code: public static int completeCircularPasses(int index, int seqLength) {
  		int count = 0;
  		while (index > seqLength) {
  			count++;
  			index -= seqLength;
  		}
  		return count - 1;
  	}
docs: Works in a similar way to modulateCircularLocation but returns
  the number of complete passes over a Sequence length a circular
  location makes i.e. if we have a sequence of length 10 and the
  location 3..52 we make 4 complete passes through the genome to
  go from position 3 to position 52.