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/***************************************************************************
* *
* copyright (C) 2003, 2004 by Michael Buesch *
* email: mbuesch@freenet.de *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License version 2 *
* as published by the Free Software Foundation. *
* *
***************************************************************************/
/***************************************************************************
* copyright (C) 2004 by Ulf Schenk
* This file is originaly based on version 1.0.1 of pwmanager
* and was modified to run on embedded devices that run microkde
*
* $Id$
**************************************************************************/
#ifndef RANDOMIZER_H
#define RANDOMIZER_H
#include "pwmexception.h"
#include <stdio.h>
/** simple randomizer
* This class is *NOT* reentrant save!
*/
class Randomizer
{
public:
Randomizer();
~Randomizer();
static Randomizer * obj()
{
PWM_ASSERT(rndObj);
return rndObj;
}
static void init()
{
PWM_ASSERT(!rndObj);
rndObj = new Randomizer;
}
static void cleanup()
{
delete_ifnot_null(rndObj);
}
/** generate random char */
char genRndChar();
/** generate random int */
int genRndInt();
/** generate random unsigned int */
unsigned int genRndUInt();
protected:
/** random-device-node (if available. Otherwise NULL) */
FILE *rndDev;
/** seed value for fallback - rand_r() */
unsigned int seed;
/** static Randomier object returned by obj() */
static Randomizer *rndObj;
};
#endif
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