252     const IntervalType2& interval2) {  in equivalence()  argument
253   return (get(interval1, LOW) == get(interval2, LOW)) &&  in equivalence()
254          (get(interval1, HIGH) == get(interval2, HIGH));  in equivalence()
295     const IntervalType2& interval2,  in contains()  argument
297   return contains(interval1, get(interval2, LOW), consider_touch) &&  in contains()
298          contains(interval1, get(interval2, HIGH), consider_touch);  in contains()
619     const IntervalType2& interval2) {  in euclidean_distance()  argument
623       (Unit)low(interval1) - (Unit)high(interval2),  in euclidean_distance()
624       (Unit)low(interval2) - (Unit)high(interval1)  in euclidean_distance()
645     const IntervalType2& interval2,  in intersects()  argument
648       (low(interval1) <= high(interval2)) &&  in intersects()
649       (high(interval1) >= low(interval2)) :  in intersects()
650       (low(interval1) < high(interval2)) &&  in intersects()
651       (high(interval1) > low(interval2));  in intersects()
670     const IntervalType2& interval2,  in boundaries_intersect()  argument
672   return (contains(interval1, low(interval2), consider_touch) ||  in boundaries_intersect()
673           contains(interval1, high(interval2), consider_touch)) &&  in boundaries_intersect()
674          (contains(interval2, low(interval1), consider_touch) ||  in boundaries_intersect()
675           contains(interval2, high(interval1), consider_touch));  in boundaries_intersect()
751     const IntervalType2& interval2,  in abuts()  argument
753   return dir.to_int() ? low(interval2) == high(interval1) :  in abuts()
754                         low(interval1) == high(interval2);  in abuts()
773     const IntervalType2& interval2) {  in abuts()  argument
774   return abuts(interval1, interval2, HIGH) ||  in abuts()
775          abuts(interval1, interval2, LOW);  in abuts()
865 >::type encompass(IntervalType1& interval1, const IntervalType2& interval2) {  in encompass()  argument
866   bool retval = !contains(interval1, interval2, true);  in encompass()
867   low(interval1, (std::min)(low(interval1), low(interval2)));  in encompass()
868   high(interval1, (std::max)(high(interval1), high(interval2)));  in encompass()
924 >::type join_with(IntervalType1& interval1, const IntervalType2& interval2) {  in join_with()  argument
925   if (abuts(interval1, interval2)) {  in join_with()
926     encompass(interval1, interval2);  in join_with()