/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * 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;

 *

 * 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

 */

#include "ns3/simulator.h"

#include "ns3/nstime.h"

#include "ns3/command-line.h"

#include "ns3/random-variable.h"

#include <iostream>

using namespace ns3;

using namespace std;

/*

 * This program can be run from waf such as "./waf --run sample-random-variable"

 * 

 * This program is about as simple as possible to display the use of ns-3 

 * to generate random numbers.  By default, the uniform random variate that

 * will be outputted is 0.816532.  Because ns-3 uses a fixed seed for the

 * pseudo-random number generator, this program should always output the

 * same number.  Likewise, ns-3 simulations using random variables will

 * behave deterministically unless the user changes the RunNumber or the

 * 

 * There are three primary mechanisms to change the seed or run numbers

 * from their default integer value of 1

 * 1) Through explicit call of SeedManager::SetSeed () and 

 *    SeedManager::SetRun () (commented out below) 

 * 2) Through the passing of command line arguments such as:

 *    "./waf --command-template="%s --RngRun=<value>" --run program-name"

 * 3) Through the use of the NS_GLOBAL_VALUE environment variable, such as:

 *    "NS_GLOBAL_VALUE="RngRun=<value>" ./waf --run program-name"

 * 

 * For instance, setting the run number to 3 will change the program output to

 * 0.775417

 * 

 * Consult the ns-3 manual for more information about the use of the 

 * random number generator

 */

int main (int argc, char *argv[])

{

  CommandLine cmd;

  cmd.Parse (argc, argv);

  // SeedManager::SetRun (3);

  UniformVariable uv;

  cout << uv.GetValue () << endl;

}