LTP GCOV extension - code coverage report
Current view: | directory - usr/include/c++/4.3/bits - stl_set.h
Test: | lcov.info
Date: | 2008-08-14 |  | Instrumented lines: | 33
Code covered: | 100.0 % |  | Executed lines: | 33

           1                 : // Set implementation -*- C++ -*-
           2                 :
           3                 : // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
           4                 : // Free Software Foundation, Inc.
           5                 : //
           6                 : // This file is part of the GNU ISO C++ Library.  This library is free
           7                 : // software; you can redistribute it and/or modify it under the
           8                 : // terms of the GNU General Public License as published by the
           9                 : // Free Software Foundation; either version 2, or (at your option)
          10                 : // any later version.
          11                 :
          12                 : // This library is distributed in the hope that it will be useful,
          13                 : // but WITHOUT ANY WARRANTY; without even the implied warranty of
          14                 : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
          15                 : // GNU General Public License for more details.
          16                 :
          17                 : // You should have received a copy of the GNU General Public License along
          18                 : // with this library; see the file COPYING.  If not, write to the Free
          19                 : // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
          20                 : // USA.
          21                 :
          22                 : // As a special exception, you may use this file as part of a free software
          23                 : // library without restriction.  Specifically, if other files instantiate
          24                 : // templates or use macros or inline functions from this file, or you compile
          25                 : // this file and link it with other files to produce an executable, this
          26                 : // file does not by itself cause the resulting executable to be covered by
          27                 : // the GNU General Public License.  This exception does not however
          28                 : // invalidate any other reasons why the executable file might be covered by
          29                 : // the GNU General Public License.
          30                 :
          31                 : /*
          32                 :  *
          33                 :  * Copyright (c) 1994
          34                 :  * Hewlett-Packard Company
          35                 :  *
          36                 :  * Permission to use, copy, modify, distribute and sell this software
          37                 :  * and its documentation for any purpose is hereby granted without fee,
          38                 :  * provided that the above copyright notice appear in all copies and
          39                 :  * that both that copyright notice and this permission notice appear
          40                 :  * in supporting documentation.  Hewlett-Packard Company makes no
          41                 :  * representations about the suitability of this software for any
          42                 :  * purpose.  It is provided "as is" without express or implied warranty.
          43                 :  *
          44                 :  *
          45                 :  * Copyright (c) 1996,1997
          46                 :  * Silicon Graphics Computer Systems, Inc.
          47                 :  *
          48                 :  * Permission to use, copy, modify, distribute and sell this software
          49                 :  * and its documentation for any purpose is hereby granted without fee,
          50                 :  * provided that the above copyright notice appear in all copies and
          51                 :  * that both that copyright notice and this permission notice appear
          52                 :  * in supporting documentation.  Silicon Graphics makes no
          53                 :  * representations about the suitability of this software for any
          54                 :  * purpose.  It is provided "as is" without express or implied warranty.
          55                 :  */
          56                 :
          57                 : /** @file stl_set.h
          58                 :  *  This is an internal header file, included by other library headers.
          59                 :  *  You should not attempt to use it directly.
          60                 :  */
          61                 :
          62                 : #ifndef _STL_SET_H
          63                 : #define _STL_SET_H 1
          64                 :
          65                 : #include <bits/concept_check.h>
          66                 :
          67                 : _GLIBCXX_BEGIN_NESTED_NAMESPACE(std, _GLIBCXX_STD_D)
          68                 :
          69                 :   /**
          70                 :    *  @brief A standard container made up of unique keys, which can be
          71                 :    *  retrieved in logarithmic time.
          72                 :    *
          73                 :    *  @ingroup Containers
          74                 :    *  @ingroup Assoc_containers
          75                 :    *
          76                 :    *  Meets the requirements of a <a href="tables.html#65">container</a>, a
          77                 :    *  <a href="tables.html#66">reversible container</a>, and an
          78                 :    *  <a href="tables.html#69">associative container</a> (using unique keys).
          79                 :    *
          80                 :    *  Sets support bidirectional iterators.
          81                 :    *
          82                 :    *  @param  Key  Type of key objects.
          83                 :    *  @param  Compare  Comparison function object type, defaults to less<Key>.
          84                 :    *  @param  Alloc  Allocator type, defaults to allocator<Key>.
