Manually add, subtract, multiply, and divide amounts and convert units (yuan and cents) . The result is usually a waste of resources. To break it down a bit, the most common situations are as follows: Manual unit conversion results in an increase or decrease in an amount by a factor of . For example, everyone has specified that the information should be transmitted in yuan, but one of the students forgot and thought that the information should be transmitted in points. Or vice versa. In another case, the smallest unit of a currency, such as the Japanese yen, is yuan.
If the system agrees to transmit cents, and the external channel australia email list requests a transfer of yuan, it can be manually multiplied by during the processing of the pass. The issue of cent ownership .calculating handling fees, when division is not possible, should we use rounding, rounding to zero, or banker's rounding? It depends on the financial strategy. Precision is lost . When the amount is large, doubling may suffer from loss of precision. Best practices: Develop a money class appropriate to the company's business to manage the amounts evenly.
After the input gateway receives the request, it is converted to the Money class. All internal processing of the application's amount is forced to use the calculations and transfers of the Money type, and manual addition, subtraction, multiplication and division, and unit conversion (such as yuan to cents) are prohibited. The database is stored using the DECIMAL type, and the storage unit is yuan.When leaving the outbound gateway, it is converted to the specified unit according to the requirements of the external interface document. Some are yuan, some are cents (the smallest monetary unit) 6.