matrix_automorphism_search.h

// ---------------------------------------------------------------------------
//
//  This file is part of PermLib.
//
// Copyright (c) 2009-2011 Thomas Rehn <thomas@carmen76.de>
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#ifndef PARTITION_MATRIX_AUTOMORPHISM_SEARCH_H_
#define PARTITION_MATRIX_AUTOMORPHISM_SEARCH_H_
 
#include <permlib/search/partition/r_base.h>
#include <permlib/search/partition/matrix_refinement1.h>
#include <permlib/search/partition/refinement_family.h>
#include <permlib/predicate/matrix_automorphism_predicate.h>
 
namespace permlib {
namespace partition {

template<class BSGSIN,class TRANSRET>
class MatrixAutomorphismSearch : public RBase<BSGSIN,TRANSRET> {
public:
        typedef typename RBase<BSGSIN,TRANSRET>::PERM PERM;
        

        MatrixAutomorphismSearch(const BSGSIN& bsgs, unsigned int pruningLevelDCM);
        

        template<class MATRIX, class Iterator>
        void construct(const MATRIX& matrix, Iterator initialPartitionBegin, Iterator initialPartitionEnd);
        

        template<class MATRIX>
        void construct(const MATRIX& matrix) { construct<MATRIX, unsigned int*>(matrix, 0, 0); }
};
 
template<class BSGSIN,class TRANSRET>
MatrixAutomorphismSearch<BSGSIN,TRANSRET>::MatrixAutomorphismSearch(const BSGSIN& bsgs, unsigned int pruningLevelDCM) 
        : RBase<BSGSIN,TRANSRET>(bsgs, pruningLevelDCM)
{ }
 
template<class BSGSIN,class TRANSRET>
template<class MATRIX, class Iterator>
void MatrixAutomorphismSearch<BSGSIN,TRANSRET>::construct(const MATRIX& matrix, Iterator initialPartitionBegin, Iterator initialPartitionEnd) {
        MatrixAutomorphismPredicate<PERM,MATRIX>* matrixPred = new MatrixAutomorphismPredicate<PERM,MATRIX>(matrix);
        
        if (initialPartitionBegin != initialPartitionEnd) {
                // set up partitions such that the elements of initialPartition will be mapped onto itself
                RBase<BSGSIN,TRANSRET>::m_partition.intersect(initialPartitionBegin, initialPartitionEnd, 0);
                RBase<BSGSIN,TRANSRET>::m_partition2.intersect(initialPartitionBegin, initialPartitionEnd, 0);
        }
        
        MatrixRefinement1<PERM,MATRIX> matRef(RBase<BSGSIN,TRANSRET>::m_bsgs.n, matrix);
        matRef.initializeAndApply(RBase<BSGSIN,TRANSRET>::m_partition);
        PERM empty(RBase<BSGSIN,TRANSRET>::m_bsgs.n);
        matRef.apply2(RBase<BSGSIN,TRANSRET>::m_partition2, empty);
        
        RBase<BSGSIN,TRANSRET>::construct(matrixPred, 
                new MatrixAutomorphismRefinementFamily<PERM,MATRIX>(RBase<BSGSIN,TRANSRET>::m_bsgs.n, matrix));
}
 
}
}
 
#endif // -- PARTITION_MATRIX_AUTOMORPHISM_SEARCH_H_