          85                 :    *
          86                 :    *  The private tree data is declared exactly the same way for set and
          87                 :    *  multiset; the distinction is made entirely in how the tree functions are
          88                 :    *  called (*_unique versus *_equal, same as the standard).
          89                 :   */
          90                 :   template<typename _Key, typename _Compare = std::less<_Key>,
          91                 :            typename _Alloc = std::allocator<_Key> >
          92                 :     class set
          93         1308625 :     {
          94                 :       // concept requirements
          95                 :       typedef typename _Alloc::value_type                   _Alloc_value_type;
          96                 :       __glibcxx_class_requires(_Key, _SGIAssignableConcept)
          97                 :       __glibcxx_class_requires4(_Compare, bool, _Key, _Key,
          98                 :                                 _BinaryFunctionConcept)
          99                 :       __glibcxx_class_requires2(_Key, _Alloc_value_type, _SameTypeConcept)
         100                 :
         101                 :     public:
         102                 :       // typedefs:
         103                 :       //@{
         104                 :       /// Public typedefs.
         105                 :       typedef _Key     key_type;
         106                 :       typedef _Key     value_type;
         107                 :       typedef _Compare key_compare;
         108                 :       typedef _Compare value_compare;
         109                 :       typedef _Alloc   allocator_type;
         110                 :       //@}
         111                 :
         112                 :     private:
         113                 :       typedef typename _Alloc::template rebind<_Key>::other _Key_alloc_type;
         114                 :
         115                 :       typedef _Rb_tree<key_type, value_type, _Identity<value_type>,
         116                 :                        key_compare, _Key_alloc_type> _Rep_type;
         117                 :       _Rep_type _M_t;  // Red-black tree representing set.
         118                 :
         119                 :     public:
         120                 :       //@{
         121                 :       ///  Iterator-related typedefs.
         122                 :       typedef typename _Key_alloc_type::pointer             pointer;
         123                 :       typedef typename _Key_alloc_type::const_pointer       const_pointer;
         124                 :       typedef typename _Key_alloc_type::reference           reference;
         125                 :       typedef typename _Key_alloc_type::const_reference     const_reference;
         126                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
         127                 :       // DR 103. set::iterator is required to be modifiable,
         128                 :       // but this allows modification of keys.
         129                 :       typedef typename _Rep_type::const_iterator            iterator;
         130                 :       typedef typename _Rep_type::const_iterator            const_iterator;
         131                 :       typedef typename _Rep_type::const_reverse_iterator    reverse_iterator;
         132                 :       typedef typename _Rep_type::const_reverse_iterator    const_reverse_iterator;
         133                 :       typedef typename _Rep_type::size_type                 size_type;
         134                 :       typedef typename _Rep_type::difference_type           difference_type;
         135                 :       //@}
         136                 :
         137                 :       // allocation/deallocation
         138                 :       /**
         139                 :        *  @brief  Default constructor creates no elements.
         140                 :        */
         141          277740 :       set()
         142          277740 :       : _M_t() { }
         143                 :
         144                 :       /**
         145                 :        *  @brief  Creates a %set with no elements.
         146                 :        *  @param  comp  Comparator to use.
         147                 :        *  @param  a  An allocator object.
         148                 :        */
         149                 :       explicit
         150                 :       set(const _Compare& __comp,
         151                 :           const allocator_type& __a = allocator_type())
         152                 :       : _M_t(__comp, __a) { }
         153                 :
         154                 :       /**
         155                 :        *  @brief  Builds a %set from a range.
         156                 :        *  @param  first  An input iterator.
         157                 :        *  @param  last  An input iterator.
         158                 :        *
         159                 :        *  Create a %set consisting of copies of the elements from [first,last).
         160                 :        *  This is linear in N if the range is already sorted, and NlogN
         161                 :        *  otherwise (where N is distance(first,last)).
         162                 :        */
         163                 :       template<typename _InputIterator>
         164                 :         set(_InputIterator __first, _InputIterator __last)
         165                 :         : _M_t()
         166                 :         { _M_t._M_insert_unique(__first, __last); }
         167                 :
         168                 :       /**
         169                 :        *  @brief  Builds a %set from a range.
         170                 :        *  @param  first  An input iterator.
         171                 :        *  @param  last  An input iterator.
         172                 :        *  @param  comp  A comparison functor.
         173                 :        *  @param  a  An allocator object.
