Re: Need some help with Oct files

[Michael Creel]

Philip Goh wrote:
> Hi there,
>
> I've been trying to get some code that I've written in Matlab as Mex  
> modules ported into Octave oct modules. I've run into a slight  
> problem that I hope people on this list would be able to help me with.
>
> I have a function that returns multiple values. i.e. it is invoked like
> [a,b,c] = myfunc(d);
>
> I haven't been able to find a way of doing this multiple return in an  
> oct file. Thus, right now, I'm putting everything into a column  
> vector, and having myfunc return that instead. It's a work around,  
> not too elegant but it works for now. Even so, I would still like to  
> know how I'd go about setting up multiple return values in oct files?
>
> cheers,
> Philip

You need to return an octave_list_value. Something like the following 
(taken from samin.cc in octave-forge):

        f_return(0) = xopt;
        f_return(1) = fopt;
        f_return(2) = converge;
        return octave_value_list(f_return);

Cheers, Michael