source: trunk/test/rnd_test.cc @ 798

// $Id: rnd_test.cc 798 2007-03-12 23:52:43Z jari $

/*
  Copyright (C) The authors contributing to this file.

  This file is part of the yat library, http://lev.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);
}