         174                 :        *
         175                 :        *  Create a %set consisting of copies of the elements from [first,last).
         176                 :        *  This is linear in N if the range is already sorted, and NlogN
         177                 :        *  otherwise (where N is distance(first,last)).
         178                 :        */
         179                 :       template<typename _InputIterator>
         180                 :         set(_InputIterator __first, _InputIterator __last,
         181                 :             const _Compare& __comp,
         182                 :             const allocator_type& __a = allocator_type())
         183                 :         : _M_t(__comp, __a)
         184                 :         { _M_t._M_insert_unique(__first, __last); }
         185                 :
         186                 :       /**
         187                 :        *  @brief  %Set copy constructor.
         188                 :        *  @param  x  A %set of identical element and allocator types.
         189                 :        *
         190                 :        *  The newly-created %set uses a copy of the allocation object used
         191                 :        *  by @a x.
         192                 :        */
         193          925151 :       set(const set& __x)
         194          925151 :       : _M_t(__x._M_t) { }
         195                 :
         196                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
         197                 :      /**
         198                 :        *  @brief %Set move constructor
         199                 :        *  @param x  A %set of identical element and allocator types.
         200                 :        *
         201                 :        *  The newly-created %set contains the exact contents of @a x.
         202                 :        *  The contents of @a x are a valid, but unspecified %set.
         203                 :        */
         204                 :       set(set&& __x)
         205                 :       : _M_t(std::forward<_Rep_type>(__x._M_t)) { }
         206                 : #endif
         207                 :
         208                 :       /**
         209                 :        *  @brief  %Set assignment operator.
         210                 :        *  @param  x  A %set of identical element and allocator types.
         211                 :        *
         212                 :        *  All the elements of @a x are copied, but unlike the copy constructor,
         213                 :        *  the allocator object is not copied.
         214                 :        */
         215                 :       set&
         216              80 :       operator=(const set& __x)
         217                 :       {
         218              80 :         _M_t = __x._M_t;
         219              80 :         return *this;
         220                 :       }
         221                 :
         222                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
         223                 :       /**
         224                 :        *  @brief %Set move assignment operator.
         225                 :        *  @param x  A %set of identical element and allocator types.
         226                 :        *
         227                 :        *  The contents of @a x are moved into this %set (without copying).
         228                 :        *  @a x is a valid, but unspecified %set.
         229                 :        */
         230                 :       set&
         231                 :       operator=(set&& __x)
         232                 :       {
         233                 :         // NB: DR 675.
         234                 :         this->clear();
         235                 :         this->swap(__x);
         236                 :         return *this;
         237                 :       }
         238                 : #endif
         239                 :
         240                 :       // accessors:
         241                 :
         242                 :       ///  Returns the comparison object with which the %set was constructed.
         243                 :       key_compare
         244                 :       key_comp() const
         245                 :       { return _M_t.key_comp(); }
         246                 :       ///  Returns the comparison object with which the %set was constructed.
         247                 :       value_compare
         248                 :       value_comp() const
         249                 :       { return _M_t.key_comp(); }
         250                 :       ///  Returns the allocator object with which the %set was constructed.
         251                 :       allocator_type
         252                 :       get_allocator() const
         253                 :       { return _M_t.get_allocator(); }
         254                 :
         255                 :       /**
         256                 :        *  Returns a read-only (constant) iterator that points to the first
         257                 :        *  element in the %set.  Iteration is done in ascending order according
         258                 :        *  to the keys.
         259                 :        */
         260                 :       iterator
         261          468023 :       begin() const
         262          468023 :       { return _M_t.begin(); }
         263                 :
         264                 :       /**
         265                 :        *  Returns a read-only (constant) iterator that points one past the last
         266                 :        *  element in the %set.  Iteration is done in ascending order according
         267                 :        *  to the keys.
         268                 :        */
         269                 :       iterator
         270         1576796 :       end() const
         271         1576796 :       { return _M_t.end(); }
         272                 :
         273                 :       /**
         274                 :        *  Returns a read-only (constant) iterator that points to the last
         275                 :        *  element in the %set.  Iteration is done in descending order according
         276                 :        *  to the keys.
         277                 :        */
         278                 :       reverse_iterator
         279                 :       rbegin() const
         280                 :       { return _M_t.rbegin(); }
         281                 :
         282                 :       /**
         283                 :        *  Returns a read-only (constant) reverse iterator that points to the
         284                 :        *  last pair in the %set.  Iteration is done in descending order
         285                 :        *  according to the keys.
