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efficient swap operation for vector and matrix classes

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Jiri Pittner
2021-06-29 14:39:04 +02:00
parent 3288e51fba
commit 9d0249cdc4
5 changed files with 57 additions and 0 deletions
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11
sparsemat.h
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@@ -146,6 +146,17 @@ public:
unsigned int sort(int type) const;
inline void add(const SPMatindex n, const SPMatindex m, const T elem) {matel<T> *ltmp= new matel<T>; ltmp->next=list; list=ltmp; list->row=n; list->col=m; list->elem=elem;}
void addsafe(const SPMatindex n, const SPMatindex m, const T elem);
void swap(SparseMat &rhs) //more efficient swap than via tmp and constructors and operator=
{
SPMatindex tmpnn=nn; nn=rhs.nn; rhs.nn=tmpnn;
SPMatindex tmpmm=mm; mm=rhs.mm; rhs.mm=tmpmm;
int *tmpcount=count; count=rhs.count; rhs.count=tmpcount;
bool tmpsymmetric=symmetric; symmetric=rhs.symmetric; rhs.symmetric=tmpsymmetric;
int tmpnonzero=nonzero; nonzero=rhs.nonzero; rhs.nonzero=tmpnonzero;
matel<T> *tmplist=list; list=rhs.list; rhs.list=tmplist;
matel<T> **tmprowsorted=rowsorted; rowsorted=rhs.rowsorted; rhs.rowsorted=tmprowsorted;
matel<T> **tmpcolsorted=colsorted; colsorted=rhs.colsorted; rhs.colsorted=tmpcolsorted;
}
};
}//namespace