dft.h

主要是应用VC进行傅立叶变换和反变换的程序

#ifndef FOURIOR
#define FOURIOR

typedef class Complex wComplex;
class Complex
{
public:
	double Re,Im;
public:
	Complex();
	Complex(double x,double y);
	~Complex();
	double GetRe();
	double GetIm();
	void operator=(wComplex &cm);
	void operator+=(wComplex &cm);
	void operator-=(wComplex &cm);
	void operator*=(wComplex &cm);
	Complex operator*(wComplex &cm);
	void operator*=(float var);
	void operator/=(double x);
	Complex operator/(double x);
	wComplex operator+(wComplex &cm);
	wComplex operator-(wComplex &cm);
	double abs();
};

////////////////////////////////////////////////////

typedef class Fourior
{
private:
	wComplex *Wn;
	BYTE *bWn;
	BOOL flag;
	int BitsNum;
	int ByteNum;
public:
	Fourior();
	Fourior(int N);
	~Fourior();
	void DFT(wComplex *Input);
	BOOL FFT(wComplex *Input);
	void SetInverse();
}wFOURIOR;

#endif