         286                 :        */
         287                 :       reverse_iterator
         288                 :       rend() const
         289                 :       { return _M_t.rend(); }
         290                 :
         291                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
         292                 :       /**
         293                 :        *  Returns a read-only (constant) iterator that points to the first
         294                 :        *  element in the %set.  Iteration is done in ascending order according
         295                 :        *  to the keys.
         296                 :        */
         297                 :       iterator
         298                 :       cbegin() const
         299                 :       { return _M_t.begin(); }
         300                 :
         301                 :       /**
         302                 :        *  Returns a read-only (constant) iterator that points one past the last
         303                 :        *  element in the %set.  Iteration is done in ascending order according
         304                 :        *  to the keys.
         305                 :        */
         306                 :       iterator
         307                 :       cend() const
         308                 :       { return _M_t.end(); }
         309                 :
         310                 :       /**
         311                 :        *  Returns a read-only (constant) iterator that points to the last
         312                 :        *  element in the %set.  Iteration is done in descending order according
         313                 :        *  to the keys.
         314                 :        */
         315                 :       reverse_iterator
         316                 :       crbegin() const
         317                 :       { return _M_t.rbegin(); }
         318                 :
         319                 :       /**
         320                 :        *  Returns a read-only (constant) reverse iterator that points to the
         321                 :        *  last pair in the %set.  Iteration is done in descending order
         322                 :        *  according to the keys.
         323                 :        */
         324                 :       reverse_iterator
         325                 :       crend() const
         326                 :       { return _M_t.rend(); }
         327                 : #endif
         328                 :
         329                 :       ///  Returns true if the %set is empty.
         330                 :       bool
         331          338386 :       empty() const
         332          338386 :       { return _M_t.empty(); }
         333                 :
         334                 :       ///  Returns the size of the %set.
         335                 :       size_type
         336           84631 :       size() const
         337           84631 :       { return _M_t.size(); }
         338                 :
         339                 :       ///  Returns the maximum size of the %set.
         340                 :       size_type
         341                 :       max_size() const
         342                 :       { return _M_t.max_size(); }
         343                 :
         344                 :       /**
         345                 :        *  @brief  Swaps data with another %set.
         346                 :        *  @param  x  A %set of the same element and allocator types.
         347                 :        *
         348                 :        *  This exchanges the elements between two sets in constant time.
         349                 :        *  (It is only swapping a pointer, an integer, and an instance of
         350                 :        *  the @c Compare type (which itself is often stateless and empty), so it
         351                 :        *  should be quite fast.)
         352                 :        *  Note that the global std::swap() function is specialized such that
         353                 :        *  std::swap(s1,s2) will feed to this function.
         354                 :        */
         355                 :       void
         356                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
         357                 :       swap(set&& __x)
         358                 : #else
         359                 :       swap(set& __x)
         360                 : #endif
         361                 :       { _M_t.swap(__x._M_t); }
         362                 :
         363                 :       // insert/erase
         364                 :       /**
         365                 :        *  @brief Attempts to insert an element into the %set.
         366                 :        *  @param  x  Element to be inserted.
         367                 :        *  @return  A pair, of which the first element is an iterator that points
         368                 :        *           to the possibly inserted element, and the second is a bool
         369                 :        *           that is true if the element was actually inserted.
         370                 :        *
         371                 :        *  This function attempts to insert an element into the %set.  A %set
         372                 :        *  relies on unique keys and thus an element is only inserted if it is
         373                 :        *  not already present in the %set.
         374                 :        *
         375                 :        *  Insertion requires logarithmic time.
         376                 :        */
         377                 :       std::pair<iterator, bool>
         378         1422360 :       insert(const value_type& __x)
         379                 :       {
         380                 :         std::pair<typename _Rep_type::iterator, bool> __p =
         381         1422360 :           _M_t._M_insert_unique(__x);
         382         1422360 :         return std::pair<iterator, bool>(__p.first, __p.second);
         383                 :       }
         384                 :
         385                 :       /**
         386                 :        *  @brief Attempts to insert an element into the %set.
         387                 :        *  @param  position  An iterator that serves as a hint as to where the
         388                 :        *                    element should be inserted.
         389                 :        *  @param  x  Element to be inserted.
