1 // The template and inlines for the -*- C++ -*- indirect_array class.
3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
4 // Free Software Foundation, Inc.
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)
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.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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.
31 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
33 /** @file indirect_array.h
34 * This is an internal header file, included by other library headers.
35 * You should not attempt to use it directly.
38 #ifndef _CPP_BITS_INDIRECT_ARRAY_H
39 #define _CPP_BITS_INDIRECT_ARRAY_H 1
41 #pragma GCC system_header
49 typedef _Tp value_type;
51 // XXX: This is a proposed resolution for DR-253.
52 indirect_array& operator=(const indirect_array&);
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 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 _Tp&) const;
69 void operator=(const _Expr<_Dom, _Tp>&) const;
71 void operator*=(const _Expr<_Dom, _Tp>&) const;
73 void operator/=(const _Expr<_Dom, _Tp>&) const;
75 void operator%=(const _Expr<_Dom, _Tp>&) const;
77 void operator+=(const _Expr<_Dom, _Tp>&) const;
79 void operator-=(const _Expr<_Dom, _Tp>&) const;
81 void operator^=(const _Expr<_Dom, _Tp>&) const;
83 void operator&=(const _Expr<_Dom, _Tp>&) const;
85 void operator|=(const _Expr<_Dom, _Tp>&) const;
87 void operator<<=(const _Expr<_Dom, _Tp>&) const;
89 void operator>>=(const _Expr<_Dom, _Tp>&) const;
92 indirect_array(const indirect_array&);
93 indirect_array(_Array<_Tp>, size_t, _Array<size_t>);
95 friend class valarray<_Tp>;
96 friend class gslice_array<_Tp>;
99 const _Array<size_t> _M_index;
100 const _Array<_Tp> _M_array;
106 template<typename _Tp>
108 indirect_array<_Tp>::indirect_array(const indirect_array<_Tp>& __a)
109 : _M_sz(__a._M_sz), _M_index(__a._M_index), _M_array(__a._M_array) {}
111 template<typename _Tp>
113 indirect_array<_Tp>::indirect_array(_Array<_Tp> __a, size_t __s,
115 : _M_sz(__s), _M_index(__i), _M_array(__a) {}
117 template<typename _Tp>
118 inline indirect_array<_Tp>&
119 indirect_array<_Tp>::operator=(const indirect_array<_Tp>& __a)
121 __valarray_copy(__a._M_array, _M_sz, __a._M_index, _M_array, _M_index);
126 template<typename _Tp>
128 indirect_array<_Tp>::operator=(const _Tp& __t) const
129 { __valarray_fill(_M_array, _M_index, _M_sz, __t); }
131 template<typename _Tp>
133 indirect_array<_Tp>::operator=(const valarray<_Tp>& __v) const
134 { __valarray_copy(_Array<_Tp>(__v), _M_sz, _M_array, _M_index); }
136 template<typename _Tp>
139 indirect_array<_Tp>::operator=(const _Expr<_Dom,_Tp>& __e) const
140 { __valarray_copy(__e, _M_sz, _M_array, _M_index); }
142 #undef _DEFINE_VALARRAY_OPERATOR
143 #define _DEFINE_VALARRAY_OPERATOR(_Op, _Name) \
144 template<typename _Tp> \
146 indirect_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const\
148 _Array_augmented_##_Name(_M_array, _M_index, _Array<_Tp>(__v), _M_sz); \
151 template<typename _Tp> \
152 template<class _Dom> \
154 indirect_array<_Tp>::operator _Op##=(const _Expr<_Dom,_Tp>& __e) const\
156 _Array_augmented_##_Name(_M_array, _M_index, __e, _M_sz); \
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)
170 #undef _DEFINE_VALARRAY_OPERATOR
174 #endif /* _CPP_BITS_INDIRECT_ARRAY_H */