/* 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
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* 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.
*/

/* 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
 *  -------------------------------------------------------------------
 *  MF       Mario Fortier
 *  JV       Jesus Viver <324122@cienz.unizar.es>
 *
 * Change history:
 *
 *  MMDDYY BY   Description
 *  -------------------------------------------------------------------
 *  112400 MF   Template creation.
 *  100502 JV   Speed optimization of the algorithm
 *  052603 MF   Adapt code to compile with .NET Managed C++
 *  090404 MF   Fix #978056. Trap sqrt with negative zero values.
 */

TA_LIB_API int TA_STDDEV_Lookback( int optInTimePeriod, double optInNbDev )
{
   if( (int)optInTimePeriod == (int)0x80000000 )
      optInTimePeriod = 5;
   else if( (int)optInTimePeriod < 2 || (int)optInTimePeriod > 100000 )
      return -1;
   if( optInNbDev == -4e37 )
      optInNbDev = 1;
   /* Lookback is driven by the variance. */
   return TA_VAR_Lookback(optInTimePeriod,optInNbDev);
}

TA_LIB_API TA_RetCode TA_STDDEV( int    startIdx,
                                 int    endIdx,
                                 const double inReal[],
                                 int optInTimePeriod,
                                 double optInNbDev,
                                 int          *outBegIdx,
                                 int          *outNBElement,
                                 double        outReal[] )
{
   int i;
   TA_RetCode retCode;
   double tempReal;

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

   if( !inReal )
      return TA_BAD_PARAM;
   if( (int)optInTimePeriod == (int)0x80000000 )
      optInTimePeriod = 5;
   else if( (int)optInTimePeriod < 2 || (int)optInTimePeriod > 100000 )
      return TA_BAD_PARAM;
   if( optInNbDev == -4e37 )
      optInNbDev = 1;
   if( !outReal )
      return TA_BAD_PARAM;

   /* Calculate the variance. */
   retCode = TA_VAR_Unguarded(startIdx,endIdx,inReal,optInTimePeriod,1.0,outBegIdx,outNBElement,outReal);
   if( retCode != TA_SUCCESS )
   {
      return retCode;
   }
   /* Calculate the square root of each variance, this
    * is the standard deviation.
    *
    * Multiply also by the ratio specified.
    */
   if( optInNbDev != 1.0 )
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal) * optInNbDev;
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   } else 
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal);
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   }
   return TA_SUCCESS;
}

TA_LIB_API TA_RetCode TA_STDDEV_Unguarded( int    startIdx,
                                           int    endIdx,
                                           const double inReal[],
                                           int optInTimePeriod,
                                           double optInNbDev,
                                           int          *outBegIdx,
                                           int          *outNBElement,
                                           double        outReal[] )
{
   int i;
   TA_RetCode retCode;
   double tempReal;

   retCode = TA_VAR_Unguarded(startIdx,endIdx,inReal,optInTimePeriod,1.0,outBegIdx,outNBElement,outReal);
   if( retCode != TA_SUCCESS )
   {
      return retCode;
   }
   if( optInNbDev != 1.0 )
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal) * optInNbDev;
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   } else 
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal);
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   }
   return TA_SUCCESS;
}

TA_RetCode TA_S_STDDEV( int    startIdx,
                        int    endIdx,
                        const float inReal[],
                        int optInTimePeriod,
                        double optInNbDev,
                        int          *outBegIdx,
                        int          *outNBElement,
                        double        outReal[] )
{
   int i;
   TA_RetCode retCode;
   double tempReal;

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

   if( !inReal )
      return TA_BAD_PARAM;
   if( (int)optInTimePeriod == (int)0x80000000 )
      optInTimePeriod = 5;
   else if( (int)optInTimePeriod < 2 || (int)optInTimePeriod > 100000 )
      return TA_BAD_PARAM;
   if( optInNbDev == -4e37 )
      optInNbDev = 1;
   if( !outReal )
      return TA_BAD_PARAM;

   retCode = TA_S_VAR_Unguarded(startIdx,endIdx,inReal,optInTimePeriod,1.0,outBegIdx,outNBElement,outReal);
   if( retCode != TA_SUCCESS )
   {
      return retCode;
   }
   if( optInNbDev != 1.0 )
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal) * optInNbDev;
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   } else 
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal);
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   }
   return TA_SUCCESS;
}

TA_RetCode TA_S_STDDEV_Unguarded( int    startIdx,
                                  int    endIdx,
                                  const float inReal[],
                                  int optInTimePeriod,
                                  double optInNbDev,
                                  int          *outBegIdx,
                                  int          *outNBElement,
                                  double        outReal[] )
{
   int i;
   TA_RetCode retCode;
   double tempReal;

   retCode = TA_S_VAR_Unguarded(startIdx,endIdx,inReal,optInTimePeriod,1.0,outBegIdx,outNBElement,outReal);
   if( retCode != TA_SUCCESS )
   {
      return retCode;
   }
   if( optInNbDev != 1.0 )
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal) * optInNbDev;
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   } else 
   {
      for( i = 0; i < (int)*outNBElement; i += 1 )
      {
         tempReal = outReal[i];
         if( !TA_IS_ZERO_OR_NEG(tempReal) )
         {
            outReal[i] = sqrt(tempReal);
         } else 
         {
            outReal[i] = (double)0.0;
         }
      }
   }
   return TA_SUCCESS;
}

