compare

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CGAL::compare_x

Comparison_result	compare_x ( Point_2<Kernel> p, Point_2<Kernel> q)
		compares the x-coordinates of p and q.

Comparison_result	compare_x ( Point_3<Kernel> p, Point_3<Kernel> q)
		compares the x-coordinates of p and q.

Comparison_result	compare_x ( Point_2<Kernel> p, Line_2<Kernel> l1, Line_2<Kernel> l2)
		compares the x-coordinates of p and the intersection of lines l1 and l2, see (a) in the figure below.

Comparison_result	compare_x ( Line_2<Kernel> l, Line_2<Kernel> h1, Line_2<Kernel> h2)
		compares the x-coordinates of the intersection of line l with line h1 and with line h2, see (b) in the figure below.

Comparison_result	compare_x ( Line_2<Kernel> l1, Line_2<Kernel> l2, Line_2<Kernel> h1, Line_2<Kernel> h2)
		compares the x-coordinates of the intersection of lines l1 and l2 and the intersection of lines h1 and h2, see (c) in the figure below.

Comparison of the x
or y coordinates of the (implicitly given) points in the boxes