{

for (auto _ : state)

{

xtensor<double, 2> result = xt::random::rand<double>({20, 20});

benchmark::DoNotOptimize(result.data());

}

{

for (auto _ : state)

{

xtensor<double, 2> result;

result.resize({20, 20});

std::uniform_real_distribution<double> dist(0, 1);

auto& engine = xt::random::get_default_random_engine();

for (auto& el : result.storage())

{

el = dist(engine);

}

benchmark::DoNotOptimize(result.data());

}

{

for (auto _ : state)

{

xarray<double> result = xt::random::rand<double>({20, 20});

benchmark::DoNotOptimize(result.data());

}