把底背离指标改个通达信的

编写要求：

源码如下：{底背离}INPUT:N(20,0,80);{1.MACD}DIFF :=EMA(CLOSE,7) - EMA(CLOSE,13);DEA := EMA(DIFF,3);MACD := 2*(DIFF-DEA);A1:=BARSLAST(REF(CROSS(DIFF,DEA),1));B1:=REF(C,A1+1)>C AND REF(DIFF,A1+1)C AND REF(K,A2+1)C AND REF(RSI1,A3+1)REF(CCI4,1) AND CROSS(CCI4,-100); { CCI底背离'}XG:((B1 AND B2) OR (B2 AND B3) OR (B1 AND B3) OR ( B4 AND CCI4<-90) ) AND D

解答：

N:=20;