/* nag_5pt_summary_stats (g01alc) Example Program.
 *
 * Copyright 1996 Numerical Algorithms Group.
 *
 * Mark 4, 1996.
 * Mark 8 revised, 2004.
 *
 */

#include <nag.h>
#include <stdio.h>
#include <nag_stdlib.h>
#include <nagg01.h>

int main(void)
{

  Integer exit_status=0, i, n;
  NagError fail;
  double *res=0, *x=0;

  INIT_FAIL(fail);
  Vprintf("nag_5pt_summary_stats (g01alc) Example Program Results\n");
  /* Skip heading in data file */
  Vscanf("%*[^\n] ");
  Vscanf("%ld ", &n);
  if (n>=5)
    {
      if ( !( x = NAG_ALLOC(n, double)) ||
           !( res = NAG_ALLOC(5, double)) )
        {
          Vprintf("Allocation failure\n");
          exit_status = -1;
          goto END;
        }
    }
  else
    {
      Vprintf("Invalid n.\n");
      exit_status = 1;
      return exit_status;
    }
  for (i = 1; i <= n; ++i)
    Vscanf("%lf ", &x[i - 1]);
  /* nag_5pt_summary_stats (g01alc).
   * Five-point summary (median, hinges and extremes)
   */
  nag_5pt_summary_stats(n, x, res, &fail);
  if (fail.code != NE_NOERROR)
    {
      Vprintf("Error from nag_5pt_summary_stats (g01alc).\n%s\n", fail.message);
      exit_status = 1;
      goto END;
    }

  Vprintf("\n");
  Vprintf(" Maximum     %16.4f\n", res[4]);
  Vprintf(" Upper Hinge %16.4f\n", res[3]);
  Vprintf(" Median      %16.4f\n", res[2]);
  Vprintf(" Lower Hinge %16.4f\n", res[1]);
  Vprintf(" Minimum     %16.4f\n", res[0]);
 END:
  if (x) NAG_FREE(x);
  if (res) NAG_FREE(res);

  return exit_status;
}