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

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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
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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 double handle;
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8 char property[256];
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9
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10 if (nrhs < 2 || nrhs > 3)
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11 mexErrMsgTxt ("incorrect number of arguments");
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12 if (! mxIsDouble (prhs[0]))
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13 mexErrMsgTxt ("handle must be a double scalar");
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14 if (! mxIsChar (prhs[1]))
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15 mexErrMsgTxt ("property must be a string");
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16
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17 handle = mxGetScalar (prhs[0]);
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18 mxGetString (prhs[1], property, 256);
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19 plhs[0] = mxDuplicateArray (mexGet (handle, property));
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20
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21 if (nrhs == 3)
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22 if (mexSet (handle, property, mxDuplicateArray (prhs[2])))
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23 mexErrMsgTxt ("failed to set property");
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24 }