ta_cdlhammer.c

股票主要技术指标源码

   BodyTrailingIdx = startIdx - TA_CANDLEAVGPERIOD(BodyShort);
   ShadowLongPeriodTotal = 0;
   ShadowLongTrailingIdx = startIdx - TA_CANDLEAVGPERIOD(ShadowLong);
   ShadowVeryShortPeriodTotal = 0;
   ShadowVeryShortTrailingIdx = startIdx - TA_CANDLEAVGPERIOD(ShadowVeryShort);
   NearPeriodTotal = 0;
   NearTrailingIdx = startIdx -1 - TA_CANDLEAVGPERIOD(Near);
   
   i = BodyTrailingIdx;
   while( i < startIdx ) {
        BodyPeriodTotal += TA_CANDLERANGE( BodyShort, i );
        i++;
   }
   i = ShadowLongTrailingIdx;
   while( i < startIdx ) {
        ShadowLongPeriodTotal += TA_CANDLERANGE( ShadowLong, i );
        i++;
   }
   i = ShadowVeryShortTrailingIdx;
   while( i < startIdx ) {
        ShadowVeryShortPeriodTotal += TA_CANDLERANGE( ShadowVeryShort, i );
        i++;
   }
   i = NearTrailingIdx;
   while( i < startIdx-1 ) {
        NearPeriodTotal += TA_CANDLERANGE( Near, i );
        i++;
   }
   i = startIdx;

   /* Proceed with the calculation for the requested range.
    * Must have:
    * - small real body
    * - long lower shadow
    * - no, or very short, upper shadow
    * - body below or near the lows of the previous candle
    * The meaning of "short", "long" and "near the lows" is specified with TA_SetCandleSettings;
    * outInteger is positive (1 to 100): hammer is always bullish;
    * the user should consider that a hammer must appear in a downtrend, while this function does not consider it
    */
   outIdx = 0;
   do
   {
        if( TA_REALBODY(i) < TA_CANDLEAVERAGE( BodyShort, BodyPeriodTotal, i ) &&                        // small rb
            TA_LOWERSHADOW(i) > TA_CANDLEAVERAGE( ShadowLong, ShadowLongPeriodTotal, i ) &&              // long lower shadow
            TA_UPPERSHADOW(i) < TA_CANDLEAVERAGE( ShadowVeryShort, ShadowVeryShortPeriodTotal, i ) &&    // very short upper shadow
            min( inClose[i], inOpen[i] ) <= inLow[i-1] + TA_CANDLEAVERAGE( Near, NearPeriodTotal, i-1 )  // rb near the prior candle's lows
          )
            outInteger[outIdx++] = 100;
        else
            outInteger[outIdx++] = 0;
        /* add the current range and subtract the first range: this is done after the pattern recognition 
         * when avgPeriod is not 0, that means "compare with the previous candles" (it excludes the current candle)
         */
        BodyPeriodTotal += TA_CANDLERANGE( BodyShort, i ) 
            - TA_CANDLERANGE( BodyShort, BodyTrailingIdx );
        ShadowLongPeriodTotal += TA_CANDLERANGE( ShadowLong, i ) 
            - TA_CANDLERANGE( ShadowLong, ShadowLongTrailingIdx );
        ShadowVeryShortPeriodTotal += TA_CANDLERANGE( ShadowVeryShort, i ) 
            - TA_CANDLERANGE( ShadowVeryShort, ShadowVeryShortTrailingIdx );
        NearPeriodTotal += TA_CANDLERANGE( Near, i-1 ) 
            - TA_CANDLERANGE( Near, NearTrailingIdx );
        i++; 
        BodyTrailingIdx++;
        ShadowLongTrailingIdx++;
        ShadowVeryShortTrailingIdx++;
        NearTrailingIdx++;
   } while( i <= endIdx );

