/* nag_prob_students_t (g01ebc) Example Program.
 *
 * Copyright 1996 Numerical Algorithms Group.
 *
 * Mark 4, 1996.
 * Mark 5 revised, 1998.
 * Mark 7 revised, 2001.
 *
 */

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

int main(void)
{
  double df, prob, t;
  int i;
  static Nag_TailProbability tail[4] = {Nag_LowerTail, Nag_UpperTail,
                                        Nag_TwoTailSignif, Nag_TwoTailConfid};
  static const char *tailmess[] = { "Nag_LowerTail", "Nag_UpperTail",
                                    "Nag_TwoTailSignif", "Nag_TwoTailConfid"};

  Vprintf("nag_prob_students_t (g01ebc) Example Program Results\n\n");
  /* Skip heading in data file */
  Vscanf("%*[^\n]");
  Vprintf("    t      df     prob      tail\n\n");
  while (scanf("%lf %lf %d\n", &t, &df, &i) != EOF)
    {
      /* nag_prob_students_t (g01ebc).
       * Probabilities for Student's t-distribution
       */
      prob = nag_prob_students_t(tail[i], t, df, NAGERR_DEFAULT);
      Vprintf(" %6.3f%8.3f%8.4f  %s\n", t, df, prob, tailmess[i]);
    }
  return EXIT_SUCCESS;
}