/* TA-LIB Copyright (c) 1999-2025, Mario Fortier
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
*   notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
*   notice, this list of conditions and the following disclaimer in
*   the documentation and/or other materials provided with the
*   distribution.
*
* - Neither name of author nor the names of its contributors
*   may be used to endorse or promote products derived from this
*   software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/* AUTO-GENERATED by ta_codegen — DO NOT EDIT.
* Source of truth: ta_codegen/input/<name>/  (regenerate: cd ta_codegen/generator && cargo run -- generate)
*/

#include <string.h>
#include <math.h>
#include "ta_func.h"
#include "ta_utility.h"
#include "ta_memory.h"
#include "ta_func_unguarded.h"

/* List of contributors:
 *
 *  Initial  Name/description
 *  -------------------------------------------------------------------
 *  AC       Angelo Ciceri
 *
 *
 * Change history:
 *
 *  MMDDYY BY   Description
 *  -------------------------------------------------------------------
 *  120904 AC   Creation
 */

TA_LIB_API int TA_CDLDARKCLOUDCOVER_Lookback( double optInPenetration )
{
   int BodyLong_rangeType = TA_Globals->candleSettings[TA_BodyLong].rangeType;
   int BodyLong_avgPeriod = TA_Globals->candleSettings[TA_BodyLong].avgPeriod;
   double BodyLong_factor = TA_Globals->candleSettings[TA_BodyLong].factor;
   if( optInPenetration == -4e37 )
      optInPenetration = 0.5;
   else if( optInPenetration < 0e0 || optInPenetration > 1.7976931348623157e308 )
      return -1;
   return BodyLong_avgPeriod + 1;
}

TA_LIB_API TA_RetCode TA_CDLDARKCLOUDCOVER( int    startIdx,
                                            int    endIdx,
                                            const double inOpen[],
                                            const double inHigh[],
                                            const double inLow[],
                                            const double inClose[],
                                            double optInPenetration,
                                            int          *outBegIdx,
                                            int          *outNBElement,
                                            int        outInteger[] )
{
   double BodyLongPeriodTotal;
   int i;
   int outIdx;
   int BodyLongTrailingIdx;
   int lookbackTotal;
   int BodyLong_rangeType = TA_Globals->candleSettings[TA_BodyLong].rangeType;
   int BodyLong_avgPeriod = TA_Globals->candleSettings[TA_BodyLong].avgPeriod;
   double BodyLong_factor = TA_Globals->candleSettings[TA_BodyLong].factor;

   if( startIdx < 0 )
      return TA_OUT_OF_RANGE_START_INDEX;
   if( (endIdx < 0) || (endIdx < startIdx) )
      return TA_OUT_OF_RANGE_END_INDEX;

   if( !inOpen )
      return TA_BAD_PARAM;
   if( !inHigh )
      return TA_BAD_PARAM;
   if( !inLow )
      return TA_BAD_PARAM;
   if( !inClose )
      return TA_BAD_PARAM;
   if( optInPenetration == -4e37 )
      optInPenetration = 0.5;
   else if( optInPenetration < 0e0 || optInPenetration > 1.7976931348623157e308 )
      return TA_BAD_PARAM;
   if( !outInteger )
      return TA_BAD_PARAM;

   /* Identify the minimum number of price bar needed
    * to calculate at least one output.
    */
   lookbackTotal = TA_CDLDARKCLOUDCOVER_Lookback(optInPenetration);
   /* 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 )
   {
      *outBegIdx= 0;
      *outNBElement= 0;
      return TA_SUCCESS;
   }
   /* Do the calculation using tight loops. */
   /* Add-up the initial period, except for the last value. */
   BodyLongPeriodTotal = 0;
   BodyLongTrailingIdx = startIdx - BodyLong_avgPeriod;
   i = BodyLongTrailingIdx;
   while( i < startIdx )
   {
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1);
      i += 1;
   }
   i = startIdx;
   /* Proceed with the calculation for the requested range.
    * Must have:
    * - first candle: long white candle
    * - second candle: black candle that opens above previous day high and closes within previous day real body;
    * Greg Morris wants the close to be below the midpoint of the previous real body
    * The meaning of "long" is specified with TA_SetCandleSettings, the penetration of the first real body is specified
    * with optInPenetration
    * outInteger is negative (-1 to -100): dark cloud cover is always bearish
    * the user should consider that a dark cloud cover is significant when it appears in an uptrend, while
    * this function does not consider it
    */
   outIdx = 0;
   do
   {
      if( ((inClose[i - 1] >= inOpen[i - 1]) ? 1 : 0 - 1) == 1 && /* 1st: white */
          fabs(inClose[i - 1] - inOpen[i - 1]) > TA_CANDLEAVERAGE(BodyLong,BodyLongPeriodTotal,i - 1) && /* long */
          ((inClose[i] >= inOpen[i]) ? 1 : 0 - 1) == 0 - 1 &&     /* 2nd: black */
          inOpen[i] > inHigh[i - 1] &&                            /* open above prior high */
          inClose[i] > inOpen[i - 1] &&                           /* close within prior body */
          inClose[i] < inClose[i - 1] - fabs(inClose[i - 1] - inOpen[i - 1]) * optInPenetration )
      {
         outInteger[outIdx++] = 0 - 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)
       */
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1) - TA_CANDLERANGE(BodyLong,BodyLongTrailingIdx - 1);
      i += 1;
      BodyLongTrailingIdx += 1;
   } while( i <= endIdx );
   /* All done. Indicate the output limits and return. */
   *outNBElement= outIdx;
   *outBegIdx= startIdx;
   return TA_SUCCESS;
}

