VLC  4.0.0-dev
vlc_rand.h
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1 /*****************************************************************************
2  * vlc_rand.h: RNG
3  *****************************************************************************
4  * Copyright © 2007 Rémi Denis-Courmont
5  *
6  * This program is free software; you can redistribute it and/or modify it
7  * under the terms of the GNU Lesser General Public License as published by
8  * the Free Software Foundation; either version 2.1 of the License, or
9  * (at your option) any later version.
10  *
11  * This program 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
14  * GNU Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public License
17  * along with this program; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
19  *****************************************************************************/
20 
21 #ifndef VLC_RAND_H
22 # define VLC_RAND_H
23 
24 /**
25  * \file
26  * This file defined random number generator function in vlc
27  */
28 
29 VLC_API void vlc_rand_bytes(void *buf, size_t len);
30 
31 /* Interlocked (but not reproducible) functions for the POSIX PRNG */
32 VLC_API double vlc_drand48(void) VLC_USED;
33 VLC_API long vlc_lrand48(void) VLC_USED;
34 VLC_API long vlc_mrand48(void) VLC_USED;
35 
36 #endif
VLC_API
#define VLC_API
Definition: fourcc_gen.c:31
vlc_common.h
vlc_rand_bytes
VLC_EXPORT void vlc_rand_bytes(void *buf, size_t len)
Definition: rand.c:28
vlc_lrand48
VLC_EXPORT long vlc_lrand48(void)
PRNG uniformly distributed between 0 and 2^32 - 1.
Definition: rand.c:77
vlc_drand48
VLC_EXPORT double vlc_drand48(void)
PRNG uniformly distributed between 0.0 and 1.0 with 48-bits precision.
Definition: rand.c:57
VLC_USED
#define VLC_USED
Definition: fourcc_gen.c:32
vlc_mrand48
VLC_EXPORT long vlc_mrand48(void)
PRNG uniformly distributed between -2^32 and 2^32 - 1.
Definition: rand.c:97