Function decimal32

cpp/src/arrow/type.cc:3356–3358

}

std::shared_ptr<DataType> decimal32(int32_t precision, int32_t scale) {
  return std::make_shared<Decimal32Type>(precision, scale);
}

std::shared_ptr<DataType> decimal64(int32_t precision, int32_t scale) {
  return std::make_shared<Decimal64Type>(precision, scale);