/////////////////////////////////////////////////////////////////////////////// // Copyright 2012 John Maddock. Distributed under 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) #ifdef _MSC_VER #pragma warning(disable:4244) #endif #include <boost/polygon/detail/voronoi_predicates.hpp> #include <boost/polygon/detail/voronoi_structures.hpp> #include <boost/polygon/detail/skeleton_predicates.hpp> #include <boost/random/mersenne_twister.hpp> #include <boost/random/uniform_int_distribution.hpp> #include <vector> #include <map> #include <boost/chrono.hpp> #include <boost/multiprecision/cpp_int.hpp> #ifdef TEST_GMP #include <boost/multiprecision/gmp.hpp> #endif #ifdef TEST_TOMMATH #include <boost/multiprecision/tommath.hpp> #endif #include "arithmetic_backend.hpp" typedef boost::polygon::detail::point_2d<boost::int32_t> i_point; template <class Clock> struct stopwatch { typedef typename Clock::duration duration; stopwatch() { m_start = Clock::now(); } duration elapsed() { return Clock::now() - m_start; } void reset() { m_start = Clock::now(); } private: typename Clock::time_point m_start; }; std::vector<i_point> points; boost::random::mt19937 gen; template <class Big> struct cpp_int_voronoi_traits { typedef boost::int32_t int_type; typedef boost::int64_t int_x2_type; typedef boost::uint64_t uint_x2_type; typedef Big big_int_type; typedef double fpt_type; typedef boost::polygon::detail::extended_exponent_fpt<fpt_type> efpt_type; typedef boost::polygon::detail::ulp_comparison<fpt_type> ulp_cmp_type; struct to_fpt_converter_type { template <class B, boost::multiprecision::expression_template_option ET> double operator ()(const boost::multiprecision::number<B, ET>& val) { return val.template convert_to<double>(); } double operator ()(double val) { return val; } double operator()(const efpt_type& that) const { return that.d(); } template <class tag, class Arg1, class Arg2, class Arg3, class Arg4> double operator()(const boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>& e) { typedef typename boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>::result_type r_t; r_t r(e); return r.template convert_to<double>(); } }; struct to_efpt_converter_type { template <class B, boost::multiprecision::expression_template_option ET> efpt_type operator ()(const boost::multiprecision::number<B, ET>& val) { return efpt_type(val.template convert_to<double>(), 0); } efpt_type operator ()(double val) { return efpt_type(val, 0); } template <class tag, class Arg1, class Arg2, class Arg3, class Arg4> double operator()(const boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>& e) { typedef typename boost::multiprecision::detail::expression<tag, Arg1, Arg2, Arg3, Arg4>::result_type r_t; r_t r(e); return efpt_type(r.template convert_to<double>(), 0); } }; }; template <class Big> struct native_int_voronoi_traits { typedef boost::int32_t int_type; typedef boost::int64_t int_x2_type; typedef boost::uint64_t uint_x2_type; typedef Big big_int_type; typedef double fpt_type; typedef boost::polygon::detail::extended_exponent_fpt<fpt_type> efpt_type; typedef boost::polygon::detail::ulp_comparison<fpt_type> ulp_cmp_type; struct to_fpt_converter_type { template <class T> double operator ()(const T& val)const { return val; } double operator()(const efpt_type& that) const { return that.d(); } }; struct to_efpt_converter_type { template <class T> efpt_type operator ()(const T& val)const { return efpt_type(val, 0); } }; }; std::map<std::string, double> results; double min_time = (std::numeric_limits<double>::max)(); template <class Traits> double test(const char* name) { typedef boost::polygon::detail::voronoi_predicates<Traits> preds; typedef boost::polygon::detail::circle_event<boost::int32_t> circle_event; typedef boost::polygon::detail::site_event<boost::int32_t> site_event; typedef typename preds::template mp_circle_formation_functor<site_event, circle_event> circle_pred; boost::random::uniform_int_distribution<> dist(0, points.size() - 1); circle_pred pc; circle_event event; stopwatch<boost::chrono::high_resolution_clock> w; for(unsigned i = 0; i < 10000; ++i) { site_event s1(points[dist(gen)]); site_event s2(points[dist(gen)]); site_event s3(points[dist(gen)]); pc.ppp(s1, s2, s3, event); pc.pps(s1, s2, s3, 0, event); pc.pss(s1, s2, s3, 0, event); pc.sss(s1, s2, s3, event); } double d = boost::chrono::duration_cast<boost::chrono::duration<double> >(w.elapsed()).count(); if(d < min_time) min_time = d; results[name] = d; std::cout << "Time for " << std::setw(30) << std::left << name << " = " << d << std::endl; return d; } void generate_quickbook() { std::cout << "[table\n[[Integer Type][Relative Performance (Actual time in parenthesis)]]\n"; std::map<std::string, double>::const_iterator i(results.begin()), j(results.end()); while(i != j) { double rel = i->second / min_time; std::cout << "[[" << i->first << "][" << rel << "(" << i->second << "s)]]\n"; ++i; } std::cout << "]\n"; } int main() { boost::random::uniform_int_distribution<> dist((std::numeric_limits<boost::int32_t>::min)() / 2, (std::numeric_limits<boost::int32_t>::max)() / 2); for(unsigned i = 0; i < 100; ++i) { points.push_back(i_point(dist(gen), dist(gen))); } test<boost::polygon::detail::voronoi_ctype_traits<boost::int32_t> >("extended_int"); test<cpp_int_voronoi_traits<boost::multiprecision::int256_t> >("int256_t"); test<cpp_int_voronoi_traits<boost::multiprecision::int512_t> >("int512_t"); test<cpp_int_voronoi_traits<boost::multiprecision::int1024_t> >("int1024_t"); test<cpp_int_voronoi_traits<boost::multiprecision::checked_int256_t> >("checked_int256_t"); test<cpp_int_voronoi_traits<boost::multiprecision::checked_int512_t> >("checked_int512_t"); test<cpp_int_voronoi_traits<boost::multiprecision::checked_int1024_t> >("checked_int1024_t"); test<cpp_int_voronoi_traits<boost::multiprecision::number<boost::multiprecision::cpp_int_backend<>, boost::multiprecision::et_off> > >("cpp_int"); #ifdef TEST_GMP test<cpp_int_voronoi_traits<boost::multiprecision::number<boost::multiprecision::gmp_int, boost::multiprecision::et_off> > >("mpz_int"); #endif #ifdef TEST_TOMMATH test<cpp_int_voronoi_traits<boost::multiprecision::number<boost::multiprecision::tommath_int, boost::multiprecision::et_off> > >("tom_int"); #endif generate_quickbook(); test<native_int_voronoi_traits<boost::int64_t> >("int64_t"); test<cpp_int_voronoi_traits<boost::multiprecision::number<boost::multiprecision::arithmetic_backend<boost::int64_t>, boost::multiprecision::et_off> > >("number<arithmetic_backend<boost::int64_t>, et_off>"); //test<cpp_int_voronoi_traits<boost::multiprecision::number<boost::multiprecision::arithmetic_backend<boost::int64_t>, boost::multiprecision::et_on> > >("number<arithmetic_backend<boost::int64_t>, et_on>"); return 0; }