message: Change RNG to mt19937_64
diff: @@ -42,7 +42,7 @@ static inline std::vector<T>
  _gen_rand_(std::size_t n, const RandGenParams<T> &params, D &&dist) {
  std::random_device rd;
  - std::mt19937 gen(rd());
  + std::mt19937_64 gen(rd());
  if (params.seed != static_cast<unsigned int>(-1)) gen.seed(params.seed);
  