557 lines
22 KiB
C++
557 lines
22 KiB
C++
// The template and inlines for the -*- C++ -*- internal _Meta class.
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// Copyright (C) 1997-2020 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/valarray_after.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{valarray}
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*/
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// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@cmla.ens-cachan.fr>
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#ifndef _VALARRAY_AFTER_H
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#define _VALARRAY_AFTER_H 1
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#pragma GCC system_header
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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namespace __detail
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{
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//
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// gslice_array closure.
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//
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template<class _Dom>
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class _GBase
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{
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public:
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typedef typename _Dom::value_type value_type;
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_GBase (const _Dom& __e, const valarray<size_t>& __i)
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: _M_expr (__e), _M_index(__i) {}
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value_type
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operator[] (size_t __i) const
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{ return _M_expr[_M_index[__i]]; }
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size_t
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size () const
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{ return _M_index.size(); }
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private:
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typename _ValArrayRef<_Dom>::__type _M_expr;
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const valarray<size_t>& _M_index;
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};
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template<typename _Tp>
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class _GBase<_Array<_Tp> >
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{
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public:
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typedef _Tp value_type;
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_GBase (_Array<_Tp> __a, const valarray<size_t>& __i)
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: _M_array (__a), _M_index(__i) {}
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value_type
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operator[] (size_t __i) const
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{ return _M_array._M_data[_M_index[__i]]; }
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size_t
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size () const
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{ return _M_index.size(); }
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private:
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const _Array<_Tp> _M_array;
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const valarray<size_t>& _M_index;
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};
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template<class _Dom>
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struct _GClos<_Expr, _Dom>
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: _GBase<_Dom>
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{
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typedef _GBase<_Dom> _Base;
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typedef typename _Base::value_type value_type;
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_GClos (const _Dom& __e, const valarray<size_t>& __i)
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: _Base (__e, __i) {}
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};
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template<typename _Tp>
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struct _GClos<_ValArray, _Tp>
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: _GBase<_Array<_Tp> >
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{
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typedef _GBase<_Array<_Tp> > _Base;
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typedef typename _Base::value_type value_type;
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_GClos (_Array<_Tp> __a, const valarray<size_t>& __i)
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: _Base (__a, __i) {}
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};
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//
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// indirect_array closure
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//
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template<class _Dom>
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class _IBase
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{
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public:
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typedef typename _Dom::value_type value_type;
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_IBase (const _Dom& __e, const valarray<size_t>& __i)
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: _M_expr (__e), _M_index (__i) {}
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value_type
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operator[] (size_t __i) const
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{ return _M_expr[_M_index[__i]]; }
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size_t
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size() const
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{ return _M_index.size(); }
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private:
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typename _ValArrayRef<_Dom>::__type _M_expr;
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const valarray<size_t>& _M_index;
