1 // The template and inlines for the -*- C++ -*- gslice_array class.
3 // Copyright (C) 1997-1999 Free Software Foundation, Inc.
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)
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.
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,
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.
30 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
32 #ifndef _CPP_BITS_GSLICE_ARRAY
33 #define _CPP_BITS_GSLICE_ARRAY 1
37 template<typename _Tp> class gslice_array
40 typedef _Tp value_type;
42 void operator= (const valarray<_Tp>&) const;
43 void operator*= (const valarray<_Tp>&) const;
44 void operator/= (const valarray<_Tp>&) const;
45 void operator%= (const valarray<_Tp>&) const;
46 void operator+= (const valarray<_Tp>&) const;
47 void operator-= (const valarray<_Tp>&) const;
48 void operator^= (const valarray<_Tp>&) const;
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 _Tp&);
56 void operator= (const _Expr<_Dom,_Tp>&) const;
58 void operator*= (const _Expr<_Dom,_Tp>&) const;
60 void operator/= (const _Expr<_Dom,_Tp>&) const;
62 void operator%= (const _Expr<_Dom,_Tp>&) const;
64 void operator+= (const _Expr<_Dom,_Tp>&) const;
66 void operator-= (const _Expr<_Dom,_Tp>&) const;
68 void operator^= (const _Expr<_Dom,_Tp>&) const;
70 void operator&= (const _Expr<_Dom,_Tp>&) const;
72 void operator|= (const _Expr<_Dom,_Tp>&) const;
74 void operator<<= (const _Expr<_Dom,_Tp>&) const;
76 void operator>>= (const _Expr<_Dom,_Tp>&) const;
80 const valarray<size_t>& _M_index;
82 friend class valarray<_Tp>;
84 gslice_array (_Array<_Tp>, const valarray<size_t>&);
86 // this constructor needs to be implemented.
87 gslice_array (const gslice_array&);
91 gslice_array& operator= (const gslice_array&);
94 template<typename _Tp>
96 gslice_array<_Tp>::gslice_array (_Array<_Tp> __a,
97 const valarray<size_t>& __i)
98 : _M_array (__a), _M_index (__i) {}
101 template<typename _Tp>
103 gslice_array<_Tp>::gslice_array (const gslice_array<_Tp>& __a)
104 : _M_array (__a._M_array), _M_index (__a._M_index) {}
107 template<typename _Tp>
109 gslice_array<_Tp>::operator= (const _Tp& __t)
111 __valarray_fill (_M_array, _Array<size_t>(_M_index),
112 _M_index.size(), __t);
115 template<typename _Tp>
117 gslice_array<_Tp>::operator= (const valarray<_Tp>& __v) const
119 __valarray_copy (_Array<_Tp> (__v), __v.size (),
120 _M_array, _Array<size_t>(_M_index));
123 template<typename _Tp>
126 gslice_array<_Tp>::operator= (const _Expr<E, _Tp>& __e) const
128 __valarray_copy (__e, _M_index.size(), _M_array,
129 _Array<size_t>(_M_index));
132 #undef _DEFINE_VALARRAY_OPERATOR
133 #define _DEFINE_VALARRAY_OPERATOR(op, name) \
134 template<typename _Tp> \
136 gslice_array<_Tp>::operator##op##= (const valarray<_Tp>& __v) const \
138 _Array_augmented_##name (_M_array, _Array<size_t>(_M_index), \
139 _Array<_Tp> (__v), __v.size ()); \
142 template<typename _Tp> template<class E> \
144 gslice_array<_Tp>::operator##op##= (const _Expr<E, _Tp>& __e) const \
146 _Array_augmented_##name (_M_array, _Array<size_t>(_M_index), __e, \
150 _DEFINE_VALARRAY_OPERATOR(*, multiplies)
151 _DEFINE_VALARRAY_OPERATOR(/, divides)
152 _DEFINE_VALARRAY_OPERATOR(%, modulus)
153 _DEFINE_VALARRAY_OPERATOR(+, plus)
154 _DEFINE_VALARRAY_OPERATOR(-, minus)
155 _DEFINE_VALARRAY_OPERATOR(^, xor)
156 _DEFINE_VALARRAY_OPERATOR(&, and)
157 _DEFINE_VALARRAY_OPERATOR(|, or)
158 _DEFINE_VALARRAY_OPERATOR(<<, shift_left)
159 _DEFINE_VALARRAY_OPERATOR(>>, shift_right)
161 #undef _DEFINE_VALARRAY_OPERATOR
165 #endif /* _CPP_BITS_GSLICE_ARRAY */