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1 // The template and inlines for the -*- C++ -*- slice_array class.
3 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 /** @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.
37 #ifndef _CPP_BITS_SLICE_ARRAY_H
38 #define _CPP_BITS_SLICE_ARRAY_H 1
40 #pragma GCC system_header
48 slice(size_t, size_t, size_t);
52 size_t stride() const;
55 size_t _M_off
; // offset
57 size_t _M_st
; // stride unit
60 // The default constructor constructor is not required to initialize
61 // data members with any meaningful values, so we choose to do nothing.
66 slice::slice(size_t __o
, size_t __d
, size_t __s
)
67 : _M_off(__o
), _M_sz(__d
), _M_st(__s
) {}
81 template<typename _Tp
>
85 typedef _Tp value_type
;
87 // This constructor is implemented since we need to return a value.
88 slice_array(const slice_array
&);
90 // This operator must be public. See DR-253.
91 slice_array
& operator=(const slice_array
&);
93 void operator=(const valarray
<_Tp
>&) const;
94 void operator*=(const valarray
<_Tp
>&) const;
95 void operator/=(const valarray
<_Tp
>&) const;
96 void operator%=(const valarray
<_Tp
>&) const;
97 void operator+=(const valarray
<_Tp
>&) const;
98 void operator-=(const valarray
<_Tp
>&) const;
99 void operator^=(const valarray
<_Tp
>&) const;
100 void operator&=(const valarray
<_Tp
>&) const;
101 void operator|=(const valarray
<_Tp
>&) const;
102 void operator<<=(const valarray
<_Tp
>&) const;
103 void operator>>=(const valarray
<_Tp
>&) const;
104 void operator=(const _Tp
&);
108 void operator=(const _Expr
<_Dom
,_Tp
>&) const;
110 void operator*=(const _Expr
<_Dom
,_Tp
>&) const;
112 void operator/=(const _Expr
<_Dom
,_Tp
>&) const;
114 void operator%=(const _Expr
<_Dom
,_Tp
>&) const;
116 void operator+=(const _Expr
<_Dom
,_Tp
>&) const;
118 void operator-=(const _Expr
<_Dom
,_Tp
>&) const;
120 void operator^=(const _Expr
<_Dom
,_Tp
>&) const;
122 void operator&=(const _Expr
<_Dom
,_Tp
>&) const;
124 void operator|=(const _Expr
<_Dom
,_Tp
>&) const;
126 void operator<<=(const _Expr
<_Dom
,_Tp
>&) const;
128 void operator>>=(const _Expr
<_Dom
,_Tp
>&) const;
131 friend class valarray
<_Tp
>;
132 slice_array(_Array
<_Tp
>, const slice
&);
135 const size_t _M_stride
;
136 const _Array
<_Tp
> _M_array
;
142 template<typename _Tp
>
144 slice_array
<_Tp
>::slice_array(_Array
<_Tp
> __a
, const slice
& __s
)
145 : _M_sz(__s
.size()), _M_stride(__s
.stride()),
146 _M_array(__a
.begin() + __s
.start()) {}
148 template<typename _Tp
>
150 slice_array
<_Tp
>::slice_array(const slice_array
<_Tp
>& a
)
151 : _M_sz(a
._M_sz
), _M_stride(a
._M_stride
), _M_array(a
._M_array
) {}
153 // template<typename _Tp>
154 // inline slice_array<_Tp>::~slice_array () {}
156 template<typename _Tp
>
157 inline slice_array
<_Tp
>&
158 slice_array
<_Tp
>::operator=(const slice_array
<_Tp
>& __a
)
160 __valarray_copy(_M_array
, _M_sz
, _M_stride
, __a
._M_array
, __a
._M_stride
);
164 template<typename _Tp
>
166 slice_array
<_Tp
>::operator=(const _Tp
& __t
)
167 { __valarray_fill(_M_array
, _M_sz
, _M_stride
, __t
); }
169 template<typename _Tp
>
171 slice_array
<_Tp
>::operator=(const valarray
<_Tp
>& __v
) const
172 { __valarray_copy (_Array
<_Tp
> (__v
), _M_array
, _M_sz
, _M_stride
); }
174 template<typename _Tp
>
177 slice_array
<_Tp
>::operator=(const _Expr
<_Dom
,_Tp
>& __e
) const
178 { __valarray_copy (__e
, _M_sz
, _M_array
, _M_stride
); }
180 #undef _DEFINE_VALARRAY_OPERATOR
181 #define _DEFINE_VALARRAY_OPERATOR(_Op,_Nname) \
182 template<typename _Tp> \
184 slice_array<_Tp>::operator _Op##= (const valarray<_Tp>& __v) const \
186 _Array_augmented_##_Name (_M_array, _M_sz, _M_stride, _Array<_Tp> (__v));\
189 template<typename _Tp> template<class _Dom> \
191 slice_array<_Tp>::operator _Op##= (const _Expr<_Dom,_Tp>& __e) const \
193 _Array_augmented_##_Name (_M_array, _M_stride, __e, _M_sz); \
197 _DEFINE_VALARRAY_OPERATOR(*, multiplies
)
198 _DEFINE_VALARRAY_OPERATOR(/, divides
)
199 _DEFINE_VALARRAY_OPERATOR(%, modulus
)
200 _DEFINE_VALARRAY_OPERATOR(+, plus
)
201 _DEFINE_VALARRAY_OPERATOR(-, minus
)
202 _DEFINE_VALARRAY_OPERATOR(^, xor)
203 _DEFINE_VALARRAY_OPERATOR(&, and)
204 _DEFINE_VALARRAY_OPERATOR(|, or)
205 _DEFINE_VALARRAY_OPERATOR(<<, shift_left
)
206 _DEFINE_VALARRAY_OPERATOR(>>, shift_right
)
208 #undef _DEFINE_VALARRAY_OPERATOR
212 #endif /* _CPP_BITS_SLICE_ARRAY_H */