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test-rng.c
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test-rng.c
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#include "rng-double.h"
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "testutils.h"
int
test_rng_double_smoke(void *user_data)
{
register int m; double a[2009];
RngDouble* gen = rng_double_new(310952L);
for (m=0;m<2009;m++) rng_double_get_array(gen, a, 1009);
printf("%.20f\n", a[0]);
assert(a[0] == 0.13283300318196644696);
// XXX: possible issue in original impl:
// in the original test from D.Knuth, the internal state (ran_u) was tested
// directly and the result was then the same for both of these cases
// assert(ran_u[0] == 0.36410514377569680455);
// in the int version, a is tested like we do here and also gives same result for the two cases
// this is not the case here though?
rng_double_free(gen);
gen = rng_double_new(310952L);
for (m=0;m<1009;m++) rng_double_get_array(gen, a, 2009);
printf("%.20f\n", a[0]);
assert(a[0] == 0.64694669426788964373);
rng_double_free(gen);
return 1;
}
int
main(int argc, char **argv)
{
TestCase test_cases[] = {
{"/rng/double/smoke", test_rng_double_smoke, NULL}
};
return test_cases_run(argc, argv, test_cases, TEST_CASES_NUMBER(test_cases), 0);
}