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// -*- C++ -*-

// Copyright (C) 2005 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 2, 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.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// As a special exception, you may use this file as part of a free software

// library without restriction.  Specifically, if other files instantiate

// templates or use macros or inline functions from this file, or you compile

// this file and link it with other files to produce an executable, this

// file does not by itself cause the resulting executable to be covered by

// the GNU General Public License.  This exception does not however

// invalidate any other reasons why the executable file might be covered by

// the GNU General Public License.

// 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 hash_prime_size_policy_imp.hpp

 * Contains an implementation of hash_prime_size_policy.

 */

namespace detail

{

  enum

    {

      num_distinct_sizes = 28

    };

  static const size_t s_a_sizes[num_distinct_sizes] =

    {

      /* Dealing cards... */

      /* 0      */ 53ul,

      /* 1      */ 97ul,

      /* 2      */ 193ul,

      /* 3      */ 389ul,

      /* 4      */ 769ul,

      /* 5      */ 1543ul,

      /* 6      */ 3079ul,

      /* 7      */ 6151ul,

      /* 8      */ 12289ul,

      /* 9      */ 24593ul,

      /* 10     */ 49157ul,

      /* 11     */ 98317ul,

      /* 12     */ 196613ul,

      /* 13     */ 393241ul,

      /* 14     */ 786433ul,

      /* 15     */ 1572869ul,

      /* 16     */ 3145739ul,

      /* 17     */ 6291469ul,

      /* 18     */ 12582917ul,

      /* 19     */ 25165843ul,

      /* 20     */ 50331653ul,

      /* 21     */ 100663319ul,

      /* 22     */ 201326611ul,

      /* 23     */ 402653189ul,

      /* 24     */ 805306457ul,

      /* 25     */ 1610612741,

      /* 26     */ 3221225473ul,

      /* 27     */ 4294967291ul

      /* Pot's good, let's play */

    };

} // namespace detail

PB_ASSOC_CLASS_T_DEC

inline void

PB_ASSOC_CLASS_C_DEC::

swap(PB_ASSOC_CLASS_C_DEC& /*r_other*/)

{ }

PB_ASSOC_CLASS_T_DEC

PB_ASSOC_CLASS_C_DEC::size_type

PB_ASSOC_CLASS_C_DEC::

get_init_size(size_type suggested_size) const

{

  return (get_nearest_larger_size_imp(suggested_size));

}

PB_ASSOC_CLASS_T_DEC

inline PB_ASSOC_CLASS_C_DEC::size_type

PB_ASSOC_CLASS_C_DEC::

get_nearest_larger_size(size_type cur_size) const

{

  PB_ASSOC_DBG_ONLY(assert_is_one_of_my_sizes(cur_size);)

    return (get_nearest_larger_size_imp(cur_size));

}

PB_ASSOC_CLASS_T_DEC

inline PB_ASSOC_CLASS_C_DEC::size_type

PB_ASSOC_CLASS_C_DEC::

get_nearest_smaller_size(size_type cur_size) const

{

  PB_ASSOC_DBG_ONLY(assert_is_one_of_my_sizes(cur_size);)

    return (*std::lower_bound(detail::s_a_sizes, detail::s_a_sizes + detail::num_distinct_sizes, cur_size - 1));

}

PB_ASSOC_CLASS_T_DEC

inline PB_ASSOC_CLASS_C_DEC::size_type

PB_ASSOC_CLASS_C_DEC::

get_nearest_larger_size_imp(size_type size) const

{

  const size_t* const p_upper =

    std::upper_bound(detail::s_a_sizes, detail::s_a_sizes + detail::num_distinct_sizes, size);

  return ((p_upper == detail::s_a_sizes + detail::num_distinct_sizes)?

          size :

          *p_upper);

}

#ifdef PB_ASSOC_HT_PRIME_SIZE_POLICY_DEBUG

PB_ASSOC_CLASS_T_DEC

void

PB_ASSOC_CLASS_C_DEC::

assert_is_one_of_my_sizes(size_type size)

{

  const size_t* const p_end =

    detail::s_a_sizes + detail::num_distinct_sizes;

  const size_t* const p_found =

    std::find(detail::s_a_sizes, p_end, size)

    PB_ASSOC_DBG_ASSERT(p_found != p_end);

}

#endif // #ifdef PB_ASSOC_HT_PRIME_SIZE_POLICY_DEBUG