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annotate examples/mystring.c @ 8924:3c3cbe8f18e0 ss-3-1-54

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author John W. Eaton <jwe@octave.org>
date Sat, 07 Mar 2009 13:28:03 -0500
parents 503001863427
children 4295d634797d
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1 /*
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2
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3 Copyright (C) 2006, 2007 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or
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8 modify it under the terms of the GNU General Public License
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9 as published by the Free Software Foundation; either
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10 version 3 of the License, or (at your option) any later
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11 version.
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12
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13 Octave is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty
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15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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16 See the GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public
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19 License along with Octave; see the file COPYING. If not,
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20 see <http://www.gnu.org/licenses/>.
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21
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22 */
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23
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24 #include <string.h>
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25 #include "mex.h"
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26
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27 void
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28 mexFunction (int nlhs, mxArray *plhs[], int nrhs,
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29 const mxArray *prhs[])
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30 {
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31 mwIndex i, j;
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32 mwSize m, n;
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33 mxChar *pi, *po;
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34
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35 if (nrhs != 1 || ! mxIsChar (prhs[0]) ||
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36 mxGetNumberOfDimensions (prhs[0]) > 2)
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37 mexErrMsgTxt ("expecting char matrix");
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38
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39 m = mxGetM (prhs[0]);
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40 n = mxGetN (prhs[0]);
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41 pi = mxGetChars (prhs[0]);
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42 plhs[0] = mxCreateNumericMatrix (m, n, mxCHAR_CLASS,
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43 mxREAL);
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44 po = mxGetChars (plhs[0]);
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45
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46 for (j = 0; j < n; j++)
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47 for (i = 0; i < m; i++)
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48 po [j*m + m - 1 - i] = pi [j*m + i];
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49 }