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(* Title: "MathEngBasic/tactic.sml"
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Author: Walther Neuper
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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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"-----------------------------------------------------------------------------------------------";
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"----------- fun result, fun creates_assms ---------------------------------------------------";
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"-----------------------------------------------------------------------------------------------";
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"-----------------------------------------------------------------------------------------------";
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"-----------------------------------------------------------------------------------------------";
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"----------- fun result, fun creates_assms ---------------------------------------------------";
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"----------- fun result, fun creates_assms ---------------------------------------------------";
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"----------- fun result, fun creates_assms ---------------------------------------------------";
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val thm'' = ("real_mult_div_cancel2", @{thm real_mult_div_cancel2});
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val (f, res) = (@{term "a * x / (b * x) :: real"}, (@{term "a / b :: real"}, [@{term "k \<noteq> (0 :: real)"}]: term list))
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;
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Rewrite': theory' * Rule_Def.rew_ord' * Rule_Set.T * bool * thm'' * term * result -> Tactic.T;
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val tac = Rewrite' ("Diff", "dummy_ord", Rule_Set.empty, true, thm'', f, res)
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;
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if (Tactic.result tac |> term2str) = "a / b" then () else error "creates_assms CHANGED";
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if (Tactic.creates_assms tac |> terms2str) = "[\"k \<noteq> 0\"]" then () else error "creates_assms CHANGED";
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