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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/bits/gslice_array.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/bits/gslice_array.h
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+// The template and inlines for the -*- C++ -*- gslice_array class.
+
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004, 2005, 2009, 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 bits/gslice_array.h
+ *  This is an internal header file, included by other library headers.
+ *  Do not attempt to use it directly. @headername{valarray}
+ */
+
+// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
+
+#ifndef _GSLICE_ARRAY_H
+#define _GSLICE_ARRAY_H 1
+
+#pragma GCC system_header
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  /**
+   * @addtogroup numeric_arrays
+   * @{
+   */
+
+  /**
+   *  @brief  Reference to multi-dimensional subset of an array.
+   *
+   *  A gslice_array is a reference to the actual elements of an array
+   *  specified by a gslice.  The way to get a gslice_array is to call
+   *  operator[](gslice) on a valarray.  The returned gslice_array then
+   *  permits carrying operations out on the referenced subset of elements in
+   *  the original valarray.  For example, operator+=(valarray) will add
+   *  values to the subset of elements in the underlying valarray this
+   *  gslice_array refers to.
+   *
+   *  @param  Tp  Element type.
+   */
+  template<typename _Tp>
+    class gslice_array
+    {
+    public:
+      typedef _Tp value_type;
+
+      // _GLIBCXX_RESOLVE_LIB_DEFECTS
+      // 253. valarray helper functions are almost entirely useless
+
+      ///  Copy constructor.  Both slices refer to the same underlying array.
+      gslice_array(const gslice_array&);
+
+      ///  Assignment operator.  Assigns slice elements to corresponding
+      ///  elements of @a a.
+      gslice_array& operator=(const gslice_array&);
+
+      ///  Assign slice elements to corresponding elements of @a v.
+      void operator=(const valarray<_Tp>&) const;
+      ///  Multiply slice elements by corresponding elements of @a v.
+      void operator*=(const valarray<_Tp>&) const;
+      ///  Divide slice elements by corresponding elements of @a v.
+      void operator/=(const valarray<_Tp>&) const;
+      ///  Modulo slice elements by corresponding elements of @a v.
+      void operator%=(const valarray<_Tp>&) const;
+      ///  Add corresponding elements of @a v to slice elements.
+      void operator+=(const valarray<_Tp>&) const;
+      ///  Subtract corresponding elements of @a v from slice elements.
+      void operator-=(const valarray<_Tp>&) const;
+      ///  Logical xor slice elements with corresponding elements of @a v.
+      void operator^=(const valarray<_Tp>&) const;
+      ///  Logical and slice elements with corresponding elements of @a v.
+      void operator&=(const valarray<_Tp>&) const;
+      ///  Logical or slice elements with corresponding elements of @a v.
+      void operator|=(const valarray<_Tp>&) const;
+      ///  Left shift slice elements by corresponding elements of @a v.
+      void operator<<=(const valarray<_Tp>&) const;
+      ///  Right shift slice elements by corresponding elements of @a v.
+      void operator>>=(const valarray<_Tp>&) const;
+      ///  Assign all slice elements to @a t.
+      void operator=(const _Tp&) const;
+
+      template<class _Dom>
+        void operator=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator*=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator/=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator%=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator+=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator-=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator^=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator&=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator|=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator<<=(const _Expr<_Dom, _Tp>&) const;
+      template<class _Dom>
+        void operator>>=(const _Expr<_Dom, _Tp>&) const;
+
+    private:
+      _Array<_Tp>    _M_array;
+      const valarray<size_t>& _M_index;
+
+      friend class valarray<_Tp>;
+
+      gslice_array(_Array<_Tp>, const valarray<size_t>&);
+
+      // not implemented
+      gslice_array();
+    };
+
+  template<typename _Tp>
+    inline
+    gslice_array<_Tp>::gslice_array(_Array<_Tp> __a,
+				    const valarray<size_t>& __i)
+    : _M_array(__a), _M_index(__i) {}
+
+  template<typename _Tp>
+    inline
+    gslice_array<_Tp>::gslice_array(const gslice_array<_Tp>& __a)
+    : _M_array(__a._M_array), _M_index(__a._M_index) {}
+
+  template<typename _Tp>
+    inline gslice_array<_Tp>&
+    gslice_array<_Tp>::operator=(const gslice_array<_Tp>& __a)
+    {
+      std::__valarray_copy(_Array<_Tp>(__a._M_array),
+			   _Array<size_t>(__a._M_index), _M_index.size(),
+			   _M_array, _Array<size_t>(_M_index));
+      return *this;
+    }
+
+  template<typename _Tp>
+    inline void
+    gslice_array<_Tp>::operator=(const _Tp& __t) const
+    {
+      std::__valarray_fill(_M_array, _Array<size_t>(_M_index),
+			   _M_index.size(), __t);
+    }
+
+  template<typename _Tp>
+    inline void
+    gslice_array<_Tp>::operator=(const valarray<_Tp>& __v) const
+    {
+      std::__valarray_copy(_Array<_Tp>(__v), __v.size(),
+			   _M_array, _Array<size_t>(_M_index));
+    }
+
+  template<typename _Tp>
+    template<class _Dom>
+      inline void
+      gslice_array<_Tp>::operator=(const _Expr<_Dom, _Tp>& __e) const
+      {
+	std::__valarray_copy (__e, _M_index.size(), _M_array,
+			      _Array<size_t>(_M_index));
+      }
+
+#undef _DEFINE_VALARRAY_OPERATOR
+#define _DEFINE_VALARRAY_OPERATOR(_Op, _Name)				\
+  template<typename _Tp>						\
+    inline void								\
+    gslice_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const	\
+    {									\
+      _Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index),	\
+			       _Array<_Tp>(__v), __v.size());		\
+    }									\
+									\
+  template<typename _Tp>                                                \
+    template<class _Dom>				                \
+      inline void							\
+      gslice_array<_Tp>::operator _Op##= (const _Expr<_Dom, _Tp>& __e) const\
+      {									\
+	_Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index), __e,\
+				 _M_index.size());			\
+      }
+
+_DEFINE_VALARRAY_OPERATOR(*, __multiplies)
+_DEFINE_VALARRAY_OPERATOR(/, __divides)
+_DEFINE_VALARRAY_OPERATOR(%, __modulus)
+_DEFINE_VALARRAY_OPERATOR(+, __plus)
+_DEFINE_VALARRAY_OPERATOR(-, __minus)
+_DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor)
+_DEFINE_VALARRAY_OPERATOR(&, __bitwise_and)
+_DEFINE_VALARRAY_OPERATOR(|, __bitwise_or)
+_DEFINE_VALARRAY_OPERATOR(<<, __shift_left)
+_DEFINE_VALARRAY_OPERATOR(>>, __shift_right)
+
+#undef _DEFINE_VALARRAY_OPERATOR
+
+  // @} group numeric_arrays
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#endif /* _GSLICE_ARRAY_H */