Update.
[glibc.git] / stdlib / testrand.c
blob6b1605a79f9a10347b7082a18e0d0b17942f6cd4
1 /* Copyright (C) 1992, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <stdlib.h>
20 #include <stdio.h>
22 int
23 main (void)
25 int i1, i2;
26 int j1, j2;
28 /* The C standard says that "If rand is called before any calls to
29 srand have been made, the same sequence shall be generated as
30 when srand is first called with a seed value of 1." */
31 i1 = rand();
32 i2 = rand();
33 srand (1);
34 j1 = rand();
35 j2 = rand();
36 if (i1 < 0 || i2 < 0 || j1 < 0 || j2 < 0) {
37 puts ("Test FAILED!");
39 if (j1 == i1 && j2 == i2)
41 puts ("Test succeeded.");
42 return 0;
44 else
46 if (j1 != i1)
47 printf ("%d != %d\n", j1, i1);
48 if (j2 != i2)
49 printf ("%d != %d\n", j2, i2);
50 puts ("Test FAILED!");
51 return 1;