//FitCurveLeastSquares.cpp
//最小二乘曲線擬合

#include <iostream>					//模板類輸入輸出流標準頭文件
#include "FittingApproximation.h"	//擬合與逼近頭文件
using namespace std;				//名字空間

void main(void)
{	
	valarray<double> x(20), y(20), da(6), dt(3);

	for(int i=0; i<20; i++)
	{
		x[i] = 0.1 * i;
        y[i] = x[i] - exp(-x[i]);
    }
	
	cout.setf(ios::fixed);	//輸出數據為定點法
	cout.precision(14);		//精度14位

	FitCurveLeastSquares(x,y,da,dt);

	for (i=0; i<6; i++)
		cout << "da[" << i << "] = " << da[i] << endl;
	
	cout << endl;

	for (i=0; i<3; i++)
		cout << "dt[" << i << "] = " << dt[i] << endl;
}