libstdc++
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00001 // -*- C++ -*- 00002 00003 // Copyright (C) 2005, 2006, 2009, 2011 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the terms 00007 // of the GNU General Public License as published by the Free Software 00008 // Foundation; either version 3, or (at your option) any later 00009 // version. 00010 00011 // This library is distributed in the hope that it will be useful, but 00012 // WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 // General Public License for more details. 00015 00016 // Under Section 7 of GPL version 3, you are granted additional 00017 // permissions described in the GCC Runtime Library Exception, version 00018 // 3.1, as published by the Free Software Foundation. 00019 00020 // You should have received a copy of the GNU General Public License and 00021 // a copy of the GCC Runtime Library Exception along with this program; 00022 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 00023 // <http://www.gnu.org/licenses/>. 00024 00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 00026 00027 // Permission to use, copy, modify, sell, and distribute this software 00028 // is hereby granted without fee, provided that the above copyright 00029 // notice appears in all copies, and that both that copyright notice 00030 // and this permission notice appear in supporting documentation. None 00031 // of the above authors, nor IBM Haifa Research Laboratories, make any 00032 // representation about the suitability of this software for any 00033 // purpose. It is provided "as is" without express or implied 00034 // warranty. 00035 00036 /** 00037 * @file binary_heap_/find_fn_imps.hpp 00038 * Contains an implementation class for a binary_heap. 00039 */ 00040 00041 PB_DS_CLASS_T_DEC 00042 inline typename PB_DS_CLASS_C_DEC::const_reference 00043 PB_DS_CLASS_C_DEC:: 00044 top() const 00045 { 00046 PB_DS_ASSERT_VALID((*this)) 00047 _GLIBCXX_DEBUG_ASSERT(!empty()); 00048 return top_imp(s_no_throw_copies_ind); 00049 } 00050 00051 PB_DS_CLASS_T_DEC 00052 inline typename PB_DS_CLASS_C_DEC::const_reference 00053 PB_DS_CLASS_C_DEC:: 00054 top_imp(true_type) const 00055 { return *m_a_entries; } 00056 00057 PB_DS_CLASS_T_DEC 00058 inline typename PB_DS_CLASS_C_DEC::const_reference 00059 PB_DS_CLASS_C_DEC:: 00060 top_imp(false_type) const 00061 { return **m_a_entries; } 00062 00063 PB_DS_CLASS_T_DEC 00064 inline typename PB_DS_CLASS_C_DEC::size_type 00065 PB_DS_CLASS_C_DEC:: 00066 left_child(size_type i) 00067 { return i * 2 + 1; } 00068 00069 PB_DS_CLASS_T_DEC 00070 inline typename PB_DS_CLASS_C_DEC::size_type 00071 PB_DS_CLASS_C_DEC:: 00072 right_child(size_type i) 00073 { return i * 2 + 2; } 00074 00075 PB_DS_CLASS_T_DEC 00076 inline typename PB_DS_CLASS_C_DEC::size_type 00077 PB_DS_CLASS_C_DEC:: 00078 parent(size_type i) 00079 { return (i - 1) / 2; }