * n = (1 + m) * n"*)
walther@60385:         \<^rule_thm>\<open>real_one_collect_assoc_r\<close>, (*"m is_num ==> (k + n) + m * n = k + (m + 1) * n"*)
neuper@37950: 
walther@60358:         \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"),
neuper@37950: 
walther@60358:       	 (*MG: Reihenfolge der folgenden 2 Rule.Thm muss so bleiben, wegen
walther@60358: 		       (a+a)+a --> a + 2*a --> 3*a and not (a+a)+a --> 2*a + a *)
walther@60358:         \<^rule_thm>\<open>real_mult_2_assoc_r\<close>, (*"(k + z1) + z1 = k + 2 * z1"*)
walther@60358:       	 \<^rule_thm_sym>\<open>real_mult_2\<close> (*"z1 + z1 = 2 * z1"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val reduce_012_ = 
walther@59851:   Rule_Def.Repeat{id = "reduce_012_", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852:       erls = Rule_Set.empty,srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>mult_1_left\<close>, (*"1 * z = z"*)
walther@60358: 	      \<^rule_thm>\<open>mult_zero_left\<close>, (*"0 * z = 0"*)
walther@60358: 	      \<^rule_thm>\<open>mult_zero_right\<close>, (*"z * 0 = 0"*)
walther@60358: 	      \<^rule_thm>\<open>add_0_left\<close>, (*"0 + z = z"*)
walther@60358: 	      \<^rule_thm>\<open>add_0_right\<close>, (*"z + 0 = z"*) (*wegen a+b-b --> a+(1-1)*b --> a+0 --> a*)
walther@60358:    
walther@60358: 	      (*\<^rule_thm>\<open>realpow_oneI\<close>*) (*"?r \<up> 1 = ?r"*)
walther@60358: 	      \<^rule_thm>\<open>division_ring_divide_zero\<close> (*"0 / ?x = 0"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37979: val discard_parentheses1 = 
walther@60358:     Rule_Set.append_rules "discard_parentheses1" Rule_Set.empty [
walther@60358:       \<^rule_thm_sym>\<open>mult.assoc\<close> (*"?z1.1 * (?z2.1 * ?z3.1) = ?z1.1 * ?z2.1 * ?z3.1"*)
walther@60358: 		   (*\<^rule_thm_sym>\<open>add.assoc\<close>*) (*"?z1.1 + (?z2.1 + ?z3.1) = ?z1.1 + ?z2.1 + ?z3.1"*)];
neuper@37950: 
wneuper@59523: val expand_poly =
walther@59851:   Rule_Def.Repeat{id = "expand_poly", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60320:       erls = powers_erls, srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>distrib_right\<close>, (*"(z1.0 + z2.0) * w = z1.0 * w + z2.0 * w"*)
walther@60358:         \<^rule_thm>\<open>distrib_left\<close>, (*"w * (z1.0 + z2.0) = w * z1.0 + w * z2.0"*)
neuper@37950: 
walther@60358:         \<^rule_thm>\<open>real_plus_binom_pow2\<close>, (*"(a + b) \<up> 2 = a \<up> 2 + 2*a*b + b \<up> 2"*)
walther@60358:         \<^rule_thm>\<open>real_minus_binom_pow2_p\<close>, (*"(a - b) \<up> 2 = a \<up> 2 + -2*a*b + b \<up> 2"*)
walther@60358:         \<^rule_thm>\<open>real_plus_minus_binom1_p\<close>, (*"(a + b)*(a - b) = a \<up> 2 + -1*b \<up> 2"*)
walther@60358:         \<^rule_thm>\<open>real_plus_minus_binom2_p\<close>, (*"(a - b)*(a + b) = a \<up> 2 + -1*b \<up> 2"*)
neuper@37950: 
walther@60358:         \<^rule_thm>\<open>minus_minus\<close> (*"- (- ?z) = ?z"*),
walther@60358:         \<^rule_thm>\<open>real_diff_minus\<close> (*"a - b = a + -1 * b"*),
walther@60385:         \<^rule_thm>\<open>real_mult_minus1_sym\<close> (*"\<not>(z is_num) ==> - (z::real) = -1 * z"*)
neuper@37950: 
walther@60358: 	       (*\<^rule_thm>\<open>real_minus_add_distrib\<close>,*) (*"- (?x + ?y) = - ?x + - ?y"*)
walther@60358: 	       (*\<^rule_thm>\<open>real_diff_plus\<close>*) (*"a - b = a + -b"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: 
neuper@37950: val simplify_power = 
walther@59851:   Rule_Def.Repeat{id = "simplify_power", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852:       erls = Rule_Set.empty, srls = Rule_Set.Empty,
neuper@42451:       calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>realpow_multI\<close>, (*"(r * s) \<up> n = r \<up> n * s \<up> n"*)
walther@60358: 
walther@60358:         \<^rule_thm_sym>\<open>realpow_twoI\<close>, (*"r1 * r1 = r1 \<up> 2"*)
walther@60358:         \<^rule_thm>\<open>realpow_plus_1\<close>, (*"r * r \<up> n = r \<up> (n + 1)"*)
walther@60358:         \<^rule_thm>\<open>realpow_pow\<close>, (*"(a \<up> b) \<up> c = a \<up> (b * c)"*)
