random.h

在LINUX下运行的仿真机器人服务器源代码

// -*-c++-*-

/***************************************************************************
                                  random.h
                            Random Number Generator
                             -------------------
    begin                : 17-JAN-2002
    copyright            : (C) 2002 by The RoboCup Soccer Server 
                           Maintainance Group.
    email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU LGPL as published by the Free Software  *
 *   Foundation; either version 2 of the License, or (at your option) any  *
 *   later version.                                                        *
 *                                                                         *
 ***************************************************************************/


#ifndef _RCSS_RANDOM_H_
#define _RCSS_RANDOM_H_

#include <boost/random.hpp>

#include <cstdlib>
#include <sys/time.h>
#include <memory>

// old random code
#define RANDOMBASE		1000
#define IRANDOMBASE		31

#define drand(h,l)	(((((h)-(l)) * ((double)(random()%RANDOMBASE) / (double)RANDOMBASE))) + (l))
#define	irand(x)	((random() / IRANDOMBASE) % (x))

#include <boost/random.hpp>

namespace rcss 
{
  namespace random 
  {
      class DefaultRNG
          : public boost::mt19937
      {
      public:
          static
          DefaultRNG&
          instance ()
          { static DefaultRNG the_instance; return the_instance; }
          
          static
          DefaultRNG&
#if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x520)
          // Work around overload resolution problem (Gennadiy E. Rozental)
          instance( const boost::mt19937::result_type& value )
#else
          instance( boost::mt19937::result_type value )
#endif
          { instance().seed( value ); return instance(); }

          // For GCC, moving this function out-of-line prevents inlining, which may
          // reduce overall object code size.  However, MSVC does not grok
          // out-of-line definitions of member function templates.
          template<class Generator>
          static
          DefaultRNG&
          instance( Generator& gen )
          { instance().seed( gen ); return instance(); }
      private:
          DefaultRNG()
              : boost::mt19937()
          {}
      }; 

      class UniformRNG
          : public boost::random_number_generator< rcss::random::DefaultRNG >
      {
      public:
          static
          UniformRNG&
          instance ()
          { static UniformRNG the_instance; return the_instance; }
           
      private:
          UniformRNG()
              : boost::random_number_generator< rcss::random::DefaultRNG >( DefaultRNG::instance() )
          {}
      };

  

  } // namespace random
} // namespace rcss




#endif // _RCSS_RANDOM_H_