anchor.diff:  highest_precision_archive(_TimeDiff, []) -> error.
   
   
  -data_point(#archive_header{seconds=S}, TimeStamp, Value) ->
  -    Interval = TimeStamp - (TimeStamp rem S),
  +data_point(Interval, Value) ->
       <<Interval:32/integer-unsigned-big, Value:64/float-big>>.
   
   
  
positive.code: do_update(IO, Value, TimeStamp) ->
      {ok, Metadata} = read_metadata_inner(IO),
      write_point(IO, Metadata, Value, TimeStamp).
  
  
  write_point(IO, Header, Value, TimeStamp) ->
  
negative.code:     end.
  
  
  mod(A, B) when A < 0 -> erlang:abs(A) rem B;
  mod(A, B) -> A rem B.
  
  
  get_data_point_offset(Archive, _Interval, 0) ->
      Archive#archive_header.offset;
  get_data_point_offset(Archive, Interval, BaseInterval) ->
      Distance = Interval - BaseInterval,
      PointDistance = Distance div Archive#archive_header.seconds,
      ByteDistance = PointDistance * ?POINT_SIZE,
      Archive#archive_header.offset + (mod(ByteDistance, Archive#archive_header.size)).
  
  
  update_point(File, Value, TimeStamp) ->
  