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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)
// Test case for extended_p_square.hpp
#include <iostream>
#include <boost/random.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/test/floating_point_comparison.hpp>
#include <boost/accumulators/numeric/functional/vector.hpp>
#include <boost/accumulators/numeric/functional/complex.hpp>
#include <boost/accumulators/numeric/functional/valarray.hpp>
#include <boost/accumulators/accumulators.hpp>
#include <boost/accumulators/statistics/stats.hpp>
#include <boost/accumulators/statistics/extended_p_square.hpp>
#include <sstream>
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
using namespace boost;
using namespace unit_test;
using namespace boost::accumulators;
typedef accumulator_set<double, stats<tag::extended_p_square> > accumulator_t;
///////////////////////////////////////////////////////////////////////////////
// test_stat
//
void test_stat()
{
// tolerance
double epsilon = 3;
// a random number generator
boost::lagged_fibonacci607 rng;
std::vector<double> probs;
probs.push_back(0.001);
probs.push_back(0.01 );
probs.push_back(0.1 );
probs.push_back(0.25 );
probs.push_back(0.5 );
probs.push_back(0.75 );
probs.push_back(0.9 );
probs.push_back(0.99 );
probs.push_back(0.999);
accumulator_t acc(extended_p_square_probabilities = probs);
for (int i=0; i<10000; ++i)
acc(rng());
BOOST_CHECK_GE(extended_p_square(acc)[0], 0.0005);
BOOST_CHECK_LE(extended_p_square(acc)[0], 0.0015);
BOOST_CHECK_CLOSE(extended_p_square(acc)[1], probs[1], 15);
BOOST_CHECK_CLOSE(extended_p_square(acc)[2], probs[2], 5);
for (std::size_t i=3; i<probs.size(); ++i)
{
BOOST_CHECK_CLOSE(extended_p_square(acc)[i], probs[i], epsilon);
}
}
///////////////////////////////////////////////////////////////////////////////
// test_persistency
//
void test_persistency()
{
// "persistent" storage
std::stringstream ss;
// tolerance
double epsilon = 3.;
std::vector<double> probs;
probs.push_back(0.75);
{
accumulator_t acc(extended_p_square_probabilities = probs);
// a random number generator
boost::lagged_fibonacci607 rng;
for (int i=0; i<10000; ++i)
acc(rng());
BOOST_CHECK_CLOSE(extended_p_square(acc)[0], probs[0], epsilon);
boost::archive::text_oarchive oa(ss);
acc.serialize(oa, 0);
}
accumulator_t acc(extended_p_square_probabilities = probs);
boost::archive::text_iarchive ia(ss);
acc.serialize(ia, 0);
BOOST_CHECK_CLOSE(extended_p_square(acc)[0], probs[0], epsilon);
}
///////////////////////////////////////////////////////////////////////////////
// init_unit_test_suite
//
test_suite* init_unit_test_suite( int argc, char* argv[] )
{
test_suite *test = BOOST_TEST_SUITE("extended_p_square test");
test->add(BOOST_TEST_CASE(&test_stat));
test->add(BOOST_TEST_CASE(&test_persistency));
return test;
}
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