/usr/share/doc/liboctave-dev/examples/mystring.c is in liboctave-dev 4.0.0-3ubuntu9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | #include <string.h>
#include "mex.h"
void
mexFunction (int nlhs, mxArray *plhs[],
int nrhs, const mxArray *prhs[])
{
mwSize m, n;
mwIndex i, j;
mxChar *pi, *po;
if (nrhs != 1 || ! mxIsChar (prhs[0])
|| mxGetNumberOfDimensions (prhs[0]) > 2)
mexErrMsgTxt ("ARG1 must be a char matrix");
m = mxGetM (prhs[0]);
n = mxGetN (prhs[0]);
pi = mxGetChars (prhs[0]);
plhs[0] = mxCreateNumericMatrix (m, n, mxCHAR_CLASS, mxREAL);
po = mxGetChars (plhs[0]);
for (j = 0; j < n; j++)
for (i = 0; i < m; i++)
po[j*m + m - 1 - i] = pi[j*m + i];
}
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