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link-single.cpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
5  *
6  * Copyright:
7  * Christian Schulte, 2007
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10  * $Date: 2010-03-04 03:32:21 +1100 (Thu, 04 Mar 2010) $ by $Author: schulte $
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37 
38 #include <gecode/int/channel.hh>
39 
40 namespace Gecode { namespace Int { namespace Channel {
41 
43  LinkSingle::LinkSingle(Space& home, bool share, LinkSingle& p)
44  : MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL>
45  (home,share,p) {}
46 
47  Actor*
48  LinkSingle::copy(Space& home, bool share) {
49  return new (home) LinkSingle(home,share,*this);
50  }
51 
52  PropCost
53  LinkSingle::cost(const Space&, const ModEventDelta&) const {
55  }
56 
59  if (x0.zero()) {
60  GECODE_ME_CHECK(x1.eq(home,0));
61  } else if (x0.one()) {
62  GECODE_ME_CHECK(x1.eq(home,1));
63  } else {
64  assert(x0.none() && x1.assigned());
65  if (x1.val() == 0) {
67  } else {
68  assert(x1.val() == 1);
70  }
71  }
72  return home.ES_SUBSUMED(*this);
73  }
74 
75 }}}
76 
77 // STATISTICS: int-prop