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/* ------------------------------------------------------------- */
/* File: example_discr_str.c */
/* ------------------------------------------------------------- */
/* String API. */
/* ------------------------------------------------------------- */
/* Include UNURAN header file. */
#include <unuran.h>
/* ------------------------------------------------------------- */
/* Example how to sample from a discrete univariate distribution.*/
/* ------------------------------------------------------------- */
int main(void)
{
int i; /* loop variable */
/* Declare UNURAN generator objects. */
UNUR_GEN *gen1, *gen2; /* generator objects */
/* First distribution: defined by PMF. */
gen1 = unur_str2gen("geometric(0.3); mode=0 & method=dari");
/* It is important to check if the creation of the generator */
/* object was successful. Otherwise `gen' is the NULL pointer */
/* and would cause a segmentation fault if used for sampling. */
if (gen1 == NULL) {
fprintf(stderr, "ERROR: cannot create generator object\n");
exit (EXIT_FAILURE);
}
/* Second distribution: defined by (finite) PV. */
gen2 = unur_str2gen(
"distr=discr; pv=(1,2,3,4,5,6,7,8,4,3) & method=dgt");
if (gen2 == NULL) {
fprintf(stderr, "ERROR: cannot create generator object\n");
exit (EXIT_FAILURE);
}
/* print some random integers */
for (i=0; i<10; i++){
printf("number %d: %d\n", i*2, unur_sample_discr(gen1) );
printf("number %d: %d\n", i*2+1, unur_sample_discr(gen2) );
}
/* Destroy all objects. */
unur_free(gen1);
unur_free(gen2);
exit (EXIT_SUCCESS);
} /* end of main() */
/* ------------------------------------------------------------- */
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