1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006, 2009 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 find_fn_imps.hpp
38 * Contains an implementation class for a binary_heap.
39 */
40
41PB_DS_CLASS_T_DEC
42inline typename PB_DS_CLASS_C_DEC::const_reference
43PB_DS_CLASS_C_DEC::
44top() const
45{
46  _GLIBCXX_DEBUG_ONLY(assert_valid();)
47    _GLIBCXX_DEBUG_ASSERT(!empty());
48
49  return top_imp(s_no_throw_copies_ind);
50}
51
52PB_DS_CLASS_T_DEC
53inline typename PB_DS_CLASS_C_DEC::const_reference
54PB_DS_CLASS_C_DEC::
55top_imp(true_type) const
56{
57  return* m_a_entries;
58}
59
60PB_DS_CLASS_T_DEC
61inline typename PB_DS_CLASS_C_DEC::const_reference
62PB_DS_CLASS_C_DEC::
63top_imp(false_type) const
64{
65  return** m_a_entries;
66}
67
68PB_DS_CLASS_T_DEC
69inline typename PB_DS_CLASS_C_DEC::size_type
70PB_DS_CLASS_C_DEC::
71left_child(size_type i)
72{
73  return i*  2 + 1;
74}
75
76PB_DS_CLASS_T_DEC
77inline typename PB_DS_CLASS_C_DEC::size_type
78PB_DS_CLASS_C_DEC::
79right_child(size_type i)
80{
81  return i*  2 + 2;
82}
83
84PB_DS_CLASS_T_DEC
85inline typename PB_DS_CLASS_C_DEC::size_type
86PB_DS_CLASS_C_DEC::
87parent(size_type i)
88{
89  return (i - 1) / 2;
90}
91
92