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distinct.cpp
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4  * Guido Tack <tack@gecode.org>
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7  * Guido Tack, 2005
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33 
34 #include "test/set.hh"
35 
36 using namespace Gecode;
37 
38 namespace Test { namespace Set {
39 
41  namespace Distinct {
42 
48 
49  static IntSet ds_33(-2,2);
50  static IntSet ds_44(-4,4);
51 
53  class AtmostOne : public SetTest {
54  public:
56  AtmostOne(const char* t)
57  : SetTest(t,3,ds_33,false) {}
59  virtual bool solution(const SetAssignment& x) const {
60  {
61  CountableSetRanges xr0(x.lub, x[0]);
62  CountableSetRanges xr1(x.lub, x[1]);
64  i(xr0,xr1);
65  if (Iter::Ranges::size(i)>1)
66  return false;
67  }
68  {
69  CountableSetRanges xr0(x.lub, x[0]);
70  CountableSetRanges xr2(x.lub, x[2]);
72  i(xr0,xr2);
73  if (Iter::Ranges::size(i)>1)
74  return false;
75  }
76  {
77  CountableSetRanges xr1(x.lub, x[1]);
78  CountableSetRanges xr2(x.lub, x[2]);
80  i(xr1,xr2);
81  if (Iter::Ranges::size(i)>1)
82  return false;
83  }
84  {
85  CountableSetRanges xr0(x.lub, x[0]);
86  CountableSetRanges xr1(x.lub, x[1]);
87  CountableSetRanges xr2(x.lub, x[2]);
88  if (Iter::Ranges::size(xr0)!=3 ||
89  Iter::Ranges::size(xr1)!=3 ||
90  Iter::Ranges::size(xr2)!=3)
91  return false;
92  }
93  return true;
94  }
96  virtual void post(Space& home, SetVarArray& x, IntVarArray&) {
97  SetVar s1(home, IntSet::empty, -2, 2, 0U, 1U);
98  Gecode::rel(home, x[0], SOT_INTER, x[1], SRT_EQ, s1);
99  SetVar s2(home, IntSet::empty, -2, 2, 0U, 1U);
100  Gecode::rel(home, x[0], SOT_INTER, x[2], SRT_EQ, s2);
101  SetVar s3(home, IntSet::empty, -2, 2, 0U, 1U);
102  Gecode::rel(home, x[1], SOT_INTER, x[2], SRT_EQ, s3);
103  Gecode::atmostOne(home, x, 3);
104  }
105  };
106  AtmostOne _atmostone("Distinct::AtmostOne");
107 
109 
110 }}}
111 
112 // STATISTICS: test-set
Post propagator for SetVar x
Definition: set.hh:767
Test for the atmostone propagator
Definition: distinct.cpp:53
unsigned int size(I &i)
Size of all ranges of range iterator i.
static const IntSet empty
Empty set.
Definition: int.hh:283
NodeType t
Type of node.
Definition: bool-expr.cpp:230
Computation spaces.
Definition: core.hpp:1742
virtual void post(Space &home, SetVarArray &x, IntVarArray &)
Post constraint on x.
Definition: distinct.cpp:96
Integer variable array.
Definition: int.hh:763
virtual bool solution(const SetAssignment &x) const
Test whether x is solution
Definition: distinct.cpp:59
Generate all set assignments.
Definition: set.hh:142
@ SOT_INTER
Intersection
Definition: set.hh:663
Gecode toplevel namespace
void atmostOne(Home home, const SetVarArgs &xa, unsigned int c)
Definition: distinct.cpp:41
Integer sets.
Definition: int.hh:174
@ SRT_EQ
Equality ( )
Definition: set.hh:644
Range iterator for computing intersection (binary)
Set variables
Definition: set.hh:127
Base class for tests with set constraints
Definition: set.hh:273
AtmostOne _atmostone("Distinct::AtmostOne")
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVal n)
Propagates .
Definition: rel.cpp:43
Propagator for negated equality
Definition: rel.hh:268
General test support.
Definition: afc.cpp:39
Range iterator producing subsets of an IntSet.
Definition: set.hh:99
Set variable array
Definition: set.hh:570
Gecode::IntArgs i({1, 2, 3, 4})
AtmostOne(const char *t)
Create and register test.
Definition: distinct.cpp:56