/*
 *
 *  $Id$
 *
 *  This file is part of the Virtual Leaf.
 *
 *  The Virtual Leaf 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 3 of the License, or
 *  (at your option) any later version.
 *
 *  The Virtual Leaf 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 the Virtual Leaf.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Copyright 2010 Roeland Merks.
 *
 */


#ifndef _RANDOM_H_
#define _RANDOM_H_

#define MBIG 1000000000
#define MSEED 161803398
#define MZ 0
#define FAC (1.0/MBIG)

double RANDOM();
int Seed(int seed);
long RandomNumber(long max);
void AskSeed();
int Randomize(void);
int RandomCounter(void);



// Class MyUrand, so we can pass the random generator to STL's random_shuffle,
// and get identical simulations for a given random seed.
class MyUrand {
 
  long n;
 public:
  MyUrand(long nn) {
    n=nn;
  }
  MyUrand(void){};
 
  void seed(long s) {
    Seed(s);
  }
  
  long operator()(long nn) { return RandomNumber(nn)-1; }
  long operator()(void) { return RandomNumber(n); }
};






#endif