TA_LIB_API TA_RetCode TA_CDLDARKCLOUDCOVER_Unguarded( int    startIdx,
                                                      int    endIdx,
                                                      const double inOpen[],
                                                      const double inHigh[],
                                                      const double inLow[],
                                                      const double inClose[],
                                                      double optInPenetration,
                                                      int          *outBegIdx,
                                                      int          *outNBElement,
                                                      int        outInteger[] )
{
   double BodyLongPeriodTotal;
   int i;
   int outIdx;
   int BodyLongTrailingIdx;
   int lookbackTotal;
   int BodyLong_rangeType = TA_Globals->candleSettings[TA_BodyLong].rangeType;
   int BodyLong_avgPeriod = TA_Globals->candleSettings[TA_BodyLong].avgPeriod;
   double BodyLong_factor = TA_Globals->candleSettings[TA_BodyLong].factor;

   lookbackTotal = TA_CDLDARKCLOUDCOVER_Lookback(optInPenetration);
   if( startIdx < lookbackTotal )
   {
      startIdx = lookbackTotal;
   }
   if( startIdx > endIdx )
   {
      *outBegIdx= 0;
      *outNBElement= 0;
      return TA_SUCCESS;
   }
   BodyLongPeriodTotal = 0;
   BodyLongTrailingIdx = startIdx - BodyLong_avgPeriod;
   i = BodyLongTrailingIdx;
   while( i < startIdx )
   {
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1);
      i += 1;
   }
   i = startIdx;
   outIdx = 0;
   do
   {
      if( ((inClose[i - 1] >= inOpen[i - 1]) ? 1 : 0 - 1) == 1 && fabs(inClose[i - 1] - inOpen[i - 1]) > TA_CANDLEAVERAGE(BodyLong,BodyLongPeriodTotal,i - 1) && ((inClose[i] >= inOpen[i]) ? 1 : 0 - 1) == 0 - 1 && inOpen[i] > inHigh[i - 1] && inClose[i] > inOpen[i - 1] && inClose[i] < inClose[i - 1] - fabs(inClose[i - 1] - inOpen[i - 1]) * optInPenetration )
      {
         outInteger[outIdx++] = 0 - 100;
      } else 
      {
         outInteger[outIdx++] = 0;
      }
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1) - TA_CANDLERANGE(BodyLong,BodyLongTrailingIdx - 1);
      i += 1;
      BodyLongTrailingIdx += 1;
   } while( i <= endIdx );
   *outNBElement= outIdx;
   *outBegIdx= startIdx;
   return TA_SUCCESS;
}

TA_RetCode TA_S_CDLDARKCLOUDCOVER( int    startIdx,
                                   int    endIdx,
                                   const float inOpen[],
                                   const float inHigh[],
                                   const float inLow[],
                                   const float inClose[],
                                   double optInPenetration,
                                   int          *outBegIdx,
                                   int          *outNBElement,
                                   int        outInteger[] )
{
   double BodyLongPeriodTotal;
   int i;
   int outIdx;
   int BodyLongTrailingIdx;
   int lookbackTotal;
   int BodyLong_rangeType = TA_Globals->candleSettings[TA_BodyLong].rangeType;
   int BodyLong_avgPeriod = TA_Globals->candleSettings[TA_BodyLong].avgPeriod;
   double BodyLong_factor = TA_Globals->candleSettings[TA_BodyLong].factor;

   if( startIdx < 0 )
      return TA_OUT_OF_RANGE_START_INDEX;
   if( (endIdx < 0) || (endIdx < startIdx) )
      return TA_OUT_OF_RANGE_END_INDEX;

