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/* Poly_Gen_Relation Java class declaration and implementation.
Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
Copyright (C) 2010-2016 BUGSENG srl (http://bugseng.com)
This file is part of the Parma Polyhedra Library (PPL).
The PPL is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The PPL is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
For the most up-to-date information see the Parma Polyhedra Library
site: http://bugseng.com/products/ppl/ . */
package parma_polyhedra_library;
//! The relation between a polyhedron and a generator
/*! \ingroup PPL_CXX_interface
This class implements conjunctions of assertions on the relation
between a polyhedron and a generator.
*/
public class Poly_Gen_Relation {
public static final int NOTHING = 0;
public static final int SUBSUMES = 1;
//! Holds the value of the possible relations.
private int mask_value;
//! Constructs from a integer value.
public Poly_Gen_Relation(int val) {
mask_value = val;
}
//! The assertion that says nothing.
public static Poly_Gen_Relation nothing() {
return new Poly_Gen_Relation(Poly_Gen_Relation.NOTHING);
}
//! Adding the generator would not change the polyhedron.
public static Poly_Gen_Relation subsumes() {
return new Poly_Gen_Relation(Poly_Gen_Relation.SUBSUMES);
}
//! True if and only if \p this implies \p y.
public boolean implies(Poly_Gen_Relation y) {
return (this.mask_value & y.mask_value) == y.mask_value;
}
private static native void initIDs();
static {
initIDs();
}
}
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