Merge pull request #18 from Progmasoft/build/catch3-identity

Give Catch3 its own build names and headers

28 files changed, 1863 insertions, 0 deletions

diff --git a/src/Progmasoft/Catch3/Benchmark/All.hpp b/src/Progmasoft/Catch3/Benchmark/All.hpp
new file mode 100644
index 00000000..bc0d9526
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/All.hpp
@@ -0,0 +1,44 @@
+
+//              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
+/** \file
+ * This is a convenience header for Catch2's benchmarking. It includes
+ * **all** of Catch2 headers related to benchmarking.
+ *
+ * Generally the Catch2 users should use specific includes they need,
+ * but this header can be used instead for ease-of-experimentation, or
+ * just plain convenience, at the cost of (significantly) increased
+ * compilation times.
+ *
+ * When a new header is added to either the `benchmark` folder, or to
+ * the corresponding internal (detail) subfolder, it should be added here.
+ */
+
+#pragma once
+
+#include <Progmasoft/Catch3/Benchmark/Benchmark.hpp>
+#include <Progmasoft/Catch3/Benchmark/Chronometer.hpp>
+#include <Progmasoft/Catch3/Benchmark/Clock.hpp>
+#include <Progmasoft/Catch3/Benchmark/Constructor.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Analyse.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/BenchmarkFunction.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/BenchmarkStats.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/BenchmarkStatsFwd.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/CompleteInvoke.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/EstimateClock.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Measure.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Repeat.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/RunForAtLeast.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Stats.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Timing.hpp>
+#include <Progmasoft/Catch3/Benchmark/Environment.hpp>
+#include <Progmasoft/Catch3/Benchmark/Estimate.hpp>
+#include <Progmasoft/Catch3/Benchmark/ExecutionPlan.hpp>
+#include <Progmasoft/Catch3/Benchmark/Optimizer.hpp>
+#include <Progmasoft/Catch3/Benchmark/OutlierClassification.hpp>
+#include <Progmasoft/Catch3/Benchmark/SampleAnalysis.hpp>
+
diff --git a/src/Progmasoft/Catch3/Benchmark/Benchmark.cpp b/src/Progmasoft/Catch3/Benchmark/Benchmark.cpp
new file mode 100644
index 00000000..8967b12c
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Benchmark.cpp
@@ -0,0 +1,54 @@
+
+//              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
+
+#include <Progmasoft/Catch3/Benchmark/Benchmark.hpp>
+
+#include <algorithm>
+#include <chrono>
+#include <cmath>
+
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
+
+            Environment measure_environment_default() {
+                return Detail::measure_environment<default_clock>();
+            }
+
+            ExecutionPlan prepare_default( const IConfig& cfg,
+                                           Environment env,
+                                           BenchmarkFunction&& fun ) {
+                // This mirrors Benchmark::prepare<default_clock>(), but with the
+                // clock fixed so it is instantiated once here in the library.
+                auto min_time = env.clock_resolution.mean * Detail::minimum_ticks;
+                auto run_time = std::max(
+                    min_time,
+                    std::chrono::duration_cast<decltype( min_time )>(
+                        cfg.benchmarkWarmupTime() ) );
+                auto&& test = Detail::run_for_at_least<default_clock>(
+                    std::chrono::duration_cast<IDuration>( run_time ), 1, fun );
+                int new_iters = static_cast<int>(
+                    std::ceil( min_time * test.iterations / test.elapsed ) );
+                return { new_iters,
+                         test.elapsed / test.iterations * new_iters *
+                             cfg.benchmarkSamples(),
+                         CATCH_MOVE( fun ),
+                         std::chrono::duration_cast<FDuration>(
+                             cfg.benchmarkWarmupTime() ),
+                         Detail::warmup_iterations };
+            }
+
+            std::vector<FDuration> run_plan_default( ExecutionPlan const& plan,
+                                                     const IConfig& cfg,
+                                                     Environment env ) {
+                return plan.run<default_clock>( cfg, env );
+            }
+
+        } // namespace Detail
+    } // namespace Benchmark
+} // namespace Catch
diff --git a/src/Progmasoft/Catch3/Benchmark/Benchmark.hpp b/src/Progmasoft/Catch3/Benchmark/Benchmark.hpp
new file mode 100644
index 00000000..f19c6603
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Benchmark.hpp
@@ -0,0 +1,220 @@
+
+//              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.
