Using Standard Library Function_CC-RX
Question:
I am using RX Compiler CC-RX.
When including the header file math.h for using the standard library function cosf(), the following error message appeared.
E0562310 Undefined external symbol "symbol" referenced in "file"
Answer:
To use standard library functions in CC-RX, you need to add #include in a source file and specify the [Library Generate Options] settings.
Select the [Library Generate Options] tab in the CC-RX (build tool) property dialog on CS+ >> [Standard Library] >> select [Yes] for [Enables math.h(C89/C99)], then execute building.
For using single-precision operations for all data, select mathf.h. For double-precision operations, select math.h.
If the same error occurs with the other standard library functions, you can resolve it by enabling the necessary standard library.
Related FAQ:
Description about inclusion of the header file in the standard library (CC-RL)
What to do if the expected result of standard CC-RX is not obtained?
| C/C++ Compiler Package for RX Family |