/* nag_censored_normal (g07bbc) Example Program.
 *
 * Copyright 2001 Numerical Algorithms Group.
 *
 * Mark 7, 2001.
 */

#include <stdio.h>
#include <string.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagg07.h>

int main(void)
{

  /* Scalars */
  double corr, dev, sexmu, sexsig, tol, xmu, xsig;
  Integer exit_status, i, maxit, n, nit;

  /* Arrays */
  char *method=0;
  double *x=0, *xc=0;
  Integer *ic=0, *nobs=0;
  NagError fail;
  Nag_CEMethod method_enum;

  INIT_FAIL(fail);
  exit_status = 0;
  Vprintf("g07bbc Example Program Results\n");

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

  /* Allocate memory */
  if ( !(method = NAG_ALLOC(2, char)) )
    {
      Vprintf("Allocation failure\n");
      exit_status = -1;
      goto END;
    }

  Vscanf("%ld ' %1s '%lf%lf%lf%ld%*[^\n] ", &n, method, &xmu, &xsig, &tol, &maxit);

  /* Allocate memory */
  if ( !(x = NAG_ALLOC(n, double)) ||
       !(xc = NAG_ALLOC(n, double)) ||
       !(ic = NAG_ALLOC(n, Integer)) ||
       !(nobs = NAG_ALLOC(4, Integer)) )
    {
      Vprintf("Allocation failure\n");
      exit_status = -1;
      goto END;
    }

  for (i = 1; i <= n; ++i)
    Vscanf("%lf%lf%ld", &x[i - 1], &xc[i - 1], &ic[i - 1]);
  Vscanf("%*[^\n] ");

  if (!(strcmp(method, "N")))
    method_enum = Nag_CE_NR;
  else if (!(strcmp(method, "E")))
    method_enum = Nag_CE_EM;
  else
    {
      Vprintf("Invalid method\n");
      exit_status = -1;
      goto END;
    }
  g07bbc(method_enum, n, x, xc, ic, &xmu, &xsig, tol, maxit, &sexmu,
         &sexsig, &corr, &dev, nobs, &nit, &fail);

  if (fail.code != NE_NOERROR)
    {
      Vprintf("Error from g07bbc.\n%s\n", fail.message);
      exit_status = 1;
      goto END;
    }

  Vprintf("\n");
  Vprintf(" Mean = %8.4f\n", xmu);
  Vprintf(" Standard deviation = %8.4f\n", xsig);
  Vprintf(" Standard error of mean = %8.4f\n", sexmu);
  Vprintf(" Standard error of sigma = %8.4f\n", sexsig);
  Vprintf(" Correlation coefficient = %8.4f\n", corr);
  Vprintf(" Number of right censored observations = %2ld\n", nobs[0]);
  Vprintf(" Number of left censored observations = %2ld\n", nobs[1]);
  Vprintf(" Number of interval censored observations = %2ld\n", nobs[2]);
  Vprintf(" Number of exactly specified observations = %2ld\n", nobs[3]);
  Vprintf(" Number of iterations = %2ld\n", nit);
  Vprintf(" Log-likelihood = %8.4f\n", dev);


 END:
  if (method) NAG_FREE(method);
  if (x) NAG_FREE(x);
  if (xc) NAG_FREE(xc);
  if (ic) NAG_FREE(ic);
  if (nobs) NAG_FREE(nobs);

  return exit_status;
}