写个{求出KDJ金叉交点数值}的公式

请老师写个{求出kdj金叉交点数值}的公式:
当kdJ的k线上穿D线时两线交点的数值.

 

RSV:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;
K:SMA(RSV,3,1);
D:SMA(K,3,1);
J:3*K-2*D;
DRAWTEXT(crOSS(K,D),K*1.01,NUMTOSTRN(K,2)),COLORAA00FF,LINETHICK1;