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The size of a circulator is the size of the data structure it refers to. It is zero for a circulator on an empty sequence. The size can be computed in linear time for forward and bidirectional circulators, and in constant time for random access circulators using the minimal circulator. The function circulator_size(c) returns the circulator size. It uses the c.min_circulator() function if c is a random access circulator.
#include <CGAL/circulator.h>
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circulator_distance, iterator_distance, is_empty_range, Circulator.