MACD线下3金叉的选股公式

老师们，请教MACD线下3金叉的选股公式应怎样写呀

爱约股解答：

DIFF := EMA(CLOSE,12) - EMA(CLOSE,26);

DEA  : =EMA(DIFF,9);

MACD : =2*(DIFF-DEA);

macd线下三金:CROSS(DIFF,DEA) AND COUNT(CROSS(DIFF,DEA),BARSLAST(DEA>=0))=3;