If you're reusing that nice general list you wrote ages ago with static inlines so that there isn't any function call overhead anyway, it's trivial, because you

If you're reusing that nice general list you wrote ages ago with static inlines so that there isn't any function call overhead anyway, it's trivial, because you change the "get next element" and "get prev element" functions and never worry about it again. Complicated algorithm != complicated coding technique. It's simple expression of smart algorithms.