/* nag_tabulate_stats (g11bac) Example Program.
 *
 * Copyright 2017 Numerical Algorithms Group.
 *
 * Mark 26.2, 2017.
 */

#include <stdio.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagg11.h>

int main(void)
{
  Integer exit_status = 0, i, items, j, k, ltmax, maxt, n, ncells;
  Integer ncol, ndim, nfac, nrow, tdf;
  Integer *count = 0, *factor = 0, *idim = 0, *isf = 0, *lfac = 0;
  double *comm_ar = 0, *table = 0, *wt = 0, *y = 0;
  char nag_enum_arg[40];
  Nag_TableStats stat;
  Nag_Weightstype weight;
  NagError fail;

#define FACTOR(I, J) factor[((I) -1)*nfac + (J) -1]

  INIT_FAIL(fail);

  printf("nag_tabulate_stats (g11bac) Example Program Results\n");

  /* Skip heading in data file */
  scanf("%*[^\n]");
  scanf("%39s", nag_enum_arg);
  /* nag_enum_name_to_value (x04nac).
   * Converts NAG enum member name to value
   */
  stat = (Nag_TableStats) nag_enum_name_to_value(nag_enum_arg);
  scanf("%39s", nag_enum_arg);
  weight = (Nag_Weightstype) nag_enum_name_to_value(nag_enum_arg);
  scanf("%" NAG_IFMT " %" NAG_IFMT " ", &n, &nfac);

  ltmax = 18;
  maxt = ltmax;
  if (!(isf = NAG_ALLOC(nfac, Integer))
      || !(lfac = NAG_ALLOC(nfac, Integer))
      || !(idim = NAG_ALLOC(nfac, Integer))
      || !(factor = NAG_ALLOC(n * nfac, Integer))
      || !(count = NAG_ALLOC(maxt, Integer))
      || !(y = NAG_ALLOC(n, double))
      || !(wt = NAG_ALLOC(n, double))
      || !(table = NAG_ALLOC(maxt, double))
      || !(comm_ar = NAG_ALLOC(2 * maxt, double)))
  {
    printf("Allocation failure\n");
    exit_status = -1;
    goto END;
  }

  if (weight == Nag_Weights || weight == Nag_Weightsvar) {
    for (i = 1; i <= n; ++i) {
      for (j = 1; j <= nfac; ++j)
        scanf("%" NAG_IFMT "", &FACTOR(i, j));
      scanf("%lf %lf", &y[i - 1], &wt[i - 1]);
    }
  }
  else {
    for (i = 1; i <= n; ++i) {
      for (j = 1; j <= nfac; ++j)
        scanf("%" NAG_IFMT "", &FACTOR(i, j));
      scanf("%lf", &y[i - 1]);
    }
  }
  for (j = 1; j <= nfac; ++j)
    scanf("%" NAG_IFMT "", &lfac[j - 1]);
  for (j = 1; j <= nfac; ++j)
    scanf("%" NAG_IFMT "", &isf[j - 1]);
  tdf = 3;
  maxt = ltmax;

  /* nag_tabulate_stats (g11bac).
   * Computes multiway table from set of classification
   * factors using selected statistic
   */
  nag_tabulate_stats(stat, Nag_TableUpdateI, weight, n, nfac, isf,
                     lfac, factor, tdf, y, wt, table, maxt, &ncells, &ndim,
                     idim, count, comm_ar, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_tabulate_stats (g11bac).\n%s\n", fail.message);
    exit_status = 1;
    goto END;
  }
  printf("\n");
  printf("%s\n", "Table");
  printf("\n");
  ncol = idim[ndim - 1];
  nrow = ncells / ncol;
  k = 1;
  for (i = 1; i <= nrow; ++i) {
    for (j = k, items = 1; j <= k + ncol - 1; ++j, items++)
      printf("%8.2f(%2" NAG_IFMT ")%s", table[j - 1],
             count[j - 1], items % 6 ? "" : "\n");
    k += ncol;
  }

END:
  NAG_FREE(isf);
  NAG_FREE(lfac);
  NAG_FREE(idim);
  NAG_FREE(factor);
  NAG_FREE(count);
  NAG_FREE(y);
  NAG_FREE(wt);
  NAG_FREE(table);
  NAG_FREE(comm_ar);

  return exit_status;
}