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.UnitClause; 35 import org.sat4j.minisat.core.ILits; 36 import org.sat4j.specs.IVecInt; 37 38 public final class UnitClausePB extends UnitClause implements PBConstr { 39 40 private final ILits voc; 41 42 public UnitClausePB(int value, ILits voc) { 43 super(value); 44 this.voc = voc; 45 } 46 47 /** 48 * 49 */ 50 private static final long serialVersionUID = 1L; 51 52 public IVecInt computeAnImpliedClause() { 53 return null; 54 } 55 56 public BigInteger getCoef(int p) { 57 return BigInteger.ONE; 58 } 59 60 public BigInteger[] getCoefs() { 61 return new BigInteger[] { BigInteger.ONE }; 62 } 63 64 public BigInteger getDegree() { 65 return BigInteger.ONE; 66 } 67 68 public int[] getLits() { 69 return new int[] { this.literal }; 70 } 71 72 public ILits getVocabulary() { 73 return this.voc; 74 } 75 76 }