Rotation revisited: A shocking discovery about gcc’s unidirectional rotation algorithm
Summary
Rotation revisited discusses a surprising finding about gcc libstdc++'s unidirectional rotation algorithm, showing it is effectively the same as the forward-iterator algorithm. The post compares implementations, explains swap behavior with concrete illustrations, and notes subtle differences in directionality and recursion. It highlights compiler/kernel-level insights and the interconnectedness of seemingly different approaches in open-source code.