# 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: