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// -*- C++ -*-
// Copyright (C) 2005, 2006, 2009 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 mod_based_range_hashing.hpp
* Contains a range hashing policy base.
*/
#ifndef PB_DS_MOD_BASED_RANGE_HASHING_HPP
#define PB_DS_MOD_BASED_RANGE_HASHING_HPP
namespace __gnu_pbds
{
namespace detail
{
#define PB_DS_CLASS_T_DEC \
template<typename Size_Type>
#define PB_DS_CLASS_C_DEC \
mod_based_range_hashing< \
Size_Type>
template<typename Size_Type>
class mod_based_range_hashing
{
protected:
typedef Size_Type size_type;
protected:
void
swap(PB_DS_CLASS_C_DEC& other);
void
notify_resized(size_type size);
inline size_type
range_hash(size_type hash) const;
private:
size_type m_size;
};
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
swap(PB_DS_CLASS_C_DEC& other)
{
std::swap(m_size, other.m_size);
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
notify_resized(size_type size)
{
m_size = size;
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
range_hash(size_type hash) const
{
return (hash % m_size);
}
#undef PB_DS_CLASS_T_DEC
#undef PB_DS_CLASS_C_DEC
} // namespace detail
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_MOD_BASED_RANGE_HASHING_HPP
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