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gcc/libstdc++-v3/include/bits/slice_array.h
Gabriel Dos Reis 7c301abf46 slice_array_assignment.cc (main): New test. 
* testsuite/26_numerics/slice_array_assignment.cc (main): New test.

        * include/bits/slice_array.h (slice_array<>::operator=): Make
        public and implement.
        (slice_array<>::slice_array): Make copy-constructor public.

        * include/bits/valarray_array.h (__valarray_copy): Add another
        overload to copy between strided arrays.

From-SVN: r43352
2001-06-13 22:16:24 +00:00

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// The template and inlines for the -*- C++ -*- slice_array class.
// Copyright (C) 1997-1999, 2000, 2001 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@DPTMaths.ENS-Cachan.Fr>
#ifndef _CPP_BITS_SLICE_ARRAY_H
#define _CPP_BITS_SLICE_ARRAY_H 1
#pragma GCC system_header
namespace std
{
template<typename _Tp>
class slice_array
{
public:
typedef _Tp value_type;
// This constructor is implemented since we need to return a value.
slice_array (const slice_array&);
// This operator must be public. See DR-253.
slice_array& operator= (const slice_array&);
void operator= (const valarray<_Tp>&) const;
void operator*= (const valarray<_Tp>&) const;
void operator/= (const valarray<_Tp>&) const;
void operator%= (const valarray<_Tp>&) const;
void operator+= (const valarray<_Tp>&) const;
void operator-= (const valarray<_Tp>&) const;
void operator^= (const valarray<_Tp>&) const;
void operator&= (const valarray<_Tp>&) const;
void operator|= (const valarray<_Tp>&) const;
void operator<<= (const valarray<_Tp>&) const;
void operator>>= (const valarray<_Tp>&) const;
void operator= (const _Tp &);
// ~slice_array ();
template<class _Dom>
void operator= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator*= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator/= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator%= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator+= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator-= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator^= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator&= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator|= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator<<= (const _Expr<_Dom,_Tp>&) const;
template<class _Dom>
void operator>>= (const _Expr<_Dom,_Tp>&) const;
private:
friend class valarray<_Tp>;
slice_array(_Array<_Tp>, const slice&);
const size_t _M_sz;
const size_t _M_stride;
const _Array<_Tp> _M_array;
// not implemented
slice_array ();
};
template<typename _Tp>
inline slice_array<_Tp>::slice_array (_Array<_Tp> __a, const slice& __s)
: _M_sz (__s.size ()), _M_stride (__s.stride ()),
_M_array (__a.begin () + __s.start ()) {}
template<typename _Tp>
inline slice_array<_Tp>::slice_array(const slice_array<_Tp>& a)
: _M_sz(a._M_sz), _M_stride(a._M_stride), _M_array(a._M_array) {}
// template<typename _Tp>
// inline slice_array<_Tp>::~slice_array () {}
template<typename _Tp>
inline slice_array<_Tp>&
slice_array<_Tp>::operator=(const slice_array<_Tp>& __a)
{
__valarray_copy(_M_array, _M_sz, _M_stride, __a._M_array, __a._M_stride);
return *this;
}
template<typename _Tp>
inline void
slice_array<_Tp>::operator= (const _Tp& __t)
{ __valarray_fill (_M_array, _M_sz, _M_stride, __t); }
template<typename _Tp>
inline void
slice_array<_Tp>::operator= (const valarray<_Tp>& __v) const
{ __valarray_copy (_Array<_Tp> (__v), _M_array, _M_sz, _M_stride); }
template<typename _Tp>
template<class _Dom>
inline void
slice_array<_Tp>::operator= (const _Expr<_Dom,_Tp>& __e) const
{ __valarray_copy (__e, _M_sz, _M_array, _M_stride); }
#undef _DEFINE_VALARRAY_OPERATOR
#define _DEFINE_VALARRAY_OPERATOR(op, name) \
template<typename _Tp> \
inline void \
slice_array<_Tp>::operator op##= (const valarray<_Tp>& __v) const \
{ \
_Array_augmented_##name (_M_array, _M_sz, _M_stride, _Array<_Tp> (__v));\
} \
\
template<typename _Tp> template<class _Dom> \
inline void \
slice_array<_Tp>::operator op##= (const _Expr<_Dom,_Tp>& __e) const \
{ \
_Array_augmented_##name (_M_array, _M_stride, __e, _M_sz); \
}
_DEFINE_VALARRAY_OPERATOR(*, multiplies)
_DEFINE_VALARRAY_OPERATOR(/, divides)
_DEFINE_VALARRAY_OPERATOR(%, modulus)
_DEFINE_VALARRAY_OPERATOR(+, plus)
_DEFINE_VALARRAY_OPERATOR(-, minus)
_DEFINE_VALARRAY_OPERATOR(^, xor)
_DEFINE_VALARRAY_OPERATOR(&, and)
_DEFINE_VALARRAY_OPERATOR(|, or)
_DEFINE_VALARRAY_OPERATOR(<<, shift_left)
_DEFINE_VALARRAY_OPERATOR(>>, shift_right)
#undef _DEFINE_VALARRAY_OPERATOR
} // std::
#endif /* _CPP_BITS_SLICE_ARRAY_H */
// Local Variables:
// mode:c++
// End:
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