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| author | Devtools Arcadia <arcadia-devtools@yandex-team.ru> | 2022-02-07 18:08:42 +0300 |
|---|---|---|
| committer | Devtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net> | 2022-02-07 18:08:42 +0300 |
| commit | 1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch) | |
| tree | e26c9fed0de5d9873cce7e00bc214573dc2195b7 /util/generic/benchmark/log2/main.cpp | |
| download | ydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz | |
intermediate changes
ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'util/generic/benchmark/log2/main.cpp')
| -rw-r--r-- | util/generic/benchmark/log2/main.cpp | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/util/generic/benchmark/log2/main.cpp b/util/generic/benchmark/log2/main.cpp new file mode 100644 index 00000000000..969f09a3090 --- /dev/null +++ b/util/generic/benchmark/log2/main.cpp @@ -0,0 +1,140 @@ +#include <library/cpp/testing/benchmark/bench.h> + +#include <library/cpp/fast_log/fast_log.h> + +#include <util/generic/singleton.h> +#include <util/generic/vector.h> +#include <util/random/fast.h> +#include <util/generic/xrange.h> + +#include <cmath> +namespace { + template <typename T, size_t N> + struct TExamplesHolder { + TVector<T> Examples; + + TExamplesHolder() + : Examples(N) + { + TFastRng<ui64> prng{N * 42}; + for (auto& x : Examples) { + x = prng.GenRandReal4() + prng.Uniform(1932); // 1934 is just a random number + } + } + }; +} + +#define DEFINE_BENCHMARK(type, count) \ + Y_CPU_BENCHMARK(libm_log2f_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(log2f(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(libm_logf_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(logf(e)); \ + } \ + } \ + } \ + Y_CPU_BENCHMARK(STL_Log2_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(std::log2(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(STL_Log_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(std::log(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(Fast_Log2_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(FastLog2f(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(FastLogf##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(FastLogf(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(Faster_Log2_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(FasterLog2f(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(Faster_Log_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(FasterLogf(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(Fastest_Log2f_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(FastestLog2f(e)); \ + } \ + } \ + } \ + \ + Y_CPU_BENCHMARK(Fastest_Log_##type##_##count, iface) { \ + const auto& examples = Default<TExamplesHolder<type, count>>().Examples; \ + for (const auto i : xrange(iface.Iterations())) { \ + Y_UNUSED(i); \ + for (const auto e : examples) { \ + Y_DO_NOT_OPTIMIZE_AWAY(FastestLogf(e)); \ + } \ + } \ + } + +DEFINE_BENCHMARK(float, 1) +DEFINE_BENCHMARK(float, 2) +DEFINE_BENCHMARK(float, 4) +DEFINE_BENCHMARK(float, 8) +DEFINE_BENCHMARK(float, 16) +DEFINE_BENCHMARK(float, 32) +DEFINE_BENCHMARK(float, 64) +DEFINE_BENCHMARK(float, 128) +DEFINE_BENCHMARK(float, 256) +DEFINE_BENCHMARK(float, 1024) +DEFINE_BENCHMARK(float, 2048) +DEFINE_BENCHMARK(float, 4096) + +#undef DEFINE_BENCHMARK |