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};
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template<class _Dom>
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struct _IClos<_Expr, _Dom>
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: _IBase<_Dom>
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{
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typedef _IBase<_Dom> _Base;
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typedef typename _Base::value_type value_type;
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_IClos (const _Dom& __e, const valarray<size_t>& __i)
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: _Base (__e, __i) {}
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};
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template<typename _Tp>
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struct _IClos<_ValArray, _Tp>
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: _IBase<valarray<_Tp> >
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{
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typedef _IBase<valarray<_Tp> > _Base;
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typedef _Tp value_type;
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_IClos (const valarray<_Tp>& __a, const valarray<size_t>& __i)
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: _Base (__a, __i) {}
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};
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} // namespace __detail
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//
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// class _Expr
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//
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template<class _Clos, typename _Tp>
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class _Expr
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{
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public:
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typedef _Tp value_type;
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_Expr(const _Clos&);
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const _Clos& operator()() const;
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value_type operator[](size_t) const;
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valarray<value_type> operator[](slice) const;
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valarray<value_type> operator[](const gslice&) const;
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valarray<value_type> operator[](const valarray<bool>&) const;
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valarray<value_type> operator[](const valarray<size_t>&) const;
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_Expr<_UnClos<__unary_plus, std::_Expr, _Clos>, value_type>
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operator+() const;
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_Expr<_UnClos<__negate, std::_Expr, _Clos>, value_type>
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operator-() const;
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_Expr<_UnClos<__bitwise_not, std::_Expr, _Clos>, value_type>
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operator~() const;
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_Expr<_UnClos<__logical_not, std::_Expr, _Clos>, bool>
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operator!() const;
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size_t size() const;
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value_type sum() const;
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valarray<value_type> shift(int) const;
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valarray<value_type> cshift(int) const;
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value_type min() const;
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value_type max() const;
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valarray<value_type> apply(value_type (*)(const value_type&)) const;
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valarray<value_type> apply(value_type (*)(value_type)) const;
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private:
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const _Clos _M_closure;
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};
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template<class _Clos, typename _Tp>
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inline
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_Expr<_Clos, _Tp>::_Expr(const _Clos& __c) : _M_closure(__c) {}
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template<class _Clos, typename _Tp>
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inline const _Clos&
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_Expr<_Clos, _Tp>::operator()() const
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{ return _M_closure; }
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template<class _Clos, typename _Tp>
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inline _Tp
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_Expr<_Clos, _Tp>::operator[](size_t __i) const
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{ return _M_closure[__i]; }
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::operator[](slice __s) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this)[__s];
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::operator[](const gslice& __gs) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this)[__gs];
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::operator[](const valarray<bool>& __m) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this)[__m];
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::operator[](const valarray<size_t>& __i) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this)[__i];
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline size_t
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_Expr<_Clos, _Tp>::size() const
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{ return _M_closure.size(); }
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::shift(int __n) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this).shift(__n);
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::cshift(int __n) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this).cshift(__n);
