complex.h

这是一个非常经典的FourierTransform 算法比较有新意

// complex.h: interface for the Complex class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_COMPLEX_H__CBE433E5_A41B_4A31_9111_10E6D237EA28__INCLUDED_)
#define AFX_COMPLEX_H__CBE433E5_A41B_4A31_9111_10E6D237EA28__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class Complex;
Complex operator -(Complex x, Complex y);
Complex operator -(Complex x, Complex y);
Complex operator +(Complex x, Complex y);
Complex operator --(Complex x);//前置
Complex operator --(Complex x, int); //后置
Complex operator *(Complex x, Complex y);

#include <iostream>
using namespace std;

ostream& operator << (ostream& output, Complex x);

class Complex  
{
public:
	Complex(double x = 0, double y = 0);
	Complex(Complex &x);
	virtual ~Complex();
	Complex operator ++(void);//前置
	Complex operator ++(int); //后置
	Complex operator /= (Complex x);
	Complex operator += (Complex x);
	Complex operator / (Complex x);
	int operator !();
	int operator ==(Complex op);

	double m_dReal, m_dImage;
};

#endif // !defined(AFX_COMPLEX_H__CBE433E5_A41B_4A31_9111_10E6D237EA28__INCLUDED_)