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annotate examples/code/mypow2.c @ 19225:c8240a60dd01

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Add penny.mat to build system. * examples/data/penny.mat: New example data file. * examples/data/Makefile.am: Automake file for new directory of example data files. * examples/Makefile.am: Change to be just a pass-through to the subdirectories code/ and data/. * examples/@FIRfilter/FIRfilter.m, examples/@FIRfilter/FIRfilter_aggregation.m, examples/@FIRfilter/display.m, examples/@FIRfilter/module.mk, examples/@FIRfilter/subsasgn.m, examples/@FIRfilter/subsref.m, examples/@polynomial/display.m, examples/@polynomial/double.m, examples/@polynomial/end.m, examples/@polynomial/get.m, examples/@polynomial/module.mk, examples/@polynomial/mtimes.m, examples/@polynomial/numel.m, examples/@polynomial/plot.m, examples/@polynomial/polynomial.m, examples/@polynomial/polynomial_superiorto.m, examples/@polynomial/polyval.m, examples/@polynomial/roots.m, examples/@polynomial/set.m, examples/@polynomial/subsasgn.m, examples/@polynomial/subsref.m, examples/COPYING, examples/addtwomatrices.cc, examples/celldemo.cc, examples/embedded.cc, examples/fortrandemo.cc, examples/fortransub.f, examples/funcdemo.cc, examples/globaldemo.cc, examples/helloworld.cc, examples/make_int.cc, examples/mex_demo.c, examples/mycell.c, examples/myfeval.c, examples/myfevalf.f, examples/myfunc.c, examples/myhello.c, examples/mypow2.c, examples/myprop.c, examples/myset.c, examples/mysparse.c, examples/mystring.c, examples/mystruct.c, examples/oct_demo.cc, examples/oregonator.cc, examples/oregonator.m, examples/paramdemo.cc, examples/standalone.cc, examples/standalonebuiltin.cc, examples/stringdemo.cc, examples/structdemo.cc, examples/unwinddemo.cc: Move current example files to examples/code/ directory. * configure.ac: Add Makefiles in examples/code and examples/data directories. * build-aux/common.mk: Define octdatadir variable. * doc/interpreter/Makefile.am: Change location of External Code Interface examples to examples/code directory. * doc/interpreter/munge-texi.pl: Expand EXAMPLEFILE macro to examples/code directory.
author Rik <rik@octave.org>
date Tue, 19 Aug 2014 14:32:44 -0700
parents examples/mypow2.c@224e76250443
children 5c42ff6f0eb1
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1 #include "mex.h"
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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 mwSize n;
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8 mwIndex i;
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9 double *vri, *vro;
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11 if (nrhs != 1 || ! mxIsNumeric (prhs[0]))
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12 mexErrMsgTxt ("ARG1 must be a matrix");
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14 n = mxGetNumberOfElements (prhs[0]);
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15 plhs[0] = mxCreateNumericArray (mxGetNumberOfDimensions (prhs[0]),
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16 mxGetDimensions (prhs[0]),
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17 mxGetClassID (prhs[0]),
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18 mxIsComplex (prhs[0]));
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19 vri = mxGetPr (prhs[0]);
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20 vro = mxGetPr (plhs[0]);
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22 if (mxIsComplex (prhs[0]))
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23 {
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24 double *vii, *vio;
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25 vii = mxGetPi (prhs[0]);
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26 vio = mxGetPi (plhs[0]);
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27
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28 for (i = 0; i < n; i++)
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29 {
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30 vro[i] = vri[i] * vri[i] - vii[i] * vii[i];
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31 vio[i] = 2 * vri[i] * vii[i];
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32 }
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33 }
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34 else
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35 {
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36 for (i = 0; i < n; i++)
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37 vro[i] = vri[i] * vri[i];
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38 }
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39 }