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Document calling DEFUN functions in C++. * examples/standalonebuiltin.cc: new file. * doc/interpreter/external.txi: add a paragraph about calling DEFUN functions in C++.
author Carlo de Falco <cdf@users.sourceforge.net>
date Mon, 18 Nov 2013 09:23:15 +0100
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children adb7c7e6a4a1
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17949
3341d2f1e5db Document calling DEFUN functions in C++.
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1 #include <iostream>
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2 #include <octave/oct.h>
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3 #include <octave/builtin-defun-decls.h>
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4
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5 int
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6 main (void)
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7 {
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8
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9 int n = 2;
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10 Matrix a_matrix = Matrix (n, n);
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11
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12 for (octave_idx_type i = 0; i < n; i++)
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13 for (octave_idx_type j = 0; j < n; j++)
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14 a_matrix(i,j) = (i + 1) * 10 + (j + 1);
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15
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16 std::cout << "This is a matrix:"
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17 << std::endl
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18 << a_matrix
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19 << std::endl;
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20
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21 octave_value_list in;
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22 in(0) = a_matrix;
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23
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24 octave_value_list out = Fnorm (in, 1);
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25 double norm_of_the_matrix = out(0).double_value ();
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26
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27 std::cout << "This is the norm of the matrix:"
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28 << std::endl
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29 << norm_of_the_matrix
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30 << std::endl;
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31
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32 return 0;
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33 }