walther@60358:         \<^rule_thm_sym>\<open>realpow_addI\<close>, (*"r \<up> n * r \<up> m = r \<up> (n + m)"*)
walther@60358:         \<^rule_thm>\<open>realpow_oneI\<close>, (*"r \<up> 1 = r"*)
walther@60358:         \<^rule_thm>\<open>realpow_eq_oneI\<close> (*"1 \<up> n = 1"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@42451: 
neuper@37950: val collect_numerals = 
walther@59851:   Rule_Def.Repeat{id = "collect_numerals", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59851:       erls = Atools_erls(*erls3.4.03*),srls = Rule_Set.Empty,
wenzelm@60309:       calc = [("PLUS"  , (\<^const_name>\<open>plus\<close>, eval_binop "#add_")), 
wenzelm@60309: 	      ("TIMES" , (\<^const_name>\<open>times\<close>, eval_binop "#mult_")),
wenzelm@60405: 	      ("POWER", (\<^const_name>\<open>realpow\<close>, eval_binop "#power_"))
neuper@42451: 	      ], errpatts = [],
walther@60358:       rules =[
walther@60385:         \<^rule_thm>\<open>real_num_collect\<close>, (*"[| l is_num; m is_num |]==>l * n + m * n = (l + m) * n"*)
walther@60358: 	      \<^rule_thm>\<open>real_num_collect_assoc\<close>,
walther@60385:           (*"[| l is_num; m is_num |] ==> l * n + (m * n + k) =  (l + m) * n + k"*)
walther@60385: 	      \<^rule_thm>\<open>real_one_collect\<close>,	 (*"m is_num ==> n + m * n = (1 + m) * n"*)
walther@60385: 	      \<^rule_thm>\<open>real_one_collect_assoc\<close>, (*"m is_num ==> k + (n + m * n) = k + (1 + m) * n"*)
walther@60358: 	      \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"), 
walther@60358: 	      \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405: 	      \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_")],
walther@60358:       scr = Rule.Empty_Prog};
neuper@37950: val reduce_012 = 
walther@59851:   Rule_Def.Repeat{id = "reduce_012", preconds = [], 
Walther@60509:       rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60344:       erls = Rule_Set.append_rules "erls_in_reduce_012" Rule_Set.empty [
walther@60344:         \<^rule_eval>\<open>is_num\<close> (Prog_Expr.eval_is_num "#is_num_"),
walther@60344:         \<^rule_thm>\<open>not_false\<close>,
walther@60344:         \<^rule_thm>\<open>not_true\<close>],
walther@60344:       srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>mult_1_left\<close>, (*"1 * z = z"*)
walther@60358: 	       (*\<^rule_thm>\<open>real_mult_minus1\<close>,14.3.03*) (*"-1 * z = - z"*)
walther@60344: 	       \<^rule_thm>\<open>real_minus_mult_left\<close>, (*"\<not> ((a::real) is_num) ==> (- a) * b = - (a * b)"*)
walther@60358: 	       (*\<^rule_thm>\<open>real_minus_mult_cancel\<close>, (*"- ?x * - ?y = ?x * ?y"*)---*)
walther@60358: 	       \<^rule_thm>\<open>mult_zero_left\<close>, (*"0 * z = 0"*)
walther@60344: 	       \<^rule_thm>\<open>add_0_left\<close>, (*"0 + z = z"*)
walther@60344: 	       \<^rule_thm>\<open>add_0_right\<close>, (*"a + - a = 0"*)
walther@60358: 	       \<^rule_thm>\<open>right_minus\<close>, (*"?z + - ?z = 0"*)
walther@60358: 	       \<^rule_thm_sym>\<open>real_mult_2\<close>,	 (*"z1 + z1 = 2 * z1"*)
walther@60358: 	       \<^rule_thm>\<open>real_mult_2_assoc\<close> (*"z1 + (z1 + k) = 2 * z1 + k"*)],
walther@60358:       scr = Rule.Empty_Prog};
neuper@52139: 
neuper@37950: val discard_parentheses = 
walther@59852:     Rule_Set.append_rules "discard_parentheses" Rule_Set.empty 
wenzelm@60296: 	       [\<^rule_thm_sym>\<open>mult.assoc\<close>,	\<^rule_thm_sym>\<open>add.assoc\<close>];
wneuper@59523: \<close>
neuper@37950: 
wneuper@59523: subsubsection \<open>hard-coded AC rewriting\<close>
wneuper@59523: ML \<open>
wneuper@59523: (*MG.0401: termorders for multivariate polys dropped due to principal problems:
wneuper@59523:   (total-degree-)ordering of monoms NOT possible with size_of_term GIVEN*)
wneuper@59523: val order_add_mult = 
walther@59851:   Rule_Def.Repeat{id = "order_add_mult", preconds = [], 
Walther@60509:       rew_ord = ("ord_make_polynomial", ord_make_polynomial false \<^theory>),
walther@59852:       erls = Rule_Set.empty,srls = Rule_Set.Empty,
