Function GenerateRandomPackedValues

cpp/src/arrow/util/bpacking_benchmark.cc:49–57

Generate random bytes as packed integers.

/// Generate random bytes as packed integers.
std::vector<uint8_t> GenerateRandomPackedValues(int32_t num_values, int32_t bit_width) {
  constexpr uint32_t kSeed = 3214;
  const auto num_bytes = GetNumBytes(num_values, bit_width);

  std::vector<uint8_t> out(num_bytes);
  random_bytes(num_bytes, kSeed, out.data());

  return out;
}

const uint8_t* GetNextAlignedByte(const uint8_t* ptr, std::size_t alignment) {
  auto addr = reinterpret_cast<std::uintptr_t>(ptr);