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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
// Adapted from donated nonius code.
#include <catch2/benchmark/detail/catch_analyse.hpp>
#include <catch2/benchmark/catch_clock.hpp>
#include <catch2/benchmark/catch_sample_analysis.hpp>
#include <catch2/benchmark/detail/catch_stats.hpp>
#include <catch2/interfaces/catch_interfaces_config.hpp>
#include <catch2/internal/catch_move_and_forward.hpp>
#include <vector>
namespace Catch {
namespace Benchmark {
namespace Detail {
SampleAnalysis analyse(const IConfig &cfg, FDuration* first, FDuration* last) {
if (!cfg.benchmarkNoAnalysis()) {
std::vector<double> samples;
samples.reserve(static_cast<size_t>(last - first));
for (auto current = first; current != last; ++current) {
samples.push_back( current->count() );
}
auto analysis = Catch::Benchmark::Detail::analyse_samples(
cfg.benchmarkConfidenceInterval(),
cfg.benchmarkResamples(),
samples.data(),
samples.data() + samples.size() );
auto outliers = Catch::Benchmark::Detail::classify_outliers(
samples.data(), samples.data() + samples.size() );
auto wrap_estimate = [](Estimate<double> e) {
return Estimate<FDuration> {
FDuration(e.point),
FDuration(e.lower_bound),
FDuration(e.upper_bound),
e.confidence_interval,
};
};
std::vector<FDuration> samples2;
samples2.reserve(samples.size());
for (auto s : samples) {
samples2.push_back( FDuration( s ) );
}
return {
CATCH_MOVE(samples2),
wrap_estimate(analysis.mean),
wrap_estimate(analysis.standard_deviation),
outliers,
analysis.outlier_variance,
};
} else {
std::vector<FDuration> samples;
samples.reserve(static_cast<size_t>(last - first));
FDuration mean = FDuration(0);
int i = 0;
for (auto it = first; it < last; ++it, ++i) {
samples.push_back(*it);
mean += *it;
}
mean /= i;
return SampleAnalysis{
CATCH_MOVE(samples),
Estimate<FDuration>{ mean, mean, mean, 0.0 },
Estimate<FDuration>{ FDuration( 0 ),
FDuration( 0 ),
FDuration( 0 ),
0.0 },
OutlierClassification{},
0.0
};
}
}
} // namespace Detail
} // namespace Benchmark
} // namespace Catch
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