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::apply(_Tp __f(const _Tp&)) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this).apply(__f);
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return __v;
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}
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template<class _Clos, typename _Tp>
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inline valarray<_Tp>
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_Expr<_Clos, _Tp>::apply(_Tp __f(_Tp)) const
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{
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valarray<_Tp> __v = valarray<_Tp>(*this).apply(__f);
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return __v;
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}
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// XXX: replace this with a more robust summation algorithm.
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template<class _Clos, typename _Tp>
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inline _Tp
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_Expr<_Clos, _Tp>::sum() const
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{
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size_t __n = _M_closure.size();
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if (__n == 0)
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return _Tp();
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else
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{
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_Tp __s = _M_closure[--__n];
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while (__n != 0)
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__s += _M_closure[--__n];
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return __s;
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}
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}
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template<class _Clos, typename _Tp>
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inline _Tp
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_Expr<_Clos, _Tp>::min() const
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{ return __valarray_min(_M_closure); }
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template<class _Clos, typename _Tp>
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inline _Tp
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_Expr<_Clos, _Tp>::max() const
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{ return __valarray_max(_M_closure); }
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template<class _Dom, typename _Tp>
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inline _Expr<_UnClos<__logical_not, _Expr, _Dom>, bool>
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_Expr<_Dom, _Tp>::operator!() const
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{
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typedef _UnClos<__logical_not, std::_Expr, _Dom> _Closure;
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return _Expr<_Closure, bool>(_Closure(this->_M_closure));
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}
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#define _DEFINE_EXPR_UNARY_OPERATOR(_Op, _Name) \
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template<class _Dom, typename _Tp> \
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inline _Expr<_UnClos<_Name, std::_Expr, _Dom>, _Tp> \
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_Expr<_Dom, _Tp>::operator _Op() const \
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{ \
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typedef _UnClos<_Name, std::_Expr, _Dom> _Closure; \
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return _Expr<_Closure, _Tp>(_Closure(this->_M_closure)); \
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}
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_DEFINE_EXPR_UNARY_OPERATOR(+, __unary_plus)
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_DEFINE_EXPR_UNARY_OPERATOR(-, __negate)
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_DEFINE_EXPR_UNARY_OPERATOR(~, __bitwise_not)
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#undef _DEFINE_EXPR_UNARY_OPERATOR
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#define _DEFINE_EXPR_BINARY_OPERATOR(_Op, _Name) \
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template<class _Dom1, class _Dom2> \
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inline _Expr<_BinClos<_Name, _Expr, _Expr, _Dom1, _Dom2>, \
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typename __fun<_Name, typename _Dom1::value_type>::result_type> \
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operator _Op(const _Expr<_Dom1, typename _Dom1::value_type>& __v, \
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const _Expr<_Dom2, typename _Dom2::value_type>& __w) \
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{ \
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typedef typename _Dom1::value_type _Arg; \
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typedef typename __fun<_Name, _Arg>::result_type _Value; \
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typedef _BinClos<_Name, _Expr, _Expr, _Dom1, _Dom2> _Closure; \
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return _Expr<_Closure, _Value>(_Closure(__v(), __w())); \
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} \
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\
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template<class _Dom> \
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inline _Expr<_BinClos<_Name, _Expr, _Constant, _Dom, \
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typename _Dom::value_type>, \
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typename __fun<_Name, typename _Dom::value_type>::result_type> \
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operator _Op(const _Expr<_Dom, typename _Dom::value_type>& __v, \
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const typename _Dom::value_type& __t) \
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{ \
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typedef typename _Dom::value_type _Arg; \
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typedef typename __fun<_Name, _Arg>::result_type _Value; \
