1// -*- C++ -*- 2 3// Copyright (C) 2005-2015 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 41PB_DS_CLASS_T_DEC 42inline typename PB_DS_CLASS_C_DEC::const_reference 43PB_DS_CLASS_C_DEC:: 44top() const 45{ 46 PB_DS_ASSERT_VALID((*this)) 47 _GLIBCXX_DEBUG_ASSERT(!empty()); 48 return top_imp(s_no_throw_copies_ind); 49} 50 51PB_DS_CLASS_T_DEC 52inline typename PB_DS_CLASS_C_DEC::const_reference 53PB_DS_CLASS_C_DEC:: 54top_imp(true_type) const 55{ return *m_a_entries; } 56 57PB_DS_CLASS_T_DEC 58inline typename PB_DS_CLASS_C_DEC::const_reference 59PB_DS_CLASS_C_DEC:: 60top_imp(false_type) const 61{ return **m_a_entries; } 62 63PB_DS_CLASS_T_DEC 64inline typename PB_DS_CLASS_C_DEC::size_type 65PB_DS_CLASS_C_DEC:: 66left_child(size_type i) 67{ return i * 2 + 1; } 68 69PB_DS_CLASS_T_DEC 70inline typename PB_DS_CLASS_C_DEC::size_type 71PB_DS_CLASS_C_DEC:: 72right_child(size_type i) 73{ return i * 2 + 2; } 74 75PB_DS_CLASS_T_DEC 76inline typename PB_DS_CLASS_C_DEC::size_type 77PB_DS_CLASS_C_DEC:: 78parent(size_type i) 79{ return (i - 1) / 2; } 80