Jip J. Dekker
1d9faf38de
git-subtree-dir: software/gecode git-subtree-split: 313e87646da4fc2752a70e83df16d993121a8e40
132 lines
4.5 KiB
C++
132 lines
4.5 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Mikael Lagerkvist <lagerkvist@gecode.org>
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*
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* Copyright:
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* Mikael Lagerkvist, 2005
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef GECODE_INT_CUMULATIVES_HH
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#define GECODE_INT_CUMULATIVES_HH
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#include <gecode/int.hh>
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namespace Gecode { namespace Int { namespace Cumulatives {
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/** \namespace Gecode::Int::Cumulatives
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* \brief %Cumulatives propagators
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*
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* This namespace contains a propagator for the
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* cumulatives constraint as presented in
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\verbatim
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@inproceedings{DBLP:conf/cp/BeldiceanuC02,
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author = {Nicolas Beldiceanu and Mats Carlsson},
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title = {A New Multi-resource cumulatives Constraint
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with Negative Heights.},
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booktitle = {CP},
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year = {2002},
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pages = {63-79},
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ee = {http://link.springer.de/link/service/series/0558/
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bibs/2470/24700063.htm},
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crossref = {DBLP:conf/cp/2002},
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bibsource = {DBLP, http://dblp.uni-trier.de}
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}
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@proceedings{DBLP:conf/cp/2002,
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editor = {Pascal Van Hentenryck},
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title = {Principles and Practice of Constraint Programming -
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CP 2002, 8th International Conference, CP 2002,
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Ithaca, NY, USA, September 9-13, 2002, Proceedings},
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booktitle = {CP},
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publisher = {Springer},
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series = {Lecture Notes in Computer Science},
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volume = {2470},
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year = {2002},
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isbn = {3-540-44120-4},
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bibsource = {DBLP, http://dblp.uni-trier.de}
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}
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\endverbatim
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*/
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/**
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* \brief %Propagator for the cumulatives constraint
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*
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* This class implements Beldiceanu's and Carlsson's sweep-line
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* propagation algorithm for the cumulatives constraint.
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*
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* Requires \code #include <gecode/int/cumulatives.hh> \endcode
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* \ingroup FuncIntProp
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*/
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template<class ViewM, class ViewP, class ViewU, class View>
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class Val : public Propagator {
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protected:
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ViewArray<ViewM> m;
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ViewArray<View> s;
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ViewArray<ViewP> p;
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ViewArray<View> e;
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ViewArray<ViewU> u;
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SharedArray<int> c;
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const bool at_most;
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Val(Space& home, Val<ViewM, ViewP, ViewU, View>& p);
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Val(Home home, const ViewArray<ViewM>&, const ViewArray<View>&,
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const ViewArray<ViewP>&, const ViewArray<View>&,
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const ViewArray<ViewU>&, const SharedArray<int>&, bool);
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ExecStatus prune(Space& home, int low, int up, int r,
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int ntask, int su,
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int* contribution,
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int* prune_tasks, int& prune_tasks_size);
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public:
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/// Create copy during cloning
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virtual Actor* copy(Space& home);
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/// Cost function (defined as low quadratic)
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virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
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/// Schedule function
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virtual void reschedule(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post propagator
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static ExecStatus post(Home home, const ViewArray<ViewM>&,
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const ViewArray<View>&, const ViewArray<ViewP>&,
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const ViewArray<View>&, const ViewArray<ViewU>&,
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const SharedArray<int>&, bool);
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/// Dispose propagator
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virtual size_t dispose(Space& home);
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};
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}}}
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#include <gecode/int/cumulatives/val.hpp>
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#endif
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// STATISTICS: int-prop
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