ta_sma.c

股票主要技术指标源码

									           cli::array<INPUT_TYPE>^ inReal, 
								               int     optInTimePeriod,
								               [Out]int% outBegIdx, 
								               [Out]int% outNBElement,
											   cli::array<double>^  outReal)
#elif defined( _JAVA )
RetCode TA_INT_SMA( int    startIdx,
                    int    endIdx,
                    INPUT_TYPE inReal[],
                    int      optInTimePeriod, /* From 1 to TA_INTEGER_MAX */                       
                    MInteger outBegIdx,
                    MInteger outNBElement,
                    double   outReal[] )
#else
TA_RetCode TA_PREFIX(INT_SMA)( int    startIdx,
                               int    endIdx,
                               const INPUT_TYPE *inReal,
                               int      optInTimePeriod, /* From 1 to TA_INTEGER_MAX */                       
                               int     *outBegIdx,
                               int     *outNBElement,
                               double  *outReal )
#endif
{
   double periodTotal, tempReal;
   int i, outIdx, trailingIdx, lookbackTotal;

   /* Identify the minimum number of price bar needed
    * to calculate at least one output.
    */
   lookbackTotal = (optInTimePeriod-1);

   /* Move up the start index if there is not
    * enough initial data.
    */
   if( startIdx < lookbackTotal )
      startIdx = lookbackTotal;

   /* Make sure there is still something to evaluate. */
   if( startIdx > endIdx )
   {
      VALUE_HANDLE_DEREF_TO_ZERO(outBegIdx);
      VALUE_HANDLE_DEREF_TO_ZERO(outNBElement);
      return ENUM_VALUE(RetCode,TA_SUCCESS,Success);
   }

   /* Do the MA calculation using tight loops. */
   /* Add-up the initial period, except for the last value. */
   periodTotal = 0;
   trailingIdx = startIdx-lookbackTotal;
   
   i=trailingIdx;
   if( optInTimePeriod > 1 )
   {
      while( i < startIdx )
         periodTotal += inReal[i++];
   }

   /* Proceed with the calculation for the requested range.
    * Note that this algorithm allows the inReal and
    * outReal to be the same buffer.
    */
   outIdx = 0;
   do
   {
      periodTotal += inReal[i++];
      tempReal = periodTotal;
      periodTotal -= inReal[trailingIdx++];
      outReal[outIdx++] = tempReal / optInTimePeriod;
   } 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::Sma( int    startIdx,
/* Generated */                                     int    endIdx,
/* Generated */                                     cli::array<float>^ inReal,
/* Generated */                                     int           optInTimePeriod, /* From 2 to 100000 */
/* Generated */                                     [Out]int%    outBegIdx,
/* Generated */                                     [Out]int%    outNBElement,
/* Generated */                                     cli::array<double>^  outReal )
/* Generated */ #elif defined( _JAVA )
/* Generated */ public RetCode sma( int    startIdx,
/* Generated */                     int    endIdx,
/* Generated */                     float        inReal[],
/* Generated */                     int           optInTimePeriod, /* From 2 to 100000 */
/* Generated */                     MInteger     outBegIdx,
/* Generated */                     MInteger     outNBElement,
/* Generated */                     double        outReal[] )
/* Generated */ #else
/* Generated */ TA_RetCode TA_S_SMA( int    startIdx,
/* Generated */                      int    endIdx,
/* Generated */                      const float  inReal[],
/* Generated */                      int           optInTimePeriod, /* From 2 to 100000 */
/* Generated */                      int          *outBegIdx,
/* Generated */                      int          *outNBElement,
/* Generated */                      double        outReal[] )
/* Generated */ #endif
/* Generated */ {
/* 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( !inReal ) return ENUM_VALUE(RetCode,TA_BAD_PARAM,BadParam);
/* Generated */     #endif 
/* Generated */     if( (int)optInTimePeriod == TA_INTEGER_DEFAULT )
/* Generated */        optInTimePeriod = 30;
/* Generated */     else if( ((int)optInTimePeriod < 2) || ((int)optInTimePeriod > 100000) )
/* Generated */        return ENUM_VALUE(RetCode,TA_BAD_PARAM,BadParam);
/* Generated */     #if !defined(_JAVA)
/* Generated */     if( !outReal )
/* Generated */        return ENUM_VALUE(RetCode,TA_BAD_PARAM,BadParam);
/* Generated */     #endif 
/* Generated */  #endif 
/* Generated */   return FUNCTION_CALL(INT_SMA)( startIdx, endIdx,
/* Generated */                                  inReal, optInTimePeriod,
/* Generated */                                  outBegIdx, outNBElement, outReal ); 
/* Generated */ }
/* Generated */ #if defined( _MANAGED ) && defined( USE_SUBARRAY ) && !defined(USE_SINGLE_PRECISION_INPUT)
/* Generated */  enum class Core::RetCode Core::TA_INT_SMA( int     startIdx,
/* Generated */                                                int     endIdx,
/* Generated */ 									           SubArray^ inReal, 
/* Generated */ 								               int     optInTimePeriod,
/* Generated */ 								               [Out]int% outBegIdx, 
/* Generated */ 								               [Out]int% outNBElement,
/* Generated */ 											   cli::array<double>^  outReal)
/* Generated */ #elif defined( _MANAGED )
/* Generated */  enum class Core::RetCode Core::TA_INT_SMA( int     startIdx,
/* Generated */                                                int     endIdx,
/* Generated */ 									           cli::array<INPUT_TYPE>^ inReal, 
/* Generated */ 								               int     optInTimePeriod,
/* Generated */ 								               [Out]int% outBegIdx, 
/* Generated */ 								               [Out]int% outNBElement,
/* Generated */ 											   cli::array<double>^  outReal)
/* Generated */ #elif defined( _JAVA )
/* Generated */ RetCode TA_INT_SMA( int    startIdx,
/* Generated */                     int    endIdx,
/* Generated */                     INPUT_TYPE inReal[],
/* Generated */                     int      optInTimePeriod,                        
/* Generated */                     MInteger outBegIdx,
/* Generated */                     MInteger outNBElement,
/* Generated */                     double   outReal[] )
/* Generated */ #else
/* Generated */ TA_RetCode TA_PREFIX(INT_SMA)( int    startIdx,
/* Generated */                                int    endIdx,
/* Generated */                                const INPUT_TYPE *inReal,
/* Generated */                                int      optInTimePeriod,                        
/* Generated */                                int     *outBegIdx,
/* Generated */                                int     *outNBElement,
/* Generated */                                double  *outReal )
/* Generated */ #endif
/* Generated */ {
/* Generated */    double periodTotal, tempReal;
/* Generated */    int i, outIdx, trailingIdx, lookbackTotal;
/* Generated */    lookbackTotal = (optInTimePeriod-1);
/* 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 */    periodTotal = 0;
/* Generated */    trailingIdx = startIdx-lookbackTotal;
/* Generated */    i=trailingIdx;
/* Generated */    if( optInTimePeriod > 1 )
/* Generated */    {
/* Generated */       while( i < startIdx )
/* Generated */          periodTotal += inReal[i++];
/* Generated */    }
/* Generated */    outIdx = 0;
/* Generated */    do
/* Generated */    {
/* Generated */       periodTotal += inReal[i++];
/* Generated */       tempReal = periodTotal;
/* Generated */       periodTotal -= inReal[trailingIdx++];
/* Generated */       outReal[outIdx++] = tempReal / optInTimePeriod;
/* 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 ****/