mask_array.h

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00001 // The template and inlines for the -*- C++ -*- mask_array class. 00002 00003 // Copyright (C) 1997-2001 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_MASK_ARRAY_H 00038 #define _CPP_BITS_MASK_ARRAY_H 1 00039 00040 #pragma GCC system_header 00041 00042 namespace std { 00043 00044 template <class _Tp> class mask_array 00045 { 00046 public: 00047 typedef _Tp value_type; 00048 00049 void operator= (const valarray<_Tp>&) const; 00050 void operator*= (const valarray<_Tp>&) const; 00051 void operator/= (const valarray<_Tp>&) const; 00052 void operator%= (const valarray<_Tp>&) const; 00053 void operator+= (const valarray<_Tp>&) const; 00054 void operator-= (const valarray<_Tp>&) const; 00055 void operator^= (const valarray<_Tp>&) const; 00056 void operator&= (const valarray<_Tp>&) const; 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 _Tp&); 00061 00062 // ~mask_array (); 00063 00064 template<class _Dom> 00065 void operator= (const _Expr<_Dom,_Tp>&) const; 00066 template<class _Dom> 00067 void operator*= (const _Expr<_Dom,_Tp>&) const; 00068 template<class _Dom> 00069 void operator/= (const _Expr<_Dom,_Tp>&) const; 00070 template<class _Dom> 00071 void operator%= (const _Expr<_Dom,_Tp>&) const; 00072 template<class _Dom> 00073 void operator+= (const _Expr<_Dom,_Tp>&) const; 00074 template<class _Dom> 00075 void operator-= (const _Expr<_Dom,_Tp>&) const; 00076 template<class _Dom> 00077 void operator^= (const _Expr<_Dom,_Tp>&) const; 00078 template<class _Dom> 00079 void operator&= (const _Expr<_Dom,_Tp>&) const; 00080 template<class _Dom> 00081 void operator|= (const _Expr<_Dom,_Tp>&) const; 00082 template<class _Dom> 00083 void operator<<=(const _Expr<_Dom,_Tp>&) const; 00084 template<class _Dom> 00085 void operator>>=(const _Expr<_Dom,_Tp>&) const; 00086 00087 private: 00088 mask_array (_Array<_Tp>, size_t, _Array<bool>); 00089 friend class valarray<_Tp>; 00090 00091 const size_t _M_sz; 00092 const _Array<bool> _M_mask; 00093 const _Array<_Tp> _M_array; 00094 00095 mask_array (const mask_array&); 00096 00097 // not implemented 00098 mask_array (); 00099 mask_array& operator= (const mask_array&); 00100 }; 00101 00102 00103 template<typename _Tp> 00104 inline mask_array<_Tp>::mask_array (const mask_array<_Tp>& a) 00105 : _M_sz (a._M_sz), _M_mask (a._M_mask), _M_array (a._M_array) {} 00106 00107 template<typename _Tp> 00108 inline 00109 mask_array<_Tp>::mask_array (_Array<_Tp> __a, size_t __s, _Array<bool> __m) 00110 : _M_sz (__s), _M_mask (__m), _M_array (__a) {} 00111 00112 // template<typename _Tp> 00113 // inline mask_array<_Tp>::~mask_array () {} 00114 00115 template<typename _Tp> 00116 inline void 00117 mask_array<_Tp>::operator= (const _Tp& __t) 00118 { __valarray_fill (_M_array, _M_sz, _M_mask, __t); } 00119 00120 template<typename _Tp> 00121 inline void 00122 mask_array<_Tp>::operator= (const valarray<_Tp>& __v) const 00123 { __valarray_copy (_Array<_Tp> (__v), __v.size (), _M_array, _M_mask); } 00124 00125 template<typename _Tp> 00126 template<class E> 00127 inline void 00128 mask_array<_Tp>::operator= (const _Expr<E, _Tp>& __e) const 00129 { __valarray_copy (__e, __e.size (), _M_array, _M_mask); } 00130 00131 #undef _DEFINE_VALARRAY_OPERATOR 00132 #define _DEFINE_VALARRAY_OPERATOR(op, name) \ 00133 template<typename _Tp> \ 00134 inline void \ 00135 mask_array<_Tp>::operator op##= (const valarray<_Tp>& __v) const \ 00136 { \ 00137 _Array_augmented_##name (_M_array, _M_mask, \ 00138 _Array<_Tp> (__v), __v.size ()); \ 00139 } \ 00140 \ 00141 template<typename _Tp> template<class E> \ 00142 inline void \ 00143 mask_array<_Tp>::operator op##= (const _Expr<E, _Tp>& __e) const \ 00144 { \ 00145 _Array_augmented_##name (_M_array, _M_mask, __e, __e.size ()); \ 00146 } 00147 00148 _DEFINE_VALARRAY_OPERATOR(*, multiplies) 00149 _DEFINE_VALARRAY_OPERATOR(/, divides) 00150 _DEFINE_VALARRAY_OPERATOR(%, modulus) 00151 _DEFINE_VALARRAY_OPERATOR(+, plus) 00152 _DEFINE_VALARRAY_OPERATOR(-, minus) 00153 _DEFINE_VALARRAY_OPERATOR(^, xor) 00154 _DEFINE_VALARRAY_OPERATOR(&, and) 00155 _DEFINE_VALARRAY_OPERATOR(|, or) 00156 _DEFINE_VALARRAY_OPERATOR(<<, shift_left) 00157 _DEFINE_VALARRAY_OPERATOR(>>, shift_right) 00158 00159 #undef _DEFINE_VALARRAY_OPERATOR 00160 00161 } // std:: 00162 00163 #endif /* _CPP_BITS_MASK_ARRAY_H */ 00164 00165 // Local Variables: 00166 // mode:c++ 00167 // End:

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