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

   1 // The template and inlines for the -*- C++ -*- slice_array class.
   2
   3 // Copyright (C) 1997-1999, 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 slice_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_SLICE_ARRAY_H
  38 #define _CPP_BITS_SLICE_ARRAY_H 1
  39
  40 #pragma GCC system_header
  41
  42 namespace std
  43 {
  44
  45     template<typename _Tp>
  46     class slice_array
  47     {
  48     public:
  49         typedef _Tp value_type;
  50
  51       // This constructor is implemented since we need to return a value.
  52       slice_array (const slice_array&);
  53
  54       // This operator must be public.  See DR-253.
  55       slice_array& operator= (const slice_array&);
  56
  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 valarray<_Tp>&) const;
  62         void operator-=  (const valarray<_Tp>&) const;
  63         void operator^=  (const valarray<_Tp>&) const;
  64         void operator&=  (const valarray<_Tp>&) const;
  65         void operator|=  (const valarray<_Tp>&) const;
  66         void operator<<= (const valarray<_Tp>&) const;
  67         void operator>>= (const valarray<_Tp>&) const;
  68         void operator= (const _Tp &);
  69         //        ~slice_array ();
  70
  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         template<class _Dom>
  86         void operator&=  (const _Expr<_Dom,_Tp>&) const;
  87         template<class _Dom>
  88         void operator|=  (const _Expr<_Dom,_Tp>&) const;
  89         template<class _Dom>
  90         void operator<<= (const _Expr<_Dom,_Tp>&) const;
  91         template<class _Dom>
  92         void operator>>= (const _Expr<_Dom,_Tp>&) const;
  93
  94     private:
  95         friend class valarray<_Tp>;
  96         slice_array(_Array<_Tp>, const slice&);
  97
  98         const size_t     _M_sz;
  99         const size_t     _M_stride;
 100         const _Array<_Tp> _M_array;
 101
 102         // not implemented
 103         slice_array ();
 104     };
 105
 106     template<typename _Tp>
 107     inline slice_array<_Tp>::slice_array (_Array<_Tp> __a, const slice& __s)
 108             : _M_sz (__s.size ()), _M_stride (__s.stride ()),
 109               _M_array (__a.begin () + __s.start ()) {}
 110
 111
 112     template<typename _Tp>
 113     inline slice_array<_Tp>::slice_array(const slice_array<_Tp>& a)
 114             : _M_sz(a._M_sz), _M_stride(a._M_stride), _M_array(a._M_array) {}
 115
 116     //    template<typename _Tp>
 117     //    inline slice_array<_Tp>::~slice_array () {}
 118
 119   template<typename _Tp>
 120   inline slice_array<_Tp>&
 121   slice_array<_Tp>::operator=(const slice_array<_Tp>& __a)
 122   {
 123     __valarray_copy(_M_array, _M_sz, _M_stride, __a._M_array, __a._M_stride);
 124     return *this;
 125   }
 126
 127
 128     template<typename _Tp>
 129     inline void
 130     slice_array<_Tp>::operator= (const _Tp& __t)
 131     { __valarray_fill (_M_array, _M_sz, _M_stride, __t); }
 132
 133     template<typename _Tp>
 134     inline void
 135     slice_array<_Tp>::operator= (const valarray<_Tp>& __v) const
 136     { __valarray_copy (_Array<_Tp> (__v), _M_array, _M_sz, _M_stride); }
 137
 138     template<typename _Tp>
 139     template<class _Dom>
 140     inline void
 141     slice_array<_Tp>::operator= (const _Expr<_Dom,_Tp>& __e) const
 142     { __valarray_copy (__e, _M_sz, _M_array, _M_stride); }
 143
 144 #undef _DEFINE_VALARRAY_OPERATOR
 145 #define _DEFINE_VALARRAY_OPERATOR(op, name)                             \
 146 template<typename _Tp>                                                  \
 147 inline void                                                             \
 148 slice_array<_Tp>::operator op##= (const valarray<_Tp>& __v) const       \
 149 {                                                                       \
 150   _Array_augmented_##name (_M_array, _M_sz, _M_stride, _Array<_Tp> (__v));\
 151 }                                                                       \
 152                                                                         \
 153 template<typename _Tp> template<class _Dom>                             \
 154 inline void                                                             \
 155 slice_array<_Tp>::operator op##= (const _Expr<_Dom,_Tp>& __e) const     \
 156 {                                                                       \
 157     _Array_augmented_##name (_M_array, _M_stride, __e, _M_sz);          \
 158 }
 159
 160
 161 _DEFINE_VALARRAY_OPERATOR(*, multiplies)
 162 _DEFINE_VALARRAY_OPERATOR(/, divides)
 163 _DEFINE_VALARRAY_OPERATOR(%, modulus)
 164 _DEFINE_VALARRAY_OPERATOR(+, plus)
 165 _DEFINE_VALARRAY_OPERATOR(-, minus)
 166 _DEFINE_VALARRAY_OPERATOR(^, xor)
 167 _DEFINE_VALARRAY_OPERATOR(&, and)
 168 _DEFINE_VALARRAY_OPERATOR(|, or)
 169 _DEFINE_VALARRAY_OPERATOR(<<, shift_left)
 170 _DEFINE_VALARRAY_OPERATOR(>>, shift_right)
 171
 172 #undef _DEFINE_VALARRAY_OPERATOR
 173
 174 } // std::
 175
 176 #endif /* _CPP_BITS_SLICE_ARRAY_H */
 177
 178 // Local Variables:
 179 // mode:c++
 180 // End: