Great post. But it's lack of explanations in type qualifiers and storage specifiers. C declaration is not easy for beginners but surely is one of the most important subjects towards optimisations. Correct usage of const and restrict keywords let compiler optimise your code super fast for free. Check my post for example usage of type qualifiers and how the syntax is structured in C: http://www.idryman.org/blog/2012/10/29/type-qualifiers/