/* nag_condl_logistic (g11cac) 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)
{
  /* Scalars */
  double dev, tol;
  Integer iprint, exit_status, i, p, j, m, maxit, n, ns, pdz;
  NagError fail;
  Nag_OrderType order;

  /* Arrays */
  double *b = 0, *cov = 0, *sc = 0, *se = 0, *z = 0;
  Integer *ic = 0, *isi = 0, *isz = 0, *nca = 0, *nct = 0;

#ifdef NAG_COLUMN_MAJOR
#define Z(I, J) z[(J-1)*pdz + I - 1]
  order = Nag_ColMajor;
#else
#define Z(I, J) z[(I-1)*pdz + J - 1]
  order = Nag_RowMajor;
#endif

  INIT_FAIL(fail);

  exit_status = 0;

  printf("nag_condl_logistic (g11cac) Example Program Results\n");

  /* Skip heading in data file */
  scanf("%*[^\n] ");
  scanf("%" NAG_IFMT "%" NAG_IFMT "%" NAG_IFMT "%" NAG_IFMT "%*[^\n] ", &n,
        &m, &ns, &maxit);

  pdz = n;
  iprint = 0;
  tol = 1e-5;

  /* Allocate arrays z, ic, isi and isz */
  if (!(z = NAG_ALLOC(pdz * m, double)) ||
      !(ic = NAG_ALLOC(n, Integer)) ||
      !(isi = NAG_ALLOC(n, Integer)) || !(isz = NAG_ALLOC(m, Integer)))
  {
    printf("Allocation failure\n");
    exit_status = -1;
    goto END;
  }

  if (order == Nag_ColMajor)
    pdz = n;
  else
    pdz = m;

  for (i = 1; i <= n; ++i) {
    scanf("%" NAG_IFMT "%" NAG_IFMT "", &isi[i - 1], &ic[i - 1]);
    for (j = 1; j <= m; ++j)
      scanf("%lf", &Z(i, j));
    scanf("%*[^\n] ");
  }

  for (j = 1; j <= m; ++j)
    scanf("%" NAG_IFMT "", &isz[j - 1]);
  scanf("%" NAG_IFMT "%*[^\n] ", &p);

  /* Allocate other arrays */
  if (!(b = NAG_ALLOC(p, double)) ||
      !(cov = NAG_ALLOC(p * (p + 1) / 2, double)) ||
      !(sc = NAG_ALLOC(p, double)) ||
      !(se = NAG_ALLOC(p, double)) ||
      !(nca = NAG_ALLOC(ns, Integer)) || !(nct = NAG_ALLOC(ns, Integer)))
  {
    printf("Allocation failure\n");
    exit_status = -1;
    goto END;
  }

  for (j = 1; j <= m; ++j)
    scanf("%lf", &b[j - 1]);
  scanf("%*[^\n] ");

  /* nag_condl_logistic (g11cac).
   * Returns parameter estimates for the conditional analysis
   * of stratified data
   */
  nag_condl_logistic(order, n, m, ns, z, pdz, isz, p, ic, isi, &dev, b, se,
                     sc, cov, nca, nct, tol, maxit, iprint, 0, &fail);
  if (fail.code != NE_NOERROR) {
    printf("Error from nag_condl_logistic (g11cac).\n%s\n", fail.message);
    exit_status = 1;
    goto END;
  }

  printf("\n");
  printf(" Deviance = %13.4e\n", dev);
  printf("\n");

  printf(" Strata     No. Cases   No. Controls\n");
  printf("\n");
  for (i = 1; i <= ns; ++i)
    printf("   %3" NAG_IFMT "          %2" NAG_IFMT "          %2" NAG_IFMT ""
           "          \n", i, nca[i - 1], nct[i - 1]);
  printf("\n");

  printf(" Parameter      Estimate       Standard Error\n");
  printf("\n");
  for (i = 1; i <= p; ++i)
    printf("%5" NAG_IFMT "          %8.4f          %8.4f          \n", i,
           b[i - 1], se[i - 1]);

END:
  NAG_FREE(b);
  NAG_FREE(cov);
  NAG_FREE(sc);
  NAG_FREE(se);
  NAG_FREE(z);
  NAG_FREE(ic);
  NAG_FREE(isi);
  NAG_FREE(isz);
  NAG_FREE(nca);
  NAG_FREE(nct);

  return exit_status;
}