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Use of fsolve

From: John W. Eaton
Subject: Use of fsolve
Date: Thu, 1 Oct 1998 22:52:38 -0500 (CDT)

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/ 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?



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