C18 user defined Library

hello freelancers, here is a very simple project, we need user defined functions for c18 compiler, actually we want to build our own library which we want to use in future for programming of PIC microcontrollers. For example there was a problem in c18 for conversion of float to string so we made our own function named 'float2string'. We now want our own library for text lcd, serial, usb, graphic lcd, pwm generation etc, more than 100 functions are required, we will explain that to potential bidders. only apply if you are good in C language and send us some functions that you have already created for your own use. time limit is flexible so don't worry about that. regards