From octave-sources-request at bevo dot che dot wisc dot edu Mon Sep 16 07:17:54 2002
Subject: Re: Calling OCT function inside C++ Code
From: Paul Kienzle <pkienzle at jazz dot ncnr dot nist dot gov>
To: giuseppe-ast dot visalli at st dot com, octave-sources@bevo.che.wisc.edu
Date: Mon, 16 Sep 2002 08:17:18 -0400

On Mon, Sep 16, 2002 at 09:51:05AM +0200, giuseppe-ast dot visalli at st dot com wrote:
> Hi,
> 
> Trying to develope OCT shared library functions, I need to call a
> function available as shared library (OCT) inside my C++ source code.
> 
> Can I declare the function as "extern" ? , If yes How ?
> 
> What Happen If I wish to execute in my C++ code a .m file ?
> 
> What is the syntax ?

The function you want is feval:

	#include <oct/toplev.h>
	octave_value_list retval = feval(fname, args, nargout);

fname is a string, args is an octave_value_list and nargout is an integer
saying how many return arguments you want.
	
> 
> I am trying to translate functions mostly compatible with Matlab
> Communication ToolBox + New Functions.

Assuming it is mex files you are trying to translate, you could try 
linking against mex.o in octave-forge/extra/mex (http://octave.sf.net).
It won't handle the full mex api by any stretch, but it is a start.

Paul Kienzle
pkienzle at users dot sf dot net