This function uses the following arguments for output:
D - On output, D is overwritten with the partial result of the factorization.
U - On output, U is overwritten with the partial result of the factorization.
L - On output, L is overwritten with the partial result of the factorization.
factors - Upon completion, factors points to the internal data structure containing the factorization results.
ier (Fortran only) - When called from a Fortran program, this function returns error status in ier.