relax.cpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2016
 *
 *  Last modified:
 *     $Date: 2017-01-09 16:29:59 +0100 (Mon, 09 Jan 2017) $ by $Author: schulte $
 *     $Revision: 15365 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
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#include <gecode/set.hh>
#include <gecode/search/relax.hh>

namespace Gecode { namespace Set {

  class Relax {
  public:
    ExecStatus operator ()(Home home, SetVar x, SetVar sx);
  };

  forceinline ExecStatus
  Relax::operator ()(Home home, SetVar x, SetVar sx) {
    SetView xv(x);
    SetView sxv(sx);
    SetVarGlbRanges l(sxv);
    GECODE_ME_CHECK(xv.includeI(home, l));
    SetVarLubRanges u(sxv);
    GECODE_ME_CHECK(xv.intersectI(home, u));
    return ES_OK;
  }

}}

namespace Gecode {

  void
  relax(Home home, const SetVarArgs& x, const SetVarArgs& sx,
        Rnd r, double p) {
    if (x.size() != sx.size())
      throw Set::ArgumentSizeMismatch("Set::relax");
    if ((p < 0.0) || (p > 1.0))
      throw Set::OutOfLimits("Set::relax");
    Set::Relax ir;
    Search::relax<SetVarArgs,Set::Relax>(home,x,sx,r,p,ir);
  }

}

// STATISTICS: set-other