libstdc++
binary_heap_/find_fn_imps.hpp
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1// -*- C++ -*-
2
3// Copyright (C) 2005-2021 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 3, 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// 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.
19
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/>.
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 binary_heap_/find_fn_imps.hpp
38 * Contains an implementation class for a binary_heap.
39 */
40
41#ifdef PB_DS_CLASS_C_DEC
42
43PB_DS_CLASS_T_DEC
44inline typename PB_DS_CLASS_C_DEC::const_reference
45PB_DS_CLASS_C_DEC::
46top() const
47{
48 PB_DS_ASSERT_VALID((*this))
49 _GLIBCXX_DEBUG_ASSERT(!empty());
50 return top_imp(s_no_throw_copies_ind);
51}
52
53PB_DS_CLASS_T_DEC
54inline typename PB_DS_CLASS_C_DEC::const_reference
55PB_DS_CLASS_C_DEC::
56top_imp(true_type) const
57{ return *m_a_entries; }
58
59PB_DS_CLASS_T_DEC
60inline typename PB_DS_CLASS_C_DEC::const_reference
61PB_DS_CLASS_C_DEC::
62top_imp(false_type) const
63{ return **m_a_entries; }
64
65PB_DS_CLASS_T_DEC
66inline typename PB_DS_CLASS_C_DEC::size_type
67PB_DS_CLASS_C_DEC::
68left_child(size_type i)
69{ return i * 2 + 1; }
70
71PB_DS_CLASS_T_DEC
72inline typename PB_DS_CLASS_C_DEC::size_type
73PB_DS_CLASS_C_DEC::
74right_child(size_type i)
75{ return i * 2 + 2; }
76
77PB_DS_CLASS_T_DEC
78inline typename PB_DS_CLASS_C_DEC::size_type
79PB_DS_CLASS_C_DEC::
80parent(size_type i)
81{ return (i - 1) / 2; }
82#endif