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typedef _BinClos<_Name, _Expr, _Constant, _Dom, _Arg> _Closure; \
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return _Expr<_Closure, _Value>(_Closure(__v(), __t)); \
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} \
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\
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template<class _Dom> \
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inline _Expr<_BinClos<_Name, _Constant, _Expr, \
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typename _Dom::value_type, _Dom>, \
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typename __fun<_Name, typename _Dom::value_type>::result_type> \
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operator _Op(const typename _Dom::value_type& __t, \
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const _Expr<_Dom, typename _Dom::value_type>& __v) \
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{ \
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typedef typename _Dom::value_type _Arg; \
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typedef typename __fun<_Name, _Arg>::result_type _Value; \
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typedef _BinClos<_Name, _Constant, _Expr, _Arg, _Dom> _Closure; \
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return _Expr<_Closure, _Value>(_Closure(__t, __v())); \
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} \
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\
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template<class _Dom> \
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inline _Expr<_BinClos<_Name, _Expr, _ValArray, \
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_Dom, typename _Dom::value_type>, \
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typename __fun<_Name, typename _Dom::value_type>::result_type> \
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operator _Op(const _Expr<_Dom,typename _Dom::value_type>& __e, \
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const valarray<typename _Dom::value_type>& __v) \
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{ \
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typedef typename _Dom::value_type _Arg; \
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typedef typename __fun<_Name, _Arg>::result_type _Value; \
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typedef _BinClos<_Name, _Expr, _ValArray, _Dom, _Arg> _Closure; \
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return _Expr<_Closure, _Value>(_Closure(__e(), __v)); \
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} \
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\
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template<class _Dom> \
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inline _Expr<_BinClos<_Name, _ValArray, _Expr, \
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typename _Dom::value_type, _Dom>, \
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typename __fun<_Name, typename _Dom::value_type>::result_type> \
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operator _Op(const valarray<typename _Dom::value_type>& __v, \
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const _Expr<_Dom, typename _Dom::value_type>& __e) \
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{ \
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typedef typename _Dom::value_type _Tp; \
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typedef typename __fun<_Name, _Tp>::result_type _Value; \
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typedef _BinClos<_Name, _ValArray, _Expr, _Tp, _Dom> _Closure; \
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return _Expr<_Closure, _Value>(_Closure(__v, __e ())); \
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}
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_DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
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_DEFINE_EXPR_BINARY_OPERATOR(-, __minus)
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_DEFINE_EXPR_BINARY_OPERATOR(*, __multiplies)
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_DEFINE_EXPR_BINARY_OPERATOR(/, __divides)
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_DEFINE_EXPR_BINARY_OPERATOR(%, __modulus)
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_DEFINE_EXPR_BINARY_OPERATOR(^, __bitwise_xor)
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_DEFINE_EXPR_BINARY_OPERATOR(&, __bitwise_and)
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_DEFINE_EXPR_BINARY_OPERATOR(|, __bitwise_or)
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_DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
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_DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
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_DEFINE_EXPR_BINARY_OPERATOR(&&, __logical_and)
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_DEFINE_EXPR_BINARY_OPERATOR(||, __logical_or)
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_DEFINE_EXPR_BINARY_OPERATOR(==, __equal_to)
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_DEFINE_EXPR_BINARY_OPERATOR(!=, __not_equal_to)
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_DEFINE_EXPR_BINARY_OPERATOR(<, __less)
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_DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
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_DEFINE_EXPR_BINARY_OPERATOR(<=, __less_equal)
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_DEFINE_EXPR_BINARY_OPERATOR(>=, __greater_equal)
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#undef _DEFINE_EXPR_BINARY_OPERATOR
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#define _DEFINE_EXPR_UNARY_FUNCTION(_Name, _UName) \
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template<class _Dom> \
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inline _Expr<_UnClos<_UName, _Expr, _Dom>, \
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typename _Dom::value_type> \
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_Name(const _Expr<_Dom, typename _Dom::value_type>& __e) \
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{ \
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typedef typename _Dom::value_type _Tp; \
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typedef _UnClos<_UName, _Expr, _Dom> _Closure; \
