00001 /* Variable Java class declaration and implementation. 00002 Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it> 00003 Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com) 00004 00005 This file is part of the Parma Polyhedra Library (PPL). 00006 00007 The PPL is free software; you can redistribute it and/or modify it 00008 under the terms of the GNU General Public License as published by the 00009 Free Software Foundation; either version 3 of the License, or (at your 00010 option) any later version. 00011 00012 The PPL is distributed in the hope that it will be useful, but WITHOUT 00013 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00014 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 00015 for more details. 00016 00017 You should have received a copy of the GNU General Public License 00018 along with this program; if not, write to the Free Software Foundation, 00019 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA. 00020 00021 For the most up-to-date information see the Parma Polyhedra Library 00022 site: http://www.cs.unipr.it/ppl/ . */ 00023 00024 package parma_polyhedra_library; 00025 00026 import javax.management.RuntimeErrorException; 00027 00029 00038 public class Variable implements Comparable<Variable> { 00040 private int varid; 00041 00043 00047 public Variable(int i) { 00048 if (i < 0) 00049 throw new 00050 RuntimeErrorException(new Error("parma_polyhedra_library.Variable::" 00051 + "Variable:" 00052 + " an index variable" 00053 + " cannot be negative.")); 00054 varid = i; 00055 } 00056 00058 public int id() { 00059 return varid; 00060 } 00061 00067 public int compareTo(Variable v) { 00068 return varid - v.varid; 00069 } 00070 00071 private static native void initIDs(); 00072 static { 00073 initIDs(); 00074 } 00075 }
1.6.3