subsumption.hpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2009
 *
 *  Last modified:
 *     $Date: 2011-05-25 16:56:41 +0200 (Wed, 25 May 2011) $ by $Author: schulte $
 *     $Revision: 12022 $
 *
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namespace Gecode { namespace Int { namespace Unary {

  template<class Task>
  ExecStatus
  subsumed(Space& home, Propagator& p, TaskArray<Task>& t) {
    TaskViewArray<typename TaskTraits<Task>::TaskViewFwd> f(t);
    sort<typename TaskTraits<Task>::TaskViewFwd,STO_EST,true>(f);

    for (int i=f.size()-1; i--; )
      if (f[i].lct() > f[i+1].est())
        return ES_OK;

    return home.ES_SUBSUMED(p);
  }
  
}}}

// STATISTICS: int-prop