FFmpeg
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 #define F 2
27 #include <stdio.h>
28 
29 typedef uint32_t (*random_seed_ptr_t)(void);
30 
31 int main(void)
32 {
33  int i, j, rsf, retry;
34  uint32_t seeds[N];
36 
37  for (rsf=0; rsf<F; ++rsf){
38  for (retry=0; retry<3; retry++){
39  for (i=0; i<N; i++){
40  seeds[i] = random_seed[rsf]();
41  for (j=0; j<i; j++)
42  if (seeds[j] == seeds[i])
43  goto retry;
44  }
45  printf("seeds OK\n");
46  break;
47  retry:;
48  }
49  if (retry >= 3) {
50  printf("rsf %d: FAIL at %d with %"PRIX32"\n", rsf, j, seeds[j]);
51  return 1;
52  }
53  }
54  return 0;
55 }
int main(void)
Definition: random_seed.c:31
static uint32_t get_generic_seed(void)
Definition: random_seed.c:65
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define N
Definition: random_seed.c:25
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
#define F
Definition: random_seed.c:26
printf("static const uint8_t my_array[100] = {\n")
uint32_t(* random_seed_ptr_t)(void)
Definition: random_seed.c:29
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:120