95         return traits().less_x_2_object()(a->p.x_part, b->p.x_part);  in operator()
116              (b->p.x_part, a->p.x_part);  in operator()
243     Point_2 x_part;// the x coordinate of the point  member
248       : x_part(Point_2(0,0)), y_part(Point_2(0,0)), original(Point_2(0,0)) {}  in Internal_point()
251       : x_part(Point_2(x,y)), y_part(Point_2(x,y)), original(Point_2(x,y)) {}  in Internal_point()
254        : x_part(p), y_part(p), original(p) {}  in Internal_point()
336              (b.x_part, a.x_part);  in operator()
367         return traits().less_x_2_object()(a.x_part, b.x_part);  in operator()
393            (a->p.x_part, b->p.x_part);  in larger_xy()
409       return traits().less_x_2_object()(b->p.x_part, a->p.x_part);  in larger_yx()
865   Iso_rectangle_2 rec(less_xy_point(px0,px1) ? px0.x_part : px1.x_part,  in check_for_larger()
866                       less_xy_point(px0,px1) ? px1.x_part : px0.x_part,  in check_for_larger()
1290            less_xy_point(left_p.x_part,right_p.x_part) ?  in get_largest_empty_iso_rectangle()
1291                  left_p.x_part : right_p.x_part,  in get_largest_empty_iso_rectangle()
1292            less_xy_point(left_p.x_part,right_p.x_part) ?  in get_largest_empty_iso_rectangle()
1293                  right_p.x_part : left_p.x_part,  in get_largest_empty_iso_rectangle()
1294            less_yx_point(bottom_p.x_part,top_p.x_part) ?  in get_largest_empty_iso_rectangle()
1296            less_yx_point(bottom_p.x_part,top_p.x_part) ?  in get_largest_empty_iso_rectangle()
1358   init(bl.x_part,tr.x_part);  in Largest_empty_iso_rectangle_2()