libstdc++-v3/include/bits/gslice_array.h

   1 // The template and inlines for the -*- C++ -*- gslice_array class.
   2
   3 // Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
  31
  32 /** @file gslice_array.h
  33  *  This is an internal header file, included by other library headers.
  34  *  You should not attempt to use it directly.
  35  */
  36
  37 #ifndef _GSLICE_ARRAY_H
  38 #define _GSLICE_ARRAY_H 1
  39
  40 #pragma GCC system_header
  41
  42 namespace std {
  43
  44   template<typename _Tp>
  45     class gslice_array
  46     {
  47     public:
  48       typedef _Tp value_type;
  49
  50       void operator=(const valarray<_Tp>&) const;
  51       void operator*=(const valarray<_Tp>&) const;
  52       void operator/=(const valarray<_Tp>&) const;
  53       void operator%=(const valarray<_Tp>&) const;
  54       void operator+=(const valarray<_Tp>&) const;
  55       void operator-=(const valarray<_Tp>&) const;
  56       void operator^=(const valarray<_Tp>&) const;
  57       void operator&=(const valarray<_Tp>&) const;
  58       void operator|=(const valarray<_Tp>&) const;
  59       void operator<<=(const valarray<_Tp>&) const;
  60       void operator>>=(const valarray<_Tp>&) const;
  61       void operator=(const _Tp&) const;
  62
  63       template<class _Dom>
  64         void operator=(const _Expr<_Dom,_Tp>&) const;
  65       template<class _Dom>
  66         void operator*=(const _Expr<_Dom,_Tp>&) const;
  67       template<class _Dom>
  68         void operator/=(const _Expr<_Dom,_Tp>&) const;
  69       template<class _Dom>
  70         void operator%=(const _Expr<_Dom,_Tp>&) const;
  71       template<class _Dom>
  72         void operator+=(const _Expr<_Dom,_Tp>&) const;
  73       template<class _Dom>
  74         void operator-=(const _Expr<_Dom,_Tp>&) const;
  75       template<class _Dom>
  76         void operator^=(const _Expr<_Dom,_Tp>&) const;
  77       template<class _Dom>
  78         void operator&=(const _Expr<_Dom,_Tp>&) const;
  79       template<class _Dom>
  80         void operator|=(const _Expr<_Dom,_Tp>&) const;
  81       template<class _Dom>
  82         void operator<<=(const _Expr<_Dom,_Tp>&) const;
  83       template<class _Dom>
  84         void operator>>=(const _Expr<_Dom,_Tp>&) const;
  85
  86     private:
  87       _Array<_Tp>    _M_array;
  88       const valarray<size_t>& _M_index;
  89
  90       friend class valarray<_Tp>;
  91
  92       gslice_array(_Array<_Tp>, const valarray<size_t>&);
  93
  94       // this constructor needs to be implemented.
  95       gslice_array(const gslice_array&);
  96
  97       // not implemented
  98       gslice_array();
  99       gslice_array& operator= (const gslice_array&);
 100     };
 101
 102   template<typename _Tp>
 103     inline
 104     gslice_array<_Tp>::gslice_array(_Array<_Tp> __a,
 105                                     const valarray<size_t>& __i)
 106       : _M_array(__a), _M_index(__i) {}
 107
 108
 109   template<typename _Tp>
 110     inline
 111     gslice_array<_Tp>::gslice_array(const gslice_array<_Tp>& __a)
 112       : _M_array(__a._M_array), _M_index(__a._M_index) {}
 113
 114
 115   template<typename _Tp>
 116     inline void
 117     gslice_array<_Tp>::operator=(const _Tp& __t) const
 118     {
 119       std::__valarray_fill(_M_array, _Array<size_t>(_M_index),
 120                            _M_index.size(), __t);
 121     }
 122
 123   template<typename _Tp>
 124     inline void
 125     gslice_array<_Tp>::operator=(const valarray<_Tp>& __v) const
 126     {
 127       std::__valarray_copy(_Array<_Tp>(__v), __v.size(),
 128                            _M_array, _Array<size_t>(_M_index));
 129     }
 130
 131   template<typename _Tp>
 132     template<class _Dom>
 133       inline void
 134       gslice_array<_Tp>::operator=(const _Expr<_Dom, _Tp>& __e) const
 135       {
 136         std::__valarray_copy (__e, _M_index.size(), _M_array,
 137                               _Array<size_t>(_M_index));
 138       }
 139
 140 #undef _DEFINE_VALARRAY_OPERATOR
 141 #define _DEFINE_VALARRAY_OPERATOR(_Op, _Name)                           \
 142   template<typename _Tp>                                                \
 143     inline void                                                         \
 144     gslice_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const  \
 145     {                                                                   \
 146       _Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index),      \
 147                               _Array<_Tp>(__v), __v.size());            \
 148     }                                                                   \
 149                                                                         \
 150   template<typename _Tp>                                                \
 151     template<class _Dom>                                                \
 152       inline void                                                       \
 153       gslice_array<_Tp>::operator _Op##= (const _Expr<_Dom, _Tp>& __e) const\
 154       {                                                                 \
 155         _Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index), __e,\
 156                                  _M_index.size());                      \
 157       }
 158
 159 _DEFINE_VALARRAY_OPERATOR(*, __multiplies)
 160 _DEFINE_VALARRAY_OPERATOR(/, __divides)
 161 _DEFINE_VALARRAY_OPERATOR(%, __modulus)
 162 _DEFINE_VALARRAY_OPERATOR(+, __plus)
 163 _DEFINE_VALARRAY_OPERATOR(-, __minus)
 164 _DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor)
 165 _DEFINE_VALARRAY_OPERATOR(&, __bitwise_and)
 166 _DEFINE_VALARRAY_OPERATOR(|, __bitwise_or)
 167 _DEFINE_VALARRAY_OPERATOR(<<, __shift_left)
 168 _DEFINE_VALARRAY_OPERATOR(>>, __shift_right)
 169
 170 #undef _DEFINE_VALARRAY_OPERATOR
 171
 172 } // std::
 173
 174 #endif /* _GSLICE_ARRAY_H */
 175
 176 // Local Variables:
 177 // mode:c++
 178 // End: