These functions are called by other functions in the standard C library and must be modified for
the target application. The corresponding object modules are
distributed in the libpic30-omf.a
archive and the source code (for the compiler) is available in
the src\pic30 folder.
For a detailed list of Standard C library helper functions, see the “Microchip Unified Standard Library Reference Guide” (DS-50003209), “Syscall Interface” chapter.