1/* Test initstate saving the old state.
2 Copyright (C) 2005-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <stdio.h>
20#include <stdlib.h>
21
22static int
23do_test (void)
24{
25 int pass;
26 int ret = 0;
27 long int r[2];
28
29 for (pass = 0; pass < 2; pass++)
30 {
31 srandom (seed: 0x12344321);
32
33 int j;
34 for (j = 0; j < 3; ++j)
35 random ();
36 if (pass == 1)
37 {
38 char state[128];
39 char *ostate = initstate (seed: 0x34562101, statebuf: state, statelen: 128);
40 if (setstate (ostate) != state)
41 {
42 puts (s: "setstate (ostate) != state");
43 ret = 1;
44 }
45 }
46
47 random ();
48 r[pass] = random ();
49 }
50
51 if (r[0] != r[1])
52 {
53 printf (format: "%ld != %ld\n", r[0], r[1]);
54 ret = 1;
55 }
56 return ret;
57}
58
59#define TEST_FUNCTION do_test ()
60#include "../test-skeleton.c"
61

source code of glibc/stdlib/tst-random2.c