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- // (C) Copyright Eric Niebler 2005.
- // Use, modification and distribution are subject to the
- // Boost Software License, Version 1.0. (See accompanying file
- // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- #include <boost/test/unit_test.hpp>
- #include <boost/test/floating_point_comparison.hpp>
- #include <boost/accumulators/accumulators.hpp>
- #include <boost/accumulators/statistics/stats.hpp>
- #include <boost/accumulators/statistics/moment.hpp>
- #include <sstream>
- #include <boost/archive/text_oarchive.hpp>
- #include <boost/archive/text_iarchive.hpp>
- using namespace boost;
- using namespace unit_test;
- using namespace accumulators;
- ///////////////////////////////////////////////////////////////////////////////
- // test_stat
- //
- void test_stat()
- {
- accumulator_set<int, stats<tag::moment<2> > > acc1;
- acc1(2); // 4
- acc1(4); // 16
- acc1(5); // + 25
- // = 45 / 3 = 15
- BOOST_CHECK_CLOSE(15., accumulators::moment<2>(acc1), 1e-5);
- accumulator_set<int, stats<tag::moment<5> > > acc2;
- acc2(2); // 32
- acc2(3); // 243
- acc2(4); // 1024
- acc2(5); // + 3125
- // = 4424 / 4 = 1106
- BOOST_CHECK_CLOSE(1106., accumulators::moment<5>(acc2), 1e-5);
- }
- ///////////////////////////////////////////////////////////////////////////////
- // test_persistency
- //
- void test_persistency()
- {
- double epsilon = 1e-5;
- std::stringstream ss;
- {
- accumulator_set<int, stats<tag::moment<2> > > acc;
- acc(2); // 4
- acc(4); // 16
- acc(5); // + 25
- // = 45 / 3 = 15
- BOOST_CHECK_CLOSE(15., accumulators::moment<2>(acc), epsilon);
- boost::archive::text_oarchive oa(ss);
- acc.serialize(oa, 0);
- }
- accumulator_set<int, stats<tag::moment<2> > > acc;
- boost::archive::text_iarchive ia(ss);
- acc.serialize(ia, 0);
- BOOST_CHECK_CLOSE(15., accumulators::moment<2>(acc), epsilon);
- }
- ///////////////////////////////////////////////////////////////////////////////
- // init_unit_test_suite
- //
- test_suite* init_unit_test_suite( int argc, char* argv[] )
- {
- test_suite *test = BOOST_TEST_SUITE("moment test");
- test->add(BOOST_TEST_CASE(&test_stat));
- test->add(BOOST_TEST_CASE(&test_persistency));
- return test;
- }
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