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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp new file mode 100644 index 000000000..e19bcb695 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp @@ -0,0 +1,216 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file pairing_heap_.hpp + * Contains an implementation class for a pairing heap. + */ + +/* + * Pairing heap: + * Michael L. Fredman, Robert Sedgewick, Daniel Dominic Sleator, + * and Robert Endre Tarjan, The Pairing Heap: + * A New Form of Self-Adjusting Heap, Algorithmica, 1(1):111-129, 1986. + */ + +#include <ext/pb_ds/detail/cond_dealtor.hpp> +#include <ext/pb_ds/detail/type_utils.hpp> +#include <ext/pb_ds/detail/left_child_next_sibling_heap_/left_child_next_sibling_heap_.hpp> +#include <ext/pb_ds/detail/left_child_next_sibling_heap_/null_metadata.hpp> +#include <debug/debug.h> + +namespace __gnu_pbds +{ + namespace detail + { + +#define PB_DS_CLASS_T_DEC \ + template<typename Value_Type, class Cmp_Fn, class Allocator> + +#define PB_DS_CLASS_C_DEC \ + pairing_heap_<Value_Type, Cmp_Fn, Allocator> + +#ifdef _GLIBCXX_DEBUG +#define PB_DS_BASE_C_DEC \ + left_child_next_sibling_heap_< \ + Value_Type, \ + Cmp_Fn, \ + null_left_child_next_sibling_heap_node_metadata, \ + Allocator, \ + false> +#else +#define PB_DS_BASE_C_DEC \ + left_child_next_sibling_heap_< \ + Value_Type, \ + Cmp_Fn, \ + null_left_child_next_sibling_heap_node_metadata, \ + Allocator> +#endif + + /** + * class description = "P4ri|\|g h3ap$"> + **/ + template<typename Value_Type, class Cmp_Fn, class Allocator> + class pairing_heap_ : public PB_DS_BASE_C_DEC + { + + private: + typedef PB_DS_BASE_C_DEC base_type; + + typedef typename base_type::node_pointer node_pointer; + + public: + + typedef typename Allocator::size_type size_type; + + typedef typename Allocator::difference_type difference_type; + + typedef Value_Type value_type; + + typedef + typename Allocator::template rebind< + value_type>::other::pointer + pointer; + + typedef + typename Allocator::template rebind< + value_type>::other::const_pointer + const_pointer; + + typedef + typename Allocator::template rebind< + value_type>::other::reference + reference; + + typedef + typename Allocator::template rebind< + value_type>::other::const_reference + const_reference; + + typedef + typename PB_DS_BASE_C_DEC::const_point_iterator + const_point_iterator; + + typedef typename PB_DS_BASE_C_DEC::point_iterator point_iterator; + + typedef typename PB_DS_BASE_C_DEC::const_iterator const_iterator; + + typedef typename PB_DS_BASE_C_DEC::iterator iterator; + + typedef Cmp_Fn cmp_fn; + + typedef Allocator allocator_type; + + + pairing_heap_(); + + pairing_heap_(const Cmp_Fn& r_cmp_fn); + + pairing_heap_(const PB_DS_CLASS_C_DEC& other); + + void + swap(PB_DS_CLASS_C_DEC& other); + + ~pairing_heap_(); + + inline point_iterator + push(const_reference r_val); + + void + modify(point_iterator it, const_reference r_new_val); + + inline const_reference + top() const; + + void + pop(); + + void + erase(point_iterator it); + + template<typename Pred> + size_type + erase_if(Pred pred); + + template<typename Pred> + void + split(Pred pred, PB_DS_CLASS_C_DEC& other); + + void + join(PB_DS_CLASS_C_DEC& other); + + protected: + + template<typename It> + void + copy_from_range(It first_it, It last_it); + +#ifdef _GLIBCXX_DEBUG + void + assert_valid() const; +#endif + + private: + + inline void + push_imp(node_pointer p_nd); + + node_pointer + join_node_children(node_pointer p_nd); + + node_pointer + forward_join(node_pointer p_nd, node_pointer p_next); + + node_pointer + back_join(node_pointer p_nd, node_pointer p_next); + + void + remove_node(node_pointer p_nd); + + }; + +#include <ext/pb_ds/detail/pairing_heap_/constructors_destructor_fn_imps.hpp> +#include <ext/pb_ds/detail/pairing_heap_/debug_fn_imps.hpp> +#include <ext/pb_ds/detail/pairing_heap_/find_fn_imps.hpp> +#include <ext/pb_ds/detail/pairing_heap_/insert_fn_imps.hpp> +#include <ext/pb_ds/detail/pairing_heap_/erase_fn_imps.hpp> +#include <ext/pb_ds/detail/pairing_heap_/split_join_fn_imps.hpp> + +#undef PB_DS_CLASS_C_DEC +#undef PB_DS_CLASS_T_DEC +#undef PB_DS_BASE_C_DEC + + } // namespace detail +} // namespace __gnu_pbds |