neuper@42451:       calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>mult.commute\<close>, (* z * w = w * z *)
walther@60358: 	       \<^rule_thm>\<open>real_mult_left_commute\<close>, (*z1.0 * (z2.0 * z3.0) = z2.0 * (z1.0 * z3.0)*)
walther@60358: 	       \<^rule_thm>\<open>mult.assoc\<close>, (*z1.0 * z2.0 * z3.0 = z1.0 * (z2.0 * z3.0)*)
walther@60358: 	       \<^rule_thm>\<open>add.commute\<close>,	 (*z + w = w + z*)
walther@60358: 	       \<^rule_thm>\<open>add.left_commute\<close>, (*x + (y + z) = y + (x + z)*)
walther@60358: 	       \<^rule_thm>\<open>add.assoc\<close> (*z1.0 + z2.0 + z3.0 = z1.0 + (z2.0 + z3.0)*)],
walther@60358:       scr = Rule.Empty_Prog};
wneuper@59523: (*MG.0401: termorders for multivariate polys dropped due to principal problems:
wneuper@59523:   (total-degree-)ordering of monoms NOT possible with size_of_term GIVEN*)
wneuper@59523: val order_mult = 
walther@59851:   Rule_Def.Repeat{id = "order_mult", preconds = [], 
wenzelm@60291:       rew_ord = ("ord_make_polynomial",ord_make_polynomial false \<^theory>),
walther@59852:       erls = Rule_Set.empty,srls = Rule_Set.Empty,
wneuper@59523:       calc = [], errpatts = [],
walther@60358:       rules = [
walther@60358:         \<^rule_thm>\<open>mult.commute\<close>, (* z * w = w * z *)
walther@60358: 	       \<^rule_thm>\<open>real_mult_left_commute\<close>, (*z1.0 * (z2.0 * z3.0) = z2.0 * (z1.0 * z3.0)*)
walther@60358: 	       \<^rule_thm>\<open>mult.assoc\<close>	 (*z1.0 * z2.0 * z3.0 = z1.0 * (z2.0 * z3.0)*)],
walther@60358:       scr = Rule.Empty_Prog};
wneuper@59472: \<close>
wneuper@59472: ML \<open>
wneuper@59416: fun attach_form (_: Rule.rule list list) (_: term) (_: term) = (*still missing*)
wneuper@59416:     []:(Rule.rule * (term * term list)) list;
walther@59850: fun init_state (_: term) = Rule_Set.e_rrlsstate;
wneuper@59416: fun locate_rule (_: Rule.rule list list) (_: term) (_: Rule.rule) =
wneuper@59416:     ([]:(Rule.rule * (term * term list)) list);
wneuper@59416: fun next_rule (_: Rule.rule list list) (_: term) = (NONE: Rule.rule option);
wneuper@59406: fun normal_form t = SOME (sort_variables t, []: term list);
neuper@37950: 
neuper@37950: val order_mult_ =
walther@59850:     Rule_Set.Rrls {id = "order_mult_", 
neuper@37950: 	  prepat = 
neuper@38036:           (* ?p matched with the current term gives an environment,
neuper@38037:              which evaluates (the instantiated) "?p is_multUnordered" to true *)
wenzelm@60291: 	  [([TermC.parse_patt \<^theory> "?p is_multUnordered"], 
wenzelm@60291:              TermC.parse_patt \<^theory> "?p :: real")],
Walther@60509: 	  rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852: 	  erls = Rule_Set.append_rules "Rule_Set.empty-is_multUnordered" Rule_Set.empty
wenzelm@60294: 			    [\<^rule_eval>\<open>is_multUnordered\<close> (eval_is_multUnordered "")],
wenzelm@60309: 	  calc = [("PLUS"  , (\<^const_name>\<open>plus\<close>, eval_binop "#add_")),
wenzelm@60309: 		  ("TIMES" , (\<^const_name>\<open>times\<close>, eval_binop "#mult_")),
wenzelm@60309: 		  ("DIVIDE", (\<^const_name>\<open>divide\<close>, Prog_Expr.eval_cancel "#divide_e")),
wenzelm@60405: 		  ("POWER" , (\<^const_name>\<open>realpow\<close>, eval_binop "#power_"))],
wneuper@59406:     errpatts = [],
wneuper@59416: 	  scr = Rule.Rfuns {init_state  = init_state,
neuper@37950: 		     normal_form = normal_form,
neuper@37950: 		     locate_rule = locate_rule,
neuper@37950: 		     next_rule   = next_rule,
neuper@37950: 		     attach_form = attach_form}};
neuper@37950: val order_mult_rls_ = 
walther@59851:   Rule_Def.Repeat {id = "order_mult_rls_", preconds = [], 
Walther@60509:     rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60358:     erls = Rule_Set.empty,srls = Rule_Set.Empty,
walther@60358:     calc = [], errpatts = [],
walther@60358:     rules = [
walther@60358:       Rule.Rls_ order_mult_],
walther@60358:     scr = Rule.Empty_Prog};
neuper@37950: 
wneuper@59523: \<close> ML \<open>
neuper@37950: 
wneuper@59416: fun attach_form (_: Rule.rule list list) (_: term) (_: term) = (*still missing*)
