Function MakeRandomBytes

cpp/src/arrow/util/rle_bitmap_test.cc:36–44

Make a vector of `size` pseudo-random bytes, deterministic for a given `seed`.

/// Make a vector of `size` pseudo-random bytes, deterministic for a given `seed`.
std::vector<uint8_t> MakeRandomBytes(size_t size, uint32_t seed = 56) {
  std::vector<uint8_t> bytes(size);
  std::minstd_rand gen(seed);
  std::uniform_int_distribution<int> dist(0, 255);  // no standard support for uint8_t
  for (auto& byte : bytes) {
    byte = static_cast<uint8_t>(dist(gen));
  }
  return bytes;
}

/// Read the first `count` bits of `bytes` (LSB first) into a vector of booleans.
std::vector<bool> BitsFromBytes(const std::vector<uint8_t>& bytes, rle_size_t count) {