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42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
// (C) Copyright Nick Thompson 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 <array>
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#include <vector>
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#include <iostream>
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#include <benchmark/benchmark.h>
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#include <boost/math/tools/quartic_roots.hpp>
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using boost::math::tools::quartic_roots;
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template<class Real>
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void QuarticRoots(benchmark::State& state)
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{
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std::random_device rd;
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auto seed = rd();
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// This seed generates 3 real roots:
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//uint32_t seed = 416683252;
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std::mt19937_64 mt(seed);
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std::uniform_real_distribution<Real> unif(-10, 10);
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Real a = unif(mt);
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Real b = unif(mt);
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Real c = unif(mt);
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Real d = unif(mt);
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Real e = unif(mt);
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for (auto _ : state)
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{
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auto roots = quartic_roots(a,b,c,d, e);
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benchmark::DoNotOptimize(roots[0]);
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}
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}
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BENCHMARK_TEMPLATE(QuarticRoots, float);
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BENCHMARK_TEMPLATE(QuarticRoots, double);
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BENCHMARK_TEMPLATE(QuarticRoots, long double);
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BENCHMARK_MAIN();
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