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bab.hpp
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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7  * Guido Tack <tack@gecode.org>
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10  * Christian Schulte, 2004
11  * Guido Tack, 2004
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14  * $Date: 2016-04-19 17:19:45 +0200 (Tue, 19 Apr 2016) $ by $Author: schulte $
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41 
42 namespace Gecode { namespace Search {
43 
45  GECODE_SEARCH_EXPORT Engine* bab(Space* s, const Options& o);
46 
48  template<class T>
49  class BabBuilder : public Builder {
50  using Builder::opt;
51  public:
53  BabBuilder(const Options& opt);
55  virtual Engine* operator() (Space* s) const;
56  };
57 
58  template<class T>
59  inline
61  : Builder(opt,BAB<T>::best) {}
62 
63  template<class T>
64  Engine*
66  return build<T,BAB>(s,opt);
67  }
68 
69 }}
70 
71 namespace Gecode {
72 
73  template<class T>
74  inline
75  BAB<T>::BAB(T* s, const Search::Options& o)
76  : Search::Base<T>(Search::bab(s,o)) {}
77 
78  template<class T>
79  inline T*
80  bab(T* s, const Search::Options& o) {
81  BAB<T> b(s,o);
82  T* l = NULL;
83  while (T* n = b.next()) {
84  delete l; l = n;
85  }
86  return l;
87  }
88 
89  template<class T>
90  SEB
91  bab(const Search::Options& o) {
92  return new Search::BabBuilder<T>(o);
93  }
94 
95 }
96 
97 // STATISTICS: search-other
Search engine implementation interface
Definition: search.hh:601
NNF * l
Left subtree.
Definition: bool-expr.cpp:244
#define GECODE_SEARCH_EXPORT
Definition: search.hh:63
Search engine options
Definition: search.hh:446
A class for building search engines.
Definition: search.hh:667
Options opt
Stored and already expanded options.
Definition: search.hh:670
Engine * bab(Space *s, const Options &o)
Create branch and bound engine.
Definition: bab.cpp:48
A BAB engine builder.
Definition: bab.hpp:49
Computation spaces.
Definition: core.hpp:1748
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:238
Options opt
The options.
Definition: test.cpp:101
Depth-first branch-and-bound search engine.
Definition: search.hh:773
struct Gecode::@579::NNF::@61::@62 b
For binary nodes (and, or, eqv)
Search::Builder * SEB
Type for a search engine builder.
Definition: search.hh:695
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:80
BAB(T *s, const Search::Options &o=Search::Options::def)
Initialize engine for space s and options o.
Definition: bab.hpp:75
BabBuilder(const Options &opt)
The constructor.
Definition: bab.hpp:60
virtual Engine * operator()(Space *s) const
The actual build function.
Definition: bab.hpp:65
Gecode toplevel namespace