// The template and inlines for the -*- C++ -*- gslice_array class.
-// Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+// 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 2, or (at your option)
+// 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,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
-// USA.
+// 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.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
+// 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.
*/
-#ifndef _CPP_BITS_GSLICE_ARRAY
-#define _CPP_BITS_GSLICE_ARRAY 1
+// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
-#pragma GCC system_header
+#ifndef _GSLICE_ARRAY_H
+#define _GSLICE_ARRAY_H 1
-namespace std {
+#pragma GCC system_header
- template<typename _Tp> class gslice_array
+_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;
-
- void operator= (const valarray<_Tp>&) const;
- void operator*= (const valarray<_Tp>&) const;
- void operator/= (const valarray<_Tp>&) const;
- void operator%= (const valarray<_Tp>&) const;
- void operator+= (const valarray<_Tp>&) const;
- void operator-= (const valarray<_Tp>&) const;
- void operator^= (const valarray<_Tp>&) const;
- void operator&= (const valarray<_Tp>&) const;
- void operator|= (const valarray<_Tp>&) const;
- void operator<<=(const valarray<_Tp>&) const;
- void operator>>=(const valarray<_Tp>&) const;
- void operator=(const _Tp&);
-
- 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;
-
+ 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>&);
-
- // this constructor needs to be implemented.
- gslice_array (const gslice_array&);
-
- // not implemented
- gslice_array();
- gslice_array& operator= (const gslice_array&);
+ _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>
+ template<typename _Tp>
inline
- gslice_array<_Tp>::gslice_array (_Array<_Tp> __a,
- const valarray<size_t>& __i)
- : _M_array (__a), _M_index (__i) {}
-
+ gslice_array<_Tp>::gslice_array(_Array<_Tp> __a,
+ const valarray<size_t>& __i)
+ : _M_array(__a), _M_index(__i) {}
- template<typename _Tp>
+ template<typename _Tp>
inline
- gslice_array<_Tp>::gslice_array (const gslice_array<_Tp>& __a)
- : _M_array (__a._M_array), _M_index (__a._M_index) {}
+ gslice_array<_Tp>::gslice_array(const gslice_array<_Tp>& __a)
+ : _M_array(__a._M_array), _M_index(__a._M_index) {}
-
- template<typename _Tp>
- inline void
- gslice_array<_Tp>::operator= (const _Tp& __t)
- {
- __valarray_fill (_M_array, _Array<size_t>(_M_index),
- _M_index.size(), __t);
+ 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>
+ template<typename _Tp>
inline void
- gslice_array<_Tp>::operator= (const valarray<_Tp>& __v) const
+ gslice_array<_Tp>::operator=(const _Tp& __t) const
{
- __valarray_copy (_Array<_Tp> (__v), __v.size (),
- _M_array, _Array<size_t>(_M_index));
+ std::__valarray_fill(_M_array, _Array<size_t>(_M_index),
+ _M_index.size(), __t);
}
- template<typename _Tp>
- template<class E>
+ template<typename _Tp>
inline void
- gslice_array<_Tp>::operator= (const _Expr<E, _Tp>& __e) const
+ gslice_array<_Tp>::operator=(const valarray<_Tp>& __v) const
{
- __valarray_copy (__e, _M_index.size(), _M_array,
- _Array<size_t>(_M_index));
+ 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 ()); \
-} \
+#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 E> \
-inline void \
-gslice_array<_Tp>::operator op##= (const _Expr<E, _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(^, xor)
-_DEFINE_VALARRAY_OPERATOR(&, and)
-_DEFINE_VALARRAY_OPERATOR(|, or)
-_DEFINE_VALARRAY_OPERATOR(<<, shift_left)
-_DEFINE_VALARRAY_OPERATOR(>>, shift_right)
+ 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
-} // std::
+ // @} group numeric_arrays
-#endif /* _CPP_BITS_GSLICE_ARRAY */
+_GLIBCXX_END_NAMESPACE
-// Local Variables:
-// mode:c++
-// End:
+#endif /* _GSLICE_ARRAY_H */