RE: How to call existing .oct files from C++?

[Charles David Hill]

Thankyou to Soren and everyone who replied to my post,

Yes, I've read the appendix and it's definitely good for me to get started, and that is what I want to do - however if possible I don't want to have the extra overhead of calling feval() and invoking the interpreter. Is there any way that I can link directly from C++ to existing .oct files? At the moment I have used the octave source code to compile it to a .o file, and linked to that in but that seems like a kludge on my part.

My code wants to look something like this (with type checking and error checking to come):

======

DEFUN_DLD (tensor, args,  nargout, "Tensor product")
{
        // Create a tensor product of many possible values

        // Return value
        octave_value_list retvalue;

        // Get the number of arguments
        int numMatrices = args.length();
       
        // Get the first argument
        ComplexMatrix a (args(0).complex_matrix_value());
        numMatrices--;
        ComplexMatrix b, c;

        // Loop over the inputs
        while (numMatrices > 0) {
                b = (ComplexMatrix) args(numMatrices).complex_matrix_value();

                if (!error_state) {
                        ComplexMatrix c;
                        kron (a, b, c);
                       
                        a = c;
                        numMatrices--;
                }
        }

        retvalue(0) = a;
        return retvalue;
}

======

My system is Ubuntu 7.10, using gcc 4.1.3, octave 2.9.12 (using the same version of mkoctfile to C++ compile files for use with octave). Everything so far is going pretty well - I'm just wondering if linking against .oct files is possible.

Thanks again for all your help,

Charles.