replace real with double.

record noeq MPM2(real[] ticker) {
  record Juicer(real lossTolerance, real pullback /*, real smoothing*/) {}

  //class OpenOrder { real openingTime, direction; }
  //class Position { OpenOrder openOrder; real crest, profit; }

  record Position(real openingTime, real direction) {
    real openingPrice() { ret ticker(openingTime); }
  }

  record Eye(real width, real height, real interval) {}

  real ticker(real time) { ret ticker(iceil(time)); }

  // all "profit" functions return a positive or negative percent value
  real profit(Position p, real time) {
    ret (ticker(time)/p.openingPrice()*100-100)*p.direction;
  }

  real closingTime(Position p, Juicer j) {
    int time = iceil(p.openingTime);
    real openingPrice = ticker(time);
    real crest = -infinity();
    while (time < ticker.length) {
      real profit = profit(p, time);
      crest = max(crest, profit);
      if (profit < -j.lossTolerance || profit <= crest-j.pullback) break;
      ++time;
    }
    ret time;
  }

  real profit(Position p, Juicer j) {
    ret profit(p, closingTime(p, j));
  }

  real profitability(real time, Juicer j) {
    ret max(
      profit(new Position(time, -1), j), 
      profit(new Position(time,  1), j));
  }
}

ret new MPM2;