1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the terms
7// of the GNU General Public License as published by the Free Software
8// Foundation; either version 2, or (at your option) any later
9// version.
10
11// This library is distributed in the hope that it will be useful, but
12// WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14// General Public License for more details.
15
16// You should have received a copy of the GNU General Public License
17// along with this library; see the file COPYING.  If not, write to
18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19// MA 02111-1307, USA.
20
21// As a special exception, you may use this file as part of a free
22// software library without restriction.  Specifically, if other files
23// instantiate templates or use macros or inline functions from this
24// file, or you compile this file and link it with other files to
25// produce an executable, this file does not by itself cause the
26// resulting executable to be covered by the GNU General Public
27// License.  This exception does not however invalidate any other
28// reasons why the executable file might be covered by the GNU General
29// Public License.
30
31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32
33// Permission to use, copy, modify, sell, and distribute this software
34// is hereby granted without fee, provided that the above copyright
35// notice appears in all copies, and that both that copyright notice
36// and this permission notice appear in supporting documentation. None
37// of the above authors, nor IBM Haifa Research Laboratories, make any
38// representation about the suitability of this software for any
39// purpose. It is provided "as is" without express or implied
40// warranty.
41
42/**
43 * @file sample_size_policy.hpp
44 * Contains a sample size resize-policy.
45 */
46
47#ifndef PB_DS_SAMPLE_SIZE_POLICY_HPP
48#define PB_DS_SAMPLE_SIZE_POLICY_HPP
49
50// A sample size policy.
51class sample_size_policy
52{
53public:
54
55  // Size type.
56  typedef size_t size_type;
57
58  // Default constructor.
59  sample_size_policy();
60
61  // Copy constructor.
62  sample_range_hashing(const sample_size_policy& other);
63
64  // Swaps content.
65  inline void
66  swap(sample_size_policy& other);
67
68protected:
69
70  // Given a __size size, returns a __size that is larger.
71  inline size_type
72  get_nearest_larger_size(size_type size) const;
73
74  // Given a __size size, returns a __size that is smaller.
75  inline size_type
76  get_nearest_smaller_size(size_type size) const;
77};
78
79#endif
80