+
+#pragma once
+
+#include <Progmasoft/Catch3/UserConfig.hpp>
+#include <Progmasoft/Catch3/Internal/CompilerCapabilities.hpp>
+#include <Progmasoft/Catch3/Internal/Context.hpp>
+#include <Progmasoft/Catch3/Internal/MoveAndForward.hpp>
+#include <Progmasoft/Catch3/Internal/TestFailureException.hpp>
+#include <Progmasoft/Catch3/Internal/UniqueName.hpp>
+#include <Progmasoft/Catch3/Interfaces/IResultCapture.hpp>
+#include <Progmasoft/Catch3/Interfaces/IConfig.hpp>
+#include <Progmasoft/Catch3/Interfaces/IRegistryHub.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/BenchmarkStats.hpp>
+#include <Progmasoft/Catch3/Benchmark/Clock.hpp>
+#include <Progmasoft/Catch3/Benchmark/Environment.hpp>
+#include <Progmasoft/Catch3/Benchmark/ExecutionPlan.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/EstimateClock.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Analyse.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/BenchmarkFunction.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/RunForAtLeast.hpp>
+
+#include <algorithm>
+#include <chrono>
+#include <exception>
+#include <string>
+#include <cmath>
+#include <type_traits>
+
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
+            template <typename Clock>
+            ExecutionPlan prepare( const IConfig& cfg,
+                                   Environment env,
+                                   BenchmarkFunction&& fun ) {
+                auto min_time =
+                    env.clock_resolution.mean * Detail::minimum_ticks;
+                auto run_time =
+                    std::max( min_time,
+                              std::chrono::duration_cast<decltype( min_time )>(
+                                  cfg.benchmarkWarmupTime() ) );
+                auto&& test = Detail::run_for_at_least<Clock>(
+                    std::chrono::duration_cast<IDuration>( run_time ), 1, fun );
+                int new_iters = static_cast<int>(
+                    std::ceil( min_time * test.iterations / test.elapsed ) );
+                return { new_iters,
+                         test.elapsed / test.iterations * new_iters *
+                             cfg.benchmarkSamples(),
+                         CATCH_MOVE( fun ),
+                         std::chrono::duration_cast<FDuration>(
+                             cfg.benchmarkWarmupTime() ),
+                         Detail::warmup_iterations };
+            }
+
+            // These are wrappers for their respective function templated
+            // over `default_clock`. This allows outlining the usual use
+            // of the template into single TU and save on compilation costs.
+
+            Environment measure_environment_default();
+            ExecutionPlan prepare_default( const IConfig& cfg,
+                                           Environment env,
+                                           BenchmarkFunction&& fun );
+            std::vector<FDuration> run_plan_default( ExecutionPlan const& plan,
+                                                     const IConfig& cfg,
+                                                     Environment env );
+
+            template <typename Clock>
+            std::enable_if_t<std::is_same<Clock, default_clock>::value,
+                             Environment>
+            measureEnvironmentDispatch() {
+                return measure_environment_default();
+            }
+            template <typename Clock>
+            std::enable_if_t<!std::is_same<Clock, default_clock>::value,
+                             Environment>
+            measureEnvironmentDispatch() {
+                return measure_environment<Clock>();
+            }
+
+            template <typename Clock>
+            std::enable_if_t<std::is_same<Clock, default_clock>::value,
+                             std::vector<FDuration>>
+            runPlanDispatch( ExecutionPlan const& plan,
+                             const IConfig& cfg,
+                             Environment env ) {
+                return run_plan_default( plan, cfg, env );
+            }
+            template <typename Clock>
+            std::enable_if_t<!std::is_same<Clock, default_clock>::value,
+                             std::vector<FDuration>>
+            runPlanDispatch( ExecutionPlan const& plan,
+                             const IConfig& cfg,
