/* nag_tsa_multi_diff (g13dlc) Example Program.
 *
 * Copyright 2002 Numerical Algorithms Group.
 *
 * Mark 7, 2002.
 */

#include <stdio.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagg13.h>

int main(void)
{
  /* Scalars */
  Integer exit_status, i, j, k, maxd, mind, n, nd, ik, nw,
    pdw, pddelta, pdz;
  NagError fail;

  /* Arrays */
  double *delta = 0, *w = 0, *z = 0;
  Integer *id = 0, *tr=0;

#define W(I,J) w[(J-1)*pdw + I - 1]
#define DELTA(I,J) delta[(J-1)*pddelta + I - 1]
#define Z(I,J) z[(J-1)*pdz + I - 1]

  INIT_FAIL(fail);
  exit_status = 0;

  Vprintf("g13dlc Example Program Results\n");

  /* Skip heading in data file */
  Vscanf("%*[^\n] ");

  Vscanf("%ld%ld%*[^\n] ", &k, &n);

  if (k > 0 && n > 0)
    {
      ik = k;
      /* Allocate array id */
      if ( !(id = NAG_ALLOC(k, Integer)) )
        {
          Vprintf("Allocation failure\n");
          exit_status = -1;
          goto END;
        }

      for (i = 1; i <= k; ++i)
        Vscanf("%ld", &id[i-1]);
      Vscanf("%*[^\n] ");

      mind = 0;
      maxd = 0;
      for (i = 1; i <= k; ++i)
        {
          mind = MIN(mind, id[i-1]);
          maxd = MAX(maxd, id[i-1]);
        }

      if (mind >= 0)
        {
          /* Allocate arrays */
          nw = n - maxd;
          if ( !(tr = NAG_ALLOC(k, Integer)) ||
               !(delta = NAG_ALLOC(ik * maxd, double)) ||
               !(w = NAG_ALLOC(ik * nw, double)) ||
               !(z = NAG_ALLOC(ik * n, double)) )
            {
              Vprintf("Allocation failure\n");
              exit_status = -1;
              goto END;
            }

          pdw = ik;
          pddelta = ik;
          pdz = ik;
          
          for (i = 1; i <= k; ++i)
            {
              for (j = 1; j <= n; ++j)
                Vscanf("%lf", &Z(i,j));
              Vscanf("%*[^\n] ");
            }

          for (i = 1; i <= k; ++i)
            Vscanf("%ld", &tr[i-1]);
          Vscanf("%*[^\n] ");

          if (maxd > 0)
            {
              for (i = 1; i <= k; ++i)
                {
                  for (j = 1; j <= id[i-1]; ++j)
                    Vscanf("%lf", &DELTA(i,j));
                  Vscanf("%*[^\n] ");
                }
            }

          g13dlc(k, n, z, tr, id, delta, w, &nd, &fail);
          if (fail.code != NE_NOERROR)
            {
              Vprintf("Error from g13dlc.\n%s\n",   fail.message);
              exit_status = 1;
              goto END;
            }
          Vprintf("\n");
          Vprintf(" Transformed/Differenced series\n");
          Vprintf(" ------------------------------\n");

          for (i = 1; i <= k; ++i)
            {
              Vprintf("\n");
              Vprintf(" Series %2ld\n", i);
              Vprintf(" -----------\n");
              Vprintf("\n");
              Vprintf(" Number of differenced values = %6ld\n", nd);
              Vprintf("\n");
              for (j = 1; j <= nd; ++j)
                {
                  Vprintf("%10.3f", W(i,j));
                  if (j % 8 == 0 || j == nd)
                    Vprintf("\n");
                }
            }
        }
    }

 END:
  if (tr) NAG_FREE(tr);
  if (delta) NAG_FREE(delta);
  if (w) NAG_FREE(w);
  if (z) NAG_FREE(z);
  if (id) NAG_FREE(id);

  return exit_status;
}