? roundArbitrarily
              : DoubleUtils.nextDown(roundArbitrarily);
        } else {
          return (cmpXToRoundArbitrarily <= 0) ? roundArbitrarily : Math.nextUp(roundArbitrarily);
        }
      case UP:
        if (sign(x) >= 0) {
          return (cmpXToRoundArbitrarily <= 0) ? roundArbitrarily : Math.nextUp(roundArbitrarily);
        } else {
          return (cmpXToRoundArbitrarily >= 0)