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common.hh

00001 // Copyright (C) 2007, 2008, 2009 EPITA Research and Development
00002 // Laboratory (LRDE)
00003 //
00004 // This file is part of Olena.
00005 //
00006 // Olena is free software: you can redistribute it and/or modify it under
00007 // the terms of the GNU General Public License as published by the Free
00008 // Software Foundation, version 2 of the License.
00009 //
00010 // Olena is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013 // General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU General Public License
00016 // along with Olena.  If not, see <http://www.gnu.org/licenses/>.
00017 //
00018 // As a special exception, you may use this file as part of a free
00019 // software project without restriction.  Specifically, if other files
00020 // instantiate templates or use macros or inline functions from this
00021 // file, or you compile this file and link it with other files to produce
00022 // an executable, this file does not by itself cause the resulting
00023 // executable to be covered by the GNU General Public License.  This
00024 // exception does not however invalidate any other reasons why the
00025 // executable file might be covered by the GNU General Public License.
00026 
00027 #ifndef TESTS_NORM_COMMON_HH
00028 # define TESTS_NORM_COMMON_HH
00029 
00030 #include <cassert>
00031 
00032 #include <mln/math/abs.hh>
00033 
00034 
00035 // FIXME: We should have a almost_equal function somewhere in Milena.
00036 static const float epsilon = 0.0001f;
00037 
00038 
00039 namespace test
00040 {
00041 
00042   template <typename Norm, typename V>
00043   void
00044   check_norm(const Norm& norm, const V& vec1, const V& vec2)
00045   {
00046     assert(mln::math::abs(norm(vec1) - norm(vec2)) < epsilon);
00047   }
00048 
00049   template <typename Distance, typename V, typename S>
00050   void
00051   check_distance(const Distance& dist, const V& vec1, const V& vec2,
00052                  const S& ref_val)
00053   {
00054     float delta = mln::math::abs(static_cast<float>(dist(vec1, vec2))
00055                                  - static_cast<float>(ref_val));
00056     assert(delta < epsilon);
00057   }
00058 
00059 } // end of namespace test.
00060 
00061 
00062 #endif // ! TESTS_NORM_COMMON_HH

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