+                             Environment env ) {
+                return plan.template run<Clock>( cfg, env );
+            }
+
+            template <typename Clock>
+            std::enable_if_t<std::is_same<Clock, default_clock>::value,
+                             ExecutionPlan>
+            prepareDispatch( const IConfig& cfg,
+                             Environment env,
+                             BenchmarkFunction&& fun ) {
+                return prepare_default( cfg, env, CATCH_MOVE( fun ) );
+            }
+            template <typename Clock>
+            std::enable_if_t<!std::is_same<Clock, default_clock>::value,
+                             ExecutionPlan>
+            prepareDispatch( const IConfig& cfg,
+                             Environment env,
+                             BenchmarkFunction&& fun ) {
+                return prepare<Clock>( cfg, env, CATCH_MOVE( fun ) );
+            }
+        } // namespace Detail
+
+        struct Benchmark {
+            Benchmark(std::string&& benchmarkName)
+                : name(CATCH_MOVE(benchmarkName)) {}
+
+            template <class FUN>
+            Benchmark(std::string&& benchmarkName , FUN &&func)
+                : fun(CATCH_MOVE(func)), name(CATCH_MOVE(benchmarkName)) {}
+
+            template <typename Clock = default_clock>
+            void run() {
+                static_assert( Clock::is_steady,
+                               "Benchmarking clock should be steady" );
+                auto const* cfg = getCurrentContext().getConfig();
+
+                auto env = Detail::measureEnvironmentDispatch<Clock>();
+
+                getResultCapture().benchmarkPreparing(name);
+                CATCH_TRY{
+                    auto plan = user_code([&] {
+                        return Detail::prepareDispatch<Clock>( *cfg, env, CATCH_MOVE(fun) );
+                    });
+
+                    BenchmarkInfo info {
+                        CATCH_MOVE(name),
+                        plan.estimated_duration.count(),
+                        plan.iterations_per_sample,
+                        cfg->benchmarkSamples(),
+                        cfg->benchmarkResamples(),
+                        env.clock_resolution.mean.count(),
+                        env.clock_cost.mean.count()
+                    };
+
+                    getResultCapture().benchmarkStarting(info);
+
+                    auto samples = user_code([&] {
+                        return Detail::runPlanDispatch<Clock>( plan, *cfg, env );
+                    });
+
+                    auto analysis = Detail::analyse(*cfg, samples.data(), samples.data() + samples.size());
+                    BenchmarkStats<> stats{ CATCH_MOVE(info), CATCH_MOVE(analysis.samples), analysis.mean, analysis.standard_deviation, analysis.outliers, analysis.outlier_variance };
+                    getResultCapture().benchmarkEnded(stats);
+                } CATCH_CATCH_ALL {
+                    getResultCapture().benchmarkFailed(translateActiveException());
+                    // We let the exception go further up so that the
+                    // test case is marked as failed.
+                    std::rethrow_exception(std::current_exception());
+                }
+            }
+
+            // sets lambda to be used in fun *and* executes benchmark!
+            template <typename Fun, std::enable_if_t<!Detail::is_related_v<Fun, Benchmark>, int> = 0>
+                Benchmark & operator=(Fun func) {
+                auto const* cfg = getCurrentContext().getConfig();
+                if (!cfg->skipBenchmarks()) {
+                    fun = Detail::BenchmarkFunction(func);
+                    run();
+                }
+                return *this;
+            }
+
+            explicit operator bool() {
+                return true;
+            }
+
+        private:
+            Detail::BenchmarkFunction fun;
+            std::string name;
+        };
+    }
+} // namespace Catch
+
+#define INTERNAL_CATCH_GET_1_ARG(arg1, arg2, ...) arg1
+#define INTERNAL_CATCH_GET_2_ARG(arg1, arg2, ...) arg2
+
+#define INTERNAL_CATCH_BENCHMARK(BenchmarkName, name, benchmarkIndex)\
+    if( Catch::Benchmark::Benchmark BenchmarkName{name} ) \
+        BenchmarkName = [&](int benchmarkIndex)
+
+#define INTERNAL_CATCH_BENCHMARK_ADVANCED(BenchmarkName, name)\
