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/* ------------------------------------------------------------- */
/* File: example_gsl.c */
/* ------------------------------------------------------------- */
#ifdef UNURAN_SUPPORTS_GSL
/* ------------------------------------------------------------- */
/* This example makes use of the GSL library for generating */
/* uniform random numbers. */
/* (see http://www.gnu.org/software/gsl/) */
/* To compile this example you must have set */
/* ./configure --with-urng-gsl */
/* (Of course the executable has to be linked against the */
/* GSL library.) */
/* ------------------------------------------------------------- */
/* Include UNURAN header files. */
#include <unuran.h>
#include <unuran_urng_gsl.h>
/* ------------------------------------------------------------- */
int main(void)
{
int i; /* loop variable */
double x; /* will hold the random number */
/* Declare the three UNURAN objects. */
UNUR_DISTR *distr; /* distribution object */
UNUR_PAR *par; /* parameter object */
UNUR_GEN *gen; /* generator object */
/* Declare objects for uniform random number generators. */
UNUR_URNG *urng; /* uniform generator objects */
/* GNU Scientific Library only: */
/* Make a object for uniform random number generator. */
urng = unur_urng_gsl_new(gsl_rng_mt19937);
if (urng == NULL) exit (EXIT_FAILURE);
/* Create a generator object using this URNG */
distr = unur_distr_normal( NULL, 0 );
par = unur_tdr_new(distr);
unur_set_urng( par, urng );
gen = unur_init(par);
if (gen == NULL) exit (EXIT_FAILURE);
unur_distr_free(distr);
/* Now you can use the generator object `gen' to sample from */
/* the distribution. Eg.: */
for (i=0; i<10; i++) {
x = unur_sample_cont(gen);
printf("%f\n",x);
}
/* Destroy objects */
unur_free(gen);
unur_urng_free(urng);
exit (EXIT_SUCCESS);
} /* end of main() */
/* ------------------------------------------------------------- */
#else
#include <stdio.h>
#include <stdlib.h>
int main(void) {
printf("You must enable the GSL to run this example!\n\n");
exit (77); /* exit code for automake check routines */
}
#endif
/* ------------------------------------------------------------- */
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