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return _Expr<_Closure, _Tp>(_Closure(__e())); \
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} \
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\
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template<typename _Tp> \
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inline _Expr<_UnClos<_UName, _ValArray, _Tp>, _Tp> \
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_Name(const valarray<_Tp>& __v) \
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{ \
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typedef _UnClos<_UName, _ValArray, _Tp> _Closure; \
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return _Expr<_Closure, _Tp>(_Closure(__v)); \
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}
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_DEFINE_EXPR_UNARY_FUNCTION(abs, _Abs)
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_DEFINE_EXPR_UNARY_FUNCTION(cos, _Cos)
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_DEFINE_EXPR_UNARY_FUNCTION(acos, _Acos)
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_DEFINE_EXPR_UNARY_FUNCTION(cosh, _Cosh)
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_DEFINE_EXPR_UNARY_FUNCTION(sin, _Sin)
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_DEFINE_EXPR_UNARY_FUNCTION(asin, _Asin)
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_DEFINE_EXPR_UNARY_FUNCTION(sinh, _Sinh)
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_DEFINE_EXPR_UNARY_FUNCTION(tan, _Tan)
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_DEFINE_EXPR_UNARY_FUNCTION(tanh, _Tanh)
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_DEFINE_EXPR_UNARY_FUNCTION(atan, _Atan)
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_DEFINE_EXPR_UNARY_FUNCTION(exp, _Exp)
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_DEFINE_EXPR_UNARY_FUNCTION(log, _Log)
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_DEFINE_EXPR_UNARY_FUNCTION(log10, _Log10)
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_DEFINE_EXPR_UNARY_FUNCTION(sqrt, _Sqrt)
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#undef _DEFINE_EXPR_UNARY_FUNCTION
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#define _DEFINE_EXPR_BINARY_FUNCTION(_Fun, _UFun) \
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template<class _Dom1, class _Dom2> \
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inline _Expr<_BinClos<_UFun, _Expr, _Expr, _Dom1, _Dom2>, \
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typename _Dom1::value_type> \
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_Fun(const _Expr<_Dom1, typename _Dom1::value_type>& __e1, \
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const _Expr<_Dom2, typename _Dom2::value_type>& __e2) \
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{ \
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typedef typename _Dom1::value_type _Tp; \
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typedef _BinClos<_UFun, _Expr, _Expr, _Dom1, _Dom2> _Closure; \
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return _Expr<_Closure, _Tp>(_Closure(__e1(), __e2())); \
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} \
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\
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template<class _Dom> \
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inline _Expr<_BinClos<_UFun, _Expr, _ValArray, _Dom, \
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typename _Dom::value_type>, \
|
|
typename _Dom::value_type> \
|
|
_Fun(const _Expr<_Dom, typename _Dom::value_type>& __e, \
|
|
const valarray<typename _Dom::value_type>& __v) \
|
|
{ \
|
|
typedef typename _Dom::value_type _Tp; \
|
|
typedef _BinClos<_UFun, _Expr, _ValArray, _Dom, _Tp> _Closure; \
|
|
return _Expr<_Closure, _Tp>(_Closure(__e(), __v)); \
|
|
} \
|
|
\
|
|
template<class _Dom> \
|
|
inline _Expr<_BinClos<_UFun, _ValArray, _Expr, \
|
|
typename _Dom::value_type, _Dom>, \
|
|
typename _Dom::value_type> \
|
|
_Fun(const valarray<typename _Dom::valarray>& __v, \
|
|
const _Expr<_Dom, typename _Dom::value_type>& __e) \
|
|
{ \
|
|
typedef typename _Dom::value_type _Tp; \
|
|
typedef _BinClos<_UFun, _ValArray, _Expr, _Tp, _Dom> _Closure; \
|
|
return _Expr<_Closure, _Tp>(_Closure(__v, __e())); \
|
|
} \
|
|
\
|
|
template<class _Dom> \
|
|
inline _Expr<_BinClos<_UFun, _Expr, _Constant, _Dom, \
|
|
typename _Dom::value_type>, \
|
|
typename _Dom::value_type> \
|
|
_Fun(const _Expr<_Dom, typename _Dom::value_type>& __e, \
|
|
const typename _Dom::value_type& __t) \
|
|
{ \
|
|
typedef typename _Dom::value_type _Tp; \
|
|
typedef _BinClos<_UFun, _Expr, _Constant, _Dom, _Tp> _Closure; \
|
|
return _Expr<_Closure, _Tp>(_Closure(__e(), __t)); \
|
|
} \
|
|
\
|
|
template<class _Dom> \
|
|
inline _Expr<_BinClos<_UFun, _Constant, _Expr, \
|
|
typename _Dom::value_type, _Dom>, \
|
|
typename _Dom::value_type> \
|
|
_Fun(const typename _Dom::value_type& __t, \
|
|
const _Expr<_Dom, typename _Dom::value_type>& __e) \
|
|
{ \
|
|
typedef typename _Dom::value_type _Tp; \
|
|
typedef _BinClos<_UFun, _Constant, _Expr, _Tp, _Dom> _Closure; \
|
|
return _Expr<_Closure, _Tp>(_Closure(__t, __e())); \
|
|
} \
|
|
\
|
|
template<typename _Tp> \
|
|
inline _Expr<_BinClos<_UFun, _ValArray, _ValArray, _Tp, _Tp>, _Tp> \
|
|
_Fun(const valarray<_Tp>& __v, const valarray<_Tp>& __w) \
|
|
{ \
|
|
typedef _BinClos<_UFun, _ValArray, _ValArray, _Tp, _Tp> _Closure;\
|
|
return _Expr<_Closure, _Tp>(_Closure(__v, __w)); \
|
|
} \
|
|
\
|
|
template<typename _Tp> \
|
|
inline _Expr<_BinClos<_UFun, _ValArray, _Constant, _Tp, _Tp>, _Tp> \
|
|
_Fun(const valarray<_Tp>& __v, \
|
|
const typename valarray<_Tp>::value_type& __t) \
|
|
{ \
|
|
typedef _BinClos<_UFun, _ValArray, _Constant, _Tp, _Tp> _Closure;\
|
|
return _Expr<_Closure, _Tp>(_Closure(__v, __t)); \
|
|
} \
|
|
\
|
|
template<typename _Tp> \
|
|
inline _Expr<_BinClos<_UFun, _Constant, _ValArray, _Tp, _Tp>, _Tp> \
|
|
_Fun(const typename valarray<_Tp>::value_type& __t, \
|
|
const valarray<_Tp>& __v) \
|
|
{ \
|
|
typedef _BinClos<_UFun, _Constant, _ValArray, _Tp, _Tp> _Closure;\
|
|
return _Expr<_Closure, _Tp>(_Closure(__t, __v)); \
|
|
}
|
|
|
|
_DEFINE_EXPR_BINARY_FUNCTION(atan2, _Atan2)
|
|
_DEFINE_EXPR_BINARY_FUNCTION(pow, _Pow)
|
|
|
|
#undef _DEFINE_EXPR_BINARY_FUNCTION
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
|
|
#endif /* _CPP_VALARRAY_AFTER_H */
|