Use of fsolve

[John W. Eaton]

On  1-Oct-1998, Daniel Tourde <address@hidden> wrote:

| Then my question is the following: How can I change the iteration limit
| within fsolve.

There is currently no way to do that without changing the source.  To
gain more control over fsolve you would need to modify the code in
liboctave/NLEqn.cc to use hybrj instead of hybrj1 (see the
corresponding .f files in the libcruft/minpack directory).  Once the
C++ code in liboctave has been modified to allow control over the
iteration limit, it should be easy to modify fsolve.

| How can I improve the precision of Octave in its
| globality ? In a word, what is the best way to get rid of flag 4 and
| flag 3 ?

I've never been too impressed with Minpack's ability to solve sets of
nonlinear equations reliably.  Does anyone know of something better
that is also freely redistributable?

Thanks,

jwe