new octave_value::cell_value method with optional error message * ov.h, ov.cc (octave_value::cell_value): New method. * ov-base.h, ov-base.cc (octave_base_value::cell_value): New default method. * ov-cell.h, ov-cell.cc (octave_cell::cell_value): New method.

#include "mex.h"

void
mexFunction (int nlhs, mxArray *plhs[],
             int nrhs, const mxArray *prhs[])
{
  mexPrintf ("Hello, World!\n");

  mexPrintf ("I have %d inputs and %d outputs\n", nrhs, nlhs);
}