Function high_bits

cpp/src/arrow/util/basic_decimal.h:638–644

\brief Get the high bits of the two's complement representation of the number.

  /// \brief Get the high bits of the two's complement representation of the number.
  constexpr int64_t high_bits() const {
#if ARROW_LITTLE_ENDIAN
    return static_cast<int64_t>(array_[1]);
#else
    return static_cast<int64_t>(array_[0]);
#endif
  }

  /// \brief Get the low bits of the two's complement representation of the number.
  constexpr uint64_t low_bits() const {