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2005-02-09 Jakub Jelinek <jakub@redhat.com> [BZ #710] * stdlib/random_r.c (__initstate_r): Save old state. * stdlib/Makefile (tests): Add tst-random2. * stdlib/tst-random2.c: New test. Reported by Peter Bergner <bergner@vnet.ibm.com>. (s390-.*-.*, powerpc.*-.*-.*, sparc.*-.*-.*): Add WORDSIZE64 entries for these mapping back to the above.
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/* Test initstate saving the old state.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2005.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdio.h>
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#include <stdlib.h>
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int
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main (void)
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{
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int pass;
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int ret = 0;
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long int r[2];
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for (pass = 0; pass < 2; pass++)
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{
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srandom (0x12344321);
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int j;
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for (j = 0; j < 3; ++j)
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random ();
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if (pass == 1)
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{
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char state[128];
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char *ostate = initstate (0x34562101, state, 128);
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if (setstate (ostate) != state)
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{
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puts ("setstate (ostate) != state");
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ret = 1;
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}
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}
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random ();
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r[pass] = random ();
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}
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if (r[0] != r[1])
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{
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printf ("%ld != %ld\n", r[0], r[1]);
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ret = 1;
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}
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return ret;
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}
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