I did discover a readme.txt in the install_root\c6400\C_fastRTS directory. Here is what it says about inlining functions from the library ...
1. Include the header file "fastrts_i.h" in your file which performs the floating point operations
2. To enable Inlining, define the macro "INLINE_C". This can be done by going to
"Project->Build Options->Preprocessor" and add INLINE_C in the "Pre-define
Symbol{-d}" tab.
It is advisible to inline functions in loops. This will enable to loop to pipe-line, thus providing maximum performance. Inlining in control code may disproportionately increase code-size compared to performance gains.
That bit about Project->Build Options etc applies to older versions of Code Composer. The main point is you need to define the macro INLINE_C on the compiler command line.
Hope this helps ...
-George