         390                 :        *  @return  An iterator that points to the element with key of @a x (may
         391                 :        *           or may not be the element passed in).
         392                 :        *
         393                 :        *  This function is not concerned about whether the insertion took place,
         394                 :        *  and thus does not return a boolean like the single-argument insert()
         395                 :        *  does.  Note that the first parameter is only a hint and can
         396                 :        *  potentially improve the performance of the insertion process.  A bad
         397                 :        *  hint would cause no gains in efficiency.
         398                 :        *
         399                 :        *  See http://gcc.gnu.org/onlinedocs/libstdc++/23_containers/howto.html#4
         400                 :        *  for more on "hinting".
         401                 :        *
         402                 :        *  Insertion requires logarithmic time (if the hint is not taken).
         403                 :        */
         404                 :       iterator
         405          107613 :       insert(iterator __position, const value_type& __x)
         406          107613 :       { return _M_t._M_insert_unique_(__position, __x); }
         407                 :
         408                 :       /**
         409                 :        *  @brief A template function that attempts to insert a range of elements.
         410                 :        *  @param  first  Iterator pointing to the start of the range to be
         411                 :        *                 inserted.
         412                 :        *  @param  last  Iterator pointing to the end of the range.
         413                 :        *
         414                 :        *  Complexity similar to that of the range constructor.
         415                 :        */
         416                 :       template<typename _InputIterator>
         417                 :         void
         418                 :         insert(_InputIterator __first, _InputIterator __last)
         419                 :         { _M_t._M_insert_unique(__first, __last); }
         420                 :
         421                 :       /**
         422                 :        *  @brief Erases an element from a %set.
         423                 :        *  @param  position  An iterator pointing to the element to be erased.
         424                 :        *
         425                 :        *  This function erases an element, pointed to by the given iterator,
         426                 :        *  from a %set.  Note that this function only erases the element, and
         427                 :        *  that if the element is itself a pointer, the pointed-to memory is not
         428                 :        *  touched in any way.  Managing the pointer is the user's responsibility.
         429                 :        */
         430                 :       void
         431             129 :       erase(iterator __position)
         432             129 :       { _M_t.erase(__position); }
         433                 :
         434                 :       /**
         435                 :        *  @brief Erases elements according to the provided key.
         436                 :        *  @param  x  Key of element to be erased.
         437                 :        *  @return  The number of elements erased.
         438                 :        *
         439                 :        *  This function erases all the elements located by the given key from
         440                 :        *  a %set.
         441                 :        *  Note that this function only erases the element, and that if
         442                 :        *  the element is itself a pointer, the pointed-to memory is not touched
         443                 :        *  in any way.  Managing the pointer is the user's responsibility.
         444                 :        */
         445                 :       size_type
         446               9 :       erase(const key_type& __x)
         447               9 :       { return _M_t.erase(__x); }
         448                 :
         449                 :       /**
         450                 :        *  @brief Erases a [first,last) range of elements from a %set.
         451                 :        *  @param  first  Iterator pointing to the start of the range to be
         452                 :        *                 erased.
         453                 :        *  @param  last  Iterator pointing to the end of the range to be erased.
         454                 :        *
         455                 :        *  This function erases a sequence of elements from a %set.
         456                 :        *  Note that this function only erases the element, and that if
         457                 :        *  the element is itself a pointer, the pointed-to memory is not touched
         458                 :        *  in any way.  Managing the pointer is the user's responsibility.
         459                 :        */
         460                 :       void
         461                 :       erase(iterator __first, iterator __last)
         462                 :       { _M_t.erase(__first, __last); }
         463                 :
         464                 :       /**
         465                 :        *  Erases all elements in a %set.  Note that this function only erases
         466                 :        *  the elements, and that if the elements themselves are pointers, the
         467                 :        *  pointed-to memory is not touched in any way.  Managing the pointer is
         468                 :        *  the user's responsibility.
         469                 :        */
         470                 :       void
         471           84600 :       clear()
         472           84600 :       { _M_t.clear(); }
         473                 :
         474                 :       // set operations:
         475                 :
         476                 :       /**
         477                 :        *  @brief  Finds the number of elements.
         478                 :        *  @param  x  Element to located.
         479                 :        *  @return  Number of elements with specified key.
         480                 :        *
         481                 :        *  This function only makes sense for multisets; for set the result will
         482                 :        *  either be 0 (not present) or 1 (present).
