source: trunk/abcl/src/org/armedbear/lisp/boole.lisp @ 14207

Last change on this file since 14207 was 11391, checked in by vvoutilainen, 13 years ago

ABCL license is GPL + Classpath exception. This was intended
by Peter Graves, the original author. For reference, see
http://sourceforge.net/mailarchive/forum.php?thread_name=20040721115302.839%40prufrock&forum_name=armedbear-j-announce

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.3 KB
Line 
1;;; boole.lisp
2;;;
3;;; Copyright (C) 2003-2005 Peter Graves
4;;; $Id: boole.lisp 11391 2008-11-15 22:38:34Z vvoutilainen $
5;;;
6;;; This program is free software; you can redistribute it and/or
7;;; modify it under the terms of the GNU General Public License
8;;; as published by the Free Software Foundation; either version 2
9;;; of the License, or (at your option) any later version.
10;;;
11;;; This program is distributed in the hope that it will be useful,
12;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14;;; GNU General Public License for more details.
15;;;
16;;; You should have received a copy of the GNU General Public License
17;;; along with this program; if not, write to the Free Software
18;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19;;;
20;;; As a special exception, the copyright holders of this library give you
21;;; permission to link this library with independent modules to produce an
22;;; executable, regardless of the license terms of these independent
23;;; modules, and to copy and distribute the resulting executable under
24;;; terms of your choice, provided that you also meet, for each linked
25;;; independent module, the terms and conditions of the license of that
26;;; module.  An independent module is a module which is not derived from
27;;; or based on this library.  If you modify this library, you may extend
28;;; this exception to your version of the library, but you are not
29;;; obligated to do so.  If you do not wish to do so, delete this
30;;; exception statement from your version.
31
32(defun boole (op n1 n2)
33  (unless (and (integerp n1) (integerp n2))
34    (error 'type-error
35           :datum (if (integerp n1) n2 n1)
36           :expected-type 'integer))
37  (case op
38    (#.boole-clr 0)
39    (#.boole-set -1)
40    (#.boole-1 n1)
41    (#.boole-2 n2)
42    (#.boole-c1 (lognot n1))
43    (#.boole-c2 (lognot n2))
44    (#.boole-and (logand n1 n2))
45    (#.boole-ior (logior n1 n2))
46    (#.boole-xor (logxor n1 n2))
47    (#.boole-eqv (logeqv n1 n2))
48    (#.boole-nand (lognand n1 n2))
49    (#.boole-nor (lognor n1 n2))
50    (#.boole-andc1 (logandc1 n1 n2))
51    (#.boole-andc2 (logandc2 n1 n2))
52    (#.boole-orc1 (logorc1 n1 n2))
53    (#.boole-orc2 (logorc2 n1 n2))
54    (t
55     (error 'type-error
56            :datum op
57            :expected-type (list 'integer #.boole-clr #.boole-orc2)))))
Note: See TracBrowser for help on using the repository browser.