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// The template and inlines for the -*- C++ -*- gslice_array class.
 
// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004
// 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)
// 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.
 
// 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
 
// 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>
 
/** @file gslice_array.h
 *  This is an internal header file, included by other library headers.
 *  You should not attempt to use it directly.
 */
 
#ifndef _GSLICE_ARRAY_H
#define _GSLICE_ARRAY_H 1
 
#pragma GCC system_header
 
namespace std
{
  /**
   *  @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
 
} // std::
 
#endif /* _GSLICE_ARRAY_H */
 
// Local Variables:
// mode:c++
// End:

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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libstdc++-v3/] [include/] [bits/] [gslice_array.h] - Blame information for rev 17

Line No.	Rev	Author	Line
1	17	jlechner	`// The template and inlines for the -- C++ -- gslice_array class.`
2
3			`// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004`
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			`// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>`
32
33			`/** @file gslice_array.h`
34			`* This is an internal header file, included by other library headers.`
35			`* You should not attempt to use it directly.`
36			`*/`
37
38			`#ifndef _GSLICE_ARRAY_H`
39			`#define _GSLICE_ARRAY_H 1`
40
41			`#pragma GCC system_header`
42
43			`namespace std`
44			`{`
45			`/**`
46			`* @brief Reference to multi-dimensional subset of an array.`
47			`*`
48			`* A gslice_array is a reference to the actual elements of an array`
49			`* specified by a gslice. The way to get a gslice_array is to call`
50			`* operator[](gslice) on a valarray. The returned gslice_array then`
51			`* permits carrying operations out on the referenced subset of elements in`
52			`* the original valarray. For example, operator+=(valarray) will add`
53			`* values to the subset of elements in the underlying valarray this`
54			`* gslice_array refers to.`
55			`*`
56			`* @param Tp Element type.`
57			`*/`
58			`template<typename _Tp>`
59			`class gslice_array`
60			`{`
61			`public:`
62			`typedef _Tp value_type;`
63
64			`// _GLIBCXX_RESOLVE_LIB_DEFECTS`
65			`// 253. valarray helper functions are almost entirely useless`
66
67			`/// Copy constructor. Both slices refer to the same underlying array.`
68			`gslice_array(const gslice_array&);`
69
70			`/// Assignment operator. Assigns slice elements to corresponding`
71			`/// elements of @a a.`
72			`gslice_array& operator=(const gslice_array&);`
73
74			`/// Assign slice elements to corresponding elements of @a v.`
75			`void operator=(const valarray<_Tp>&) const;`
76			`/// Multiply slice elements by corresponding elements of @a v.`
77			`void operator*=(const valarray<_Tp>&) const;`
78			`/// Divide slice elements by corresponding elements of @a v.`
79			`void operator/=(const valarray<_Tp>&) const;`
80			`/// Modulo slice elements by corresponding elements of @a v.`
81			`void operator%=(const valarray<_Tp>&) const;`
82			`/// Add corresponding elements of @a v to slice elements.`
83			`void operator+=(const valarray<_Tp>&) const;`
84			`/// Subtract corresponding elements of @a v from slice elements.`
85			`void operator-=(const valarray<_Tp>&) const;`
86			`/// Logical xor slice elements with corresponding elements of @a v.`
87			`void operator^=(const valarray<_Tp>&) const;`
88			`/// Logical and slice elements with corresponding elements of @a v.`
89			`void operator&=(const valarray<_Tp>&) const;`
90			`/// Logical or slice elements with corresponding elements of @a v.`
91			`void operator\|=(const valarray<_Tp>&) const;`
92			`/// Left shift slice elements by corresponding elements of @a v.`
93			`void operator<<=(const valarray<_Tp>&) const;`
94			`/// Right shift slice elements by corresponding elements of @a v.`
95			`void operator>>=(const valarray<_Tp>&) const;`
