Initial population.

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+%% Oh Emacs, this is a -*- Lisp -*- file despite apperance.
+\documentclass{article}
+\usepackage{axiom}
+
+\title{\File{src/interp/union.lisp} Pamphlet}
+\author{Timothy Daly}
+
+\begin{document}
+\maketitle
+
+\begin{abstract}
+\end{abstract}
+
+\tableofcontents
+\eject
+
+\section{License}
+
+<<license>>=
+;; Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+;; 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.
+
+@
+<<*>>=
+<<license>>
+
+(IMPORT-MODULE "vmlisp")
+(in-package "VMLISP")
+;;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 (PAIRP 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 INTERSECTIONQ (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 (PAIRP LIST-OF-ITEMS-1))
+          (RETURN (QCDR H)) )
+        ( (QMEMQ
+            (SETQ I (QCAR (RESETQ LIST-OF-ITEMS-1 (QCDR LIST-OF-ITEMS-1))))
+            (QCDR H)) )
+        ( (QMEMQ 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 (PAIRP LIST-OF-ITEMS-1))
+          (COND
+            ( (PAIRP 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 UNIONQ (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 (PAIRP LIST-OF-ITEMS-1))
+          (COND
+            ( (PAIRP LIST-OF-ITEMS-2)
+              (SETQ LIST-OF-ITEMS-1 (RESETQ LIST-OF-ITEMS-2 NIL)) )
+            ( 'T
+              (RETURN (QCDR H)) ) ) )
+        ( (NOT
+            (QMEMQ
+              (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 (PAIRP 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) ) )
+
+(DEFUN SETDIFFERENCEQ (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 (PAIRP LIST-OF-ITEMS-1))
+          (RETURN (QCDR H)) )
+        ( (QMEMQ
+            (SETQ I (QCAR (RESETQ LIST-OF-ITEMS-1 (QCDR LIST-OF-ITEMS-1))))
+            (QCDR H)) )
+        ( (NOT (QMEMQ I LIST-OF-ITEMS-2))
+          (QRPLACD V (SETQ V (CONS I NIL))) ) )
+      (GO LP1) ) )
+@
+\eject
+\begin{thebibliography}{99}
+\bibitem{1} nothing
+\end{thebibliography}
+\end{document}