NAG Library Manual, Mark 29
Interfaces:  FL   CL   CPP   AD 

NAG AD Library Introduction
Example description
/* G01EA_P0W_F C++ Header Example Program.
 *
 * Copyright 2023 Numerical Algorithms Group.
 * Mark 29.0, 2023.
 */

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

int main()
{
  int exit_status = 0;

  cout << "G01EA_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;

  cout << "       x           p\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)
  {
    double            x, p;
    nag::ad::handle_t ad_handle;

    // Read next x
    cin >> x;

    // Call NAG AD Routine
    Integer ifail = 0;
    nag::ad::g01ea(ad_handle, "S", x, p, ifail);

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

  return exit_status;
}