Method Update

python/pyarrow/src/arrow/python/decimal.cc:233–248

    : precision_(precision), scale_(scale) {}

Status DecimalMetadata::Update(int32_t suggested_precision, int32_t suggested_scale) {
  const int32_t current_scale = scale_;
  scale_ = std::max(current_scale, suggested_scale);

  const int32_t current_precision = precision_;

  if (current_precision == std::numeric_limits<int32_t>::min()) {
    precision_ = suggested_precision;
  } else {
    auto num_digits = std::max(current_precision - current_scale,
                               suggested_precision - suggested_scale);
    precision_ = std::max(num_digits + scale_, current_precision);
  }

  return Status::OK();
}

Status DecimalMetadata::Update(PyObject* object) {
  bool is_decimal = PyDecimal_Check(object);