How can C developers use decimal data types?

Using Decimal Data Types in C

In C , there is currently no direct support for decimal data types like decimal32, decimal64, or decimal128. However, some compilers, such as gcc, implement the C Decimal Technical Report (TR), which provides these extensions.

If your compiler does not support these decimal types, there is an open-source implementation available for the C Decimal TR. Alternatively, you can create a wrapper for IBM's decNumber library to achieve similar functionality.

However, a more promising long-term solution is an updated version of the Decimal TR that is currently being proposed for the next C committee meeting. If adopted into the C standard, this would provide a standardized approach to using decimal data types in C .

In the meantime, it is recommended to use the available open-source implementation or wrap the existing decNumber library for your specific use case. Monitoring the progress of the proposed update to the Decimal TR is also advisable for future developments in this area.

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