wneuper@59416:     []: (Rule.rule * (term * term list)) list;
walther@59850: fun init_state (_: term) = Rule_Set.e_rrlsstate;
wneuper@59416: fun locate_rule (_: Rule.rule list list) (_: term) (_: Rule.rule) =
wneuper@59416:     ([]: (Rule.rule * (term * term list)) list);
wneuper@59416: fun next_rule (_: Rule.rule list list) (_: term) = (NONE: Rule.rule option);
wneuper@59406: fun normal_form t = SOME (sort_monoms t,[]: term list);
wneuper@59472: \<close> ML \<open>
neuper@37950: val order_add_ =
walther@60358:   Rule_Set.Rrls {id = "order_add_", 
walther@60358: 	  prepat = [(*WN.18.6.03 Preconditions und Pattern,
walther@59850: 		    die beide passen muessen, damit das Rule_Set.Rrls angewandt wird*)
walther@60358: 	    ([TermC.parse_patt @{theory} "?p is_addUnordered"], 
walther@60358: 	      TermC.parse_patt @{theory} "?p :: real" 
neuper@37950: 	    (*WN.18.6.03 also KEIN pattern, dieses erzeugt nur das Environment 
neuper@37950: 	      fuer die Evaluation der Precondition "p is_addUnordered"*))],
Walther@60509: 	  rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@59852: 	  erls = Rule_Set.append_rules "Rule_Set.empty-is_addUnordered" Rule_Set.empty(*MG: poly_erls*)
walther@60358: 			[\<^rule_eval>\<open>is_addUnordered\<close> (eval_is_addUnordered "")],
walther@60358: 	  calc = [
walther@60358:       ("PLUS"  ,(\<^const_name>\<open>plus\<close>, eval_binop "#add_")),
wenzelm@60309: 		  ("TIMES" ,(\<^const_name>\<open>times\<close>, eval_binop "#mult_")),
wenzelm@60309: 		  ("DIVIDE",(\<^const_name>\<open>divide\<close>, Prog_Expr.eval_cancel "#divide_e")),
wenzelm@60405: 		  ("POWER" ,(\<^const_name>\<open>realpow\<close>  , eval_binop "#power_"))],
neuper@42451: 	  errpatts = [],
walther@60358: 	  scr = Rule.Rfuns {
walther@60358:       init_state  = init_state,
walther@60358: 		  normal_form = normal_form,
walther@60358: 		  locate_rule = locate_rule,
walther@60358: 		  next_rule   = next_rule,
walther@60358: 		  attach_form = attach_form}};
neuper@37950: 
wneuper@59406: val order_add_rls_ =
walther@59851:   Rule_Def.Repeat {id = "order_add_rls_", preconds = [], 
Walther@60509:     rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60358:     erls = Rule_Set.empty, srls = Rule_Set.Empty,
walther@60358:     calc = [], errpatts = [],
walther@60358:     rules = [
walther@60358:       Rule.Rls_ order_add_],
walther@60358:     scr = Rule.Empty_Prog};
wneuper@59472: \<close>
neuper@37950: 
wneuper@59472: text \<open>rule-set make_polynomial also named norm_Poly:
neuper@42398:   Rewrite order has not been implemented properly; the order is better in 
neuper@42398:   make_polynomial_in (coded in SML).
neuper@42398:   Notes on state of development:
neuper@42398:   \# surprise 2006: test --- norm_Poly NOT COMPLETE ---
neuper@42398:   \# migration Isabelle2002 --> 2011 weakened the rule set, see test
walther@59962:   --- Matthias Goldgruber 2003 rewrite orders ---, raise ERROR "ord_make_polynomial_in #16b"
wneuper@59472: \<close>
wneuper@59472: ML \<open>
neuper@37950: (*. see MG-DA.p.52ff .*)
neuper@37950: val make_polynomial(*MG.03, overwrites version from above, 
neuper@37950:     previously 'make_polynomial_'*) =
walther@59878:   Rule_Set.Sequence {id = "make_polynomial", preconds = []:term list, 
Walther@60509:     rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60358:     erls = Atools_erls, srls = Rule_Set.Empty,calc = [], errpatts = [],
walther@60358:     rules = [
walther@60358:        Rule.Rls_ discard_minus,
walther@60358: 	     Rule.Rls_ expand_poly_,
walther@60358: 	     \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
walther@60358: 	     Rule.Rls_ order_mult_rls_,
walther@60358: 	     Rule.Rls_ simplify_power_, 
walther@60358: 	     Rule.Rls_ calc_add_mult_pow_, 
walther@60358: 	     Rule.Rls_ reduce_012_mult_,
walther@60358: 	     Rule.Rls_ order_add_rls_,
walther@60358: 	     Rule.Rls_ collect_numerals_, 
walther@60358: 	     Rule.Rls_ reduce_012_,
walther@60358: 	     Rule.Rls_ discard_parentheses1],
walther@60358:     scr = Rule.Empty_Prog};
wneuper@59472: \<close>
