/* S15AD_T1W_F C++ Header Example Program.
 *
 * Copyright 2021 Numerical Algorithms Group.
 * Mark 27.2, 2021.
 */

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

int main(void)
{
  int exit_status = 0;

  // Input and output variables
  nagad_t1w_w_rtype e, x;

  cout << "S15AD_T1W_F C++ Header Example Program Results\n\n";

  x = -1.;

  cout << "       x         erfc(x)    derfc/dx\n";
  cout.setf(ios::scientific, ios::floatfield);
  cout.setf(ios::right);
  cout.precision(4);

  // Create AD configuration data object
  Integer ifail     = 0;
  void *  ad_handle = 0;
  nag::ad::x10aa(ad_handle, ifail);

  dco::derivative(x) = 1.;

  // Call NAG AD Routine
  ifail = 0;
  nag::ad::s15ad(ad_handle, x, e, ifail);

  // Get derivative, derfcdx and output values
  double dedx;
  dedx = dco::derivative(e);

  cout.width(12);
  cout << dco::value(x);
  cout.width(12);
  cout << dco::value(e);
  cout.width(12);
  cout << dedx << endl;

  // Remove computational data object
  nag::ad::x10ab(ad_handle, ifail);

  return exit_status;
}