Gecode::Int::Rel::Lex< View > Class Template Reference
[Integer propagators]
#include <rel.hh>
Inherits Gecode::NaryPropagator< ViewTuple< View, 2 >, PC_INT_BND >.
Detailed Description
template<class View>
class Gecode::Int::Rel::Lex< View >
Lexical ordering propagator.
The propagator uses the algorithm (and also the automaton) from: Mats Carlsson, Nicolas Beldiceanu, Revisiting the Lexicographic Ordering Constraint. SICS Technical Report T2002:17, SICS, Sweden, 2002.
It deviates in the following two main aspects:
- Assigned variables are eagerly eliminated This yields the same incremental behaviour with respect to states 1 and 2 of the automaton. With respect to the values of q and r in the report:
- q is always 0 after elimination
- r is always 1 after elimination
- It is not incremental with respect to states 3 and 4 as no propagation event information is available
Requires
#include "gecode/int/rel.hh"
Definition at line 467 of file rel.hh.
Public Member Functions | |
| virtual Actor * | copy (Space *home, bool share) |
| Copy propagator during cloning. | |
| virtual ExecStatus | propagate (Space *home) |
| Perform propagation. | |
Static Public Member Functions | |
| static ExecStatus | post (Space *home, ViewArray< ViewTuple< View, 2 > > &xy, bool strict) |
| Post propagator for lexical order on xy. | |
Protected Member Functions | |
| Lex (Space *home, bool share, Lex &p) | |
| Constructor for cloning p. | |
| Lex (Space *home, ViewArray< ViewTuple< View, 2 > > &xy, bool strict) | |
| Constructor for posting. | |
Protected Attributes | |
| bool | strict |
| Determines whether propagator is strict or not. | |
Constructor & Destructor Documentation
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Constructor for cloning p.
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Constructor for posting.
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Member Function Documentation
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Copy propagator during cloning.
Implements Gecode::Actor. |
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Perform propagation.
Implements Gecode::Propagator. |
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Post propagator for lexical order on xy.
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Member Data Documentation
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Determines whether propagator is strict or not.
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The documentation for this class was generated from the following files:
- gecode/int/rel.hh (Revision: 3579)
- gecode/int/rel/lex.icc (Revision: 3512)