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/* Test the Mersenne Twister random number generator.
Copyright 2002 Free Software Foundation, Inc.
This file is part of the GNU MP Library.
The GNU MP Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The GNU MP Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
#include <stdio.h>
#include "gmp.h"
#include "gmp-impl.h"
#include "tests.h"
#ifndef TRUE
#define TRUE (1)
#endif
#ifndef FALSE
#define FALSE (0)
#endif
/* Test that the sequence without seeding equals the sequence with the
default seed. */
int
chk_default_seed (void)
{
gmp_randstate_t r1, r2;
mpz_t a, b;
int i;
int ok = TRUE;
mpz_init2 (a, 19936L);
mpz_init2 (b, 19936L);
gmp_randinit_mt (r1);
gmp_randinit_mt (r2);
gmp_randseed_ui (r2, 5489L); /* Must match DEFAULT_SEED in randmt.c */
for (i = 0; i < 3; i++)
{
/* Extract one whole buffer per iteration. */
mpz_urandomb (a, r1, 19936L);
mpz_urandomb (b, r2, 19936L);
if (mpz_cmp (a, b) != 0)
{
ok = FALSE;
printf ("Default seed fails in iteration %d\n", i);
break;
}
}
gmp_randclear (r1);
gmp_randclear (r2);
mpz_clear (a);
mpz_clear (b);
return ok;
}
int
main (int argc, char *argv[])
{
int ok;
tests_start ();
ok = chk_default_seed ();
tests_end ();
if (ok)
return 0; /* pass */
else
return 1; /* fail */
}
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