// -*- C++ -*-

// Copyright (C) 2005-2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.   This 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 3, or (at your option) any later
// version. 

// This 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. 

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation. 

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.   If not, see
// <http://www.gnu.org/licenses/>. 

// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 

// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation.  None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied
// warranty. 

/**
 * @file sample_size_policy.hpp
 * Contains a sample size resize-policy. 
 */

#ifndef PB_DS_SAMPLE_SIZE_POLICY_HPP
#define PB_DS_SAMPLE_SIZE_POLICY_HPP

namespace __gnu_pbds
{
  /// A sample size policy. 
  class sample_size_policy
  {
  public:
    /// Size type. 
    typedef std::size_t size_type;

    /// Default constructor. 
    sample_size_policy();

    /// Copy constructor. 
    sample_range_hashing(const sample_size_policy&);

    /// Swaps content. 
    inline void
    swap(sample_size_policy& other);

  protected:
    /// Given a __size size, returns a __size that is larger. 
    inline size_type
    get_nearest_larger_size(size_type size) const;

    /// Given a __size size, returns a __size that is smaller. 
    inline size_type
    get_nearest_smaller_size(size_type size) const;
  };
}
#endif
