View Javadoc

1   /*******************************************************************************
2    * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
3    *
4    * All rights reserved. This program and the accompanying materials
5    * are made available under the terms of the Eclipse Public License v1.0
6    * which accompanies this distribution, and is available at
7    *  http://www.eclipse.org/legal/epl-v10.html
8    *
9    * Alternatively, the contents of this file may be used under the terms of
10   * either the GNU Lesser General Public License Version 2.1 or later (the
11   * "LGPL"), in which case the provisions of the LGPL are applicable instead
12   * of those above. If you wish to allow use of your version of this file only
13   * under the terms of the LGPL, and not to allow others to use your version of
14   * this file under the terms of the EPL, indicate your decision by deleting
15   * the provisions above and replace them with the notice and other provisions
16   * required by the LGPL. If you do not delete the provisions above, a recipient
17   * may use your version of this file under the terms of the EPL or the LGPL.
18   *
19   * Based on the original MiniSat specification from:
20   *
21   * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
22   * Sixth International Conference on Theory and Applications of Satisfiability
23   * Testing, LNCS 2919, pp 502-518, 2003.
24   *
25   * See www.minisat.se for the original solver in C++.
26   *
27   * Contributors:
28   *   CRIL - initial API and implementation
29   *******************************************************************************/
30  package org.sat4j.pb.constraints.pb;
31  
32  import java.math.BigInteger;
33  
34  import org.sat4j.minisat.constraints.cnf.LearntBinaryClause;
35  import org.sat4j.minisat.core.ILits;
36  import org.sat4j.specs.IVecInt;
37  
38  public final class LearntBinaryClausePB extends LearntBinaryClause implements
39          PBConstr {
40  
41      public LearntBinaryClausePB(IVecInt ps, ILits voc) {
42          super(ps, voc);
43      }
44  
45      /**
46       * 
47       */
48      private static final long serialVersionUID = 1L;
49  
50      public IVecInt computeAnImpliedClause() {
51          return null;
52      }
53  
54      public BigInteger getCoef(int literal) {
55          return BigInteger.ONE;
56      }
57  
58      public BigInteger[] getCoefs() {
59          BigInteger[] tmp = new BigInteger[size()];
60          for (int i = 0; i < tmp.length; i++) {
61              tmp[i] = BigInteger.ONE;
62          }
63          return tmp;
64      }
65  
66      public BigInteger getDegree() {
67          return BigInteger.ONE;
68      }
69  
70  }