[Octave-bug-tracker] [bug #35534] fminunc: FunValCheck buggy

[Rik]

Update of bug #35534 (project octave):

                  Status:                    None => Confirmed              

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Follow-up Comment #2:

The bug is confirmed, as well as your patch that fixes it.

Looking at the documentation for fminunc
(http://www.mathworks.com/help/toolbox/optim/ug/fminunc.html) I see the
following for the FunValCheck option.


Check whether objective function values are valid. 'on' displays an error when
the objective function returns a value that is complex, Inf, or NaN. The
default 'off' displays no error.


Could you expand your patch to also detect Inf values?  The isinf() function
should be all that is required.

Also, could you add a %!test or %!assert block that exercises the new code?

Something like 


%% Test for bug #35534
%!assert (fminunc (@(x) x^2, 1, optimset ("FunValCheck", "on"), 0, eps)
%!error <non-real value> fminunc (@(x) x + i, 1, optimset ("FunValCheck",
"on"))




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