libstdc++
binary_heap_/find_fn_imps.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2020 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.
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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
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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
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24 
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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27 // Permission to use, copy, modify, sell, and distribute this software
28 // is hereby granted without fee, provided that the above copyright
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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 
43 PB_DS_CLASS_T_DEC
44 inline typename PB_DS_CLASS_C_DEC::const_reference
45 PB_DS_CLASS_C_DEC::
46 top() const
47 {
48  PB_DS_ASSERT_VALID((*this))
49  _GLIBCXX_DEBUG_ASSERT(!empty());
50  return top_imp(s_no_throw_copies_ind);
51 }
52 
53 PB_DS_CLASS_T_DEC
54 inline typename PB_DS_CLASS_C_DEC::const_reference
55 PB_DS_CLASS_C_DEC::
56 top_imp(true_type) const
57 { return *m_a_entries; }
58 
59 PB_DS_CLASS_T_DEC
60 inline typename PB_DS_CLASS_C_DEC::const_reference
61 PB_DS_CLASS_C_DEC::
62 top_imp(false_type) const
63 { return **m_a_entries; }
64 
65 PB_DS_CLASS_T_DEC
66 inline typename PB_DS_CLASS_C_DEC::size_type
67 PB_DS_CLASS_C_DEC::
68 left_child(size_type i)
69 { return i * 2 + 1; }
70 
71 PB_DS_CLASS_T_DEC
72 inline typename PB_DS_CLASS_C_DEC::size_type
73 PB_DS_CLASS_C_DEC::
74 right_child(size_type i)
75 { return i * 2 + 2; }
76 
77 PB_DS_CLASS_T_DEC
78 inline typename PB_DS_CLASS_C_DEC::size_type
79 PB_DS_CLASS_C_DEC::
80 parent(size_type i)
81 { return (i - 1) / 2; }
82 #endif
integral_constant< bool, true > true_type
The type used as a compile-time boolean with true value.
Definition: type_traits:75
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
Definition: type_traits:78