DMA函数，评论超长，分成二段

Params
   Numeric TPrice;
   Numeric Weight;
Vars
   Series<Numeric> Result;
Begin
   If (CurrentBar == 0)
   {
         If (Weight > 0 && Weight < 1)
        {
            Result = TPrice;
        }
         Else 
         {
               Result = InvalidNumeric;
         }
   }

   Else
   { 
         If ( TPrice==InvalidNumeric && Weight > 0 && Weight < 1)
         {
               Result = TPrice;
         }
         Else If (TPrice==InvalidNumeric)
         {
               Result = Result[1];
         }
         Else If (Weight < 0)
         {
               Result = Result[1];
         }

         Else If (Weight > 1)
         {
               Result = TPrice; 
         }
         Else
         {
               Result = Weight * TPrice + ( 1 - Weight ) * Result[1]; //DMA计算公式
         }
   }
Return Result;
End 

DDD : MA(CLOSE,SHORT)-MA(CLOSE,LONG);//短周期收盘价均值与长周期收盘价均值做差

AMA : MA(DDD,M);//M个周期的DDD均值

软件里似乎有DMA