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-// The template and inlines for the -*- C++ -*- gslice_array class.
-
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004, 2005, 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/>.
-
-/** @file gslice_array.h
- * This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
- */
-
-// 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
-
-_GLIBCXX_BEGIN_NAMESPACE(std)
-
- /**
- * @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
-
-#endif /* _GSLICE_ARRAY_H */
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