/* nag_rand_compd_poisson (g05tkc) Example Program.
*
* Copyright 2017 Numerical Algorithms Group.
*
* Mark 26.1, 2017.
*/
/* Pre-processor includes */
#include <stdio.h>
#include <math.h>
#include <nag.h>
#include <nag_stdlib.h>
#include <nagg05.h>
int main(void)
{
/* Integer scalar and array declarations */
Integer exit_status = 0;
Integer i, j, lstate;
Integer *state = 0, *x = 0;
/* NAG structures */
NagError fail;
/* Set the distribution parameters */
Integer m = 5;
double lambda[] = { 0.5e0, 5.0e0, 10.0e0, 500.0e0, 1000.0e0 };
/* Set the sample size */
Integer n = 10;
/* Choose the base generator */
Nag_BaseRNG genid = Nag_Basic;
Integer subid = 0;
/* Set the seed */
Integer seed[] = { 1762543 };
Integer lseed = 1;
/* Initialize the error structure */
INIT_FAIL(fail);
printf("nag_rand_compd_poisson (g05tkc) Example Program Results\n\n");
/* Get the length of the state array */
lstate = -1;
nag_rand_init_repeatable(genid, subid, seed, lseed, state, &lstate, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_init_repeatable (g05kfc).\n%s\n",
fail.message);
exit_status = 1;
goto END;
}
/* Allocate arrays */
if (!(state = NAG_ALLOC(lstate, Integer)) || !(x = NAG_ALLOC(m, Integer)))
{
printf("Allocation failure\n");
exit_status = -1;
goto END;
}
/* Initialize the generator to a repeatable sequence */
nag_rand_init_repeatable(genid, subid, seed, lseed, state, &lstate, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_init_repeatable (g05kfc).\n%s\n",
fail.message);
exit_status = 1;
goto END;
}
/* Generate and display n sets of the m variates */
for (i = 0; i < n; i++) {
/* Generate the variates */
nag_rand_compd_poisson(m, lambda, state, x, &fail);
if (fail.code != NE_NOERROR) {
printf("Error from nag_rand_compd_poisson (g05tkc).\n%s\n",
fail.message);
exit_status = 1;
goto END;
}
/* Display the variates */
printf("%12" NAG_IFMT "", i + 1);
for (j = 0; j < m; j++)
printf("%12" NAG_IFMT "", x[j]);
printf("\n");
}
END:
NAG_FREE(state);
NAG_FREE(x);
return exit_status;
}