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Integral.h
Package: 科学与工程数值计算算法配套源码vc++.zip [view]
Upload User: weigute
Upload Date: 2007-03-02
Package Size: 1287k
Code Size: 2k
Category:
Algorithm
Development Platform:
Visual C++
- //////////////////////////////////////////////////////////////////////
- // Integral.h
- //
- // 操作数值积分的类 CIntegral 的声明接口
- //
- // 周长发编制, 2002/8
- //////////////////////////////////////////////////////////////////////
- #if !defined(AFX_INTEGRAL_H__21478079_DA0B_4D58_8565_E197C022F2FA__INCLUDED_)
- #define AFX_INTEGRAL_H__21478079_DA0B_4D58_8565_E197C022F2FA__INCLUDED_
- #if _MSC_VER > 1000
- #pragma once
- #endif // _MSC_VER > 1000
- #include <math.h>
- class AFX_EXT_CLASS CIntegral
- {
- public:
- //
- // 构造与析构
- //
- CIntegral();
- virtual ~CIntegral();
- //
- // 虚函数:计算积分函数值,必须在派生类中覆盖该函数
- //
- virtual double Func(double x)
- {
- return 0.0;
- }
- //
- // 数值积分求解算法
- //
- // 变步长梯形求积法
- double GetValueTrapezia(double a, double b, double eps = 0.000001);
- // 变步长辛卜生求积法
- double GetValueSimpson(double a, double b, double eps = 0.000001);
- // 自适应梯形求积法
- double GetValueATrapezia(double a, double b, double d, double eps = 0.000001);
- // 龙贝格求积法
- double GetValueRomberg(double a, double b, double eps = 0.000001);
- // 计算一维积分的连分式法
- double GetValuePq(double a, double b, double eps = 0.000001);
- // 高振荡函数求积法
- double GetValuePart(double a, double b, int m, int n, double fa[], double fb[], double s[]);
- // 勒让德-高斯求积法
- double GetValueLegdGauss(double a, double b, double eps = 0.000001);
- // 拉盖尔-高斯求积法
- double GetValueLgreGauss();
- // 埃尔米特-高斯求积法
- double GetValueHermiteGauss();
- //
- // 内部函数
- //
- private:
- void ppp(double x0, double x1, double h, double f0, double f1, double t0, double eps, double d, double t[]);
- };
- #endif // !defined(AFX_INTEGRAL_H__21478079_DA0B_4D58_8565_E197C022F2FA__INCLUDED_)