Introduction to Real Time DSP

How to Write a Better C Code Use Simple Loops Avoid if statements in loops Avoid subroutine calls statements in loops Use inline subroutines Compiler inserts function directly into the caller's code stream(conceptually similar to what happens with a #define macro) Avoids the subroutine call over head (saving volatile variables) Increases code size Avoid division and modulo operations Use and (&) and shift when possible Use 5%/80% rule Program in Assembly the 5% of the lines of code of the projectthat take 80% of the CPU load. Try to change your code to fit existing assembly routines.73