wneuper@59472: ML \<open>
neuper@37950: val norm_Poly(*=make_polynomial*) = 
walther@59878:   Rule_Set.Sequence {id = "norm_Poly", preconds = []:term list, 
Walther@60509:     rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60358:     erls = Atools_erls, srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:     rules = [
walther@60358:        Rule.Rls_ discard_minus,
walther@60358: 	     Rule.Rls_ expand_poly_,
walther@60358: 	     \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
walther@60358: 	     Rule.Rls_ order_mult_rls_,
walther@60358: 	     Rule.Rls_ simplify_power_, 
walther@60358: 	     Rule.Rls_ calc_add_mult_pow_, 
walther@60358: 	     Rule.Rls_ reduce_012_mult_,
walther@60358: 	     Rule.Rls_ order_add_rls_,
walther@60358: 	     Rule.Rls_ collect_numerals_, 
walther@60358: 	     Rule.Rls_ reduce_012_,
walther@60358: 	     Rule.Rls_ discard_parentheses1],
walther@60358:     scr = Rule.Empty_Prog};
wneuper@59472: \<close>
wneuper@59472: ML \<open>
wneuper@59416: (* MG:03 Like make_polynomial_ but without Rule.Rls_ discard_parentheses1 
neuper@37950:    and expand_poly_rat_ instead of expand_poly_, see MG-DA.p.56ff*)
neuper@37950: (* MG necessary  for termination of norm_Rational(*_mg*) in Rational.ML*)
neuper@37950: val make_rat_poly_with_parentheses =
walther@59878:   Rule_Set.Sequence{id = "make_rat_poly_with_parentheses", preconds = []:term list, 
Walther@60509:     rew_ord = ("dummy_ord", Rewrite_Ord.function_empty),
walther@60358:     erls = Atools_erls, srls = Rule_Set.Empty, calc = [], errpatts = [],
walther@60358:     rules = [
walther@60358:       Rule.Rls_ discard_minus,
walther@60358: 	    Rule.Rls_ expand_poly_rat_,(*ignors rationals*)
walther@60358: 	    \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
walther@60358: 	    Rule.Rls_ order_mult_rls_,
walther@60358: 	    Rule.Rls_ simplify_power_, 
walther@60358: 	    Rule.Rls_ calc_add_mult_pow_, 
walther@60358: 	    Rule.Rls_ reduce_012_mult_,
walther@60358: 	    Rule.Rls_ order_add_rls_,
walther@60358: 	    Rule.Rls_ collect_numerals_, 
walther@60358: 	    Rule.Rls_ reduce_012_
walther@60358: 	    (*Rule.Rls_ discard_parentheses1 *)],
walther@60358:     scr = Rule.Empty_Prog};
wneuper@59472: \<close>
wneuper@59472: ML \<open>
neuper@37950: (*.a minimal ruleset for reverse rewriting of factions [2];
neuper@37950:    compare expand_binoms.*)
neuper@37950: val rev_rew_p = 
walther@60358:   Rule_Set.Sequence{id = "rev_rew_p", preconds = [], rew_ord = ("termlessI",termlessI),
walther@59851:     erls = Atools_erls, srls = Rule_Set.Empty,
wenzelm@60309:     calc = [(*("PLUS"  , (\<^const_name>\<open>plus\<close>, eval_binop "#add_")), 
wenzelm@60309: 	    ("TIMES" , (\<^const_name>\<open>times\<close>, eval_binop "#mult_")),
wenzelm@60405: 	    ("POWER", (\<^const_name>\<open>realpow\<close>, eval_binop "#power_"))*)
neuper@42451: 	    ], errpatts = [],
walther@60358:     rules = [
walther@60358:        \<^rule_thm>\<open>real_plus_binom_times\<close>, (*"(a + b)*(a + b) = a ^ 2 + 2 * a * b + b ^ 2*)
walther@60358: 	     \<^rule_thm>\<open>real_plus_binom_times1\<close>, (*"(a +  1*b)*(a + -1*b) = a \<up> 2 + -1*b \<up> 2"*)
walther@60358: 	     \<^rule_thm>\<open>real_plus_binom_times2\<close>, (*"(a + -1*b)*(a +  1*b) = a \<up> 2 + -1*b \<up> 2"*)
neuper@37950: 
wenzelm@60297: 	     \<^rule_thm>\<open>mult_1_left\<close>,(*"1 * z = z"*)
neuper@37950: 
walther@60358:        \<^rule_thm>\<open>distrib_right\<close>, (*"(z1.0 + z2.0) * w = z1.0 * w + z2.0 * w"*)
walther@60358: 	     \<^rule_thm>\<open>distrib_left\<close>, (*"w * (z1.0 + z2.0) = w * z1.0 + w * z2.0"*)
neuper@37950: 	       
walther@60358: 	     \<^rule_thm>\<open>mult.assoc\<close>, (*"?z1.1 * ?z2.1 * ?z3. =1 ?z1.1 * (?z2.1 * ?z3.1)"*)
wneuper@59416: 	     Rule.Rls_ order_mult_rls_,
wneuper@59416: 	     (*Rule.Rls_ order_add_rls_,*)
neuper@37950: 
wenzelm@60294: 	     \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"), 
wenzelm@60294: 	     \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405: 	     \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_"),
