# µC/LIB ASCII Library

µC/LIB contains library functions that replace standard library character classification and case conversion functions and macros such as tolower(), toupper(), isalpha(), isdigit(), etc. Character classification functions and macros determine whether a character belongs to a certain class of character (e.g., uppercase alphabetic characters). Character case conversion functions and macros convert a character from uppercase to lowercase or lowercase to uppercase. These functions are defined in lib_ascii.c.