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/*
* Main authors:
* Mikael Lagerkvist <lagerkvist@gecode.org>
*
* Copyright:
* Mikael Lagerkvist, 2005
*
* Last modified:
* $Date: 2011-07-13 14:17:55 +0200 (Wed, 13 Jul 2011) $ by $Author: tack $
* $Revision: 12188 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __GECODE_INT_CUMULATIVES_HH__
#define __GECODE_INT_CUMULATIVES_HH__
#include <gecode/int.hh>
namespace Gecode { namespace Int { namespace Cumulatives {
/** \namespace Gecode::Int::Cumulatives
* \brief %Cumulatives propagators
*
* This namespace contains a propagator for the
* cumulatives constraint as presented in
\verbatim
@inproceedings{DBLP:conf/cp/BeldiceanuC02,
author = {Nicolas Beldiceanu and Mats Carlsson},
title = {A New Multi-resource cumulatives Constraint
with Negative Heights.},
booktitle = {CP},
year = {2002},
pages = {63-79},
ee = {http://link.springer.de/link/service/series/0558/
bibs/2470/24700063.htm},
crossref = {DBLP:conf/cp/2002},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
@proceedings{DBLP:conf/cp/2002,
editor = {Pascal Van Hentenryck},
title = {Principles and Practice of Constraint Programming -
CP 2002, 8th International Conference, CP 2002,
Ithaca, NY, USA, September 9-13, 2002, Proceedings},
booktitle = {CP},
publisher = {Springer},
series = {Lecture Notes in Computer Science},
volume = {2470},
year = {2002},
isbn = {3-540-44120-4},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
\endverbatim
*/
/**
* \brief %Propagator for the cumulatives constraint
*
* This class implements Beldiceanu's and Carlsson's sweep-line
* propagation algorithm for the cumulatives constraint.
*
* Requires \code #include <gecode/int/cumulatives.hh> \endcode
* \ingroup FuncIntProp
*/
template<class ViewM, class ViewP, class ViewU, class View>
class Val : public Propagator {
protected:
ViewArray<ViewM> m;
ViewArray<View> s;
ViewArray<ViewP> p;
ViewArray<View> e;
ViewArray<ViewU> u;
SharedArray<int> c;
const bool at_most;
Val(Space& home, bool share, Val<ViewM, ViewP, ViewU, View>& p);
Val(Home home, const ViewArray<ViewM>&, const ViewArray<View>&,
const ViewArray<ViewP>&, const ViewArray<View>&,
const ViewArray<ViewU>&, const SharedArray<int>&, bool);
ExecStatus prune(Space& home, int low, int up, int r,
int ntask, int su,
int* contribution,
int* prune_tasks, int& prune_tasks_size);
public:
/// Create copy during cloning
virtual Actor* copy(Space& home, bool share);
/// Cost function (defined as low quadratic)
virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
/// Perform propagation
virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
/// Post propagator
static ExecStatus post(Home home, const ViewArray<ViewM>&,
const ViewArray<View>&, const ViewArray<ViewP>&,
const ViewArray<View>&, const ViewArray<ViewU>&,
const SharedArray<int>&, bool);
/// Dispose propagator
virtual size_t dispose(Space& home);
};
}}}
#include <gecode/int/cumulatives/val.hpp>
#endif
// STATISTICS: int-prop
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