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36fed23c | 1 | // -*- C++ -*- |
2 | ||
fbd26352 | 3 | // Copyright (C) 2005-2019 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 | /** | |
4f4a327e | 37 | * @file binary_heap_/find_fn_imps.hpp |
36fed23c | 38 | * Contains an implementation class for a binary_heap. |
39 | */ | |
40 | ||
41 | PB_DS_CLASS_T_DEC | |
42 | inline typename PB_DS_CLASS_C_DEC::const_reference | |
43 | PB_DS_CLASS_C_DEC:: | |
44 | top() const | |
45 | { | |
2548203e | 46 | PB_DS_ASSERT_VALID((*this)) |
47 | _GLIBCXX_DEBUG_ASSERT(!empty()); | |
36fed23c | 48 | return top_imp(s_no_throw_copies_ind); |
49 | } | |
50 | ||
51 | PB_DS_CLASS_T_DEC | |
52 | inline typename PB_DS_CLASS_C_DEC::const_reference | |
53 | PB_DS_CLASS_C_DEC:: | |
54 | top_imp(true_type) const | |
4f4a327e | 55 | { return *m_a_entries; } |
36fed23c | 56 | |
57 | PB_DS_CLASS_T_DEC | |
58 | inline typename PB_DS_CLASS_C_DEC::const_reference | |
59 | PB_DS_CLASS_C_DEC:: | |
60 | top_imp(false_type) const | |
4f4a327e | 61 | { return **m_a_entries; } |
36fed23c | 62 | |
63 | PB_DS_CLASS_T_DEC | |
64 | inline typename PB_DS_CLASS_C_DEC::size_type | |
65 | PB_DS_CLASS_C_DEC:: | |
66 | left_child(size_type i) | |
4f4a327e | 67 | { return i * 2 + 1; } |
36fed23c | 68 | |
69 | PB_DS_CLASS_T_DEC | |
70 | inline typename PB_DS_CLASS_C_DEC::size_type | |
71 | PB_DS_CLASS_C_DEC:: | |
72 | right_child(size_type i) | |
4f4a327e | 73 | { return i * 2 + 2; } |
36fed23c | 74 | |
75 | PB_DS_CLASS_T_DEC | |
76 | inline typename PB_DS_CLASS_C_DEC::size_type | |
77 | PB_DS_CLASS_C_DEC:: | |
78 | parent(size_type i) | |
4f4a327e | 79 | { return (i - 1) / 2; } |