Decimal Data Types in C

C offers various data types to handle numeric values, but surprisingly, decimal data types are not natively supported. This can be a limitation when dealing with precise decimal values or when interfacing with systems that utilize decimal formats.

Implementation Options

While C doesn't provide built-in decimal types, there are two approaches to work with them:

1. C Decimal TR Extensions:

Certain compilers, like gcc, support the C Decimal Technical Report (C Decimal TR), which defines decimal data types (e.g., decimal32, decimal64, decimal128) and operations. However, not all compilers implement these extensions.

2. Third-Party Libraries:

If your compiler doesn't support the C Decimal TR, consider using third-party libraries such as IBM's decNumber. These libraries provide functions and data structures for manipulating decimal values with high precision.

Future Prospects

Efforts are underway to update the C Decimal TR and incorporate decimal types into the C standard. Once adopted, these types will become natively available in C . However, the timeframe for standardization and widespread implementation is uncertain.