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Steel Bank Common Lisp (SBCL) is free software, and comes with
absolutely no warranty.
SBCL is derived from CMU CL, which was released into the public
domain, subject only to the BSD-style "free, but credit must be given
and copyright notices must be retained" licenses in the LOOP macro
(from MIT and Symbolics) and in the PCL implementation of CLOS (from
Xerox).
After CMU CL was released into the public domain, it was maintained by
volunteers, who continued the tradition of releasing their work into
the public domain.
All changes to SBCL since the fork from CMU CL have been released into
the public domain in jurisdictions where this is possible, or under
the FreeBSD licence where not.
The CityHash mix function as adapted in hopscotch.c has an MIT license.
Thus, there are no known obstacles to copying, using, and modifying
SBCL freely, as long as copyright notices of MIT, Symbolics, Xerox and
Gerd Moellmann are retained.
================================================================================
;;;; Portions of LOOP are Copyright (c) 1986 by the Massachusetts Institute
;;;; of Technology. All Rights Reserved.
;;;;
;;;; Permission to use, copy, modify and distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted,
;;;; provided that the M.I.T. copyright notice appear in all copies and that
;;;; both that copyright notice and this permission notice appear in
;;;; supporting documentation. The names "M.I.T." and "Massachusetts
;;;; Institute of Technology" may not be used in advertising or publicity
;;;; pertaining to distribution of the software without specific, written
;;;; prior permission. Notice must be given in supporting documentation that
;;;; copying distribution is by permission of M.I.T. M.I.T. makes no
;;;; representations about the suitability of this software for any purpose.
;;;; It is provided "as is" without express or implied warranty.
;;;;
;;;; Massachusetts Institute of Technology
;;;; 77 Massachusetts Avenue
;;;; Cambridge, Massachusetts 02139
================================================================================
;;;; Portions of LOOP are Copyright (c) 1989, 1990, 1991, 1992 by Symbolics,
;;;; Inc. All Rights Reserved.
;;;;
;;;; Permission to use, copy, modify and distribute this software and its
;;;; documentation for any purpose and without fee is hereby granted,
;;;; provided that the Symbolics copyright notice appear in all copies and
;;;; that both that copyright notice and this permission notice appear in
;;;; supporting documentation. The name "Symbolics" may not be used in
;;;; advertising or publicity pertaining to distribution of the software
;;;; without specific, written prior permission. Notice must be given in
;;;; supporting documentation that copying distribution is by permission of
;;;; Symbolics. Symbolics makes no representations about the suitability of
;;;; this software for any purpose. It is provided "as is" without express
;;;; or implied warranty.
;;;;
;;;; Symbolics, CLOE Runtime, and Minima are trademarks, and CLOE, Genera,
;;;; and Zetalisp are registered trademarks of Symbolics, Inc.
;;;;
;;;; Symbolics, Inc.
;;;; 8 New England Executive Park, East
;;;; Burlington, Massachusetts 01803
================================================================================
;;;; copyright information from original PCL sources:
;;;;
;;;; Copyright (c) 1985, 1986, 1987, 1988, 1989, 1990 Xerox Corporation.
;;;; All rights reserved.
;;;;
;;;; Use and copying of this software and preparation of derivative works based
;;;; upon this software are permitted. Any distribution of this software or
;;;; derivative works must comply with all applicable United States export
;;;; control laws.
;;;;
;;;; This software is made available AS IS, and Xerox Corporation makes no
;;;; warranty about the software, its performance or its conformity to any
;;;; specification.
================================================================================
;;; Copyright (C) 2002 Gerd Moellmann <gerd.moellmann@t-online.de>
;;; All rights reserved.
;;;
;;; Redistribution and use in source and binary forms, with or without
;;; modification, are permitted provided that the following conditions
;;; are met:
;;;
;;; 1. Redistributions of source code must retain the above copyright
;;; notice, this list of conditions and the following disclaimer.
;;; 2. 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.
;;; 3. The name of the author may not be used to endorse or promote
;;; products derived from this software without specific prior written
;;; permission.
;;;
;;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
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