neuper@37950: 	     
walther@60358: 	     \<^rule_thm_sym>\<open>realpow_twoI\<close>, (*"r1 * r1 = r1 \<up> 2"*)
walther@60358: 	     \<^rule_thm_sym>\<open>real_mult_2\<close>, (*"z1 + z1 = 2 * z1"*)
walther@60358: 	     \<^rule_thm>\<open>real_mult_2_assoc\<close>, (*"z1 + (z1 + k) = 2 * z1 + k"*)
neuper@37950: 
walther@60385: 	     \<^rule_thm>\<open>real_num_collect\<close>,  (*"[| l is_num; m is_num |]==>l * n + m * n = (l + m) * n"*)
walther@60385: 	     \<^rule_thm>\<open>real_num_collect_assoc\<close>, (*"[| l is_num; m is_num |] ==> l * n + (m * n + k) =  (l + m) * n + k"*)
walther@60385: 	     \<^rule_thm>\<open>real_one_collect\<close>, (*"m is_num ==> n + m * n = (1 + m) * n"*)
walther@60385: 	     \<^rule_thm>\<open>real_one_collect_assoc\<close>, (*"m is_num ==> k + (n + m * n) = k + (1 + m) * n"*)
neuper@37950: 
walther@60358: 	     \<^rule_thm>\<open>realpow_multI\<close>, (*"(r * s) \<up> n = r \<up> n * s \<up> n"*)
neuper@37950: 
wenzelm@60294: 	     \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"),
wenzelm@60294: 	     \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405: 	     \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_"),
neuper@37950: 
walther@60358: 	     \<^rule_thm>\<open>mult_1_left\<close>, (*"1 * z = z"*)
walther@60358: 	     \<^rule_thm>\<open>mult_zero_left\<close>, (*"0 * z = 0"*)
walther@60358: 	     \<^rule_thm>\<open>add_0_left\<close> (*0 + z = z*)
neuper@37950: 
wneuper@59416: 	     (*Rule.Rls_ order_add_rls_*)
neuper@37950: 	     ],
walther@59878:     scr = Rule.Empty_Prog};      
wneuper@59472: \<close>
neuper@52125: 
wneuper@59523: subsection \<open>rule-sets with explicit program for intermediate steps\<close>
wneuper@59523: partial_function (tailrec) expand_binoms_2 :: "real \<Rightarrow> real"
wneuper@59523:   where
walther@59635: "expand_binoms_2 term = (
walther@59635:   Repeat (
walther@59637:     (Try (Repeat (Rewrite ''real_plus_binom_pow2''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_plus_binom_times''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_minus_binom_pow2''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_minus_binom_times''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_plus_minus_binom1''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_plus_minus_binom2''))) #>
walther@59635:    
walther@59637:     (Try (Repeat (Rewrite ''mult_1_left''))) #>
walther@59637:     (Try (Repeat (Rewrite ''mult_zero_left''))) #>
walther@59637:     (Try (Repeat (Rewrite ''add_0_left''))) #>
walther@59635:    
walther@59637:     (Try (Repeat (Calculate ''PLUS''))) #>
walther@59637:     (Try (Repeat (Calculate ''TIMES''))) #>
walther@59637:     (Try (Repeat (Calculate ''POWER''))) #>
walther@59635:    
walther@59637:     (Try (Repeat (Rewrite ''sym_realpow_twoI''))) #>
walther@59637:     (Try (Repeat (Rewrite ''realpow_plus_1''))) #>
walther@59637:     (Try (Repeat (Rewrite ''sym_real_mult_2''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_mult_2_assoc''))) #>
walther@59635:    
walther@59637:     (Try (Repeat (Rewrite ''real_num_collect''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_num_collect_assoc''))) #>
walther@59635:    
walther@59637:     (Try (Repeat (Rewrite ''real_one_collect''))) #>
walther@59637:     (Try (Repeat (Rewrite ''real_one_collect_assoc''))) #>
walther@59635:    
walther@59637:     (Try (Repeat (Calculate ''PLUS''))) #>
walther@59637:     (Try (Repeat (Calculate ''TIMES''))) #>
walther@59635:     (Try (Repeat (Calculate ''POWER''))))
walther@59635:   term)"
wneuper@59523: ML \<open>
wneuper@59523: val expand_binoms = 
walther@59851:   Rule_Def.Repeat{id = "expand_binoms", preconds = [], rew_ord = ("termlessI",termlessI),
walther@60358:     erls = Atools_erls, srls = Rule_Set.Empty,
walther@60358:     calc = [("PLUS"  , (\<^const_name>\<open>plus\<close>, eval_binop "#add_")), 
walther@60358: 	    ("TIMES" , (\<^const_name>\<open>times\<close>, eval_binop "#mult_")),
wenzelm@60405: 	    ("POWER", (\<^const_name>\<open>realpow\<close>, eval_binop "#power_"))
