source: trunk/test/rnd_test.cc @ 865

// $Id: rnd_test.cc 865 2007-09-10 19:41:04Z peter $

/*
  Copyright (C) 2003 Daniel Dalevi
  Copyright (C) 2004 Jari Häkkinen
  Copyright (C) 2005 Jari Häkkinen, Peter Johansson
  Copyright (C) 2006, 2007 Jari Häkkinen

  This file is part of the yat library, http://trac.thep.lu.se/trac/yat

  The yat library 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 2 of the
  License, or (at your option) any later version.

  The yat 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
  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 "yat/random/random.h"
#include "yat/statistics/Histogram.h"

#include <iostream>
#include <sstream>
#include <fstream>

int main(const int argc,const char* argv[])
{
  using namespace theplu::yat::random;
  std::ostream* message;
  if (argc>1 && argv[1]==std::string("-v"))
    message = &std::cerr;
  else {
    message = new std::ofstream("/dev/null");
    if (argc>1)
      std::cout << "rnd_test -v : for printing extra information\n";
  }
  *message << "testing rnd" << std::endl;
  bool ok = true;

  RNG* rng=RNG::instance();
  rng->seed_from_devurandom();

  // testing that minimal integer is zero for the generator
  *message << "Checking that RNG minimum value is zero" << std::endl;
  if (rng->min()){
    *message << "Error: rng->min is not zero" << std::endl;
    ok = false;
  }

  *message << "Checking that all random generator can be constructed"
           << std::endl;
  theplu::yat::statistics::Histogram histogram(0,100,1000);
  DiscreteGeneral dg(histogram);
  DiscreteUniform du;
  Poisson p;
  ContinuousUniform cu;
  ContinuousGeneral cg(histogram);
  Exponential e;
  Gaussian g;

  if (message!=&std::cerr)
    delete message;

  return (ok ? 0 : -1);
}