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random_seed.c
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1 /*
2  * Copyright (c) 2009 Baptiste Coudurier <baptiste.coudurier@gmail.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #define TEST 1
22 #include "libavutil/random_seed.c"
23 
24 #undef printf
25 #define N 256
26 #include <stdio.h>
27 
28 int main(void)
29 {
30  int i, j, retry;
31  uint32_t seeds[N];
32 
33  for (retry=0; retry<3; retry++){
34  for (i=0; i<N; i++){
35  seeds[i] = av_get_random_seed();
36  for (j=0; j<i; j++)
37  if (seeds[j] == seeds[i])
38  goto retry;
39  }
40  printf("seeds OK\n");
41  return 0;
42  retry:;
43  }
44  printf("FAIL at %d with %X\n", j, seeds[j]);
45  return 1;
46 }
int main(void)
Definition: random_seed.c:28
#define N
Definition: random_seed.c:25
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:114