c++ - 使用 autodiff 包的问题：“致命错误：autodiff/forward/dual.hpp：没有这样的文件或目录”

Question

我正在尝试使用该autodiff包。

我试图实现他们的第一个例子。我的代码如下：

#include <iostream>

// autodiff include
#include <autodiff/forward/dual.hpp>
using namespace autodiff;

// The single-variable function for which derivatives are needed
dual f(dual x)
{
  return 1 + x + x*x + 1/x + log(x);
}

int main()
{
  dual x = 2.0;                                 // the input variable x
  dual u = f(x);                                // the output variable u
  
  double dudx = derivative(f, wrt(x), at(x));   // evaluate the derivative du/dx
  
  std::cout << "u = " << u << std::endl;        // print the evaluated output u
  std::cout << "du/dx = " << dudx << std::endl; // print the evaluated derivative du/dx
}

我从我的 Ubuntu 终端使用 编译它g++ autodiff2.cpp -std=c++1z，但出现以下错误：

autodiff2.cpp:4:10: fatal error: autodiff/forward/dual.hpp: No such file or directory
    4 | #include <autodiff/forward/dual.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

我该如何解决这个问题？