permlib  0.2.9
Library for permutation computations
lex_smaller_image_search.h
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31 
32 
33 #ifndef CLASSIC_LEXSMALLERIMAGE_SEARCH_H_
34 #define CLASSIC_LEXSMALLERIMAGE_SEARCH_H_
35 
36 #include <permlib/search/classic/backtrack_search.h>
37 #include <permlib/predicate/lex_smaller_image_predicate.h>
38 
39 namespace permlib {
40 namespace classic {
41 
43 
46 template<class BSGSIN,class TRANSRET>
47 class LexSmallerImageSearch : public BacktrackSearch<BSGSIN,TRANSRET> {
48 public:
49  typedef typename BacktrackSearch<BSGSIN,TRANSRET>::PERM PERM;
50 
52 
56  LexSmallerImageSearch(const BSGSIN& bsgs, unsigned int pruningLevelDCM);
57 
59 
65  template<class InputIteratorZ, class InputIteratorO>
66  void construct(InputIteratorZ zerosBegin, InputIteratorZ zerosEnd, InputIteratorO onesBegin, InputIteratorO onesEnd);
67 };
68 
69 template<class BSGSIN,class TRANSRET>
70 LexSmallerImageSearch<BSGSIN,TRANSRET>::LexSmallerImageSearch(const BSGSIN& bsgs, unsigned int pruningLevelDCM)
71  : BacktrackSearch<BSGSIN,TRANSRET>(bsgs, pruningLevelDCM, false, true)
72 { }
73 
74 template<class BSGSIN,class TRANSRET>
75 template<class InputIteratorZ, class InputIteratorO>
76 void LexSmallerImageSearch<BSGSIN,TRANSRET>::construct(InputIteratorZ zerosBegin, InputIteratorZ zerosEnd, InputIteratorO onesBegin, InputIteratorO onesEnd) {
77  LexSmallerImagePredicate<PERM>* lexminPred = new LexSmallerImagePredicate<PERM>(this->m_bsgs.n, zerosBegin, zerosEnd, onesBegin, onesEnd);
78 
79  this->m_limitLevel = lexminPred->limit();
80  this->m_limitBase = this->m_limitLevel;
81  this->m_limitInitialized = true;
82 
84 }
85 
86 }
87 }
88 
89 #endif // -- CLASSIC_LEXSMALLERIMAGE_SEARCH_H_
coset-type predicate for group elements that map one set of zeros and ones to a lex-smaller set (w...
Definition: lex_smaller_image_predicate.h:49
searching in a group with classical backtracking
Definition: backtrack_search.h:50
virtual unsigned int limit() const
limit of recursion depth in backtrack search
Definition: lex_smaller_image_predicate.h:126
coset representative search for a lex-smaller set images
Definition: lex_smaller_image_search.h:47
void construct(SubgroupPredicate< PERM > *pred, bool addPredRefinement)
initializes the search
Definition: backtrack_search.h:188
LexSmallerImageSearch(const BSGSIN &bsgs, unsigned int pruningLevelDCM)
constructor
Definition: lex_smaller_image_search.h:70
void construct(InputIteratorZ zerosBegin, InputIteratorZ zerosEnd, InputIteratorO onesBegin, InputIteratorO onesEnd)
initializes search
Definition: lex_smaller_image_search.h:76
Definition: abstract_bsgs.h:49