/* G01GC_T1W_F C++ Header Example Program.
 *
 * Copyright 2020 Numerical Algorithms Group.
 * Mark 27.1, 2020.
 */

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

int main(void)
{
  int exit_status = 0;

  cout << "G01GC_T1W_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       df      rlamda     p";
  cout << "          p'         df'     rlamda'\n";
  cout.setf(ios::scientific,ios::floatfield);
  cout.setf(ios::right);
  cout.precision(2);

  Integer           maxit = 100;
  nagad_t1w_w_rtype p, x, df, rlamda, tol;
  tol = 0.0;
      
  // Create AD configuration data object
  Integer ifail = 0;
  void    *ad_handle = 0;
  x10aa_t1w_f_(ad_handle,ifail);

  // Loop over x values
  for (Integer i = 0; i < n; ++i) {
    // Read next x, df, rlamda
    double xr, dfr, rr;
    cin >> xr >> dfr >> rr;
    
    x      = xr;
    df     = dfr;
    rlamda = rr;
    double inc = 1.0;
    nagad_t1w_inc_derivative(&x,inc);
    // Call NAG AD Routine
    p = 0.0;
    ifail = 0;
    g01gc_t1w_f_(ad_handle,x,df,rlamda,tol,maxit,p,ifail);
    
    // Get derivatives
    double dpdx;
    dpdx = nagad_t1w_get_derivative(p);
    
    x      = xr;
    df     = dfr;
    rlamda = rr;
    nagad_t1w_inc_derivative(&df,inc);
    // Call NAG AD Routine
    p = 0.0;
    ifail = 0;
    g01gc_t1w_f_(ad_handle,x,df,rlamda,tol,maxit,p,ifail);
    double dpdd;
    dpdd = nagad_t1w_get_derivative(p);
    
    x      = xr;
    df     = dfr;
    rlamda = rr;
    nagad_t1w_inc_derivative(&rlamda,inc);
    // Call NAG AD Routine
    p = 0.0;
    ifail = 0;
    g01gc_t1w_f_(ad_handle,x,df,rlamda,tol,maxit,p,ifail);
    double dpdr;
    dpdr = nagad_t1w_get_derivative(p);

    // Output results
    cout.width(9);  cout << nagad_t1w_get_value(x);
    cout.width(9);  cout << nagad_t1w_get_value(df);
    cout.width(9);  cout << nagad_t1w_get_value(rlamda);
    cout.width(9);  cout << nagad_t1w_get_value(p);
    cout.width(11);  cout << dpdx;
    cout.width(11);  cout << dpdd;
    cout.width(11);  cout << dpdr << endl;

    // Remove computational data object
  }

  x10ab_t1w_f_(ad_handle,ifail);

  return exit_status;
}