C28345 math double （long float）function release?

       2009, i use C28345 for application, and did not find any double math function supported from TI website, and so I
   write some math function such as sin(long float x), tan(long float x). now 2 years past, I think the support double(long
   float) math function should be ok from TI, can I download it from TI website? give me a link!
       I used CCS3.3, use C28346 as GEL file.
       Please help me, thank you.