James K. Lowden wrote:
> A colleague has some Matlab code we'd like to explore porting to Octave.
> The code in question makes use of Matlabs '@' directories and operator
> overloading. We don't mind using C++ instead. The harder it is, the
> longer it will take, that's all. Could someone tell us what would be
> involved?
>
The "@" directory classes as in the Octave repository but have had
limited testing. The inferiorto and superiorto functions are also not
written yet. So I therefore see that there are two means you might go to
get this going are
1) Use the bleeding edge Octave (IE a build from the repository itself)
and use the "@" directories as is.. You'll very likely run into bugs,
but in a sense that is a good thing as known bugs can be fixed, and in
the long run that is good for everyone.
2) Write your type in C++ and do the overloading there.. There are
several examples of user types in octave-forge that can give you a guide
of how to go about that, and in particular
* The Galois field type in the comms package
* The fixed point types in the fixed package
* The symbolic type in the symbolic package
however the easiest to start with is the extra/triangular package as it
was written with the idea of showing users how to write such types.. I
include the short documentation file from this package here.
> We have worked through http://octave.sourceforge.net/coda/. It was very
> helpful, but of course it doesn't take us quite where we want to go.
> (Less helpful was
> http://www.gnu.org/software/octave/doc/interpreter/User_002ddefined-Data-Types.html#User_002ddefined-Data-Types,
> except in the negative sense.)
>
You might also want to check
http://www.gnu.org/software/octave/doc/interpreter/Dynamically-Linked-Functions.html
for information on accessing Octave's internals from C++
Regards
David
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David Bateman [EMAIL PROTECTED]
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