delete_columns()

template<typename CoeffRing>

void SMat< CoeffRing >::delete_columns	(	size_t	i,
		size_t	j )

Definition at line 1082 of file smat.hpp.

{
  for (size_t c = i; c <= j; c++) vec_remove(columns_[c]);
  sparsevec **tmp = columns_;
  columns_ = 0;
  size_t ndeleted = j - i + 1;
  size_t orig_ncols = ncols_;
 
  initialize(nrows_, ncols_ - (j - i + 1), 0);
  for (size_t c = 0; c < i; c++) columns_[c] = tmp[c];
  for (size_t c = j + 1; c < orig_ncols; c++) columns_[c - ndeleted] = tmp[c];
 
  freemem(tmp);
}

References columns_, freemem(), initialize(), ncols_, nrows_, and vec_remove().

Referenced by MatElementaryOps< SMat< RT > >::delete_columns().