slice_array.h

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00001 // The template and inlines for the -*- C++ -*- slice_array class. 00002 00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. 00004 // 00005 // This file is part of the GNU ISO C++ Library. This library is free 00006 // software; you can redistribute it and/or modify it under the 00007 // terms of the GNU General Public License as published by the 00008 // Free Software Foundation; either version 2, or (at your option) 00009 // any later version. 00010 00011 // This library is distributed in the hope that it will be useful, 00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 // GNU General Public License for more details. 00015 00016 // You should have received a copy of the GNU General Public License along 00017 // with this library; see the file COPYING. If not, write to the Free 00018 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 00019 // USA. 00020 00021 // As a special exception, you may use this file as part of a free software 00022 // library without restriction. Specifically, if other files instantiate 00023 // templates or use macros or inline functions from this file, or you compile 00024 // this file and link it with other files to produce an executable, this 00025 // file does not by itself cause the resulting executable to be covered by 00026 // the GNU General Public License. This exception does not however 00027 // invalidate any other reasons why the executable file might be covered by 00028 // the GNU General Public License. 00029 00030 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr> 00031 00037 #ifndef _CPP_BITS_SLICE_ARRAY_H 00038 #define _CPP_BITS_SLICE_ARRAY_H 1 00039 00040 #pragma GCC system_header 00041 00042 namespace std 00043 { 00044 00045 template<typename _Tp> 00046 class slice_array 00047 { 00048 public: 00049 typedef _Tp value_type; 00050 00051 // This constructor is implemented since we need to return a value. 00052 slice_array (const slice_array&); 00053 00054 // This operator must be public. See DR-253. 00055 slice_array& operator= (const slice_array&); 00056 00057 void operator= (const valarray<_Tp>&) const; 00058 void operator*= (const valarray<_Tp>&) const; 00059 void operator/= (const valarray<_Tp>&) const; 00060 void operator%= (const valarray<_Tp>&) const; 00061 void operator+= (const valarray<_Tp>&) const; 00062 void operator-= (const valarray<_Tp>&) const; 00063 void operator^= (const valarray<_Tp>&) const; 00064 void operator&= (const valarray<_Tp>&) const; 00065 void operator|= (const valarray<_Tp>&) const; 00066 void operator<<= (const valarray<_Tp>&) const; 00067 void operator>>= (const valarray<_Tp>&) const; 00068 void operator= (const _Tp &); 00069 // ~slice_array (); 00070 00071 template<class _Dom> 00072 void operator= (const _Expr<_Dom,_Tp>&) const; 00073 template<class _Dom> 00074 void operator*= (const _Expr<_Dom,_Tp>&) const; 00075 template<class _Dom> 00076 void operator/= (const _Expr<_Dom,_Tp>&) const; 00077 template<class _Dom> 00078 void operator%= (const _Expr<_Dom,_Tp>&) const; 00079 template<class _Dom> 00080 void operator+= (const _Expr<_Dom,_Tp>&) const; 00081 template<class _Dom> 00082 void operator-= (const _Expr<_Dom,_Tp>&) const; 00083 template<class _Dom> 00084 void operator^= (const _Expr<_Dom,_Tp>&) const; 00085 template<class _Dom> 00086 void operator&= (const _Expr<_Dom,_Tp>&) const; 00087 template<class _Dom> 00088 void operator|= (const _Expr<_Dom,_Tp>&) const; 00089 template<class _Dom> 00090 void operator<<= (const _Expr<_Dom,_Tp>&) const; 00091 template<class _Dom> 00092 void operator>>= (const _Expr<_Dom,_Tp>&) const; 00093 00094 private: 00095 friend class valarray<_Tp>; 00096 slice_array(_Array<_Tp>, const slice&); 00097 00098 const size_t _M_sz; 00099 const size_t _M_stride; 00100 const _Array<_Tp> _M_array; 00101 00102 // not implemented 00103 slice_array (); 00104 }; 00105 00106 template<typename _Tp> 00107 inline slice_array<_Tp>::slice_array (_Array<_Tp> __a, const slice& __s) 00108 : _M_sz (__s.size ()), _M_stride (__s.stride ()), 00109 _M_array (__a.begin () + __s.start ()) {} 00110 00111 00112 template<typename _Tp> 00113 inline slice_array<_Tp>::slice_array(const slice_array<_Tp>& a) 00114 : _M_sz(a._M_sz), _M_stride(a._M_stride), _M_array(a._M_array) {} 00115 00116 // template<typename _Tp> 00117 // inline slice_array<_Tp>::~slice_array () {} 00118 00119 template<typename _Tp> 00120 inline slice_array<_Tp>& 00121 slice_array<_Tp>::operator=(const slice_array<_Tp>& __a) 00122 { 00123 __valarray_copy(__a._M_array, __a._M_sz, __a._M_stride, 00124 _M_array, _M_stride); 00125 return *this; 00126 } 00127 00128 00129 template<typename _Tp> 00130 inline void 00131 slice_array<_Tp>::operator= (const _Tp& __t) 00132 { __valarray_fill (_M_array, _M_sz, _M_stride, __t); } 00133 00134 template<typename _Tp> 00135 inline void 00136 slice_array<_Tp>::operator= (const valarray<_Tp>& __v) const 00137 { __valarray_copy (_Array<_Tp> (__v), _M_array, _M_sz, _M_stride); } 00138 00139 template<typename _Tp> 00140 template<class _Dom> 00141 inline void 00142 slice_array<_Tp>::operator= (const _Expr<_Dom,_Tp>& __e) const 00143 { __valarray_copy (__e, _M_sz, _M_array, _M_stride); } 00144 00145 #undef _DEFINE_VALARRAY_OPERATOR 00146 #define _DEFINE_VALARRAY_OPERATOR(op, name) \ 00147 template<typename _Tp> \ 00148 inline void \ 00149 slice_array<_Tp>::operator op##= (const valarray<_Tp>& __v) const \ 00150 { \ 00151 _Array_augmented_##name (_M_array, _M_sz, _M_stride, _Array<_Tp> (__v));\ 00152 } \ 00153 \ 00154 template<typename _Tp> template<class _Dom> \ 00155 inline void \ 00156 slice_array<_Tp>::operator op##= (const _Expr<_Dom,_Tp>& __e) const \ 00157 { \ 00158 _Array_augmented_##name (_M_array, _M_stride, __e, _M_sz); \ 00159 } 00160 00161 00162 _DEFINE_VALARRAY_OPERATOR(*, multiplies) 00163 _DEFINE_VALARRAY_OPERATOR(/, divides) 00164 _DEFINE_VALARRAY_OPERATOR(%, modulus) 00165 _DEFINE_VALARRAY_OPERATOR(+, plus) 00166 _DEFINE_VALARRAY_OPERATOR(-, minus) 00167 _DEFINE_VALARRAY_OPERATOR(^, xor) 00168 _DEFINE_VALARRAY_OPERATOR(&, and) 00169 _DEFINE_VALARRAY_OPERATOR(|, or) 00170 _DEFINE_VALARRAY_OPERATOR(<<, shift_left) 00171 _DEFINE_VALARRAY_OPERATOR(>>, shift_right) 00172 00173 #undef _DEFINE_VALARRAY_OPERATOR 00174 00175 } // std:: 00176 00177 #endif /* _CPP_BITS_SLICE_ARRAY_H */ 00178 00179 // Local Variables: 00180 // mode:c++ 00181 // End:

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