96			`/// Assign all slice elements to @a t.`
97			`void operator=(const _Tp&) const;`
98
99			`template<class _Dom>`
100			`void operator=(const _Expr<_Dom, _Tp>&) const;`
101			`template<class _Dom>`
102			`void operator*=(const _Expr<_Dom, _Tp>&) const;`
103			`template<class _Dom>`
104			`void operator/=(const _Expr<_Dom, _Tp>&) const;`
105			`template<class _Dom>`
106			`void operator%=(const _Expr<_Dom, _Tp>&) const;`
107			`template<class _Dom>`
108			`void operator+=(const _Expr<_Dom, _Tp>&) const;`
109			`template<class _Dom>`
110			`void operator-=(const _Expr<_Dom, _Tp>&) const;`
111			`template<class _Dom>`
112			`void operator^=(const _Expr<_Dom, _Tp>&) const;`
113			`template<class _Dom>`
114			`void operator&=(const _Expr<_Dom, _Tp>&) const;`
115			`template<class _Dom>`
116			`void operator\|=(const _Expr<_Dom, _Tp>&) const;`
117			`template<class _Dom>`
118			`void operator<<=(const _Expr<_Dom, _Tp>&) const;`
119			`template<class _Dom>`
120			`void operator>>=(const _Expr<_Dom, _Tp>&) const;`
121
122			`private:`
123			`_Array<_Tp> _M_array;`
124			`const valarray<size_t>& _M_index;`
125
126			`friend class valarray<_Tp>;`
127
128			`gslice_array(_Array<_Tp>, const valarray<size_t>&);`
129
130			`// not implemented`
131			`gslice_array();`
132			`};`
133
134			`template<typename _Tp>`
135			`inline`
136			`gslice_array<_Tp>::gslice_array(_Array<_Tp> __a,`
137			`const valarray<size_t>& __i)`
138			`: _M_array(__a), _M_index(__i) {}`
139
140			`template<typename _Tp>`
141			`inline`
142			`gslice_array<_Tp>::gslice_array(const gslice_array<_Tp>& __a)`
143			`: _M_array(__a._M_array), _M_index(__a._M_index) {}`
144
145			`template<typename _Tp>`
146			`inline gslice_array<_Tp>&`
147			`gslice_array<_Tp>::operator=(const gslice_array<_Tp>& __a)`
148			`{`
149			`std::__valarray_copy(_Array<_Tp>(__a._M_array),`
150			`_Array<size_t>(__a._M_index), _M_index.size(),`
151			`_M_array, _Array<size_t>(_M_index));`
152			`return *this;`
153			`}`
154
155			`template<typename _Tp>`
156			`inline void`
157			`gslice_array<_Tp>::operator=(const _Tp& __t) const`
158			`{`
159			`std::__valarray_fill(_M_array, _Array<size_t>(_M_index),`
160			`_M_index.size(), __t);`
161			`}`
162
163			`template<typename _Tp>`
164			`inline void`
165			`gslice_array<_Tp>::operator=(const valarray<_Tp>& __v) const`
166			`{`
167			`std::__valarray_copy(_Array<_Tp>(__v), __v.size(),`
168			`_M_array, _Array<size_t>(_M_index));`
169			`}`
170
171			`template<typename _Tp>`
172			`template<class _Dom>`
173			`inline void`
174			`gslice_array<_Tp>::operator=(const _Expr<_Dom, _Tp>& __e) const`
175			`{`
176			`std::__valarray_copy (__e, _M_index.size(), _M_array,`
177			`_Array<size_t>(_M_index));`
178			`}`
179
180			`#undef _DEFINE_VALARRAY_OPERATOR`
181			`#define _DEFINE_VALARRAY_OPERATOR(_Op, _Name) \`
182			`template<typename _Tp> \`
183			`inline void \`
184			`gslice_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const \`
185			`{ \`
186			`_Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index), \`
187			`_Array<_Tp>(__v), __v.size()); \`
188			`} \`
189			`\`
190			`template<typename _Tp> \`
191			`template<class _Dom> \`
192			`inline void \`
193			`gslice_array<_Tp>::operator _Op##= (const _Expr<_Dom, _Tp>& __e) const\`
194			`{ \`
195			`_Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index), __e,\`
196			`_M_index.size()); \`
197			`}`
198
199			`_DEFINE_VALARRAY_OPERATOR(*, __multiplies)`
200			`_DEFINE_VALARRAY_OPERATOR(/, __divides)`
201			`_DEFINE_VALARRAY_OPERATOR(%, __modulus)`
202			`_DEFINE_VALARRAY_OPERATOR(+, __plus)`
203			`_DEFINE_VALARRAY_OPERATOR(-, __minus)`
204			`_DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor)`
205			`_DEFINE_VALARRAY_OPERATOR(&, __bitwise_and)`
206			`_DEFINE_VALARRAY_OPERATOR(\|, __bitwise_or)`
207			`_DEFINE_VALARRAY_OPERATOR(<<, __shift_left)`
208			`_DEFINE_VALARRAY_OPERATOR(>>, __shift_right)`
209
210			`#undef _DEFINE_VALARRAY_OPERATOR`
211
212			`} // std::`
213
214			`#endif /* _GSLICE_ARRAY_H */`
215
216			`// Local Variables:`
217			`// mode:c++`
218			`// End:`