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
29VLC_API void vlc_rand_bytes(void *buf, size_t len);
30
31/* Interlocked (but not reproducible) functions for the POSIX PRNG */
32VLC_API double vlc_drand48(void) VLC_USED;
33VLC_API long vlc_lrand48(void) VLC_USED;
34VLC_API long vlc_mrand48(void) VLC_USED;
35
36#endif
VLC_USED
#define VLC_USED
Definition: fourcc_gen.c:32
VLC_API
#define VLC_API
Definition: fourcc_gen.c:31
vlc_common.h
This file is a collection of common definitions and types.
vlc_lrand48
long vlc_lrand48(void)
PRNG uniformly distributed between 0 and 2^32 - 1.
Definition: rand.c:78
vlc_rand_bytes
void vlc_rand_bytes(void *buf, size_t len)
Definition: rand.c:28
vlc_drand48
double vlc_drand48(void)
PRNG uniformly distributed between 0.0 and 1.0 with 48-bits precision.
Definition: rand.c:58
vlc_mrand48
long vlc_mrand48(void)
PRNG uniformly distributed between -2^32 and 2^32 - 1.
Definition: rand.c:98