1 // The template and inlines for the -*- C++ -*- slice_array class. 2 3 // Copyright (C) 1997-1999 Cygnus Solutions 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 #ifndef __SLICE_ARRAY__ 33 #define __SLICE_ARRAY__ 34 35 extern "C++" { 36 37 template<typename _T> 38 class slice_array 39 { 40 public: 41 typedef _T value_type; 42 43 void operator= (const valarray<_T>&) const; 44 void operator*= (const valarray<_T>&) const; 45 void operator/= (const valarray<_T>&) const; 46 void operator%= (const valarray<_T>&) const; 47 void operator+= (const valarray<_T>&) const; 48 void operator-= (const valarray<_T>&) const; 49 void operator^= (const valarray<_T>&) const; 50 void operator&= (const valarray<_T>&) const; 51 void operator|= (const valarray<_T>&) const; 52 void operator<<= (const valarray<_T>&) const; 53 void operator>>= (const valarray<_T>&) const; 54 void operator= (const _T &); 55 56 template<class _Dom> 57 void operator= (const _Expr<_Dom,_T>&) const; 58 template<class _Dom> 59 void operator*= (const _Expr<_Dom,_T>&) const; 60 template<class _Dom> 61 void operator/= (const _Expr<_Dom,_T>&) const; 62 template<class _Dom> 63 void operator%= (const _Expr<_Dom,_T>&) const; 64 template<class _Dom> 65 void operator+= (const _Expr<_Dom,_T>&) const; 66 template<class _Dom> 67 void operator-= (const _Expr<_Dom,_T>&) const; 68 template<class _Dom> 69 void operator^= (const _Expr<_Dom,_T>&) const; 70 template<class _Dom> 71 void operator&= (const _Expr<_Dom,_T>&) const; 72 template<class _Dom> 73 void operator|= (const _Expr<_Dom,_T>&) const; 74 template<class _Dom> 75 void operator<<= (const _Expr<_Dom,_T>&) const; 76 template<class _Dom> 77 void operator>>= (const _Expr<_Dom,_T>&) const; 78 79 private: 80 friend class valarray<_T>; 81 slice_array(_Array<_T>, const slice&); 82 83 const size_t _M_sz; 84 const size_t _M_stride; 85 const _Array<_T> _M_array; 86 87 // this constructor is implemented since we need to return a value. 88 slice_array (const slice_array&); 89 90 // not implemented 91 slice_array (); 92 slice_array& operator= (const slice_array&); 93 }; 94 95 template<typename _T> 96 inline slice_array<_T>::slice_array (_Array<_T> __a, const slice& __s) 97 : _M_sz (__s.size ()), _M_stride (__s.stride ()), 98 _M_array (__a.begin () + __s.start ()) {} 99 100 template<typename _Tp> 101 inline slice_array<_Tp>::slice_array(const slice_array<_Tp>& a) 102 : _M_sz(a._M_sz), _M_stride(a._M_stride), _M_array(a._M_array) {} 103 104 template<typename _T> 105 inline void 106 slice_array<_T>::operator= (const _T& __t) 107 { __valarray_fill (_M_array, _M_sz, _M_stride, __t); } 108 109 template<typename _T> 110 inline void 111 slice_array<_T>::operator= (const valarray<_T>& __v) const 112 { __valarray_copy (_Array<_T> (__v), _M_array, _M_sz, _M_stride); } 113 114 template<typename _T> 115 template<class _Dom> 116 inline void 117 slice_array<_T>::operator= (const _Expr<_Dom,_T>& __e) const 118 { __valarray_copy (__e, _M_sz, _M_array, _M_stride); } 119 120 #undef _DEFINE_VALARRAY_OPERATOR 121 #define _DEFINE_VALARRAY_OPERATOR(op, name) \ 122 template<typename _T> \ 123 inline void \ 124 slice_array<_T>::operator##op##= (const valarray<_T>& __v) const \ 125 { \ 126 _Array_augmented_##name (_M_array, _M_sz, _M_stride, _Array<_T> (__v));\ 127 } \ 128 \ 129 template<typename _T> template<class _Dom> \ 130 inline void \ 131 slice_array<_T>::operator##op##= (const _Expr<_Dom,_T>& __e) const \ 132 { \ 133 _Array_augmented_##name (_M_array, _M_stride, __e, _M_sz); \ 134 } 135 136 137 _DEFINE_VALARRAY_OPERATOR(*, multiplies) 138 _DEFINE_VALARRAY_OPERATOR(/, divides) 139 _DEFINE_VALARRAY_OPERATOR(%, modulus) 140 _DEFINE_VALARRAY_OPERATOR(+, plus) 141 _DEFINE_VALARRAY_OPERATOR(-, minus) 142 _DEFINE_VALARRAY_OPERATOR(^, xor) 143 _DEFINE_VALARRAY_OPERATOR(&, and) 144 _DEFINE_VALARRAY_OPERATOR(|, or) 145 _DEFINE_VALARRAY_OPERATOR(<<, shift_left) 146 _DEFINE_VALARRAY_OPERATOR(>>, shift_right) 147 148 #undef _DEFINE_VALARRAY_OPERATOR 149 150 } // extern "C++" 151 152 #endif // __SLICE_ARRAY__ 153 154 // Local Variables: 155 // mode:c++ 156 // End: 157