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74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
// (C) Copyright Victor Ananyev 2021.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include <random>
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#include <vector>
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#include <boost/math/distributions.hpp>
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#include <benchmark/benchmark.h>
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template <class Z, template<typename> class dist >
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void test_mode_2param(benchmark::State& state)
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{
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using boost::math::normal_distribution;
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std::random_device rd;
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std::mt19937_64 mt(rd());
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std::normal_distribution<Z> noise(0., 1E-6);
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for (auto _ : state)
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{
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state.PauseTiming();
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Z p1 = state.range(0) + noise(mt);
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Z p2 = state.range(1) + noise(mt);
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dist<Z> the_dist(p1, p2);
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state.ResumeTiming();
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try {
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benchmark::DoNotOptimize(mode(the_dist));
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}
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catch (boost::wrapexcept<boost::math::evaluation_error>& e) {
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state.SkipWithError(e.what());
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break;
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}
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}
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}
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static void fixed_ratio_2args(benchmark::internal::Benchmark* b, long double left_div_right, std::vector<int64_t> lefts) {
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for (const long double &left: lefts) {
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b->Args({static_cast<int64_t>(left), static_cast<int64_t>((left/left_div_right))});
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}
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}
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using boost::math::non_central_chi_squared_distribution;
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BENCHMARK_TEMPLATE(test_mode_2param, long double, non_central_chi_squared_distribution)->ArgsProduct({
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{2, 15, 50},
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benchmark::CreateRange(4, 1024, /*multi=*/2)
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})->Name("fixed_k");
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BENCHMARK_TEMPLATE(test_mode_2param, long double, non_central_chi_squared_distribution)->ArgsProduct({
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benchmark::CreateRange(4, 4096, /*multi=*/2),
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{1, 30, 100, 500}
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})->Name("fixed_nc");
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BENCHMARK_TEMPLATE(test_mode_2param, long double, non_central_chi_squared_distribution)
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-> Apply([](benchmark::internal::Benchmark*b) {
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fixed_ratio_2args(b, 0.05, benchmark::CreateRange(4, 4096, /*multi=*/2));
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}) -> Name("fixed_scale_0_05");
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BENCHMARK_TEMPLATE(test_mode_2param, long double, non_central_chi_squared_distribution)
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-> Apply([](benchmark::internal::Benchmark*b) {
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fixed_ratio_2args(b, 0.15, benchmark::CreateRange(4, 4096, /*multi=*/2));
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}) -> Name("fixed_scale_0_15");
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BENCHMARK_TEMPLATE(test_mode_2param, long double, non_central_chi_squared_distribution)
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-> Apply([](benchmark::internal::Benchmark*b) {
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fixed_ratio_2args(b, 0.25, benchmark::CreateRange(4, 4096, /*multi=*/2));
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}) -> Name("fixed_scale_0_25");
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BENCHMARK_MAIN();
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