Replacing Built-In EasyC Functions

Is it possible to overwrite a built-in EasyC function so that all references to the function result in the new function being used.
For example, I would like to replace GetJotstickAnalog so that all EasyC functions that use the analog sticks (the drive functions, JosticktoMotor, etc) would be affected as well. Would this work?

Possible, but extreme skill needed. You have to modify the runtime library and remove the existing function. Not something I can really explain, sorry.

I agree that would be hard. But I’ll bite, why would you want to do that? Is there “better code” that you are putting in place?