libstdc++-v3 Source: mask_array.h Source File

00001 // The template and inlines for the -*- C++ -*- mask_array class.
00002 
00003 // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004
00004 //  Free Software Foundation, Inc.
00005 //
00006 // This file is part of the GNU ISO C++ Library.  This library is free
00007 // software; you can redistribute it and/or modify it under the
00008 // terms of the GNU General Public License as published by the
00009 // Free Software Foundation; either version 2, or (at your option)
00010 // any later version.
00011 
00012 // This library is distributed in the hope that it will be useful,
00013 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00014 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015 // GNU General Public License for more details.
00016 
00017 // You should have received a copy of the GNU General Public License along
00018 // with this library; see the file COPYING.  If not, write to the Free
00019 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
00020 // USA.
00021 
00022 // As a special exception, you may use this file as part of a free software
00023 // library without restriction.  Specifically, if other files instantiate
00024 // templates or use macros or inline functions from this file, or you compile
00025 // this file and link it with other files to produce an executable, this
00026 // file does not by itself cause the resulting executable to be covered by
00027 // the GNU General Public License.  This exception does not however
00028 // invalidate any other reasons why the executable file might be covered by
00029 // the GNU General Public License.
00030 
00031 // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
00032 
00033 /** @file mask_array.h
00034  *  This is an internal header file, included by other library headers.
00035  *  You should not attempt to use it directly.
00036  */
00037 
00038 #ifndef _CPP_BITS_MASK_ARRAY_H
00039 #define _CPP_BITS_MASK_ARRAY_H 1
00040 
00041 #pragma GCC system_header
00042 
00043 namespace std {
00044 
00045   template <class _Tp> 
00046     class mask_array
00047     { 
00048     public:
00049       typedef _Tp value_type;
00050     
00051       mask_array (const mask_array&);
00052       mask_array& operator=(const mask_array&);
00053 
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 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 _Tp&) const;
00066     
00067         //        ~mask_array ();
00068         
00069       template<class _Dom>
00070         void operator=(const _Expr<_Dom,_Tp>&) const;
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 
00092     private:
00093       mask_array(_Array<_Tp>, size_t, _Array<bool>);
00094       friend class valarray<_Tp>;
00095         
00096       const size_t       _M_sz;
00097       const _Array<bool> _M_mask;
00098       const _Array<_Tp>   _M_array;
00099       
00100       // not implemented
00101       mask_array();
00102     };
00103 
00104 
00105   template<typename _Tp>
00106     inline mask_array<_Tp>::mask_array(const mask_array<_Tp>& a)
00107       : _M_sz(a._M_sz), _M_mask(a._M_mask), _M_array(a._M_array) {}
00108 
00109   template<typename _Tp>
00110     inline 
00111     mask_array<_Tp>::mask_array(_Array<_Tp> __a, size_t __s, _Array<bool> __m)
00112       : _M_sz(__s), _M_mask(__m), _M_array(__a) {}
00113 
00114   template<typename _Tp>
00115     inline mask_array<_Tp>&
00116     mask_array<_Tp>::operator=(const mask_array<_Tp>& __a)
00117     {
00118       __valarray_copy(__a._M_array, __a._M_mask,
00119               _M_sz, _M_array, _M_mask);
00120       return *this;
00121     }
00122     
00123   template<typename _Tp>
00124     inline void
00125     mask_array<_Tp>::operator=(const _Tp& __t) const
00126     { __valarray_fill(_M_array, _M_sz, _M_mask, __t); }
00127     
00128   template<typename _Tp>
00129     inline void
00130     mask_array<_Tp>::operator=(const valarray<_Tp>& __v) const
00131     { __valarray_copy(_Array<_Tp>(__v), __v.size(), _M_array, _M_mask); }
00132 
00133   template<typename _Tp>
00134     template<class _Ex>
00135       inline void
00136       mask_array<_Tp>::operator=(const _Expr<_Ex, _Tp>& __e) const
00137       { __valarray_copy(__e, __e.size(), _M_array, _M_mask); }
00138 
00139 #undef _DEFINE_VALARRAY_OPERATOR
00140 #define _DEFINE_VALARRAY_OPERATOR(_Op, _Name)               \
00141   template<typename _Tp>                        \
00142     inline void                             \
00143     mask_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const    \
00144     {                                   \
00145       _Array_augmented_##_Name(_M_array, _M_mask,           \
00146                    _Array<_Tp>(__v), __v.size());       \
00147     }                                   \
00148                                     \
00149   template<typename _Tp>                                                \
00150     template<class _Dom>                                    \
00151       inline void                           \
00152       mask_array<_Tp>::operator _Op##=(const _Expr<_Dom, _Tp>& __e) const\
00153       {                                 \
00154     _Array_augmented_##_Name(_M_array, _M_mask, __e, __e.size());   \
00155       }
00156 
00157 _DEFINE_VALARRAY_OPERATOR(*, __multiplies)
00158 _DEFINE_VALARRAY_OPERATOR(/, __divides)
00159 _DEFINE_VALARRAY_OPERATOR(%, __modulus)
00160 _DEFINE_VALARRAY_OPERATOR(+, __plus)
00161 _DEFINE_VALARRAY_OPERATOR(-, __minus)
00162 _DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor)
00163 _DEFINE_VALARRAY_OPERATOR(&, __bitwise_and)
00164 _DEFINE_VALARRAY_OPERATOR(|, __bitwise_or)
00165 _DEFINE_VALARRAY_OPERATOR(<<, __shift_left)
00166 _DEFINE_VALARRAY_OPERATOR(>>, __shift_right)
00167 
00168 #undef _DEFINE_VALARRAY_OPERATOR    
00169     
00170 } // std::
00171 
00172 #endif /* _CPP_BITS_MASK_ARRAY_H */
00173 
00174 // Local Variables:
00175 // mode:c++
00176 // End: