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sequence.cpp
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4  * Guido Tack <tack@gecode.org>
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7  * Guido Tack, 2005
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10  * $Date: 2012-09-07 17:31:22 +0200 (Fri, 07 Sep 2012) $ by $Author: schulte $
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37 
38 #include "test/set.hh"
39 
40 using namespace Gecode;
41 
42 namespace Test { namespace Set {
43 
45  namespace Sequence {
46 
52 
53  static IntSet ds_33(-1,2);
54 
56  class Sequence : public SetTest {
57  public:
59  Sequence(const char* t)
60  : SetTest(t,4,ds_33,false) {}
62  virtual bool solution(const SetAssignment& x) const {
63  int max = Gecode::Set::Limits::min - 1;
64  for (int i=0; i<4; i++) {
65  CountableSetRanges xir(x.lub, x[i]);
66  IntSet xi(xir);
67  if (xi.ranges() > 0) {
68  int oldMax = max;
69  max = xi.max();
70  if (xi.min() <= oldMax)
71  return false;
72  }
73  }
74  return true;
75  }
77  virtual void post(Space& home, SetVarArray& x, IntVarArray&) {
78  Gecode::sequence(home, x);
79  }
80  };
81  Sequence _sequence("Sequence::Sequence");
82 
84  class SeqU : public SetTest {
85  private:
86  int n;
87  public:
89  SeqU(int n0)
90  : SetTest("Sequence::SeqU"+str(n0),n0+1,ds_33,false), n(n0) {}
92  virtual bool solution(const SetAssignment& x) const {
93  int max = Gecode::Set::Limits::min - 1;
94  for (int i=0; i<n; i++) {
95  CountableSetRanges xir(x.lub, x[i]);
96  IntSet xi(xir);
97  if (xi.ranges() > 0) {
98  int oldMax = max;
99  max = xi.max();
100  if (xi.min() <= oldMax)
101  return false;
102  }
103  }
105  for (int i=n; i--; )
106  isrs[i].init(x.lub, x[i]);
107  FakeSpace* fs = new FakeSpace;
108  bool ret;
109  {
110  Region r(*fs);
111  Iter::Ranges::NaryUnion u(r, isrs, n);
112  CountableSetRanges xnr(x.lub, x[n]);
113  ret = Iter::Ranges::equal(u, xnr);
114  }
115  delete[] isrs;
116  delete fs;
117  return ret;
118  }
120  virtual void post(Space& home, SetVarArray& x, IntVarArray&) {
121  SetVarArgs xs(x.size()-1);
122  for (int i=x.size()-1; i--;)
123  xs[i]=x[i];
124  Gecode::sequence(home, xs, x[x.size()-1]);
125  }
126  };
127  SeqU _sequ0(0);
128  SeqU _sequ1(1);
129  SeqU _sequ3(3);
130 
131 }}}
132 
133 // STATISTICS: test-set
SeqU(int n0)
Create and register test.
Definition: sequence.cpp:89
NodeType t
Type of node.
Definition: bool-expr.cpp:234
const int min
Smallest allowed integer in integer set.
Definition: set.hh:101
Test for sequence constraint
Definition: sequence.cpp:56
Fake space for creation of regions.
Definition: set.hh:58
void max(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
Definition: arithmetic.cpp:57
virtual void post(Space &home, SetVarArray &x, IntVarArray &)
Post constraint on x.
Definition: sequence.cpp:77
bool equal(I &i, J &j)
Check whether range iterators i and j are equal.
virtual bool solution(const SetAssignment &x) const
Test whether x is solution
Definition: sequence.cpp:92
Integer variable array.
Definition: int.hh:741
Handle to region.
Definition: region.hpp:61
Computation spaces.
Definition: core.hpp:1362
void sequence(Home home, const IntVarArgs &x, const IntSet &s, int q, int l, int u, IntConLevel)
Post propagator for .
Definition: sequence.cpp:51
Sequence(const char *t)
Create and register test.
Definition: sequence.cpp:59
Gecode::IntArgs i(4, 1, 2, 3, 4)
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:238
virtual bool solution(const SetAssignment &x) const
Test whether x is solution
Definition: sequence.cpp:62
NNF * r
Right subtree.
Definition: bool-expr.cpp:246
int ranges(void) const
Return number of ranges of the specification.
Definition: int-set-1.hpp:134
Range iterator for union of iterators.
Gecode::IntSet lub
The common superset for all domains.
Definition: set.hh:170
Integer sets.
Definition: int.hh:171
virtual void post(Space &home, SetVarArray &x, IntVarArray &)
Post constraint on x.
Definition: sequence.cpp:120
union Gecode::@518::NNF::@57 u
Union depending on nodetype t.
General test support.
Definition: afc.cpp:43
Passing set variables.
Definition: set.hh:490
Node * x
Pointer to corresponding Boolean expression node.
Definition: bool-expr.cpp:253
Test for sequential-union constraint
Definition: sequence.cpp:84
Base class for tests with set constraints
Definition: set.hh:271
Generate all set assignments.
Definition: set.hh:158
Range iterator producing subsets of an IntSet.
Definition: set.hh:114
Set variable array
Definition: set.hh:571
Sequence _sequence("Sequence::Sequence")
Gecode toplevel namespace
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:985
int max(int i) const
Return maximum of range at position i.
Definition: int-set-1.hpp:121
int min(int i) const
Return minimum of range at position i.
Definition: int-set-1.hpp:115