1 /*
2 * Copyright (c) 2001, Zoltan Farkas All Rights Reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18 package net.sf.zel.nr;
19
20 import net.sf.zel.math.ExtendedMathContext;
21 import java.math.BigDecimal;
22 import java.math.BigInteger;
23 import java.math.MathContext;
24 import java.math.RoundingMode;
25 import javax.annotation.concurrent.Immutable;
26
27 /**
28 * Extend number; this is to continue the Object Oriented design style from the API
29 * I do belive some implementation where we do not encapsulate data is better.
30 * Will go down this path until some better idea comes allong
31 *
32 * @author zoly
33 */
34 @Immutable
35 public abstract class ExtendedNumber extends Number
36 {
37 public enum Type {REAL, INTEGER};
38
39 public abstract BigDecimal bigDecimalValue();
40
41 public abstract BigInteger bigIntegerValue();
42
43 public abstract Type getType();
44
45 public abstract int getPrecision();
46
47 public abstract ExtendedNumber zero();
48
49 public abstract ExtendedNumber one();
50
51 /**
52 * experimental native implementations
53 */
54 public abstract OperableGNUBigInteger gnuBigIntegerValue();
55
56 public abstract OperableGNUBigFloat gnuBigFloatValue();
57
58 }