         483                 :        */
         484                 :       size_type
         485                 :       count(const key_type& __x) const
         486                 :       { return _M_t.find(__x) == _M_t.end() ? 0 : 1; }
         487                 :
         488                 :       // _GLIBCXX_RESOLVE_LIB_DEFECTS
         489                 :       // 214.  set::find() missing const overload
         490                 :       //@{
         491                 :       /**
         492                 :        *  @brief Tries to locate an element in a %set.
         493                 :        *  @param  x  Element to be located.
         494                 :        *  @return  Iterator pointing to sought-after element, or end() if not
         495                 :        *           found.
         496                 :        *
         497                 :        *  This function takes a key and tries to locate the element with which
         498                 :        *  the key matches.  If successful the function returns an iterator
         499                 :        *  pointing to the sought after element.  If unsuccessful it returns the
         500                 :        *  past-the-end ( @c end() ) iterator.
         501                 :        */
         502                 :       iterator
         503              39 :       find(const key_type& __x)
         504              39 :       { return _M_t.find(__x); }
         505                 :
         506                 :       const_iterator
         507              16 :       find(const key_type& __x) const
         508              16 :       { return _M_t.find(__x); }
         509                 :       //@}
         510                 :
         511                 :       //@{
         512                 :       /**
         513                 :        *  @brief Finds the beginning of a subsequence matching given key.
         514                 :        *  @param  x  Key to be located.
         515                 :        *  @return  Iterator pointing to first element equal to or greater
         516                 :        *           than key, or end().
         517                 :        *
         518                 :        *  This function returns the first element of a subsequence of elements
         519                 :        *  that matches the given key.  If unsuccessful it returns an iterator
         520                 :        *  pointing to the first element that has a greater value than given key
         521                 :        *  or end() if no such element exists.
         522                 :        */
         523                 :       iterator
         524                 :       lower_bound(const key_type& __x)
         525                 :       { return _M_t.lower_bound(__x); }
         526                 :
         527                 :       const_iterator
         528                 :       lower_bound(const key_type& __x) const
         529                 :       { return _M_t.lower_bound(__x); }
         530                 :       //@}
         531                 :
         532                 :       //@{
         533                 :       /**
         534                 :        *  @brief Finds the end of a subsequence matching given key.
         535                 :        *  @param  x  Key to be located.
         536                 :        *  @return Iterator pointing to the first element
         537                 :        *          greater than key, or end().
         538                 :        */
         539                 :       iterator
         540                 :       upper_bound(const key_type& __x)
         541                 :       { return _M_t.upper_bound(__x); }
         542                 :
         543                 :       const_iterator
         544                 :       upper_bound(const key_type& __x) const
         545                 :       { return _M_t.upper_bound(__x); }
         546                 :       //@}
         547                 :
         548                 :       //@{
         549                 :       /**
         550                 :        *  @brief Finds a subsequence matching given key.
         551                 :        *  @param  x  Key to be located.
         552                 :        *  @return  Pair of iterators that possibly points to the subsequence
         553                 :        *           matching given key.
         554                 :        *
         555                 :        *  This function is equivalent to
         556                 :        *  @code
         557                 :        *    std::make_pair(c.lower_bound(val),
         558                 :        *                   c.upper_bound(val))
         559                 :        *  @endcode
         560                 :        *  (but is faster than making the calls separately).
         561                 :        *
         562                 :        *  This function probably only makes sense for multisets.
         563                 :        */
         564                 :       std::pair<iterator, iterator>
         565                 :       equal_range(const key_type& __x)
         566                 :       { return _M_t.equal_range(__x); }
         567                 :
         568                 :       std::pair<const_iterator, const_iterator>
         569                 :       equal_range(const key_type& __x) const
         570                 :       { return _M_t.equal_range(__x); }
         571                 :       //@}
         572                 :
         573                 :       template<typename _K1, typename _C1, typename _A1>
         574                 :         friend bool
         575                 :         operator==(const set<_K1, _C1, _A1>&, const set<_K1, _C1, _A1>&);
         576                 :
         577                 :       template<typename _K1, typename _C1, typename _A1>
         578                 :         friend bool
         579                 :         operator<(const set<_K1, _C1, _A1>&, const set<_K1, _C1, _A1>&);
         580                 :     };
         581                 :
         582                 :
         583                 :   /**
         584                 :    *  @brief  Set equality comparison.
