$extrastylesheet
Olena  User documentation 2.1
An Image Processing Platform
 All Classes Namespaces Functions Variables Typedefs Enumerations Enumerator Friends Groups Pages
common.hh
1 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development
2 // Laboratory (LRDE)
3 //
4 // This file is part of Olena.
5 //
6 // Olena is free software: you can redistribute it and/or modify it under
7 // the terms of the GNU General Public License as published by the Free
8 // Software Foundation, version 2 of the License.
9 //
10 // Olena is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // General Public License for more details.
14 //
15 // You should have received a copy of the GNU General Public License
16 // along with Olena. If not, see <http://www.gnu.org/licenses/>.
17 //
18 // As a special exception, you may use this file as part of a free
19 // software project without restriction. Specifically, if other files
20 // instantiate templates or use macros or inline functions from this
21 // file, or you compile this file and link it with other files to produce
22 // an executable, this file does not by itself cause the resulting
23 // executable to be covered by the GNU General Public License. This
24 // exception does not however invalidate any other reasons why the
25 // executable file might be covered by the GNU General Public License.
26 
27 #ifndef TESTS_NORM_COMMON_HH
28 # define TESTS_NORM_COMMON_HH
29 
30 #include <cassert>
31 
32 #include <mln/math/abs.hh>
33 
34 
35 // FIXME: We should have a almost_equal function somewhere in Milena.
36 static const float epsilon = 0.0001f;
37 
38 
39 namespace test
40 {
41 
42  template <typename Norm, typename V>
43  void
44  check_norm(const Norm& norm, const V& vec1, const V& vec2)
45  {
46  assert(mln::math::abs(norm(vec1) - norm(vec2)) < epsilon);
47  }
48 
49  template <typename Distance, typename V, typename S>
50  void
51  check_distance(const Distance& dist, const V& vec1, const V& vec2,
52  const S& ref_val)
53  {
54  float delta = mln::math::abs(static_cast<float>(dist(vec1, vec2))
55  - static_cast<float>(ref_val));
56  assert(delta < epsilon);
57  }
58 
59 } // end of namespace test.
60 
61 
62 #endif // ! TESTS_NORM_COMMON_HH