/* nag_sign_test (g08aac) Example Program.
 *
 * Copyright 2000 Numerical Algorithms Group.
 *
 * Mark 6, 2000.
 */


#include <stdio.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagg08.h>


int main (void)
{
  double p, *x=0, *y=0;
  Integer i, s, n, non_tied;
  Integer exit_status=0;
  NagError fail;


  INIT_FAIL(fail);
  Vprintf("g08aac Example Program Results\n");

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

  n=17;
  if (!(x=NAG_ALLOC(n, double))
      || !(y=NAG_ALLOC(n, double)))
    {
      Vprintf("Allocation failure\n");
      exit_status = -1;
      goto END;
    }

  for (i=1; i<=n; i++)
    Vscanf("%lf", &x[i-1]);

  for (i=1; i<=n; i++)
    Vscanf("%lf", &y[i-1]);

  Vprintf("\n%s\n\n", "Sign test");
  Vprintf("%s\n\n", "Data values");
  for (i=1; i<=n; i++)
    Vprintf("%3.0f%s", x[i-1], i%n?"":"\n");
  Vprintf("\n");

  for (i=1; i<=n; i++)
    Vprintf("%3.0f%s", y[i-1], i%n?"":"\n");
  Vprintf("\n");

  g08aac(n, x, y, &s, &p, &non_tied, &fail);
  if (fail.code != NE_NOERROR)
    {
      Vprintf("Error from g08aac.\n%s\n", fail.message);
      exit_status = 1;
      goto END;
    }

  Vprintf("%s%5ld\n", "Test statistic   ", s);
  Vprintf("%s%5ld\n", "Observations     ", non_tied);
  Vprintf("%s%5.3f\n", "Lower tail prob. ", p);
 END:
  if (x) NAG_FREE(x);
  if (y) NAG_FREE(y);
  return exit_status;
}