500 lines
22 KiB
C++
500 lines
22 KiB
C++
// The template and inlines for the -*- C++ -*- internal _Meta class.
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// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 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 2, 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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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// Written by Gabriel Dos Reis <Gabriel.Dos-Reis@cmla.ens-cachan.fr>
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/** @file valarray_meta.h
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* This is an internal header file, included by other library headers.
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* You should not attempt to use it directly.
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*/
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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
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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> class _GBase {
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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 operator[] (size_t __i) const
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{ return _M_expr[_M_index[__i]]; }
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size_t size () const { return _M_index.size(); }
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private:
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const _Dom& _M_expr;
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const valarray<size_t>& _M_index;
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};
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template<typename _Tp> class _GBase<_Array<_Tp> > {
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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 operator[] (size_t __i) const
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{ return _M_array._M_data[_M_index[__i]]; }
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size_t size () const { 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> struct _GClos<_Expr,_Dom> : _GBase<_Dom> {
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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> : _GBase<_Array<_Tp> > {
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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> class _IBase {
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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 operator[] (size_t __i) const
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{ return _M_expr[_M_index[__i]]; }
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size_t size() const { return _M_index.size(); }
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private:
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const _Dom& _M_expr;
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const valarray<size_t>& _M_index;
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};
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template<class _Dom> struct _IClos<_Expr,_Dom> : _IBase<_Dom> {
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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> : _IBase<valarray<_Tp> > {
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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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//
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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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{ return _M_closure[__s]; }
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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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{ return _M_closure[__gs]; }
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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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{ return _M_closure[__m]; }
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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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{ return _M_closure[__i]; }
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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 { 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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{ return valarray<_Tp>(_M_closure).shift(__n); }
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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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{ return valarray<_Tp>(_M_closure).cshift(__n); }
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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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{ return valarray<_Tp>(_M_closure).apply(__f); }
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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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{ return valarray<_Tp>(_M_closure).apply(__f); }
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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,_Tp>(_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,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,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,_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,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) \
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template<class _Dom> \
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inline _Expr<_UnClos<__##_Name,_Expr,_Dom>,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<__##_Name,_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<__##_Name,_ValArray,_Tp>,_Tp> \
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_Name(const valarray<_Tp>& __v) \
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{ \
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typedef _UnClos<__##_Name,_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)
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_DEFINE_EXPR_UNARY_FUNCTION(cos)
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_DEFINE_EXPR_UNARY_FUNCTION(acos)
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_DEFINE_EXPR_UNARY_FUNCTION(cosh)
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_DEFINE_EXPR_UNARY_FUNCTION(sin)
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_DEFINE_EXPR_UNARY_FUNCTION(asin)
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_DEFINE_EXPR_UNARY_FUNCTION(sinh)
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_DEFINE_EXPR_UNARY_FUNCTION(tan)
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_DEFINE_EXPR_UNARY_FUNCTION(tanh)
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_DEFINE_EXPR_UNARY_FUNCTION(atan)
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_DEFINE_EXPR_UNARY_FUNCTION(exp)
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_DEFINE_EXPR_UNARY_FUNCTION(log)
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_DEFINE_EXPR_UNARY_FUNCTION(log10)
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_DEFINE_EXPR_UNARY_FUNCTION(sqrt)
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#undef _DEFINE_EXPR_UNARY_FUNCTION
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#define _DEFINE_EXPR_BINARY_FUNCTION(_Fun) \
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template<class _Dom1, class _Dom2> \
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inline _Expr<_BinClos<__##_Fun,_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<__##_Fun,_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<__##_Fun, _Expr, _ValArray, _Dom, \
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typename _Dom::value_type>, \
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typename _Dom::value_type> \
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_Fun(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 _Tp; \
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typedef _BinClos<__##_Fun, _Expr, _ValArray, _Dom, _Tp> _Closure;\
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return _Expr<_Closure,_Tp>(_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<__##_Fun, _ValArray, _Expr, \
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typename _Dom::value_type,_Dom>, \
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typename _Dom::value_type> \
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_Fun(const valarray<typename _Dom::valarray>& __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 _BinClos<__##_Fun,_ValArray,_Expr,_Tp,_Dom> _Closure; \
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return _Expr<_Closure,_Tp>(_Closure(__v, __e())); \
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} \
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\
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template<class _Dom> \
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inline _Expr<_BinClos<__##_Fun,_Expr,_Constant,_Dom, \
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typename _Dom::value_type>, \
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typename _Dom::value_type> \
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_Fun(const _Expr<_Dom, typename _Dom::value_type>& __e, \
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const typename _Dom::value_type& __t) \
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{ \
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typedef typename _Dom::value_type _Tp; \
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typedef _BinClos<__##_Fun,_Expr,_Constant,_Dom,_Tp> _Closure; \
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return _Expr<_Closure,_Tp>(_Closure(__e(), __t)); \
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} \
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\
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|
template<class _Dom> \
|
|
inline _Expr<_BinClos<__##_Fun,_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<__##_Fun, _Constant,_Expr,_Tp,_Dom> _Closure; \
|
|
return _Expr<_Closure,_Tp>(_Closure(__t, __e())); \
|
|
} \
|
|
\
|
|
template<typename _Tp> \
|
|
inline _Expr<_BinClos<__##_Fun,_ValArray,_ValArray,_Tp,_Tp>, _Tp> \
|
|
_Fun(const valarray<_Tp>& __v, const valarray<_Tp>& __w) \
|
|
{ \
|
|
typedef _BinClos<__##_Fun,_ValArray,_ValArray,_Tp,_Tp> _Closure; \
|
|
return _Expr<_Closure,_Tp>(_Closure(__v, __w)); \
|
|
} \
|
|
\
|
|
template<typename _Tp> \
|
|
inline _Expr<_BinClos<__##_Fun,_ValArray,_Constant,_Tp,_Tp>,_Tp> \
|
|
_Fun(const valarray<_Tp>& __v, const _Tp& __t) \
|
|
{ \
|
|
typedef _BinClos<__##_Fun,_ValArray,_Constant,_Tp,_Tp> _Closure; \
|
|
return _Expr<_Closure,_Tp>(_Closure(__v, __t)); \
|
|
} \
|
|
\
|
|
template<typename _Tp> \
|
|
inline _Expr<_BinClos<__##_Fun,_Constant,_ValArray,_Tp,_Tp>,_Tp> \
|
|
_Fun(const _Tp& __t, const valarray<_Tp>& __v) \
|
|
{ \
|
|
typedef _BinClos<__##_Fun,_Constant,_ValArray,_Tp,_Tp> _Closure; \
|
|
return _Expr<_Closure,_Tp>(_Closure(__t, __v)); \
|
|
}
|
|
|
|
_DEFINE_EXPR_BINARY_FUNCTION(atan2)
|
|
_DEFINE_EXPR_BINARY_FUNCTION(pow)
|
|
|
|
#undef _DEFINE_EXPR_BINARY_FUNCTION
|
|
|
|
} // std::
|
|
|
|
|
|
#endif /* _CPP_VALARRAY_AFTER_H */
|
|
|
|
// Local Variables:
|
|
// mode:c++
|
|
// End:
|