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;; Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
;; All rights reserved.
;; Copyright (C) 2007-2010, Gabriel Dos Reis.
;; All rights reserved.
;;
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions are
;; met:
;;
;; - Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;;
;; - Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in
;; the documentation and/or other materials provided with the
;; distribution.
;;
;; - Neither the name of The Numerical ALgorithms Group Ltd. nor the
;; names of its contributors may be used to endorse or promote products
;; derived from this software without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
;; IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
;; TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
;; PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
;; OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
;; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
;; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
;; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
;; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
;; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
;; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
(IMPORT-MODULE "vmlisp")
(in-package "BOOT")
;;macros from file vmlisp are necessary to compile this file
(DEFUN |intersection| (LIST-OF-ITEMS-1 LIST-OF-ITEMS-2)
(PROG (I H V)
(SETQ V (SETQ H (CONS NIL NIL)))
(COND
( (NOT (LISTP LIST-OF-ITEMS-1))
(SETQ LIST-OF-ITEMS-1 (LIST LIST-OF-ITEMS-1)) ) )
(COND
( (NOT (LISTP LIST-OF-ITEMS-2))
(SETQ LIST-OF-ITEMS-2 (LIST LIST-OF-ITEMS-2)) ) )
LP (COND
( (NOT (CONSP LIST-OF-ITEMS-1))
(RETURN (QCDR H)) )
( (|member|
(SETQ I (QCAR (RESETQ LIST-OF-ITEMS-1 (QCDR LIST-OF-ITEMS-1))))
(QCDR H)) )
( (|member| I LIST-OF-ITEMS-2)
(QRPLACD V (SETQ V (CONS I NIL))) ) )
(GO LP) ) )
(DEFUN |union| (LIST-OF-ITEMS-1 LIST-OF-ITEMS-2)
(PROG (I H V)
(SETQ H (SETQ V (CONS NIL NIL)))
(COND
( (NOT (LISTP LIST-OF-ITEMS-1))
(SETQ LIST-OF-ITEMS-1 (LIST LIST-OF-ITEMS-1)) ) )
(COND
( (NOT (LISTP LIST-OF-ITEMS-2))
(SETQ LIST-OF-ITEMS-2 (LIST LIST-OF-ITEMS-2)) ) )
LP1 (COND
( (NOT (CONSP LIST-OF-ITEMS-1))
(COND
( (CONSP LIST-OF-ITEMS-2)
(SETQ LIST-OF-ITEMS-1 (RESETQ LIST-OF-ITEMS-2 NIL)) )
( 'T
(RETURN (QCDR H)) ) ) )
( (NOT
(|member|
(SETQ I (QCAR (RESETQ LIST-OF-ITEMS-1 (QCDR LIST-OF-ITEMS-1))))
(QCDR H)))
(QRPLACD V (SETQ V (CONS I NIL))) ) )
(GO LP1) ) )
(DEFUN SETDIFFERENCE (LIST-OF-ITEMS-1 LIST-OF-ITEMS-2)
(PROG (I H V)
(SETQ H (SETQ V (CONS NIL NIL)))
(COND
( (NOT (LISTP LIST-OF-ITEMS-1))
(SETQ LIST-OF-ITEMS-1 (LIST LIST-OF-ITEMS-1)) ) )
(COND
( (NOT (LISTP LIST-OF-ITEMS-2))
(SETQ LIST-OF-ITEMS-2 (LIST LIST-OF-ITEMS-2)) ) )
LP1 (COND
( (NOT (CONSP LIST-OF-ITEMS-1))
(RETURN (QCDR H)) )
( (|member|
(SETQ I (QCAR (RESETQ LIST-OF-ITEMS-1 (QCDR LIST-OF-ITEMS-1))))
(QCDR H)) )
( (NOT (|member| I LIST-OF-ITEMS-2))
(QRPLACD V (SETQ V (CONS I NIL))) ) )
(GO LP1) ) )
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