Writing my own library.....in C?

I need to write my own math library for embedded computation that I need since I don't need all the functionality that comes with the compiler.


I am using two compilers Visual c++, to test my C codes and Code Composer for the embedded processor.


Can you tell me how I can do that in both visual c++ and code composer?


Thanks

Writing my own library.....in C?
See this link .





http://www.cs.cf.ac.uk/Dave/C/node35.htm...


http://zone.ni.com/devzone/cda/tut/p/id/...