\returns a vector expression of the \a i -th column, * only the meaningful part is returned. * \warning the internal storage must be column majo

\returns the row index of the current coefficient.

Clear any existing decomposition * \sa rankUpdate(w,sigma) */

\brief Returns the x-translation by value. **/

\brief Returns the y-translation by value. **/

\returns the value of the current coefficient.

\returns a read-only view of the stored coefficients as a 1D array expression. * * \warning this method is for \b compressed \b storage \b only,

\brief Reports whether previous computation was successful. * * \returns \c Success if computation was successful, * \c NumericalIss

Return the elapsed time in seconds between the last start/stop pair */

\returns a const pointer to the array of the starting positions of the inner vectors. * This function is aimed at interoperability with other libra

\brief Give the number of columns. */