• first_less() : rsdl_kd_tree.cxx
• operator<<() : rsdl_point.h, rsdl_point.cxx, rsdl_bounding_box.h, rsdl_bounding_box.cxx, rsdl_bins_2d.txx, rsdl_bins_2d.h
• rsdl_dist() : rsdl_dist.h, rsdl_dist.cxx
• rsdl_dist_box_relation() : rsdl_dist.h, rsdl_dist.cxx
• rsdl_dist_point_in_box() : rsdl_dist.h, rsdl_dist.cxx
• rsdl_dist_sq() : rsdl_dist.h, rsdl_dist.cxx

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