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csutil/randomgen.h

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/*
    Copyright (C) 1998-2005 by Jorrit Tyberghein
  
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
  
    This library 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
    Library General Public License for more details.
  
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __CS_RNG_H__
#define __CS_RNG_H__

#include "csextern.h"
#include "cstypes.h"

class CS_CRYSTALSPACE_EXPORT csRandomGen
{
  int i97, j97;
  float u [98];
  float c, cd, cm;

public:
  csRandomGen ()
  { Initialize (); }
  csRandomGen (uint32 iSeed)
  { Initialize (iSeed); }

  void Initialize ();
  void Initialize (uint32 iSeed);

  float Get ()
  { return RANMAR (); }
  uint32 Get (uint32 iLimit);

  bool SelfTest ();

private:
  void InitRANMAR (uint32 ij, uint32 kl);
  float RANMAR ();
};

#endif // __CS_RNG_H__

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