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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/tr1/unordered_set.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/tr1/unordered_set.h
new file mode 100644
index 0000000..e65a4cc
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/tr1/unordered_set.h
@@ -0,0 +1,267 @@
+// TR1 unordered_set implementation -*- C++ -*-
+
+// Copyright (C) 2010 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/>.
+
+/** @file tr1/unordered_set.h
+ *  This is an internal header file, included by other library headers.
+ *  Do not attempt to use it directly. @headername{tr1/unordered_set}
+ */
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+namespace tr1
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  // NB: When we get typedef templates these class definitions
+  // will be unnecessary.
+  template<class _Value,
+	   class _Hash = hash<_Value>,
+	   class _Pred = std::equal_to<_Value>,
+	   class _Alloc = std::allocator<_Value>,
+	   bool __cache_hash_code = false>
+    class __unordered_set
+    : public _Hashtable<_Value, _Value, _Alloc,
+			std::_Identity<_Value>, _Pred,
+			_Hash, __detail::_Mod_range_hashing,
+			__detail::_Default_ranged_hash,
+			__detail::_Prime_rehash_policy,
+			__cache_hash_code, true, true>
+    {
+      typedef _Hashtable<_Value, _Value, _Alloc,
+			 std::_Identity<_Value>, _Pred,
+			 _Hash, __detail::_Mod_range_hashing,
+			 __detail::_Default_ranged_hash,
+			 __detail::_Prime_rehash_policy,
+			 __cache_hash_code, true, true>
+	_Base;
+
+    public:
+      typedef typename _Base::size_type       size_type;
+      typedef typename _Base::hasher          hasher;
+      typedef typename _Base::key_equal       key_equal;
+      typedef typename _Base::allocator_type  allocator_type;
+
+      explicit
+      __unordered_set(size_type __n = 10,
+		      const hasher& __hf = hasher(),
+		      const key_equal& __eql = key_equal(),
+		      const allocator_type& __a = allocator_type())
+      : _Base(__n, __hf, __detail::_Mod_range_hashing(),
+	      __detail::_Default_ranged_hash(), __eql,
+	      std::_Identity<_Value>(), __a)
+      { }
+
+      template<typename _InputIterator>
+	__unordered_set(_InputIterator __f, _InputIterator __l,
+			size_type __n = 10,
+			const hasher& __hf = hasher(),
+			const key_equal& __eql = key_equal(),
+			const allocator_type& __a = allocator_type())
+	: _Base(__f, __l, __n, __hf, __detail::_Mod_range_hashing(),
+		__detail::_Default_ranged_hash(), __eql,
+		std::_Identity<_Value>(), __a)
+	{ }
+    };
+
+  template<class _Value,
+	   class _Hash = hash<_Value>,
+	   class _Pred = std::equal_to<_Value>,
+	   class _Alloc = std::allocator<_Value>,
+	   bool __cache_hash_code = false>
+    class __unordered_multiset
+    : public _Hashtable<_Value, _Value, _Alloc,
+			std::_Identity<_Value>, _Pred,
+			_Hash, __detail::_Mod_range_hashing,
+			__detail::_Default_ranged_hash,
+			__detail::_Prime_rehash_policy,
+			__cache_hash_code, true, false>
+    {
+      typedef _Hashtable<_Value, _Value, _Alloc,
+			 std::_Identity<_Value>, _Pred,
+			 _Hash, __detail::_Mod_range_hashing,
+			 __detail::_Default_ranged_hash,
+			 __detail::_Prime_rehash_policy,
+			 __cache_hash_code, true, false>
+	_Base;
+
+    public:
+      typedef typename _Base::size_type       size_type;
+      typedef typename _Base::hasher          hasher;
+      typedef typename _Base::key_equal       key_equal;
+      typedef typename _Base::allocator_type  allocator_type;
+
+      explicit
+      __unordered_multiset(size_type __n = 10,
+			   const hasher& __hf = hasher(),
+			   const key_equal& __eql = key_equal(),
+			   const allocator_type& __a = allocator_type())
+      : _Base(__n, __hf, __detail::_Mod_range_hashing(),
+	      __detail::_Default_ranged_hash(), __eql,
+	      std::_Identity<_Value>(), __a)
+      { }
+
+
+      template<typename _InputIterator>
+	__unordered_multiset(_InputIterator __f, _InputIterator __l,
+			     typename _Base::size_type __n = 0,
+			     const hasher& __hf = hasher(),
+			     const key_equal& __eql = key_equal(),
+			     const allocator_type& __a = allocator_type())
+	: _Base(__f, __l, __n, __hf, __detail::_Mod_range_hashing(),
+		__detail::_Default_ranged_hash(), __eql,
+		std::_Identity<_Value>(), __a)
+	{ }
+    };
+
+  template<class _Value, class _Hash, class _Pred, class _Alloc,
+	   bool __cache_hash_code>
+    inline void
+    swap(__unordered_set<_Value, _Hash, _Pred, _Alloc, __cache_hash_code>& __x,
+	 __unordered_set<_Value, _Hash, _Pred, _Alloc, __cache_hash_code>& __y)
+    { __x.swap(__y); }
+
+  template<class _Value, class _Hash, class _Pred, class _Alloc,
+	   bool __cache_hash_code>
+    inline void
+    swap(__unordered_multiset<_Value, _Hash, _Pred,
+	 _Alloc, __cache_hash_code>& __x,
+	 __unordered_multiset<_Value, _Hash, _Pred,
+	 _Alloc, __cache_hash_code>& __y)
+    { __x.swap(__y); }
+
+
+  /**
+   *  @brief A standard container composed of unique keys (containing
+   *  at most one of each key value) in which the elements' keys are
+   *  the elements themselves.
