nag_sparse_nsym_basic_diagnostic (f11bfc) is the third in a suite of three functions for the iterative solution of a real general (nonsymmetric) system of simultaneous linear equations (see Golub and Van Loan (1996)
). nag_sparse_nsym_basic_diagnostic (f11bfc) returns information about the computations during an iteration and/or after this has been completed. The first function of the suite, nag_sparse_nsym_basic_setup (f11bdc)
, is a setup function; the second function, nag_sparse_nsym_basic_solver (f11bec)
, is the iterative solver itself.
These three functions are suitable for the solution of large sparse general (nonsymmetric) systems of equations.
nag_sparse_nsym_basic_diagnostic (f11bfc) returns information about the solution process. It can be called either during a monitoring step of nag_sparse_nsym_basic_solver (f11bec)
or after nag_sparse_nsym_basic_solver (f11bec)
has completed its tasks. Calling nag_sparse_nsym_basic_diagnostic (f11bfc) at any other time will result in an error condition being raised.
See Section 10
in nag_sparse_nsym_basic_setup (f11bdc).