+    if( Catch::Benchmark::Benchmark BenchmarkName{name} ) \
+        BenchmarkName = [&]
+
+#if defined(CATCH_CONFIG_PREFIX_ALL)
+
+#define CATCH_BENCHMARK(...) \
+    INTERNAL_CATCH_BENCHMARK(INTERNAL_CATCH_UNIQUE_NAME(CATCH2_INTERNAL_BENCHMARK_), INTERNAL_CATCH_GET_1_ARG(__VA_ARGS__,,), INTERNAL_CATCH_GET_2_ARG(__VA_ARGS__,,))
+#define CATCH_BENCHMARK_ADVANCED(name) \
+    INTERNAL_CATCH_BENCHMARK_ADVANCED(INTERNAL_CATCH_UNIQUE_NAME(CATCH2_INTERNAL_BENCHMARK_), name)
+
+#else
+
+#define BENCHMARK(...) \
+    INTERNAL_CATCH_BENCHMARK(INTERNAL_CATCH_UNIQUE_NAME(CATCH2_INTERNAL_BENCHMARK_), INTERNAL_CATCH_GET_1_ARG(__VA_ARGS__,,), INTERNAL_CATCH_GET_2_ARG(__VA_ARGS__,,))
+#define BENCHMARK_ADVANCED(name) \
+    INTERNAL_CATCH_BENCHMARK_ADVANCED(INTERNAL_CATCH_UNIQUE_NAME(CATCH2_INTERNAL_BENCHMARK_), name)
+
+#endif
+
diff --git a/src/Progmasoft/Catch3/Benchmark/Chronometer.cpp b/src/Progmasoft/Catch3/Benchmark/Chronometer.cpp
new file mode 100644
index 00000000..78cbb97e
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Chronometer.cpp
@@ -0,0 +1,17 @@
+
+//              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
+
+#include <Progmasoft/Catch3/Benchmark/Chronometer.hpp>
+
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
+            ChronometerConcept::~ChronometerConcept() = default;
+        } // namespace Detail
+    } // namespace Benchmark
+} // namespace Catch
diff --git a/src/Progmasoft/Catch3/Benchmark/Chronometer.hpp b/src/Progmasoft/Catch3/Benchmark/Chronometer.hpp
new file mode 100644
index 00000000..e5550e57
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Chronometer.hpp
@@ -0,0 +1,75 @@
+
+//              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.
+
+#pragma once
+
+#include <Progmasoft/Catch3/Benchmark/Clock.hpp>
+#include <Progmasoft/Catch3/Benchmark/Optimizer.hpp>
+#include <Progmasoft/Catch3/Internal/Meta.hpp>
+#include <Progmasoft/Catch3/Internal/MoveAndForward.hpp>
+
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
+            struct ChronometerConcept {
+                virtual void start() = 0;
+                virtual void finish() = 0;
+                virtual ~ChronometerConcept(); // = default;
+
+                ChronometerConcept() = default;
+                ChronometerConcept(ChronometerConcept const&) = default;
+                ChronometerConcept& operator=(ChronometerConcept const&) = default;
+            };
+            template <typename Clock>
+            struct ChronometerModel final : public ChronometerConcept {
+                void start() override { started = Clock::now(); }
+                void finish() override { finished = Clock::now(); }
+
+                IDuration elapsed() const {
+                    return std::chrono::duration_cast<std::chrono::nanoseconds>(
+                        finished - started );
+                }
+
+                TimePoint<Clock> started;
+                TimePoint<Clock> finished;
+            };
+        } // namespace Detail
+
+        struct Chronometer {
+        public:
+            template <typename Fun>
+            void measure(Fun&& fun) { measure(CATCH_FORWARD(fun), is_callable<Fun(int)>()); }
+
+            int runs() const { return repeats; }
+
+            Chronometer(Detail::ChronometerConcept& meter, int repeats_)
+                : impl(&meter)
+                , repeats(repeats_) {}
+
+        private:
+            template <typename Fun>
+            void measure(Fun&& fun, std::false_type) {
+                measure([&fun](int) { return fun(); }, std::true_type());
+            }
+
+            template <typename Fun>
+            void measure(Fun&& fun, std::true_type) {
+                Detail::optimizer_barrier();
+                impl->start();
+                for (int i = 0; i < repeats; ++i) invoke_deoptimized(fun, i);
+                impl->finish();
+                Detail::optimizer_barrier();
+            }
+
+            Detail::ChronometerConcept* impl;
+            int repeats;
+        };
+    } // namespace Benchmark
+} // namespace Catch
+
diff --git a/src/Progmasoft/Catch3/Benchmark/Clock.hpp b/src/Progmasoft/Catch3/Benchmark/Clock.hpp
new file mode 100644
index 00000000..b2cca2e9
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Clock.hpp
@@ -0,0 +1,25 @@
+
+//              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.
