在类中使用模板函数 [英] Using a template function inside a class

问题描述

我有模板功能

template<class /> double RombergIntegral(const double& a, const double& b,const T& f, const int& order)

我想在[a，b]中计算一个函数的积分，我想在一个非模板类中使用它来集成类成员函数，例如

for calculating the integral of a function in [a,b] which I want to use inside a non-templated class for integrating a class member function like

double MyModel::function(double t)

尤其是我想在另一个成员函数中执行此操作，即我想编写类似的内容

In particular I would like to do this inside another member function, i.e I want to write something like

double MyModel::integral_function(double t) {

    return RombergIntegral<double(double)>(0.0,t,&MyModel::function,5)

}

这不起作用.最好的方法是什么?

which doesn''t work. What is the best way to do this?

推荐答案

您可以尝试

template <typename T>
double RombergIntegral(const double& a, const double& b, static T (*f)(T), const int& order)
{
  //stuff here...
}

class MyModel
{ 
public:
  static double function(double t)
  {
    // stuff here...
  }
  double integral_function(double t) 
  {
    return RombergIntegral < double > (0.0, t, &MyModel::function, 5);
  }
};

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