utils_misc.h

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/***************************************************************************
 *   Copyright (C) 2005 by Pierre-Henri WUILLEMIN et Christophe GONZALES   *
 *   {prenom.nom}_at_lip6.fr                                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it udnder 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.                                   *
 *                                                                         *
 *   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.             *
 ***************************************************************************/
#ifndef GUM_UTILS_H
#define GUM_UTILS_H

#include <cstdlib>
#include <iostream>
#include <numeric>
#include <utility>
#include <vector>
#include <tuple>
#include <string>
#include <type_traits>


#ifdef GUM_DEBUG_MODE
#  define GUM_CAST dynamic_cast
#else
#  define GUM_CAST static_cast
#endif   // GUM_DEBUG_MODE

#include <agrum/agrum.h>

#include <agrum/core/utils_dir.h>
#include <agrum/core/utils_random.h>
#include <agrum/core/utils_string.h>

namespace std {


  template < typename T1, typename T2 >
  ostream& operator<<(ostream& stream, const pair< T1, T2 >& val);

  template < typename T0, typename... T >
  std::ostream& operator<<(std::ostream& os, const std::tuple< T0, T... >& t);


  template < typename T >
  ostream& operator<<(ostream& stream, const vector< T >& val);

  template < typename T >
  bool hasUniqueElts(std::vector< T > const& x);


} /* namespace std */

namespace gum {


  template < typename T1, typename T2 >
  using forbidden_type =
     typename std::enable_if< !std::is_same< T1, T2 >::value, int >::type;

  struct NullStream : std::ostream {
    NullStream() : std::ios(0), std::ostream(0) {}
  };

  bool Memcmp(const void* const _in, const void* const _out, unsigned long size);

  void __atexit();

  template < typename T >
  struct AlmostDifferent {
    bool operator()(const T& t1, const T& t2) {
      if (t1 == t2)
        return false;
      else if (t1 == 0)
        return (std::abs(t2) > 1e-5);
      else
        return (std::abs(t2 - t1) / t1 > 1e-5);
    }
  };

  template < typename T >
  struct AlmostDifferent< T* > {
    bool operator()(const T* t1, const T* t2) { return (t1 != t2); }
  };


} /* namespace gum */

// Always include the template implementations
#include <agrum/core/utils_misc_tpl.h>

#endif /* GUM_UTILS_H */