1This port installs the module COLAMD of SuiteSparse. 2 3The CCOLAMD column approximate minimum degree ordering algorithm computes a 4permutation vector P such that the LU factorization of A (:,P) tends to be 5sparser than that of A. The Cholesky factorization of (A (:,P))'*(A (:,P)) will 6also tend to be sparser than that of A'*A. CSYMAMD is a symmetric minimum degree 7ordering method based on CCOLAMD, also available as a MATLAB-callable function. 8It constructs a matrix M such that M'*M has the same pattern as A, and then uses 9CCOLAMD to compute a column ordering of M. 10