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bab.hpp
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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  * Contributing authors:
7  * Guido Tack <tack@gecode.org>
8  *
9  * Copyright:
10  * Christian Schulte, 2004
11  * Guido Tack, 2004
12  *
13  * Last modified:
14  * $Date: 2013-07-11 12:30:18 +0200 (Thu, 11 Jul 2013) $ by $Author: schulte $
15  * $Revision: 13840 $
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41 
42 namespace Gecode {
43 
44  namespace Search {
46  GECODE_SEARCH_EXPORT Engine* bab(Space* s, const Options& o);
47  }
48 
49  template<class T>
51  BAB<T>::BAB(T* s, const Search::Options& o)
52  : EngineBase(Search::bab(s,o)) {}
53 
54  template<class T>
55  forceinline T*
56  BAB<T>::next(void) {
57  return dynamic_cast<T*>(e->next());
58  }
59 
60  template<class T>
62  BAB<T>::statistics(void) const {
63  return e->statistics();
64  }
65 
66  template<class T>
67  forceinline bool
68  BAB<T>::stopped(void) const {
69  return e->stopped();
70  }
71 
72  template<class T>
75  return e->nogoods();
76  }
77 
78 
79  template<class T>
80  T*
81  bab(T* s, const Search::Options& o) {
82  BAB<T> b(s,o);
83  T* l = NULL;
84  while (T* n = b.next()) {
85  delete l; l = n;
86  }
87  return l;
88  }
89 
90 }
91 
92 // STATISTICS: search-other
NNF * l
Left subtree.
Definition: bool-expr.cpp:244
Search engine statistics
Definition: search.hh:136
#define GECODE_SEARCH_EXPORT
Definition: search.hh:63
Search engine options
Definition: search.hh:204
Engine * bab(Space *s, const Options &o)
Create branch and bound engine.
Definition: bab.cpp:48
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:238
Depth-first branch-and-bound search engine.
Definition: search.hh:530
T * bab(T *s, const Search::Options &o)
Perform depth-first branch-and-bound search for subclass T of space s and options o...
Definition: bab.hpp:81
BAB(T *s, const Search::Options &o=Search::Options::def)
Initialize engine for space s and options o.
Definition: bab.hpp:51
bool stopped(void) const
Check whether engine has been stopped.
Definition: bab.hpp:68
No-goods recorded from restarts.
Definition: core.hpp:1240
#define forceinline
Definition: config.hpp:132
Search::Statistics statistics(void) const
Return statistics.
Definition: bab.hpp:62
NoGoods & nogoods(void)
Return no-goods.
Definition: bab.hpp:74
Base-class for search engines.
Definition: search.hh:468
struct Gecode::@518::NNF::@57::@58 b
For binary nodes (and, or, eqv)
Gecode toplevel namespace
T * next(void)
Return next better solution (NULL, if none exists or search has been stopped)
Definition: bab.hpp:56