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overload.hpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *     Guido Tack <tack@gecode.org>
00006  *
00007  *  Copyright:
00008  *     Christian Schulte, 2009
00009  *     Guido Tack, 2010
00010  *
00011  *  This file is part of Gecode, the generic constraint
00012  *  development environment:
00013  *     http://www.gecode.org
00014  *
00015  *  Permission is hereby granted, free of charge, to any person obtaining
00016  *  a copy of this software and associated documentation files (the
00017  *  "Software"), to deal in the Software without restriction, including
00018  *  without limitation the rights to use, copy, modify, merge, publish,
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00020  *  permit persons to whom the Software is furnished to do so, subject to
00021  *  the following conditions:
00022  *
00023  *  The above copyright notice and this permission notice shall be
00024  *  included in all copies or substantial portions of the Software.
00025  *
00026  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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00034  */
00035 
00036 namespace Gecode { namespace Int { namespace Cumulative {
00037 
00038   // Overload checking for mandatory tasks
00039   template<class ManTask>
00040   ExecStatus
00041   overload(Space& home, int c, TaskArray<ManTask>& t) {
00042     TaskViewArray<typename TaskTraits<ManTask>::TaskViewFwd> f(t);
00043     sort<typename TaskTraits<ManTask>::TaskViewFwd,STO_LCT,true>(f);
00044 
00045     Region r;
00046     OmegaTree<typename TaskTraits<ManTask>::TaskViewFwd> o(r,c,f);
00047 
00048     for (int i=0; i<f.size(); i++) {
00049       if (f[i].mandatory())
00050         o.insert(i);
00051       if (o.env() > static_cast<long long int>(c)*f[i].lct())
00052         GECODE_ME_CHECK(f[i].excluded(home));
00053     }
00054     return ES_OK;
00055   }
00056 
00057 }}}
00058 
00059 // STATISTICS: int-prop