#ifndef _WINDOWS_FUNC_HH_75238409574302950
#define _WINDOWS_FUNC_HH_75238409574302950
#include "const.h"

#define BESSELI_K_LENGTH 10 // ±´Èû¶ûº¯ÊýÕ¹¿ªÏîÊý
class Windows
{
private:
	/**
	* @brief Áã½×µÚÒ»ÀàÐÞÕý±´Èû¶ûº¯Êý I0(x) ʵÏÖ
	* @param x ×Ô±äÁ¿
	* @param n_terms ¼¶ÊýÕ¹¿ªÏîÊý
	* @return I0(x) µÄ½üËÆÖµ
	*/
	double besseli(double x, int n_terms = BESSELI_K_LENGTH);
public:
	void RectangleWin(double* w, int n);
	void TriangularWin(double* w, int n);
	void HannWin(double* w, int n);
	void HammingWin(double* w, int n);
	void KaiserWin(double* w, int n, double beta = 5.65);
	void BlackManWin(double* w, int n);

};

#endif