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

   1 // The template and inlines for the -*- C++ -*- gslice_array class.
   2
   3 // Copyright (C) 1997-2001 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 _CPP_BITS_GSLICE_ARRAY
  38 #define _CPP_BITS_GSLICE_ARRAY 1
  39
  40 #pragma GCC system_header
  41
  42 namespace std {
  43
  44     template<typename _Tp> class gslice_array
  45     {
  46     public:
  47         typedef _Tp value_type;
  48
  49         void operator=  (const valarray<_Tp>&) const;
  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 _Tp&);
  61
  62         template<class _Dom>
  63         void operator= (const _Expr<_Dom,_Tp>&) const;
  64         template<class _Dom>
  65         void operator*= (const _Expr<_Dom,_Tp>&) const;
  66         template<class _Dom>
  67         void operator/= (const _Expr<_Dom,_Tp>&) const;
  68         template<class _Dom>
  69         void operator%= (const _Expr<_Dom,_Tp>&) const;
  70         template<class _Dom>
  71         void operator+= (const _Expr<_Dom,_Tp>&) const;
  72         template<class _Dom>
  73         void operator-= (const _Expr<_Dom,_Tp>&) const;
  74         template<class _Dom>
  75         void operator^= (const _Expr<_Dom,_Tp>&) const;
  76         template<class _Dom>
  77         void operator&= (const _Expr<_Dom,_Tp>&) const;
  78         template<class _Dom>
  79         void operator|= (const _Expr<_Dom,_Tp>&) const;
  80         template<class _Dom>
  81         void operator<<= (const _Expr<_Dom,_Tp>&) const;
  82         template<class _Dom>
  83         void operator>>= (const _Expr<_Dom,_Tp>&) const;
  84
  85     private:
  86         _Array<_Tp>    _M_array;
  87         const valarray<size_t>& _M_index;
  88
  89         friend class valarray<_Tp>;
  90
  91         gslice_array (_Array<_Tp>, const valarray<size_t>&);
  92
  93         // this constructor needs to be implemented.
  94         gslice_array (const gslice_array&);
  95
  96         // not implemented
  97         gslice_array();
  98         gslice_array& operator= (const gslice_array&);
  99     };
 100
 101     template<typename _Tp>
 102     inline
 103     gslice_array<_Tp>::gslice_array (_Array<_Tp> __a,
 104                                      const valarray<size_t>& __i)
 105             : _M_array (__a), _M_index (__i) {}
 106
 107
 108     template<typename _Tp>
 109     inline
 110     gslice_array<_Tp>::gslice_array (const gslice_array<_Tp>& __a)
 111             : _M_array (__a._M_array), _M_index (__a._M_index) {}
 112
 113
 114     template<typename _Tp>
 115     inline void
 116     gslice_array<_Tp>::operator= (const _Tp& __t)
 117     {
 118         __valarray_fill (_M_array, _Array<size_t>(_M_index),
 119                          _M_index.size(), __t);
 120     }
 121
 122     template<typename _Tp>
 123     inline void
 124     gslice_array<_Tp>::operator= (const valarray<_Tp>& __v) const
 125     {
 126         __valarray_copy (_Array<_Tp> (__v), __v.size (),
 127                          _M_array, _Array<size_t>(_M_index));
 128     }
 129
 130     template<typename _Tp>
 131     template<class E>
 132     inline void
 133     gslice_array<_Tp>::operator= (const _Expr<E, _Tp>& __e) const
 134     {
 135         __valarray_copy (__e, _M_index.size(), _M_array,
 136                          _Array<size_t>(_M_index));
 137     }
 138
 139 #undef _DEFINE_VALARRAY_OPERATOR
 140 #define _DEFINE_VALARRAY_OPERATOR(op, name)                             \
 141 template<typename _Tp>                                                  \
 142 inline void                                                             \
 143 gslice_array<_Tp>::operator op##= (const valarray<_Tp>& __v) const      \
 144 {                                                                       \
 145     _Array_augmented_##name (_M_array, _Array<size_t>(_M_index),        \
 146                               _Array<_Tp> (__v), __v.size ());          \
 147 }                                                                       \
 148                                                                         \
 149 template<typename _Tp> template<class E>                                \
 150 inline void                                                             \
 151 gslice_array<_Tp>::operator op##= (const _Expr<E, _Tp>& __e) const      \
 152 {                                                                       \
 153     _Array_augmented_##name (_M_array, _Array<size_t>(_M_index), __e,   \
 154                               _M_index.size());                         \
 155 }
 156
 157 _DEFINE_VALARRAY_OPERATOR(*, multiplies)
 158 _DEFINE_VALARRAY_OPERATOR(/, divides)
 159 _DEFINE_VALARRAY_OPERATOR(%, modulus)
 160 _DEFINE_VALARRAY_OPERATOR(+, plus)
 161 _DEFINE_VALARRAY_OPERATOR(-, minus)
 162 _DEFINE_VALARRAY_OPERATOR(^, xor)
 163 _DEFINE_VALARRAY_OPERATOR(&, and)
 164 _DEFINE_VALARRAY_OPERATOR(|, or)
 165 _DEFINE_VALARRAY_OPERATOR(<<, shift_left)
 166 _DEFINE_VALARRAY_OPERATOR(>>, shift_right)
 167
 168 #undef _DEFINE_VALARRAY_OPERATOR
 169
 170 } // std::
 171
 172 #endif /* _CPP_BITS_GSLICE_ARRAY */
 173
 174 // Local Variables:
 175 // mode:c++
 176 // End: