# gslice_array.h

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    00001 // The template and inlines for the -*- C++ -*- gslice_array class.
    00002
    00003 // Copyright (C) 1997, 1998, 1999, 2000, 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_GSLICE_ARRAY
    00038 #define _CPP_BITS_GSLICE_ARRAY 1
    00039
    00040 #pragma GCC system_header
    00041
    00042 namespace std {
    00043
    00044   template<typename _Tp>
    00045     class gslice_array
    00046     {
    00047     public:
    00048       typedef _Tp value_type;
    00049
    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 valarray<_Tp>&) const;
    00061       void operator=(const _Tp&) const;
    00062
    00063       template<class _Dom>
    00064         void operator=(const _Expr<_Dom,_Tp>&) const;
    00065       template<class _Dom>
    00066         void operator*=(const _Expr<_Dom,_Tp>&) const;
    00067       template<class _Dom>
    00068         void operator/=(const _Expr<_Dom,_Tp>&) const;
    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
    00086     private:
    00087       _Array<_Tp>    _M_array;
    00088       const valarray<size_t>& _M_index;
    00089
    00090       friend class valarray<_Tp>;
    00091
    00092       gslice_array(_Array<_Tp>, const valarray<size_t>&);
    00093
    00094       // this constructor needs to be implemented.
    00095       gslice_array(const gslice_array&);
    00096
    00097       // not implemented
    00098       gslice_array();
    00099       gslice_array& operator= (const gslice_array&);
    00100     };
    00101
    00102   template<typename _Tp>
    00103     inline
    00104     gslice_array<_Tp>::gslice_array(_Array<_Tp> __a,
    00105                     const valarray<size_t>& __i)
    00106       : _M_array(__a), _M_index(__i) {}
    00107
    00108
    00109   template<typename _Tp>
    00110     inline
    00111     gslice_array<_Tp>::gslice_array(const gslice_array<_Tp>& __a)
    00112       : _M_array(__a._M_array), _M_index(__a._M_index) {}
    00113
    00114
    00115   template<typename _Tp>
    00116     inline void
    00117     gslice_array<_Tp>::operator=(const _Tp& __t) const
    00118     {
    00119       __valarray_fill(_M_array, _Array<size_t>(_M_index),
    00120               _M_index.size(), __t);
    00121     }
    00122
    00123   template<typename _Tp>
    00124     inline void
    00125     gslice_array<_Tp>::operator=(const valarray<_Tp>& __v) const
    00126     {
    00127       __valarray_copy(_Array<_Tp>(__v), __v.size(),
    00128               _M_array, _Array<size_t>(_M_index));
    00129     }
    00130
    00131   template<typename _Tp>
    00132     template<class _Dom>
    00133       inline void
    00134       gslice_array<_Tp>::operator=(const _Expr<_Dom, _Tp>& __e) const
    00135       {
    00136     __valarray_copy (__e, _M_index.size(), _M_array,
    00137              _Array<size_t>(_M_index));
    00138       }
    00139
    00140 #undef _DEFINE_VALARRAY_OPERATOR
    00141 #define _DEFINE_VALARRAY_OPERATOR(_Op, _Name)               \
    00142   template<typename _Tp>                        \
    00143     inline void                             \
    00144     gslice_array<_Tp>::operator _Op##=(const valarray<_Tp>& __v) const  \
    00145     {                                   \
    00146       _Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index),  \
    00147                   _Array<_Tp>(__v), __v.size());        \
    00148     }                                   \
    00149                                     \
    00150   template<typename _Tp>                                                \
    00151     template<class _Dom>                                    \
    00152       inline void                           \
    00153       gslice_array<_Tp>::operator _Op##= (const _Expr<_Dom, _Tp>& __e) const\
    00154       {                                 \
    00155     _Array_augmented_##_Name(_M_array, _Array<size_t>(_M_index), __e,\
    00156                  _M_index.size());          \
    00157       }
    00158
    00159 _DEFINE_VALARRAY_OPERATOR(*, __multiplies)
    00160 _DEFINE_VALARRAY_OPERATOR(/, __divides)
    00161 _DEFINE_VALARRAY_OPERATOR(%, __modulus)
    00162 _DEFINE_VALARRAY_OPERATOR(+, __plus)
    00163 _DEFINE_VALARRAY_OPERATOR(-, __minus)
    00164 _DEFINE_VALARRAY_OPERATOR(^, __bitwise_xor)
    00165 _DEFINE_VALARRAY_OPERATOR(&, __bitwise_and)
    00166 _DEFINE_VALARRAY_OPERATOR(|, __bitwise_or)
    00167 _DEFINE_VALARRAY_OPERATOR(<<, __shift_left)
    00168 _DEFINE_VALARRAY_OPERATOR(>>, __shift_right)
    00169
    00170 #undef _DEFINE_VALARRAY_OPERATOR
    00171
    00172 } // std::
    00173
    00174 #endif /* _CPP_BITS_GSLICE_ARRAY */
    00175
    00176 // Local Variables:
    00177 // mode:c++
    00178 // End: