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- // (C) Copyright Simon West 2011.
- // 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/accumulators/accumulators.hpp>
- #include <boost/accumulators/statistics/stats.hpp>
- #include <boost/accumulators/statistics/weighted_sum_kahan.hpp>
- #include <boost/accumulators/statistics/variates/covariate.hpp>
- using namespace boost;
- using namespace unit_test;
- using namespace accumulators;
- ///////////////////////////////////////////////////////////////////////////////
- // test_weighted_sum_kahan
- //
- void test_weighted_sum_kahan()
- {
- accumulator_set<float, stats<tag::weighted_sum_kahan>, float > acc;
- BOOST_CHECK_EQUAL(0.0f, weighted_sum_kahan(acc));
- for (size_t i = 0; i < 1e6; ++i) {
- acc(1, weight = 1e-6f);
- }
- BOOST_CHECK_EQUAL(1.0f, weighted_sum_kahan(acc));
- }
- ///////////////////////////////////////////////////////////////////////////////
- // test_weighted_sum_of_variates_kahan
- //
- void test_weighted_sum_of_variates_kahan()
- {
- accumulator_set<
- float,
- stats<tag::weighted_sum_of_variates_kahan<float, tag::covariate1> >,
- float
- >
- acc;
- BOOST_CHECK_EQUAL(0.0f, weighted_sum_of_variates_kahan(acc));
- for (size_t i = 0; i < 1e6; ++i) {
- acc(0, weight = 1.0f, covariate1 = 1e-6f);
- }
- BOOST_CHECK_EQUAL(1.0f, weighted_sum_of_variates_kahan(acc));
- }
- ///////////////////////////////////////////////////////////////////////////////
- // init_unit_test_suite
- //
- test_suite* init_unit_test_suite( int argc, char* argv[] )
- {
- test_suite *test = BOOST_TEST_SUITE("weighted sum kahan tests");
- test->add(BOOST_TEST_CASE(&test_weighted_sum_kahan));
- test->add(BOOST_TEST_CASE(&test_weighted_sum_of_variates_kahan));
- return test;
- }
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