how to reverse the circular linked list in c++?

i want to implement reverse()

template

class CircleList{

class Node{

T elem;

Node* next;

friend class CircleList;

};

private:

Node* cursor;

Node* availableList; // point at the first element in the available_space list

public:

..........

void reverse() {

// i want to know how to reverse circular linked list

}

};