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#pragma once
#include <vector>
#include <cstddef>
namespace anofoxtime::models::theta_utils {
/**
* Deseasonalize time series data using centered moving average
*
* @param data Input time series
* @param seasonal_period Seasonal period length
* @param deseasonalized Output deseasonalized series (resized automatically)
* @param seasonal_indices Output seasonal indices (resized automatically)
*/
void deseasonalize(const std::vector<double>& data,
int seasonal_period,
std::vector<double>& deseasonalized,
std::vector<double>& seasonal_indices);
/**
* Reseasonalize forecast using seasonal indices
*
* @param forecast Input forecast values
* @param seasonal_indices Seasonal indices
* @param seasonal_period Seasonal period length
* @param history_size Size of historical data (used to compute season offset)
* @param reseasonalized Output reseasonalized forecast (resized automatically)
*/
void reseasonalize(const std::vector<double>& forecast,
const std::vector<double>& seasonal_indices,
int seasonal_period,
size_t history_size,
std::vector<double>& reseasonalized);
} // namespace anofoxtime::models::theta_utils