30 lines
884 B
C++
30 lines
884 B
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_HANA_BENCHMARK_MEASURE_HPP
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#define BOOST_HANA_BENCHMARK_MEASURE_HPP
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#include <chrono>
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#include <iostream>
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namespace boost { namespace hana { namespace benchmark {
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auto measure = [](auto f) {
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constexpr auto repetitions = 500ull;
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auto start = std::chrono::steady_clock::now();
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for (auto i = repetitions; i > 0; --i) {
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f();
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}
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auto stop = std::chrono::steady_clock::now();
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auto time = std::chrono::duration_cast<std::chrono::duration<float>>(
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(stop - start) / repetitions
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);
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std::cout << std::fixed;
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std::cout << "[execution time: " << time.count() << "]" << std::endl;
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};
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}}}
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#endif
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