Hi,
There is source code available for every single library function with mikroC. Check the examples and projects and the help menu as well. It's all given there. It's available both in full and free versions.
For that do write a code in C using the library function in MikroC. Compile the program. You'll get output files in the project files window of the project Summary window. One of the output file obtained is in the format 'project name.asm'. By opening that file you can see the code of the library function in MikroC in assembly language.
Regards,
Jerin. ;-)
MikroElektronika libraries are closed... Imagine if libraries are open source, MikroC is dead (you could easily use all libraries with another free compiler...)!
Regards
Blaise