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