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36fed23c | 1 | // -*- C++ -*- |
2 | ||
71e45bc2 | 3 | // Copyright (C) 2005, 2006, 2009, 2010, 2011 Free Software Foundation, Inc. |
36fed23c | 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 | |
6bc9506f | 8 | // Foundation; either version 3, or (at your option) any later |
36fed23c | 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 | ||
6bc9506f | 16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
36fed23c | 19 | |
6bc9506f | 20 | // You should have received a copy of the GNU General Public License and |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
36fed23c | 24 | |
25 | // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. | |
26 | ||
27 | // Permission to use, copy, modify, sell, and distribute this software | |
28 | // is hereby granted without fee, provided that the above copyright | |
29 | // notice appears in all copies, and that both that copyright notice | |
30 | // and this permission notice appear in supporting documentation. None | |
31 | // of the above authors, nor IBM Haifa Research Laboratories, make any | |
32 | // representation about the suitability of this software for any | |
33 | // purpose. It is provided "as is" without express or implied | |
34 | // warranty. | |
35 | ||
36 | /** | |
37 | * @file sample_size_policy.hpp | |
38 | * Contains a sample size resize-policy. | |
39 | */ | |
40 | ||
41 | #ifndef PB_DS_SAMPLE_SIZE_POLICY_HPP | |
42 | #define PB_DS_SAMPLE_SIZE_POLICY_HPP | |
43 | ||
4f4a327e | 44 | namespace __gnu_pbds |
36fed23c | 45 | { |
4f4a327e | 46 | /// A sample size policy. |
47 | class sample_size_policy | |
48 | { | |
49 | public: | |
3f2eba6f | 50 | /// Size type. |
4f4a327e | 51 | typedef std::size_t size_type; |
52 | ||
3f2eba6f | 53 | /// Default constructor. |
4f4a327e | 54 | sample_size_policy(); |
55 | ||
3f2eba6f | 56 | /// Copy constructor. |
4f4a327e | 57 | sample_range_hashing(const sample_size_policy&); |
58 | ||
3f2eba6f | 59 | /// Swaps content. |
4f4a327e | 60 | inline void |
61 | swap(sample_size_policy& other); | |
62 | ||
63 | protected: | |
3f2eba6f | 64 | /// Given a __size size, returns a __size that is larger. |
4f4a327e | 65 | inline size_type |
66 | get_nearest_larger_size(size_type size) const; | |
67 | ||
3f2eba6f | 68 | /// Given a __size size, returns a __size that is smaller. |
4f4a327e | 69 | inline size_type |
70 | get_nearest_smaller_size(size_type size) const; | |
71 | }; | |
72 | } | |
73 | #endif |