Function random_is_valid

cpp/src/arrow/testing/util.cc:67–74

}

void random_is_valid(int64_t n, double pct_null, std::vector<bool>* is_valid,
                     int random_seed) {
  pcg32_fast gen(random_seed);
  ::arrow::random::uniform_real_distribution<double> d(0.0, 1.0);
  is_valid->resize(n, false);
  std::generate(is_valid->begin(), is_valid->end(),
                [&d, &gen, &pct_null] { return d(gen) > pct_null; });
}

void random_bytes(int64_t n, uint32_t seed, uint8_t* out) {
  pcg32_fast gen(seed);