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 find_fn_imps.hpp
44 * Contains an implementation class for a binary_heap.
45 */
46
47PB_DS_CLASS_T_DEC
48inline typename PB_DS_CLASS_C_DEC::const_reference
49PB_DS_CLASS_C_DEC::
50top() const
51{
52  _GLIBCXX_DEBUG_ONLY(assert_valid();)
53    _GLIBCXX_DEBUG_ASSERT(!empty());
54
55  return top_imp(s_no_throw_copies_ind);
56}
57
58PB_DS_CLASS_T_DEC
59inline typename PB_DS_CLASS_C_DEC::const_reference
60PB_DS_CLASS_C_DEC::
61top_imp(true_type) const
62{
63  return* m_a_entries;
64}
65
66PB_DS_CLASS_T_DEC
67inline typename PB_DS_CLASS_C_DEC::const_reference
68PB_DS_CLASS_C_DEC::
69top_imp(false_type) const
70{
71  return** m_a_entries;
72}
73
74PB_DS_CLASS_T_DEC
75inline typename PB_DS_CLASS_C_DEC::size_type
76PB_DS_CLASS_C_DEC::
77left_child(size_type i)
78{
79  return i*  2 + 1;
80}
81
82PB_DS_CLASS_T_DEC
83inline typename PB_DS_CLASS_C_DEC::size_type
84PB_DS_CLASS_C_DEC::
85right_child(size_type i)
86{
87  return i*  2 + 2;
88}
89
90PB_DS_CLASS_T_DEC
91inline typename PB_DS_CLASS_C_DEC::size_type
92PB_DS_CLASS_C_DEC::
93parent(size_type i)
94{
95  return (i - 1) / 2;
96}
97
98