walther@60358: 	    ], errpatts = [],
walther@60358:     rules = [
walther@60358:        \<^rule_thm>\<open>real_plus_binom_pow2\<close>, (*"(a + b) \<up> 2 = a \<up> 2 + 2 * a * b + b \<up> 2"*)
walther@60358: 	     \<^rule_thm>\<open>real_plus_binom_times\<close>, (*"(a + b)*(a + b) = ...*)
walther@60358: 	     \<^rule_thm>\<open>real_minus_binom_pow2\<close>,  (*"(a - b) \<up> 2 = a \<up> 2 - 2 * a * b + b \<up> 2"*)
walther@60358: 	     \<^rule_thm>\<open>real_minus_binom_times\<close>, (*"(a - b)*(a - b) = ...*)
walther@60358: 	     \<^rule_thm>\<open>real_plus_minus_binom1\<close>, (*"(a + b) * (a - b) = a \<up> 2 - b \<up> 2"*)
walther@60358: 	     \<^rule_thm>\<open>real_plus_minus_binom2\<close>, (*"(a - b) * (a + b) = a \<up> 2 - b \<up> 2"*)
walther@60358: 	     (*RL 020915*)
walther@60358: 	     \<^rule_thm>\<open>real_pp_binom_times\<close>, (*(a + b)*(c + d) = a*c + a*d + b*c + b*d*)
walther@60384: 	     \<^rule_thm>\<open>real_pm_binom_times\<close>, (*(a + b)*(c - d) = a*c - a*d + b*c - b*d*)
walther@60384: 	     \<^rule_thm>\<open>real_mp_binom_times\<close>, (*(a - b)*(c + d) = a*c + a*d - b*c - b*d*)
walther@60384: 	     \<^rule_thm>\<open>real_mm_binom_times\<close>, (*(a - b)*(c - d) = a*c - a*d - b*c + b*d*)
walther@60358: 	     \<^rule_thm>\<open>realpow_multI\<close>, (*(a*b) \<up> n = a \<up> n * b \<up> n*)
walther@60358: 	     \<^rule_thm>\<open>real_plus_binom_pow3\<close>, (* (a + b) \<up> 3 = a \<up> 3 + 3*a \<up> 2*b + 3*a*b \<up> 2 + b \<up> 3 *)
walther@60358: 	     \<^rule_thm>\<open>real_minus_binom_pow3\<close>, (* (a - b) \<up> 3 = a \<up> 3 - 3*a \<up> 2*b + 3*a*b \<up> 2 - b \<up> 3 *)
walther@60358:        (*
walther@60358:        \<^rule_thm>\<open>distrib_right\<close>,	 (*"(z1.0 + z2.0) * w = z1.0 * w + z2.0 * w"*)
walther@60358: 	     \<^rule_thm>\<open>distrib_left\<close>, (*"w * (z1.0 + z2.0) = w * z1.0 + w * z2.0"*)
walther@60358: 	     \<^rule_thm>\<open>left_diff_distrib\<close>,	 (*"(z1.0 - z2.0) * w = z1.0 * w - z2.0 * w"*)
walther@60358: 	     \<^rule_thm>\<open>right_diff_distrib\<close>, (*"w * (z1.0 - z2.0) = w * z1.0 - w * z2.0"*)
wneuper@59523: 	      *)
walther@60358: 	     \<^rule_thm>\<open>mult_1_left\<close>, (*"1 * z = z"*)
walther@60358: 	     \<^rule_thm>\<open>mult_zero_left\<close>, (*"0 * z = 0"*)
walther@60358: 	     \<^rule_thm>\<open>add_0_left\<close>, (*"0 + z = z"*)
walther@60358:     
walther@60358: 	     \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"), 
walther@60358: 	     \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405: 	     \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_"),
walther@60358:             (*\<^rule_thm>\<open>mult.commute\<close>,
walther@60358: 		    (*AC-rewriting*)
walther@60358: 	     \<^rule_thm>\<open>real_mult_left_commute\<close>,
walther@60358: 	     \<^rule_thm>\<open>mult.assoc\<close>,
walther@60358: 	     \<^rule_thm>\<open>add.commute\<close>,
walther@60358: 	     \<^rule_thm>\<open>add.left_commute\<close>,
walther@60358: 	     \<^rule_thm>\<open>add.assoc\<close>,
wneuper@59523: 	      *)
walther@60358: 	     \<^rule_thm_sym>\<open>realpow_twoI\<close>, (*"r1 * r1 = r1 \<up> 2"*)
walther@60358: 	     \<^rule_thm>\<open>realpow_plus_1\<close>, (*"r * r \<up> n = r \<up> (n + 1)"*)
walther@60358: 	     (*
walther@60358:        \<^rule_thm_sym>\<open>real_mult_2\<close>, (*"z1 + z1 = 2 * z1"*)*)
walther@60358: 	     \<^rule_thm>\<open>real_mult_2_assoc\<close>,	 (*"z1 + (z1 + k) = 2 * z1 + k"*)
walther@60358:     
walther@60385: 	     \<^rule_thm>\<open>real_num_collect\<close>, (*"[| l is_num; m is_num |] ==>l * n + m * n = (l + m) * n"*)
walther@60385: 	     \<^rule_thm>\<open>real_num_collect_assoc\<close>, (*"[| l is_num; m is_num |] ==> l * n + (m * n + k) =  (l + m) * n + k"*)
walther@60385: 	     \<^rule_thm>\<open>real_one_collect\<close>, (*"m is_num ==> n + m * n = (1 + m) * n"*)
walther@60385: 	     \<^rule_thm>\<open>real_one_collect_assoc\<close>, (*"m is_num ==> k + (n + m * n) = k + (1 + m) * n"*)
walther@60358:     
