| // (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/weighted_mean.hpp> |
| #include <boost/accumulators/statistics/variates/covariate.hpp> |
| |
| using namespace boost; |
| using namespace unit_test; |
| using namespace accumulators; |
| |
| template<typename T> |
| void assert_is_double(T const &) |
| { |
| BOOST_MPL_ASSERT((is_same<T, double>)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // test_stat |
| // |
| void test_stat() |
| { |
| accumulator_set< |
| int |
| , stats< |
| tag::weighted_mean |
| , tag::mean_of_weights |
| , tag::weighted_mean_of_variates<int, tag::covariate1> |
| > |
| , int |
| > acc, test_acc(sample = 0); |
| |
| acc(1, weight = 2, covariate1 = 3); |
| BOOST_CHECK_CLOSE(1., weighted_mean(acc), 1e-5); |
| BOOST_CHECK_EQUAL(1u, count(acc)); |
| BOOST_CHECK_EQUAL(2, sum(acc)); |
| BOOST_CHECK_CLOSE(2., mean_of_weights(acc), 1e-5); |
| BOOST_CHECK_CLOSE(3., (accumulators::weighted_mean_of_variates<int, tag::covariate1>(acc)), 1e-5); |
| |
| acc(0, weight = 4, covariate1 = 4); |
| BOOST_CHECK_CLOSE(1./3., weighted_mean(acc), 1e-5); |
| BOOST_CHECK_EQUAL(2u, count(acc)); |
| BOOST_CHECK_EQUAL(2, sum(acc)); |
| BOOST_CHECK_CLOSE(3., mean_of_weights(acc), 1e-5); |
| BOOST_CHECK_CLOSE(11./3., (accumulators::weighted_mean_of_variates<int, tag::covariate1>(acc)), 1e-5); |
| |
| acc(2, weight = 9, covariate1 = 8); |
| BOOST_CHECK_CLOSE(4./3., weighted_mean(acc), 1e-5); |
| BOOST_CHECK_EQUAL(3u, count(acc)); |
| BOOST_CHECK_EQUAL(20, sum(acc)); |
| BOOST_CHECK_CLOSE(5., mean_of_weights(acc), 1e-5); |
| BOOST_CHECK_CLOSE(94./15., (accumulators::weighted_mean_of_variates<int, tag::covariate1>(acc)), 1e-5); |
| |
| assert_is_double(mean(acc)); |
| |
| accumulator_set< |
| int |
| , stats< |
| tag::weighted_mean(immediate) |
| , tag::mean_of_weights(immediate) |
| , tag::weighted_mean_of_variates<int, tag::covariate1>(immediate) |
| > |
| , int |
| > acc2, test_acc2(sample = 0); |
| |
| acc2(1, weight = 2, covariate1 = 3); |
| BOOST_CHECK_CLOSE(1., weighted_mean(acc2), 1e-5); |
| BOOST_CHECK_EQUAL(1u, count(acc2)); |
| BOOST_CHECK_CLOSE(2., mean_of_weights(acc2), 1e-5); |
| BOOST_CHECK_CLOSE(3., (accumulators::weighted_mean_of_variates<int, tag::covariate1>(acc2)), 1e-5); |
| |
| acc2(0, weight = 4, covariate1 = 4); |
| BOOST_CHECK_CLOSE(1./3., weighted_mean(acc2), 1e-5); |
| BOOST_CHECK_EQUAL(2u, count(acc2)); |
| BOOST_CHECK_CLOSE(3., mean_of_weights(acc2), 1e-5); |
| BOOST_CHECK_CLOSE(11./3., (accumulators::weighted_mean_of_variates<int, tag::covariate1>(acc2)), 1e-5); |
| |
| acc2(2, weight = 9, covariate1 = 8); |
| BOOST_CHECK_CLOSE(4./3., weighted_mean(acc2), 1e-5); |
| BOOST_CHECK_EQUAL(3u, count(acc2)); |
| BOOST_CHECK_CLOSE(5., mean_of_weights(acc2), 1e-5); |
| BOOST_CHECK_CLOSE(94./15., (accumulators::mean_of_variates<int, tag::covariate1>(acc2)), 1e-5); |
| |
| assert_is_double(mean(acc2)); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // init_unit_test_suite |
| // |
| test_suite* init_unit_test_suite( int argc, char* argv[] ) |
| { |
| test_suite *test = BOOST_TEST_SUITE("weighted_mean test"); |
| |
| test->add(BOOST_TEST_CASE(&test_stat)); |
| |
| return test; |
| } |