   /* All done. Indicate the output limits and return. */
   VALUE_HANDLE_DEREF(outNBElement) = outIdx;
   VALUE_HANDLE_DEREF(outBegIdx)    = startIdx;

   return ENUM_VALUE(RetCode,TA_SUCCESS,Success);
}

/**** START GENCODE SECTION 5 - DO NOT DELETE THIS LINE ****/
/* Generated */ 
/* Generated */ #define  USE_SINGLE_PRECISION_INPUT
/* Generated */ #if !defined( _MANAGED ) && !defined( _JAVA )
/* Generated */    #undef   TA_PREFIX
/* Generated */    #define  TA_PREFIX(x) TA_S_##x
/* Generated */ #endif
/* Generated */ #undef   INPUT_TYPE
/* Generated */ #define  INPUT_TYPE float
/* Generated */ #if defined( _MANAGED )
/* Generated */ enum class Core::RetCode Core::CdlHammer( int    startIdx,
/* Generated */                                           int    endIdx,
/* Generated */                                           cli::array<float>^ inOpen,
/* Generated */                                           cli::array<float>^ inHigh,
/* Generated */                                           cli::array<float>^ inLow,
/* Generated */                                           cli::array<float>^ inClose,
/* Generated */                                           [Out]int%    outBegIdx,
/* Generated */                                           [Out]int%    outNBElement,
/* Generated */                                           cli::array<int>^  outInteger )
/* Generated */ #elif defined( _JAVA )
/* Generated */ public RetCode cdlHammer( int    startIdx,
/* Generated */                           int    endIdx,
/* Generated */                           float        inOpen[],
/* Generated */                           float        inHigh[],
/* Generated */                           float        inLow[],
/* Generated */                           float        inClose[],
/* Generated */                           MInteger     outBegIdx,
/* Generated */                           MInteger     outNBElement,
/* Generated */                           int           outInteger[] )
/* Generated */ #else
/* Generated */ TA_RetCode TA_S_CDLHAMMER( int    startIdx,
/* Generated */                            int    endIdx,
/* Generated */                            const float  inOpen[],
/* Generated */                            const float  inHigh[],
/* Generated */                            const float  inLow[],
/* Generated */                            const float  inClose[],
/* Generated */                            int          *outBegIdx,
/* Generated */                            int          *outNBElement,
/* Generated */                            int           outInteger[] )
/* Generated */ #endif
/* Generated */ {
/* Generated */     double BodyPeriodTotal, ShadowLongPeriodTotal, ShadowVeryShortPeriodTotal, NearPeriodTotal;
/* Generated */     int i, outIdx, BodyTrailingIdx, ShadowLongTrailingIdx, ShadowVeryShortTrailingIdx, NearTrailingIdx, lookbackTotal;
/* Generated */  #ifndef TA_FUNC_NO_RANGE_CHECK
/* Generated */     if( startIdx < 0 )
/* Generated */        return ENUM_VALUE(RetCode,TA_OUT_OF_RANGE_START_INDEX,OutOfRangeStartIndex);
/* Generated */     if( (endIdx < 0) || (endIdx < startIdx))
/* Generated */        return ENUM_VALUE(RetCode,TA_OUT_OF_RANGE_END_INDEX,OutOfRangeEndIndex);
/* Generated */     #if !defined(_JAVA)
/* Generated */     if(!inOpen||!inHigh||!inLow||!inClose)
/* Generated */        return ENUM_VALUE(RetCode,TA_BAD_PARAM,BadParam);
/* Generated */     #endif 
/* Generated */     #if !defined(_JAVA)
/* Generated */     if( !outInteger )
/* Generated */        return ENUM_VALUE(RetCode,TA_BAD_PARAM,BadParam);
/* Generated */     #endif 
/* Generated */  #endif 
/* Generated */    lookbackTotal = LOOKBACK_CALL(CDLHAMMER)();
/* Generated */    if( startIdx < lookbackTotal )
/* Generated */       startIdx = lookbackTotal;
