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application of a permutation on sparsemat

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Jiri Pittner
2021-06-24 17:16:10 +02:00
parent 9ce8e74e19
commit 4c1aa07acf
3 changed files with 94 additions and 19 deletions
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12
sparsemat.h
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@@ -124,9 +124,15 @@ public:
void incsize(const SPMatindex n, const SPMatindex m); //increase size without destroying the data
void transposeme();
const SparseMat transpose() const;
void permuteindices(const NRVec<SPMatindex> &p);
void permuterows(const NRVec<SPMatindex> &p);
void permutecolumns(const NRVec<SPMatindex> &p);
void permuteindices(const NRVec<SPMatindex> &p); //for backward compatibility, indices from 0
void permuterows(const NRVec<SPMatindex> &p); //for backward compatibility, indices from 0
void permutecolumns(const NRVec<SPMatindex> &p); //for backward compatibility, indices from 0
void permuteme_rows(const NRPerm<int> &p, const bool inverse=false); //indexed from 1
void permuteme_cols(const NRPerm<int> &p, const bool inverse=false); //indexed from 1
void permuteme_both(const NRPerm<int> &p, const NRPerm<int> &q, const bool inverse=false); //indexed from 1
const SparseMat permuted_rows(const NRPerm<int> &p, const bool inverse=false) const {SparseMat a(*this); a.permuteme_rows(p,inverse); return a;};
const SparseMat permuted_cols(const NRPerm<int> &p, const bool inverse=false) const {SparseMat a(*this); a.permuteme_cols(p,inverse); return a;};
const SparseMat permuted_both(const NRPerm<int> &p, const NRPerm<int> &q, const bool inverse=false) const {SparseMat a(*this); a.permuteme_both(p,q,inverse); return a;};
inline void setsymmetric() {if(nn!=mm) laerror("non-square cannot be symmetric"); symmetric=1;}
inline void defineunsymmetric() {symmetric=0;} //just define and do nothing with it
void setunsymmetric();//unwind the matrix assuming it was indeed symmetric