The function ch_ns_point finds the points of a given set of input points with minimal and maximal coordinates.
|traverses the range [first,beyond). After execution, the value of n is an iterator in the range such that *n *it for all iterators it in the range. Similarly, for s the inequality *s *it holds for all iterators in the range.|
The default traits class Default_traits is the kernel in which the type ForwardIterator::value_type is defined.