\returns a pointer to the SPQR workspace */

Free all the data allocated by Pastix

TODO(phli): attempt to speed this up. The integer divisions and modulo are slow. See CL/76180724 comments for more ideas.

\sa MatrixBase::coeff() * \warning the coordinates must fit into the referenced triangular part */

\returns the coefficient value at given position \a row, \a col * This operation involes a log(rho*outer_size) binary search. */

! * This overrides ReturnByValue::coeff because this function is * efficient enough. */

\returns the number of columns */

比较函数（模拟比较操作）

Resizes the matrix to a \a rows x \a cols matrix leaving old values untouched. * * If the sizes of the matrix are decreased, then the matr

this function takes a line that may contain a name and/or email address, and returns just the name, while fixing the "bad cases".

parses hg churn output to generate a contributors map.

count. * Return the number of active pointers (i.e, pointers that * have been malloc but not freed). */

const version of rbegin() */

const version of rend() */

\returns a const pointer to the column major internal matrix */

This is used to deallocate the device pointer. p is used as a key inside the map to find the device buffer and delete it.

Detach previously attached buffer