* Set appropriate pointers for the lower triangular supernodal matrix * These infos are available at the end of the numerical factorization

\returns the lengths of the sides of the bounding box. * Note that this function does not get the same * result for integral or floating scala

\returns the number of sub diagonals */

\returns the number of super diagonals */

To use for operations with the transpose of Q

Returns the transposed transformation */

Get the VAC this cell belongs to, and the cell's id

\returns the coefficients of the diagonal matrix D */