Actual code of the inbuilt functions..............

Hi Everyone,

The functions such as EEPROM.read
Serial.println() are used directly to read data from EEPROM and printing it with the help of serial port. We are using these inbuilt functions directly.

But if i have to implemet the functions performed by the inbuilt functions in some other software such as LabVIEW i need to know the exact code of the functions EEPROM.read
Serial.println(). I mean what exactly code for these function.

Where can i find the codes of these functions. If anyone knows please let me know about it.

Thanks for the help.