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annotate examples/code/myfeval.c @ 20387:4951982f8a2c stable

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intro.txi: Improve documentation in introductory chapter. * intro.txi: Use 'diary' instead of 'cd' as an example of a command. Format sample function docstring to match modern usage. Improve phrasing of a few sentences.
author Rik <rik@octave.org>
date Mon, 11 May 2015 22:08:26 -0700
parents c8240a60dd01
children 5c42ff6f0eb1
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1 #include "mex.h"
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2
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3 void
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4 mexFunction (int nlhs, mxArray* plhs[],
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5 int nrhs, const mxArray* prhs[])
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6 {
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7 char *str;
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8
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9 mexPrintf ("Starting file myfeval.mex\n");
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10
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11 mexPrintf ("I have %d inputs and %d outputs\n", nrhs, nlhs);
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12
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13 if (nrhs < 1 || ! mxIsString (prhs[0]))
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14 mexErrMsgTxt ("ARG1 must be a function name");
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16 str = mxArrayToString (prhs[0]);
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18 mexPrintf ("I'm going to call the function %s\n", str);
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20 if (nlhs == 0)
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21 nlhs = 1; // Octave's automatic 'ans' variable
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22
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23 /* Cast prhs just to get rid of 'const' qualifier and stop compile warning */
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24 mexCallMATLAB (nlhs, plhs, nrhs-1, (mxArray**)prhs+1, str);
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26 mxFree (str);
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27 }