Mylena 0 Light Poster

Hello,
Could anybody please advise me where I can find examples of high precision floating operators, where I can clearly see the binary schifts. I've learned binary basics, but I have no idea how to write this High Precision Floating operators. (+,-,*,/,etc). I downloaded GMP library, but it didn't have a clear code for operators that I could look at.
Any help will be appreciated...
Thanks!
M