message: Fix C++14 build.
diff: @@ -297,8 +297,8 @@ class Array {
  std::mt19937 g(seed);
  std::normal_distribution<double> distribution(mean, stddev);
  for (int64 i = 0; i < num_elements(); ++i) {
  - if constexpr (std::is_same<T, bool>()) {
  - values_[i] = distribution(g) > 0.0;
  + if (std::is_same<T, bool>()) {
  + values_[i] = static_cast<T>(distribution(g) > 0.0);
  } else {
  values_[i] = static_cast<T>(distribution(g));
  }
  