/* nag_rngs_poisson(g05mkc) Example Program.
 *
 * Copyright 2001 Numerical Algorithms Group.
 *
 * Mark 7, 2001.
 */

#include <stdio.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagg05.h>

int main(void)
{
  /* Scalars */
  double   lambda;
  Integer  i, igen, n, nr;
  Integer  exit_status=0;
  NagError fail;

  /* Arrays */
  double   *r=0;
  Integer  *x=0;
  Integer  iseed[4];

  INIT_FAIL(fail);
  Vprintf("g05mkc Example Program Results\n\n");
  nr = 120;
  n = 10;

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

  /* Set the distribution parameter LAMBDA */
  lambda = 20.0;
  /* Initialise the seed to a repeatable sequence */
  iseed[0] = 1762543;
  iseed[1] = 9324783;
  iseed[2] = 42344;
  iseed[3] = 742355;
  /* igen identifies the stream. */
  igen = 1;
  g05kbc(&igen, iseed);

  /* Generate reference vector R */
  g05mkc(0, lambda, n, x, igen, iseed, r, &fail);
  if (fail.code != NE_NOERROR)
    {
      Vprintf("Error from g05mkc.\n%s\n", fail.message);
      exit_status = 1;
      goto END;
    }
  /* Generate integers and store in X */
  g05mkc(1, lambda, n, x, igen, iseed, r, &fail);
  if (fail.code != NE_NOERROR)
    {
      Vprintf("Error from g05mkc.\n%s\n", fail.message);
      exit_status = 1;
      goto END;
    }
  for (i = 0; i < n; ++i)
    {
      Vprintf("%12ld\n", x[i]);
    }
 END:
  if (r) NAG_FREE(r);
  if (x) NAG_FREE(x);
  return exit_status;
}