MACD零轴下首次死叉选股公式

编写要求：

MACD零轴下首次死叉选股公式.

股海网解答：

CROSS("MACD.DEA","MACD.DIF") AND "MACD.DEA"<0 AND COUNT(CROSS("MACD.DEA","MACD.DIF")
AND "MACD.DEA"<0,BARSLAST(CROSS(0,"MACD.DEA")))=1;