Function bench

test/nvexec/launch.cpp:45–51

#define scaling 2

    auto bench() -> int
    {
      std::vector<int> input(N, 0);
      std::iota(input.begin(), input.end(), 1);
      std::ranges::transform(input, input.begin(), [](int i) { return i * scaling; });
      return std::accumulate(input.begin(), input.end(), 0);
    }

    TEST_CASE("nvexec launch executes on GPU", "[cuda][stream][adaptors][launch]")
    {