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It is also possible call other Octave functions from within a mex-file
using mexCallMATLAB. An example of the use of
mexCallMATLAB can be see in the example below
/*
Copyright (C) 2006, 2007 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later
version.
Octave is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with Octave; see the file COPYING. If not,
see <http://www.gnu.org/licenses/>.
*/
#include "mex.h"
void
mexFunction (int nlhs, mxArray* plhs[], int nrhs,
const mxArray* prhs[])
{
char *str;
mexPrintf ("Hello, World!\n");
mexPrintf ("I have %d inputs and %d outputs\n", nrhs,
nlhs);
if (nrhs < 1 || ! mxIsString (prhs[0]))
mexErrMsgTxt ("function name expected");
str = mxArrayToString (prhs[0]);
mexPrintf ("I'm going to call the function %s\n", str);
mexCallMATLAB (nlhs, plhs, nrhs-1, prhs+1, str);
mxFree (str);
}
If this code is in the file myfeval.c, and is compiled to myfeval.mex, then an example of its use is
myfeval("sin", 1)
a = myfeval("sin", 1)
=> Hello, World!
I have 2 inputs and 1 outputs
I'm going to call the interpreter function sin
a = 0.84147
Note that it is not possible to use function handles or inline functions within a mex-file.