partition.cc

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Guido Tack <tack@gecode.org>
 *
 *  Copyright:
 *     Guido Tack, 2005
 *
 *  Last modified:
 *     $Date: 2007-11-09 10:29:51 +0100 (Fri, 09 Nov 2007) $ by $Author: tack $
 *     $Revision: 5228 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
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#include "test/cpltset.hh"

using namespace Gecode;
using namespace Test::Set;

namespace Test { namespace CpltSet {

  namespace Partition {


    static const int d1r[2][2] = {
      {-4,-4},{3,5}
    };
    static IntSet d1(d1r,2);

    static IntSet ds_33(-3,3);
    static IntSet ds_4(4,4);
    static IntSet ds_13(1,3);

    class CpltSetPartition : public CpltSetTest {
    public:
      CpltSetPartition(const char* t) : CpltSetTest(t,2,ds_13,false) {}
      virtual bool solution(const SetAssignment& x) const {
        CountableSetRanges xr1(x.lub, x[0]);
        CountableSetRanges xr2(x.lub, x[1]);

        Iter::Ranges::Inter<CountableSetRanges, CountableSetRanges>
          d(xr1, xr2);
        Iter::Ranges::Union<CountableSetRanges, CountableSetRanges>
          u(xr1, xr2);
        IntSetRanges ir(ds_13);

        bool empty = !d();
        bool same  = Iter::Ranges::equal(u, ir);

        return empty && same;
      }

      virtual void post(Space* home, CpltSetVarArray& x, IntVarArray&) {
        // Test lex-bit order
        Gecode::partition(home, x);
      }
    };
    CpltSetPartition _cpltsetpartition("Partition");

    class CpltSetPartitionLex : public CpltSetTest {
    public:
      CpltSetPartitionLex(const char* t) : CpltSetTest(t,2,ds_13,false) {}
      virtual bool solution(const SetAssignment& x) const {
        CountableSetRanges xr1(x.lub, x[0]);
        CountableSetRanges xr2(x.lub, x[1]);

        Iter::Ranges::Inter<CountableSetRanges, CountableSetRanges>
          d(xr1, xr2);
        Iter::Ranges::Union<CountableSetRanges, CountableSetRanges>
          u(xr1, xr2);
        IntSetRanges ir(ds_13);

        bool empty = !d();
        bool same  = Iter::Ranges::equal(u, ir);

        CountableSetValues xv1(x.lub, x[0]);
        CountableSetValues xv2(x.lub, x[1]);
        int a = iter2int(xv1, 3);
        int b = iter2int(xv2, 3);
    
        return empty && same && (a < b);
      }

      virtual void post(Space* home, CpltSetVarArray& x, IntVarArray&) {
        Gecode::partitionLex(home, x, SRT_LE);
      }
    };
    CpltSetPartitionLex _cpltsetpartitionlex("Partition::Lex");

    class CpltSetPartitionNaryOne : public CpltSetTest {
    public:
      CpltSetPartitionNaryOne(const char* t)
      : CpltSetTest(t,3,ds_13,false, 0, 200, 10) {}
      virtual bool solution(const SetAssignment& x) const {
        CountableSetRanges xr1(x.lub, x[0]);
        CountableSetRanges xr2(x.lub, x[1]);
        CountableSetRanges xr3(x.lub, x[2]);

        Iter::Ranges::Inter<CountableSetRanges, CountableSetRanges>
          d(xr1, xr2);
        Iter::Ranges::Union<CountableSetRanges, CountableSetRanges>
          u(xr1, xr2);

        bool empty = !d();
        bool same  = Iter::Ranges::equal(u, xr3);

        return empty && same;
      }

      virtual void post(Space* home, CpltSetVarArray& x, IntVarArray&) {
        // Test lex-bit order
        int n = x.size() - 1;
        CpltSetVarArgs z(n);
        for (int i = 0; i < n; i++)
          z[i] = x[i];
        CpltSetVar y = x[n];
        partition(home, z, y);
      }
    };
    CpltSetPartitionNaryOne _cpltsetpartitionnaryone("Partition::NaryOne");

    class CpltSetPartitionNaryOneBigger : public CpltSetTest {
    public:
      CpltSetPartitionNaryOneBigger(const char* t)
      : CpltSetTest(t,3,d1,false, 0, 200, 80) {}
      virtual bool solution(const SetAssignment& x) const {
        CountableSetRanges xr1(x.lub, x[0]);
        CountableSetRanges xr2(x.lub, x[1]);
        CountableSetRanges xr3(x.lub, x[2]);
        Iter::Ranges::Cache<CountableSetRanges> cxr3(xr3);

        Iter::Ranges::Inter<CountableSetRanges, CountableSetRanges>
          d(xr1, xr2);
        Iter::Ranges::Union<CountableSetRanges, CountableSetRanges>
          u(xr1, xr2);

        bool empty = !d();
        bool same  = Iter::Ranges::equal(u, cxr3);

        cxr3.reset();
        Iter::Ranges::Singleton m(3,5);

        bool fixed = Iter::Ranges::equal(m, cxr3);

        return empty && same && fixed;
      }

      virtual void post(Space* home, CpltSetVarArray& x, IntVarArray&) {
        int n = x.size() - 1;
        CpltSetVarArgs z(n);
        for (int i = 0; i < n; i++)
          z[i] = x[i];
        CpltSetVar y = x[n];
        partition(home, z, y);
        dom(home, y, SRT_EQ, 3, 5);
      }
    };
    CpltSetPartitionNaryOneBigger 
      _cpltsetpartitionnaryonebigger("Partition::NaryOne::Bigger");


}}}

// STATISTICS: test-cpltset