/* Generated */    if( startIdx > endIdx )
/* Generated */    {
/* Generated */       VALUE_HANDLE_DEREF_TO_ZERO(outBegIdx);
/* Generated */       VALUE_HANDLE_DEREF_TO_ZERO(outNBElement);
/* Generated */       return ENUM_VALUE(RetCode,TA_SUCCESS,Success);
/* Generated */    }
/* Generated */    BodyPeriodTotal = 0;
/* Generated */    BodyTrailingIdx = startIdx - TA_CANDLEAVGPERIOD(BodyShort);
/* Generated */    ShadowLongPeriodTotal = 0;
/* Generated */    ShadowLongTrailingIdx = startIdx - TA_CANDLEAVGPERIOD(ShadowLong);
/* Generated */    ShadowVeryShortPeriodTotal = 0;
/* Generated */    ShadowVeryShortTrailingIdx = startIdx - TA_CANDLEAVGPERIOD(ShadowVeryShort);
/* Generated */    NearPeriodTotal = 0;
/* Generated */    NearTrailingIdx = startIdx -1 - TA_CANDLEAVGPERIOD(Near);
/* Generated */    i = BodyTrailingIdx;
/* Generated */    while( i < startIdx ) {
/* Generated */         BodyPeriodTotal += TA_CANDLERANGE( BodyShort, i );
/* Generated */         i++;
/* Generated */    }
/* Generated */    i = ShadowLongTrailingIdx;
/* Generated */    while( i < startIdx ) {
/* Generated */         ShadowLongPeriodTotal += TA_CANDLERANGE( ShadowLong, i );
/* Generated */         i++;
/* Generated */    }
/* Generated */    i = ShadowVeryShortTrailingIdx;
/* Generated */    while( i < startIdx ) {
/* Generated */         ShadowVeryShortPeriodTotal += TA_CANDLERANGE( ShadowVeryShort, i );
/* Generated */         i++;
/* Generated */    }
/* Generated */    i = NearTrailingIdx;
/* Generated */    while( i < startIdx-1 ) {
/* Generated */         NearPeriodTotal += TA_CANDLERANGE( Near, i );
/* Generated */         i++;
/* Generated */    }
/* Generated */    i = startIdx;
/* Generated */    outIdx = 0;
/* Generated */    do
/* Generated */    {
/* Generated */         if( TA_REALBODY(i) < TA_CANDLEAVERAGE( BodyShort, BodyPeriodTotal, i ) &&                        // small rb
/* Generated */             TA_LOWERSHADOW(i) > TA_CANDLEAVERAGE( ShadowLong, ShadowLongPeriodTotal, i ) &&              // long lower shadow
/* Generated */             TA_UPPERSHADOW(i) < TA_CANDLEAVERAGE( ShadowVeryShort, ShadowVeryShortPeriodTotal, i ) &&    // very short upper shadow
/* Generated */             min( inClose[i], inOpen[i] ) <= inLow[i-1] + TA_CANDLEAVERAGE( Near, NearPeriodTotal, i-1 )  // rb near the prior candle's lows
/* Generated */           )
/* Generated */             outInteger[outIdx++] = 100;
/* Generated */         else
/* Generated */             outInteger[outIdx++] = 0;
/* Generated */         BodyPeriodTotal += TA_CANDLERANGE( BodyShort, i ) 
/* Generated */             - TA_CANDLERANGE( BodyShort, BodyTrailingIdx );
/* Generated */         ShadowLongPeriodTotal += TA_CANDLERANGE( ShadowLong, i ) 
/* Generated */             - TA_CANDLERANGE( ShadowLong, ShadowLongTrailingIdx );
/* Generated */         ShadowVeryShortPeriodTotal += TA_CANDLERANGE( ShadowVeryShort, i ) 
/* Generated */             - TA_CANDLERANGE( ShadowVeryShort, ShadowVeryShortTrailingIdx );
/* Generated */         NearPeriodTotal += TA_CANDLERANGE( Near, i-1 ) 
/* Generated */             - TA_CANDLERANGE( Near, NearTrailingIdx );
/* Generated */         i++; 
/* Generated */         BodyTrailingIdx++;
/* Generated */         ShadowLongTrailingIdx++;
/* Generated */         ShadowVeryShortTrailingIdx++;
/* Generated */         NearTrailingIdx++;
/* Generated */    } while( i <= endIdx );
/* Generated */    VALUE_HANDLE_DEREF(outNBElement) = outIdx;
/* Generated */    VALUE_HANDLE_DEREF(outBegIdx)    = startIdx;
/* Generated */    return ENUM_VALUE(RetCode,TA_SUCCESS,Success);
/* Generated */ }
/* Generated */ 
/* Generated */ #if defined( _MANAGED )
/* Generated */ }}} // Close namespace TicTacTec.TA.Lib
/* Generated */ #endif
/**** END GENCODE SECTION 5 - DO NOT DELETE THIS LINE ****/