56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
|
|
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
|
|
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef __PJ_COMPAT_RAND_H__
|
|
#define __PJ_COMPAT_RAND_H__
|
|
|
|
/**
|
|
* @file rand.h
|
|
* @brief Provides platform_rand() and platform_srand() functions.
|
|
*/
|
|
|
|
#if defined(PJ_HAS_STDLIB_H) && PJ_HAS_STDLIB_H != 0
|
|
/*
|
|
* Use stdlib based rand() and srand().
|
|
*/
|
|
# include <stdlib.h>
|
|
# define platform_srand srand
|
|
# if defined(RAND_MAX) && RAND_MAX <= 0xFFFF
|
|
/*
|
|
* When rand() is only 16 bit strong, double the strength
|
|
* by calling it twice!
|
|
*/
|
|
PJ_INLINE(int) platform_rand(void)
|
|
{
|
|
return ((rand() & 0xFFFF) << 16) | (rand() & 0xFFFF);
|
|
}
|
|
# else
|
|
# define platform_rand rand
|
|
# endif
|
|
|
|
#else
|
|
# warning "platform_rand() is not implemented"
|
|
# define platform_rand() 1
|
|
# define platform_srand(seed)
|
|
|
|
#endif
|
|
|
|
|
|
#endif /* __PJ_COMPAT_RAND_H__ */
|
|
|