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

\returns the number of coefficients, which is rows()*cols(). * \sa rows(), cols(), SizeAtCompileTime. */

\returns the row index of the current coefficient.

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

\internal */

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

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

\returns the value of the current coefficient.

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

\returns a view of the upper triangular matrix U */

Resizes the matrix to a \a rows x \a cols matrix and initializes it to zero * \sa resizeNonZeros(Index), reserve(), setZero() */

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

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

Removes all non zeros */

Return the best elapsed time in seconds */