r_less            264 range.c        	while (r_less(v, e) < 0) {
r_less            270 range.c        	while ((c = r_less(v, e)) <= 0) {
r_less           1205 range.c            if (r_less(beg, val) <= 0) {
r_less           1207 range.c        	if (r_less(val, end) <= -excl)