   if( !inOpen )
      return TA_BAD_PARAM;
   if( !inHigh )
      return TA_BAD_PARAM;
   if( !inLow )
      return TA_BAD_PARAM;
   if( !inClose )
      return TA_BAD_PARAM;
   if( optInPenetration == -4e37 )
      optInPenetration = 0.5;
   else if( optInPenetration < 0e0 || optInPenetration > 1.7976931348623157e308 )
      return TA_BAD_PARAM;
   if( !outInteger )
      return TA_BAD_PARAM;

   lookbackTotal = TA_CDLDARKCLOUDCOVER_Lookback(optInPenetration);
   if( startIdx < lookbackTotal )
   {
      startIdx = lookbackTotal;
   }
   if( startIdx > endIdx )
   {
      *outBegIdx= 0;
      *outNBElement= 0;
      return TA_SUCCESS;
   }
   BodyLongPeriodTotal = 0;
   BodyLongTrailingIdx = startIdx - BodyLong_avgPeriod;
   i = BodyLongTrailingIdx;
   while( i < startIdx )
   {
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1);
      i += 1;
   }
   i = startIdx;
   outIdx = 0;
   do
   {
      if( ((inClose[i - 1] >= inOpen[i - 1]) ? 1 : 0 - 1) == 1 && fabs(inClose[i - 1] - inOpen[i - 1]) > TA_CANDLEAVERAGE(BodyLong,BodyLongPeriodTotal,i - 1) && ((inClose[i] >= inOpen[i]) ? 1 : 0 - 1) == 0 - 1 && inOpen[i] > inHigh[i - 1] && inClose[i] > inOpen[i - 1] && inClose[i] < inClose[i - 1] - fabs(inClose[i - 1] - inOpen[i - 1]) * optInPenetration )
      {
         outInteger[outIdx++] = 0 - 100;
      } else 
      {
         outInteger[outIdx++] = 0;
      }
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1) - TA_CANDLERANGE(BodyLong,BodyLongTrailingIdx - 1);
      i += 1;
      BodyLongTrailingIdx += 1;
   } while( i <= endIdx );
   *outNBElement= outIdx;
   *outBegIdx= startIdx;
   return TA_SUCCESS;
}

TA_RetCode TA_S_CDLDARKCLOUDCOVER_Unguarded( int    startIdx,
                                             int    endIdx,
                                             const float inOpen[],
                                             const float inHigh[],
                                             const float inLow[],
                                             const float inClose[],
                                             double optInPenetration,
                                             int          *outBegIdx,
                                             int          *outNBElement,
                                             int        outInteger[] )
{
   double BodyLongPeriodTotal;
   int i;
   int outIdx;
   int BodyLongTrailingIdx;
   int lookbackTotal;
   int BodyLong_rangeType = TA_Globals->candleSettings[TA_BodyLong].rangeType;
   int BodyLong_avgPeriod = TA_Globals->candleSettings[TA_BodyLong].avgPeriod;
   double BodyLong_factor = TA_Globals->candleSettings[TA_BodyLong].factor;

   lookbackTotal = TA_CDLDARKCLOUDCOVER_Lookback(optInPenetration);
   if( startIdx < lookbackTotal )
   {
      startIdx = lookbackTotal;
   }
   if( startIdx > endIdx )
   {
      *outBegIdx= 0;
      *outNBElement= 0;
      return TA_SUCCESS;
   }
   BodyLongPeriodTotal = 0;
   BodyLongTrailingIdx = startIdx - BodyLong_avgPeriod;
   i = BodyLongTrailingIdx;
   while( i < startIdx )
   {
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1);
      i += 1;
   }
   i = startIdx;
   outIdx = 0;
   do
   {
      if( ((inClose[i - 1] >= inOpen[i - 1]) ? 1 : 0 - 1) == 1 && fabs(inClose[i - 1] - inOpen[i - 1]) > TA_CANDLEAVERAGE(BodyLong,BodyLongPeriodTotal,i - 1) && ((inClose[i] >= inOpen[i]) ? 1 : 0 - 1) == 0 - 1 && inOpen[i] > inHigh[i - 1] && inClose[i] > inOpen[i - 1] && inClose[i] < inClose[i - 1] - fabs(inClose[i - 1] - inOpen[i - 1]) * optInPenetration )
      {
         outInteger[outIdx++] = 0 - 100;
      } else 
      {
         outInteger[outIdx++] = 0;
      }
      BodyLongPeriodTotal += TA_CANDLERANGE(BodyLong,i - 1) - TA_CANDLERANGE(BodyLong,BodyLongTrailingIdx - 1);
      i += 1;
      BodyLongTrailingIdx += 1;
   } while( i <= endIdx );
   *outNBElement= outIdx;
   *outBegIdx= startIdx;
   return TA_SUCCESS;
}

