Function TimestampType

cpp/src/arrow/type.h:1751–1752

  int bit_width() const override { return static_cast<int>(sizeof(int64_t) * CHAR_BIT); }

  explicit TimestampType(TimeUnit::type unit = TimeUnit::MILLI)
      : TemporalType(Type::TIMESTAMP), unit_(unit) {}

  explicit TimestampType(TimeUnit::type unit, const std::string& timezone)
      : TemporalType(Type::TIMESTAMP), unit_(unit), timezone_(timezone) {}