         585                 :    *  @param  x  A %set.
         586                 :    *  @param  y  A %set of the same type as @a x.
         587                 :    *  @return  True iff the size and elements of the sets are equal.
         588                 :    *
         589                 :    *  This is an equivalence relation.  It is linear in the size of the sets.
         590                 :    *  Sets are considered equivalent if their sizes are equal, and if
         591                 :    *  corresponding elements compare equal.
         592                 :   */
         593                 :   template<typename _Key, typename _Compare, typename _Alloc>
         594                 :     inline bool
         595                 :     operator==(const set<_Key, _Compare, _Alloc>& __x,
         596               4 :                const set<_Key, _Compare, _Alloc>& __y)
         597               4 :     { return __x._M_t == __y._M_t; }
         598                 :
         599                 :   /**
         600                 :    *  @brief  Set ordering relation.
         601                 :    *  @param  x  A %set.
         602                 :    *  @param  y  A %set of the same type as @a x.
         603                 :    *  @return  True iff @a x is lexicographically less than @a y.
         604                 :    *
         605                 :    *  This is a total ordering relation.  It is linear in the size of the
         606                 :    *  maps.  The elements must be comparable with @c <.
         607                 :    *
         608                 :    *  See std::lexicographical_compare() for how the determination is made.
         609                 :   */
         610                 :   template<typename _Key, typename _Compare, typename _Alloc>
         611                 :     inline bool
         612                 :     operator<(const set<_Key, _Compare, _Alloc>& __x,
         613                 :               const set<_Key, _Compare, _Alloc>& __y)
         614                 :     { return __x._M_t < __y._M_t; }
         615                 :
         616                 :   ///  Returns !(x == y).
         617                 :   template<typename _Key, typename _Compare, typename _Alloc>
         618                 :     inline bool
         619                 :     operator!=(const set<_Key, _Compare, _Alloc>& __x,
         620                 :                const set<_Key, _Compare, _Alloc>& __y)
         621                 :     { return !(__x == __y); }
         622                 :
         623                 :   ///  Returns y < x.
         624                 :   template<typename _Key, typename _Compare, typename _Alloc>
         625                 :     inline bool
         626                 :     operator>(const set<_Key, _Compare, _Alloc>& __x,
         627                 :               const set<_Key, _Compare, _Alloc>& __y)
         628                 :     { return __y < __x; }
         629                 :
         630                 :   ///  Returns !(y < x)
         631                 :   template<typename _Key, typename _Compare, typename _Alloc>
         632                 :     inline bool
         633                 :     operator<=(const set<_Key, _Compare, _Alloc>& __x,
         634                 :                const set<_Key, _Compare, _Alloc>& __y)
         635                 :     { return !(__y < __x); }
         636                 :
         637                 :   ///  Returns !(x < y)
         638                 :   template<typename _Key, typename _Compare, typename _Alloc>
         639                 :     inline bool
         640                 :     operator>=(const set<_Key, _Compare, _Alloc>& __x,
         641                 :                const set<_Key, _Compare, _Alloc>& __y)
         642                 :     { return !(__x < __y); }
         643                 :
         644                 :   /// See std::set::swap().
         645                 :   template<typename _Key, typename _Compare, typename _Alloc>
         646                 :     inline void
         647                 :     swap(set<_Key, _Compare, _Alloc>& __x, set<_Key, _Compare, _Alloc>& __y)
         648                 :     { __x.swap(__y); }
         649                 :
         650                 : #ifdef __GXX_EXPERIMENTAL_CXX0X__
         651                 :   template<typename _Key, typename _Compare, typename _Alloc>
         652                 :     inline void
         653                 :     swap(set<_Key, _Compare, _Alloc>&& __x, set<_Key, _Compare, _Alloc>& __y)
         654                 :     { __x.swap(__y); }
         655                 :
         656                 :   template<typename _Key, typename _Compare, typename _Alloc>
         657                 :     inline void
         658                 :     swap(set<_Key, _Compare, _Alloc>& __x, set<_Key, _Compare, _Alloc>&& __y)
         659                 :     { __x.swap(__y); }
         660                 : #endif
         661                 :
         662                 : _GLIBCXX_END_NESTED_NAMESPACE
         663                 :
         664                 : #endif /* _STL_SET_H */

Generated by: LTP GCOV extension version 1.6