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Cleanup benchmark headers a tiny bit

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Martin Hořeňovský 2020-05-19 18:12:25 +02:00
parent bad8b7c866
commit 0c6fda6e7d
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2 changed files with 21 additions and 19 deletions
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21
src/catch2/benchmark/detail/catch_stats.cpp
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@ -21,6 +21,27 @@
#endif
namespace {
using Catch::Benchmark::Detail::sample;
template <typename URng, typename Estimator>
sample resample(URng& rng, int resamples, std::vector<double>::iterator first, std::vector<double>::iterator last, Estimator& estimator) {
auto n = last - first;
std::uniform_int_distribution<decltype(n)> dist(0, n - 1);
sample out;
out.reserve(resamples);
std::generate_n(std::back_inserter(out), resamples, [n, first, &estimator, &dist, &rng] {
std::vector<double> resampled;
resampled.reserve(n);
std::generate_n(std::back_inserter(resampled), n, [first, &dist, &rng] { return first[dist(rng)]; });
return estimator(resampled.begin(), resampled.end());
});
std::sort(out.begin(), out.end());
return out;
}
double erf_inv(double x) {
// Code accompanying the article "Approximating the erfinv function" in GPU Computing Gems, Volume 2
double w, p;

19
src/catch2/benchmark/detail/catch_stats.hpp
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@ -18,12 +18,10 @@
#include <algorithm>
#include <functional>
#include <vector>
#include <iterator>
#include <numeric>
#include <cmath>
#include <utility>
#include <cstddef>
#include <random>
namespace Catch {
namespace Benchmark {
@ -63,23 +61,6 @@ namespace Catch {
return sum / count;
}
template <typename URng, typename Iterator, typename Estimator>
sample resample(URng& rng, int resamples, Iterator first, Iterator last, Estimator& estimator) {
auto n = last - first;
std::uniform_int_distribution<decltype(n)> dist(0, n - 1);
sample out;
out.reserve(resamples);
std::generate_n(std::back_inserter(out), resamples, [n, first, &estimator, &dist, &rng] {
std::vector<double> resampled;
resampled.reserve(n);
std::generate_n(std::back_inserter(resampled), n, [first, &dist, &rng] { return first[dist(rng)]; });
return estimator(resampled.begin(), resampled.end());
});
std::sort(out.begin(), out.end());
return out;
}
template <typename Estimator, typename Iterator>
sample jackknife(Estimator&& estimator, Iterator first, Iterator last) {
auto n = last - first;