neuper@41931: (* Title:  Knowledge/DiophantEq.thy
neuper@41931:    Author: Mathias Lehnfeld 2011
neuper@41931:    (c) due to copyright terms
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neuper@41931: *)
neuper@41931: 
wneuper@59424: theory DiophantEq imports Base_Tools Equation Test
neuper@41931: begin
neuper@41921: 
neuper@52148: axiomatization where
neuper@41931:   int_isolate_add: "(bdv + a = b) = (bdv = b + (-1)*(a::int))"
neuper@41921: 
wneuper@59472: text \<open>problemclass for the usecase\<close>
wneuper@59472: setup \<open>KEStore_Elems.add_pbts
wenzelm@60290:   [(Problem.prep_input @{theory} "pbl_equ_dio" [] Problem.id_empty
walther@59997:       (["diophantine", "equation"],
walther@59997:         [("#Given" ,["boolTestGiven e_e", "intTestGiven (v_v::int)"]),
s1210629013@55339:           (*                                      TODO: drop ^^^^^*)
s1210629013@55339:           ("#Where" ,[]),
s1210629013@55339:           ("#Find"  ,["boolTestFind s_s"])],
walther@59997:         Rule_Set.empty, SOME "solve (e_e::bool, v_v::int)", [["LinEq", "solve_lineq_equation"]]))]\<close>
neuper@41921: 
wneuper@59472: text \<open>method solving the usecase\<close>
wneuper@59545: 
wneuper@59504: partial_function (tailrec) diophant_equation :: "bool => int => bool"
wneuper@59504:   where
walther@59635: "diophant_equation e_e v_v = (
walther@59635:   Repeat (
walther@59637:     (Try (Rewrite_Inst [(''bdv'', v_v)] ''int_isolate_add'' )) #>
walther@59637:     (Try (Calculate ''PLUS'')) #>
walther@59635:     (Try (Calculate ''TIMES''))) e_e)"
wenzelm@60303: 
wenzelm@60303: method met_test_diophant : "Test/solve_diophant" =
wenzelm@60303:   \<open>{rew_ord' = "e_rew_ord", rls' = tval_rls, srls = Rule_Set.empty, prls = Rule_Set.empty, calc = [],
wenzelm@60303:     crls = tval_rls, errpats = [], nrls = Test_simplify}\<close>
wenzelm@60303:   Program: diophant_equation.simps
wenzelm@60303:   Given: "boolTestGiven e_e" "intTestGiven (v_v::int)"
wenzelm@60303: (*                                  TODO: drop ^^^^^*)
wenzelm@60303:   Where:
wenzelm@60303:   Find: "boolTestFind s_s"
wenzelm@60303: ML \<open>
walther@60278: \<close> ML \<open>
wneuper@59472: \<close>
neuper@41921: 
walther@60278: end