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51 lines
1.7 KiB
Common Lisp
51 lines
1.7 KiB
Common Lisp
;;; -*- Mode: Lisp; Syntax: Common-Lisp; Package: snark-user -*-
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;;; File: reverse-example.lisp
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;;; The contents of this file are subject to the Mozilla Public License
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;;; Version 1.1 (the "License"); you may not use this file except in
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;;; compliance with the License. You may obtain a copy of the License at
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;;; http://www.mozilla.org/MPL/
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;;;
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;;; Software distributed under the License is distributed on an "AS IS"
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;;; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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;;; License for the specific language governing rights and limitations
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;;; under the License.
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;;;
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;;; The Original Code is SNARK.
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;;; The Initial Developer of the Original Code is SRI International.
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;;; Portions created by the Initial Developer are Copyright (C) 1981-2006.
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;;; All Rights Reserved.
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;;;
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;;; Contributor(s): Mark E. Stickel <stickel@ai.sri.com>.
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(in-package :snark-user)
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(defun reverse-example (&key (length 3) magic)
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(let ((l nil))
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(dotimes (i length)
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(push i l))
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(initialize)
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(declare-function '$$cons 2 :new-name 'cons)
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(declare-function '$$list :any :new-name 'list)
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(declare-function '$$list* :any :new-name 'list*)
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(cond
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(magic
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(use-hyperresolution t)
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(use-magic-transformation t))
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(t
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(use-resolution t)
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(assert-supported nil)
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(assert-sequential t)
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(print-rows-shortened t)))
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(assert '(reverse nil nil))
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(assert '(implied-by
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(reverse (cons ?x ?l) ?l1)
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(and
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(reverse ?l ?l2)
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(append ?l2 (cons ?x nil) ?l1))))
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(assert '(append nil ?l ?l))
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(assert '(implied-by
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(append (cons ?x ?l1) ?l2 (cons ?x ?l3))
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(append ?l1 ?l2 ?l3)))
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(prove `(reverse (list ,@l) ?l) :answer '(values ?l))))
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;;; reverse-example.lisp EOF
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