chfact sparse Cholesky factorization spcho=chfact(A) A square symmetric positive sparse matrix spcho list containing the Cholesky factors in coded form spcho=chfact(A) computes the sparse Cholesky factors of sparse matrix A, assumed symmetric positive definite. This function is based on the Ng-Peyton programs (ORNL). See the Fortran programs for a complete description of the variables in spcho. This function is to be used with chsolve. chsolve sparse lufact luget spchol