01: /*
02: * logorc2.java
03: *
04: * Copyright (C) 2003 Peter Graves
05: * $Id: logorc2.java,v 1.6 2003/11/15 11:03:30 beedlem Exp $
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: */
21:
22: package org.armedbear.lisp;
23:
24: import java.math.BigInteger;
25:
26: // ### logorc2
27: // logorc2 integer-1 integer-2 => result-integer
28: // or integer-1 with complement of integer-2
29: public final class logorc2 extends Primitive2 {
30: private logorc2(String name) {
31: super (name);
32: }
33:
34: public LispObject execute(LispObject first, LispObject second)
35: throws ConditionThrowable {
36: if (first instanceof Fixnum) {
37: if (second instanceof Fixnum)
38: return new Fixnum(((Fixnum) first).getValue()
39: | ~((Fixnum) second).getValue());
40: if (second instanceof Bignum) {
41: BigInteger n1 = ((Fixnum) first).getBigInteger();
42: BigInteger n2 = ((Bignum) second).getValue();
43: return number(n1.or(n2.not()));
44: }
45: throw new ConditionThrowable(new TypeError(second,
46: "integer"));
47: }
48: if (first instanceof Bignum) {
49: BigInteger n1 = ((Bignum) first).getValue();
50: if (second instanceof Fixnum) {
51: BigInteger n2 = ((Fixnum) second).getBigInteger();
52: return number(n1.or(n2.not()));
53: }
54: if (second instanceof Bignum) {
55: BigInteger n2 = ((Bignum) second).getValue();
56: return number(n1.or(n2.not()));
57: }
58: throw new ConditionThrowable(new TypeError(second,
59: "integer"));
60: }
61: throw new ConditionThrowable(new TypeError(first, "integer"));
62: }
63:
64: private static final logorc2 LOGORC2 = new logorc2("logorc2");
65: }
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