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(* Title: partial fraction decomposition
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Author: Jan Rocnik
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(c) due to copyright terms
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*)
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"--------------------------------------------------------";
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"table of contents --------------------------------------";
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"--------------------------------------------------------";
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"----------- why helpless here ? ------------------------";
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"----------- why not nxt = Model_Problem here ? ---------";
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"--------------------------------------------------------";
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"--------------------------------------------------------";
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"--------------------------------------------------------";
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"----------- why helpless here ? ------------------------";
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"----------- why helpless here ? ------------------------";
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"----------- why helpless here ? ------------------------";
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val fmz = ["filterExpression (X z = 3 / (z - 1/4 + -1/8 * (1/(z::real))))",
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"stepResponse (x[n::real]::bool)"];
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val (dI,pI,mI) = ("Isac", ["inverse", "Z_Transform", "SignalProcessing"],
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["SignalProcessing","Z_Transform","inverse"]);
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val (p,_,f,nxt,_,pt) = CalcTreeTEST [(fmz, (dI,pI,mI))];
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val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Add_Given";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Add_Find";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Specify_Theory";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Specify_Problem";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Specify_Method";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt; "nxt = Apply_Method";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt;
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"nxt = Rewrite (ruleZY, Inverse_Z_Transform.ruleZY) --> X z = 3 / (z - 1 / 4 + -1 / 8 * (1 / z))";
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val (p,_,f,nxt,_,pt) = me nxt p [] pt;
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"nxt = Rewrite_Set norm_Rational --> X' z = 3 / (z * (z - 1 / 4 + -1 / 8 * (1 / z)))";
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"~~~~~ fun me, args:"; val ((_,tac), (p:pos'), _, (pt:ptree)) = (nxt, p, [], pt);
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val ("ok", (_, _, ptp)) = locatetac tac (pt,p)
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val (pt, p) = ptp;
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"~~~~~ fun step, args:"; val (((ip as (_,p_)):pos'), ((ptp as (pt,p), tacis):calcstate)) =
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(p, ((pt, e_pos'),[]));
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val pIopt = get_pblID (pt,ip);
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ip = ([],Res); "false";
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tacis; " = []";
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pIopt; (* = SOME ["inverse", "Z_Transform", "SignalProcessing"]*)
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member op = [Pbl,Met] p_ andalso is_none (get_obj g_env pt (fst p)); "false";
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(*nxt_solve_ (pt,ip); "WAS isalist2list applied to NON-list 'no_meth'"
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THIS MEANS: replace no_meth by [no_meth] in Script.*)
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(*WAS val ("helpless",_) = step p ((pt, e_pos'),[]) *)
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(*WAS val (p,_,f,nxt,_,pt) = me nxt p [] pt; "Empty_Tac instead SubProblem";*)
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"----------- why not nxt = Model_Problem here ? ---------";
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"----------- why not nxt = Model_Problem here ? ---------";
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"----------- why not nxt = Model_Problem here ? ---------";
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