/* nag_glm_tran_model(g02gkc) Example Program.
 *
 * Copyright 1996 Numerical Algorithms Group.
 *
 * Mark 4, 1996.
 *
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nagg02.h>

#define NMAX 15
#define MMAX  9
#define TDC MMAX
#define TDX MMAX
#define TDV MMAX+6

int main(void)
{
  Integer i, nclin, ip, j, m, n;
  double  ex_power;
  Integer sx[MMAX];
  double  b[MMAX], c[NMAX][MMAX], cov[MMAX*(MMAX+1)/2], se[MMAX],
  v[NMAX][TDV], x[NMAX][MMAX], y[NMAX];
  double  *wtptr;
  Integer max_iter;
  Integer print_iter;
  double eps;
  double tol;
  double df;
  double dev;
  Integer rank;
  static  NagError fail;

  Vprintf("g02gkc Example Program Results\n\n");
  /* Skip heading in data file */
  Vscanf("%*[^\n]");
  Vscanf("%ld %ld %ld", &n, &m, &print_iter);

  if (n<=NMAX && m<MMAX)
    {
      wtptr = (double *)0;
      for (i=0; i<n; i++)
        {
          for (j=0; j<m; j++)
            Vscanf("%lf", &x[i][j]);
          Vscanf("%lf", &y[i]);
        }
      for (j=0; j<m; j++)
        Vscanf("%ld", &sx[j]);
      Vscanf("%ld", &ip);

      /* Set control parameters */
      max_iter = 10;
      tol = 5e-5;
      eps = 1e-6;
      ex_power = 0.0;
      /* Fit Log-linear model using g02gcc */

      g02gcc(Nag_Log, Nag_MeanInclude, n, &x[0][0], (Integer)TDX,
             m, sx, ip, y, wtptr, (double *)0, ex_power, &dev, &df, b, &rank, se, cov, &v[0][0],
             (Integer)TDV, tol, max_iter, print_iter, "", eps, &fail);

      if (fail.code == NE_NOERROR || fail.code == NE_LSQ_ITER_NOT_CONV ||
          fail.code == NE_RANK_CHANGED || fail.code == NE_ZERO_DOF_ERROR)
        {
          Vprintf("\nDeviance = %12.4e\n", dev);
          Vprintf("Degrees of freedom = %3.1f\n\n", df);
          /* Input constraints */
          nclin = ip - rank;
          for (i=0; i<ip; ++i)
            for (j=0; j<nclin; ++j)
              Vscanf("%lf", &c[i][j]);

          g02gkc(ip, nclin, &v[0][0], (Integer)TDV, &c[0][0],
                 (Integer)TDC, b, 1.0e0, se, cov, &fail);

          if (fail.code == NE_NOERROR)
            {
              Vprintf("       Estimate     Standard error\n\n");
              for (i=0; i<ip; i++)
                Vprintf(" %14.4f%14.4f\n", b[i], se[i]);
              Vprintf("\n");
            }
          else
            {
              Vprintf("%s\n",fail.message);
              return EXIT_FAILURE;
            }
        }
      else
        {
          Vprintf("%s\n",fail.message);
          return EXIT_FAILURE;
        }
    }
  else
    {
      Vfprintf(stderr, "One or both of m and n are out of range:"
               " m = %-3ld while  n = %-3ld\n", m, n);
      return EXIT_FAILURE;
    }
  return EXIT_SUCCESS;
}