NAG Library Manual, Mark 27.2
Interfaces:  FL   CL   CPP   AD 

NAG AD Library Introduction
Example description
/* G01FB_P0W_F C++ Header Example Program.
 *
 * Copyright 2021 Numerical Algorithms Group.
 * Mark 27.2, 2021.
 */

#include <iostream>
#include <nag.h>
#include <nagad.h>
#include <stdio.h>
#include <string>
using namespace std;

int main(void)
{
  int exit_status = 0;

  cout << "G01FB_P0W_F C++ Header Example Program Results\n\n";
  // Skip heading in data file
  string mystr;
  getline(cin, mystr);

  // Read number of x values
  Integer n;
  cin >> n;

  Integer ifail     = 0;
  void *  ad_handle = 0;

  cout << "  tail      p           df          x\n";
  cout.setf(ios::scientific, ios::floatfield);
  cout.setf(ios::right);
  cout.precision(4);

  // Loop over x values
  for (Integer i = 0; i < n; ++i)
    {
      // Read next x and df
      double p, df, x;
      cin >> p >> df >> mystr;

      const char *tail = mystr.c_str();

      // Call NAG AD Routine
      ifail = 0;
      nag::ad::g01fb(ad_handle, tail, p, df, x, ifail);

      cout.width(5);
      cout << tail;
      cout.width(12);
      cout << p;
      cout.width(12);
      cout << df;
      cout.width(12);
      cout << x << endl;
    }

  return exit_status;
}