walther@60358: 	     \<^rule_eval>\<open>plus\<close> (eval_binop "#add_"), 
walther@60358: 	     \<^rule_eval>\<open>times\<close> (eval_binop "#mult_"),
wenzelm@60405: 	     \<^rule_eval>\<open>realpow\<close> (eval_binop "#power_")],
walther@60358:     scr = Rule.Prog (Program.prep_program @{thm expand_binoms_2.simps})};      
wneuper@59523: \<close>
wneuper@59523: 
walther@59887: subsection \<open>add to Know_Store\<close>
wneuper@59523: subsubsection \<open>rule-sets\<close>
walther@59618: ML \<open>val prep_rls' = Auto_Prog.prep_rls @{theory}\<close>
s1210629013@55444: 
wenzelm@60289: rule_set_knowledge
walther@60387:   norm_Poly = \<open>prep_rls' norm_Poly\<close> and
walther@60387:   Poly_erls = \<open>prep_rls' Poly_erls\<close> and
wenzelm@60286:   expand = \<open>prep_rls' expand\<close> and
wenzelm@60286:   expand_poly = \<open>prep_rls' expand_poly\<close> and
wenzelm@60286:   simplify_power = \<open>prep_rls' simplify_power\<close> and
neuper@52125: 
wenzelm@60286:   order_add_mult = \<open>prep_rls' order_add_mult\<close> and
wenzelm@60286:   collect_numerals = \<open>prep_rls' collect_numerals\<close> and
wenzelm@60286:   collect_numerals_= \<open>prep_rls' collect_numerals_\<close> and
wenzelm@60286:   reduce_012 = \<open>prep_rls' reduce_012\<close> and
wenzelm@60286:   discard_parentheses = \<open>prep_rls' discard_parentheses\<close> and
neuper@52125:  
wenzelm@60286:   make_polynomial = \<open>prep_rls' make_polynomial\<close> and
wenzelm@60286:   expand_binoms = \<open>prep_rls' expand_binoms\<close> and
wenzelm@60286:   rev_rew_p = \<open>prep_rls' rev_rew_p\<close> and
wenzelm@60286:   discard_minus = \<open>prep_rls' discard_minus\<close> and
wenzelm@60286:   expand_poly_ = \<open>prep_rls' expand_poly_\<close> and
neuper@52125:  
wenzelm@60286:   expand_poly_rat_ = \<open>prep_rls' expand_poly_rat_\<close> and
wenzelm@60286:   simplify_power_ = \<open>prep_rls' simplify_power_\<close> and
wenzelm@60286:   calc_add_mult_pow_ = \<open>prep_rls' calc_add_mult_pow_\<close> and
wenzelm@60286:   reduce_012_mult_ = \<open>prep_rls' reduce_012_mult_\<close> and
wenzelm@60286:   reduce_012_ = \<open>prep_rls' reduce_012_\<close> and
neuper@52125:  
wenzelm@60286:   discard_parentheses1 = \<open>prep_rls' discard_parentheses1\<close> and
wenzelm@60286:   order_mult_rls_ = \<open>prep_rls' order_mult_rls_\<close> and
wenzelm@60286:   order_add_rls_ = \<open>prep_rls' order_add_rls_\<close> and
wenzelm@60286:   make_rat_poly_with_parentheses = \<open>prep_rls' make_rat_poly_with_parentheses\<close>
wneuper@59523: 
wneuper@59526: subsection \<open>problems\<close>
wenzelm@60306: 
wenzelm@60306: problem pbl_simp_poly : "polynomial/simplification" =
wenzelm@60306:   \<open>Rule_Set.append_rules "empty" Rule_Set.empty [(*for preds in where_*)
wenzelm@60306:     \<^rule_eval>\<open>is_polyexp\<close> (eval_is_polyexp "")]\<close>
Walther@60449:   Method_Ref: "simplification/for_polynomials"
wenzelm@60306:   CAS: "Simplify t_t"
wenzelm@60306:   Given: "Term t_t"
wenzelm@60306:   Where: "t_t is_polyexp"
wenzelm@60306:   Find: "normalform n_n"
wneuper@59429: 
wneuper@59526: subsection \<open>methods\<close>
wneuper@59545: 
wneuper@59429: partial_function (tailrec) simplify :: "real \<Rightarrow> real"
wneuper@59429:   where
walther@59635: "simplify term = ((Rewrite_Set ''norm_Poly'') term)"
wenzelm@60303: 
wenzelm@60303: method met_simp_poly : "simplification/for_polynomials" =
wenzelm@60303:   \<open>{rew_ord'="tless_true", rls' = Rule_Set.empty, calc = [], srls = Rule_Set.empty,
wenzelm@60303:     prls = Rule_Set.append_rules "simplification_for_polynomials_prls" Rule_Set.empty
wenzelm@60303:       [(*for preds in where_*) \<^rule_eval>\<open>is_polyexp\<close> (eval_is_polyexp"")],
wenzelm@60303:     crls = Rule_Set.empty, errpats = [], nrls = norm_Poly}\<close>
wenzelm@60303:   Program: simplify.simps
wenzelm@60303:   Given: "Term t_t"
wenzelm@60303:   Where: "t_t is_polyexp"
wenzelm@60303:   Find: "normalform n_n"
wneuper@59472: ML \<open>
wneuper@59472: \<close> ML \<open>
Walther@60509: \<close>
neuper@37906: end