2 Copyright (C) 2015 Carl Hetherington <cth@carlh.net>
4 This file is part of libdcp.
6 libdcp is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 libdcp is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with libdcp. If not, see <http://www.gnu.org/licenses/>.
20 #include "gamma_transfer_function.h"
21 #include "modified_gamma_transfer_function.h"
22 #include <boost/test/unit_test.hpp>
24 using boost::shared_ptr;
26 /** Check GammaTransferFunction::about_equal */
27 BOOST_AUTO_TEST_CASE (gamma_transfer_function_test)
29 shared_ptr<dcp::GammaTransferFunction> a (new dcp::GammaTransferFunction (1.2));
30 shared_ptr<dcp::GammaTransferFunction> b (new dcp::GammaTransferFunction (1.2));
31 BOOST_CHECK (a->about_equal (b, 1e-6));
33 a.reset (new dcp::GammaTransferFunction (1.2));
34 a.reset (new dcp::GammaTransferFunction (1.3));
35 BOOST_CHECK (a->about_equal (b, 0.2));
36 BOOST_CHECK (!a->about_equal (b, 0.05));
38 shared_ptr<dcp::ModifiedGammaTransferFunction> c (new dcp::ModifiedGammaTransferFunction (2.4, 0.05, 1, 2));
39 BOOST_CHECK (!a->about_equal (c, 1));