persistable srecord noeq PriceDigitizer2(PriceCells cells) {
  settable int cellNumber;
  settable bool verbose;
  
  // returns new digitized price
  double digitize(double price) {
    double cn = cells.toCellNumber(price);
    cellNumber = iroundTowards(cn, cellNumber);
    ret digitizedPrice();
  }
  
  double digitizedPrice() {
    ret cells.fromCellNumber(price);
  }
  
  // digitize price without looking at history
  double digitizeIndividually(double price) {
    double cn = cells.toCellNumber(price);
    ret fromCellNumber(round(cn));
  }
}