+   *
+   *  @ingroup unordered_associative_containers
+   *
+   *  Meets the requirements of a <a href="tables.html#65">container</a>, and
+   *  <a href="tables.html#xx">unordered associative container</a>
+   *
+   *  @param  Value  Type of key objects.
+   *  @param  Hash  Hashing function object type, defaults to hash<Value>.
+   *  @param  Pred  Predicate function object type, defaults to equal_to<Value>.
+   *  @param  Alloc  Allocator type, defaults to allocator<Key>.
+   */
+  template<class _Value,
+	   class _Hash = hash<_Value>,
+	   class _Pred = std::equal_to<_Value>,
+	   class _Alloc = std::allocator<_Value> >
+    class unordered_set
+    : public __unordered_set<_Value, _Hash, _Pred, _Alloc>
+    {
+      typedef __unordered_set<_Value, _Hash, _Pred, _Alloc>  _Base;
+
+    public:
+      typedef typename _Base::value_type      value_type;
+      typedef typename _Base::size_type       size_type;
+      typedef typename _Base::hasher          hasher;
+      typedef typename _Base::key_equal       key_equal;
+      typedef typename _Base::allocator_type  allocator_type;
+
+      explicit
+      unordered_set(size_type __n = 10,
+		    const hasher& __hf = hasher(),
+		    const key_equal& __eql = key_equal(),
+		    const allocator_type& __a = allocator_type())
+      : _Base(__n, __hf, __eql, __a)
+      { }
+
+      template<typename _InputIterator>
+	unordered_set(_InputIterator __f, _InputIterator __l,
+		      size_type __n = 10,
+		      const hasher& __hf = hasher(),
+		      const key_equal& __eql = key_equal(),
+		      const allocator_type& __a = allocator_type())
+	: _Base(__f, __l, __n, __hf, __eql, __a)
+	{ }
+    };
+
+  /**
+   *  @brief A standard container composed of equivalent keys
+   *  (possibly containing multiple of each key value) in which the
+   *  elements' keys are the elements themselves.
+   *
+   *  @ingroup unordered_associative_containers
+   *
+   *  Meets the requirements of a <a href="tables.html#65">container</a>, and
+   *  <a href="tables.html#xx">unordered associative container</a>
+   *
+   *  @param  Value  Type of key objects.
+   *  @param  Hash  Hashing function object type, defaults to hash<Value>.
+   *  @param  Pred  Predicate function object type, defaults to equal_to<Value>.
+   *  @param  Alloc  Allocator type, defaults to allocator<Key>.
+   */
+  template<class _Value,
+	   class _Hash = hash<_Value>,
+	   class _Pred = std::equal_to<_Value>,
+	   class _Alloc = std::allocator<_Value> >
+    class unordered_multiset
+    : public __unordered_multiset<_Value, _Hash, _Pred, _Alloc>
+    {
+      typedef __unordered_multiset<_Value, _Hash, _Pred, _Alloc>  _Base;
+
+    public:
+      typedef typename _Base::value_type      value_type;
+      typedef typename _Base::size_type       size_type;
+      typedef typename _Base::hasher          hasher;
+      typedef typename _Base::key_equal       key_equal;
+      typedef typename _Base::allocator_type  allocator_type;
+
+      explicit
+      unordered_multiset(size_type __n = 10,
+			 const hasher& __hf = hasher(),
+			 const key_equal& __eql = key_equal(),
+			 const allocator_type& __a = allocator_type())
+      : _Base(__n, __hf, __eql, __a)
+      { }
+
+
+      template<typename _InputIterator>
+	unordered_multiset(_InputIterator __f, _InputIterator __l,
+			   typename _Base::size_type __n = 0,
+			   const hasher& __hf = hasher(),
+			   const key_equal& __eql = key_equal(),
+			   const allocator_type& __a = allocator_type())
+	: _Base(__f, __l, __n, __hf, __eql, __a)
+	{ }
+    };
+
+  template<class _Value, class _Hash, class _Pred, class _Alloc>
+    inline void
+    swap(unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
+	 unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
+    { __x.swap(__y); }
+
+  template<class _Value, class _Hash, class _Pred, class _Alloc>
+    inline void
+    swap(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
+	 unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
+    { __x.swap(__y); }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+}
+}