+
+#pragma once
+
+#include <chrono>
+
+namespace Catch {
+    namespace Benchmark {
+        using IDuration = std::chrono::nanoseconds;
+        using FDuration = std::chrono::duration<double, std::nano>;
+
+        template <typename Clock>
+        using TimePoint = typename Clock::time_point;
+
+        using default_clock = std::chrono::steady_clock;
+    } // namespace Benchmark
+} // namespace Catch
+
diff --git a/src/Progmasoft/Catch3/Benchmark/Constructor.hpp b/src/Progmasoft/Catch3/Benchmark/Constructor.hpp
new file mode 100644
index 00000000..5d054620
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Constructor.hpp
@@ -0,0 +1,80 @@
+
+//              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.
+
+#pragma once
+
+#include <Progmasoft/Catch3/Internal/MoveAndForward.hpp>
+
+#include <type_traits>
+
+namespace Catch {
+    namespace Benchmark {
+        namespace Detail {
+            template <typename T, bool Destruct>
+            struct ObjectStorage
+            {
+                ObjectStorage() = default;
+
+                ObjectStorage(const ObjectStorage& other)
+                {
+                    new(&data) T(other.stored_object());
+                }
+
+                ObjectStorage(ObjectStorage&& other)
+                {
+                    new(data) T(CATCH_MOVE(other.stored_object()));
+                }
+
+                ~ObjectStorage() { destruct_on_exit<T>(); }
+
+                template <typename... Args>
+                void construct(Args&&... args)
+                {
+                    new (data) T(CATCH_FORWARD(args)...);
+                }
+
+                template <bool AllowManualDestruction = !Destruct>
+                std::enable_if_t<AllowManualDestruction> destruct()
+                {
+                    stored_object().~T();
+                }
+
+            private:
+                // If this is a constructor benchmark, destruct the underlying object
+                template <typename U>
+                void destruct_on_exit(std::enable_if_t<Destruct, U>* = nullptr) { destruct<true>(); }
+                // Otherwise, don't
+                template <typename U>
+                void destruct_on_exit(std::enable_if_t<!Destruct, U>* = nullptr) { }
+
+#if defined( __GNUC__ ) && __GNUC__ <= 6
+#    pragma GCC diagnostic push
+#    pragma GCC diagnostic ignored "-Wstrict-aliasing"
+#endif
+                T& stored_object() { return *reinterpret_cast<T*>( data ); }
+
+                T const& stored_object() const {
+                    return *reinterpret_cast<T const*>( data );
+                }
+#if defined( __GNUC__ ) && __GNUC__ <= 6
+#    pragma GCC diagnostic pop
+#endif
+
+                alignas( T ) unsigned char data[sizeof( T )]{};
+            };
+        } // namespace Detail
+
+        template <typename T>
+        using storage_for = Detail::ObjectStorage<T, true>;
+
+        template <typename T>
+        using destructable_object = Detail::ObjectStorage<T, false>;
+    } // namespace Benchmark
+} // namespace Catch
+
diff --git a/src/Progmasoft/Catch3/Benchmark/Detail/Analyse.cpp b/src/Progmasoft/Catch3/Benchmark/Detail/Analyse.cpp
new file mode 100644
index 00000000..eb1e2847
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Detail/Analyse.cpp
@@ -0,0 +1,85 @@
+
+//              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 <Progmasoft/Catch3/Benchmark/Detail/Analyse.hpp>
+#include <Progmasoft/Catch3/Benchmark/Clock.hpp>
+#include <Progmasoft/Catch3/Benchmark/SampleAnalysis.hpp>
+#include <Progmasoft/Catch3/Benchmark/Detail/Stats.hpp>
+#include <Progmasoft/Catch3/Interfaces/IConfig.hpp>
+#include <Progmasoft/Catch3/Internal/MoveAndForward.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
diff --git a/src/Progmasoft/Catch3/Benchmark/Detail/Analyse.hpp b/src/Progmasoft/Catch3/Benchmark/Detail/Analyse.hpp
new file mode 100644
index 00000000..1310a582
--- /dev/null
+++ b/src/Progmasoft/Catch3/Benchmark/Detail/Analyse.hpp
@@ -0,0 +1,25 @@
+
+//              Copyright Catch2 Authors