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purge.hpp
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10  * $Date: 2011-07-12 18:03:22 +0200 (Tue, 12 Jul 2011) $ by $Author: tack $
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37 
38 namespace Gecode { namespace Int {
39 
40  template<class OptTask, PropCond pc>
43  int n=t.size();
44  for (int i=n; i--; )
45  if (t[i].excluded()) {
46  t[i].cancel(home,p,pc); t[i]=t[--n];
47  }
48  t.size(n);
49 
50  return (t.size() < 2) ? home.ES_SUBSUMED(p) : ES_OK;
51  }
52 
53  template<class OptTask, PropCond pc, class Cap>
56  int n=t.size();
57  for (int i=n; i--; )
58  if (t[i].excluded()) {
59  t[i].cancel(home,p,pc); t[i]=t[--n];
60  }
61  t.size(n);
62  if (t.size() == 1) {
63  if (t[0].mandatory())
64  GECODE_ME_CHECK(c.gq(home, t[0].c()));
65  else if (c.min() < t[0].c())
66  return ES_OK;
67  }
68 
69  return (t.size() < 2) ? home.ES_SUBSUMED(p) : ES_OK;
70  }
71 
72 }}
73 
74 // STATISTICS: int-prop
NodeType t
Type of node.
Definition: bool-expr.cpp:234
ExecStatus ES_SUBSUMED(Propagator &p)
Definition: core.hpp:2973
Base-class for propagators.
Definition: core.hpp:755
Computation spaces.
Definition: core.hpp:1362
Gecode::FloatVal c(-8, 8)
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:236
Gecode::IntArgs i(4, 1, 2, 3, 4)
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:238
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition: macros.hpp:45
ExecStatus
Definition: core.hpp:523
void cancel(Space &home, Propagator &p, PropCond pc=Int::PC_INT_BND)
Cancel subscription of propagator p for all tasks.
Definition: array.hpp:98
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:67
Execution is okay.
Definition: core.hpp:527
Gecode toplevel namespace
ExecStatus purge(Space &home, Propagator &p, TaskArray< OptTask > &t)
Purge optional tasks that are excluded and possibly rewrite propagator.
Definition: purge.hpp:42