Gets a row.

Get the value of the row at a given index from the matrix (whatever the StorageFormat of the matrix).

Note

For row-matrices, it is equivalent to operator[], for column-matrices a traversal of the matrix is required (in \(\mathcal O(n)\)).

Warning

The matrix will perform boundary check.

Parameters

matrix	The matrix considered.
index	The coefficient index.

Returns

The row at given index.

Friends
template<typename _CT >
Sparse_chain< _CT, ROW >	get_row (const Sparse_matrix< _CT, COLUMN > &matrix, size_t index)
	Gets a row from a COLUMN matrix.
template<typename _CT >
Sparse_chain< _CT, ROW >	get_row (const Sparse_matrix< _CT, ROW > &matrix, size_t index)
	Gets a row from a ROW matrix.