86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
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/* Test the Mersenne Twister random number generator.
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Copyright 2002 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include <stdio.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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#ifndef TRUE
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#define TRUE (1)
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#endif
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#ifndef FALSE
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#define FALSE (0)
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#endif
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/* Test that the sequence without seeding equals the sequence with the
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default seed. */
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int
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chk_default_seed (void)
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{
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gmp_randstate_t r1, r2;
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mpz_t a, b;
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int i;
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int ok = TRUE;
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mpz_init2 (a, 19936L);
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mpz_init2 (b, 19936L);
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gmp_randinit_mt (r1);
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gmp_randinit_mt (r2);
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gmp_randseed_ui (r2, 5489L); /* Must match DEFAULT_SEED in randmt.c */
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for (i = 0; i < 3; i++)
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{
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/* Extract one whole buffer per iteration. */
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mpz_urandomb (a, r1, 19936L);
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mpz_urandomb (b, r2, 19936L);
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if (mpz_cmp (a, b) != 0)
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{
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ok = FALSE;
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printf ("Default seed fails in iteration %d\n", i);
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break;
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}
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}
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gmp_randclear (r1);
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gmp_randclear (r2);
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mpz_clear (a);
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mpz_clear (b);
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return ok;
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}
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int
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main (int argc, char *argv[])
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{
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int ok;
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tests_start ();
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ok = chk_default_seed ();
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tests_end ();
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if (ok)
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return 0; /* pass */
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else
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return 1; /* fail */
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}
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