The function ch_we_point finds two points of a given set of input points with minimal and maximal coordinates.
|traverses the range [first,beyond). After execution, the value of w is an iterator in the range such that *w *it for all iterators it in the range. Similarly, for e the inequality *e *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.