view examples/code/myprop.c @ 20297:5c42ff6f0eb1 stable

Clean up MEX example code. * myfeval.c: Use mxIsChar rather than deprecated mxIsString. * mypow2.c: Validate that input is a double matrix. * myprop.c: Use space after '!' operator to conform to Octave conventions. * myset.c: Use mexPutVariable instead of missing mxSetName and deprecated mexPutArray. Find existing variable EITHER in global workspace OR in caller workspace. Don't check both. * mystruct.c: Clarify input validation message.
author Rik <rik@octave.org>
date Mon, 15 Jun 2015 10:24:13 -0700
parents c8240a60dd01
children
line wrap: on
line source

#include "mex.h"

void
mexFunction (int nlhs, mxArray* plhs[],
             int nrhs, const mxArray* prhs[])
{
  double handle;
  char property[256];

  if (nrhs < 2 || nrhs > 3)
    mexErrMsgTxt ("incorrect number of arguments");
  if (! mxIsDouble (prhs[0]))
    mexErrMsgTxt ("handle must be a double scalar");
  if (! mxIsChar (prhs[1]))
    mexErrMsgTxt ("property must be a string");

  handle = mxGetScalar (prhs[0]);
  mxGetString (prhs[1], property, 256);
  plhs[0] = mxDuplicateArray (mexGet (handle, property));

  if (nrhs == 3)
    if (mexSet (handle, property, mxDuplicateArray (prhs[2])))
      mexErrMsgTxt ("failed to set property");
}