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  • 大小: 4.18MB
    文件類型: .rar
    金幣: 2
    下載: 0 次
    發布日期: 2023-10-13
  • 語言: C/C++
  • 標簽: c++??

資源簡介

該程序由c++編寫，主要用于實現基于函數y=e^(-2x)在區間[0，6]的插值函數，開發工具為VS2015,請用此IDE或者更高版本的IDE打開工程文件~~~~~

資源截圖

代碼片段和文件信息 

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?“Lagrange.h“
#include?“Liner.h“
#include?“YangTiao.h“
#include?“WriteFile.h“
using?namespace?std;

#define?E?2.71828182845904523536


double?*?calculateVlaue（double?*?x?int?n）;

int?main（）?{
	FILE?*fp;//寫入文件
	fp?=?fopen（“D:\\result.txt“?“w“）;
	fclose（fp）;
	ofstream?outfile（“D:\\result.txt“?ios::in?|?ios::out?|?ios::binary）;
	if?（!outfile.is_open（））
	{
		cout?<		exit（1）;
	}
	int?num?=?0;		//輸入的插值點的數
	double?x[10000];	//用于存儲要求計算的x值
	double?standX[10000];	//用于存儲插值點x
	double?standY[10000];	//用于存儲插值點y
	double?*sY;	
	double?targetY[1000];
	double?accurateY[1000];
	cout?<	cin?>>?num;	//輸入插值點數
	outfile?<	double?step?=?6?/?double（num）;	//步長
	
	standX[0]?=?0;
	int?k?=?0;
	//cout?<	outfile?<	cout?<	for?（int?i?=?1;?i?<=?num;?i++）?{
		standX[i]?=?standX[i-1]?+?step;
		x[k]?=?6?*?（i-?0.5）?/?num;
		cout?<		outfile?<		k++;
	}
	outfile?<	cout?<
	outfile?<	cout?<	sY?=?calculateVlaue（standX?k+1）;
	for?（int?i?=?0;?i?<=?num;?i++）?{
		standY[i]?=?*（sY?+?i）;
		outfile?<	}
	outfile?<
	outfile?<	cout?<	for?（int?i?=?1;?i?<=?num;?i++）?{
		x[k]?=?6?*?（i?-?0.5）?/?num;
		cout?<		outfile?<		k++;
	}
	cout?<	outfile?<
	outfile?<	cout?<	sY?=?calculateVlaue（x?k）;//計算要求的x值對應的標準y值
	for?（int?i?=?0;?i?		accurateY[i]?=?*（sY?+?i）;
		outfile?<	}
	outfile?<
	cout?<	double?absoluteError?=?0;

	//n階拉格朗日插值
	outfile?<	sY?=?Lagrange（num?standX?standY?x）;
	for?（int?i?=?0;?i?		targetY[i]?=?*（sY?+?i）;
		if?（abs（targetY[i]?-?accurateY[i]）?>?absoluteError）?{
			absoluteError?=?abs（targetY[i]?-?accurateY[i]）;
		}
		outfile?<	}
	outfile?<	outfile?<	cout?<	absoluteError?=?0;

	//分段線性插值
	outfile?<	sY?=?Liner（num?standX?standY?x）;
	for?（int?i?=?0;?i?		targetY[i]?=?*（sY?+?i）;
		if?（abs（targetY[i]?-?accurateY[i]）?>?absoluteError）?{
			absoluteError?=?abs（targetY[i]?-?accurateY[i]）;
		}
		outfile?<	}
	outfile?<	outfile?<	cout?<
	//三次樣條	
	outfile?<	sY?=?spl2（num?+?1?standX?standY?-2?1.2284e-5?x?num）;
	for?（int?i?=?0;?i?		targetY[i]?=?*（sY?+?i）;
		i

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????..A..H.?????36864??2018-04-05?15:22??InterpolationC\.vs\Test\v14\.suo

?????文件?????108544??2018-04-05?15:15??InterpolationC\Debug\Test.exe

?????文件????1291288??2018-04-05?15:15??InterpolationC\Debug\Test.ilk

?????文件????1757184??2018-04-05?15:15??InterpolationC\Debug\Test.pdb

?????文件????????942??2018-04-05?15:15??InterpolationC\Test\Debug\Test.log

?????文件?????273199??2018-04-05?15:15??InterpolationC\Test\Debug\Test.obj

?????文件????????604??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\CL.command.1.tlog

?????文件??????15220??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\CL.read.1.tlog

?????文件????????396??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\CL.write.1.tlog

?????文件???????1066??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\link.command.1.tlog

?????文件???????2722??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\link.read.1.tlog

?????文件????????374??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\link.write.1.tlog

?????文件????????195??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog\Test.lastbuildstate

?????文件?????396288??2018-04-05?15:15??InterpolationC\Test\Debug\vc140.idb

?????文件?????479232??2018-04-05?15:15??InterpolationC\Test\Debug\vc140.pdb

?????文件????????996??2018-04-05?11:03??InterpolationC\Test\Lagrange.h

?????文件????????945??2018-04-05?10:57??InterpolationC\Test\Liner.h

?????文件???????3746??2018-04-05?11:28??InterpolationC\Test\Test.cpp

?????文件???????7431??2018-04-05?00:35??InterpolationC\Test\Test.vcxproj

?????文件???????1334??2018-04-05?00:35??InterpolationC\Test\Test.vcxproj.filters

?????文件????????496??2018-04-05?10:33??InterpolationC\Test\WriteFile.h

?????文件???????1675??2018-04-05?15:05??InterpolationC\Test\YangTiao.h

?????文件???????1294??2018-04-03?23:34??InterpolationC\Test.sln

?????文件????8630272??2018-04-05?15:22??InterpolationC\Test.VC.db

?????目錄??????????0??2018-04-03?23:34??InterpolationC\.vs\Test\v14

?????目錄??????????0??2018-04-05?15:15??InterpolationC\Test\Debug\Test.tlog

?????目錄??????????0??2018-04-03?23:34??InterpolationC\.vs\Test

?????目錄??????????0??2018-04-05?15:15??InterpolationC\Test\Debug

????...D.H.?????????0??2018-04-03?23:34??InterpolationC\.vs

?????目錄??????????0??2018-04-05?10:26??InterpolationC\Debug

............此處省略8個文件信息

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