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// The template and inlines for the -*- C++ -*- internal _Meta class. |
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// Copyright (C) 1997-2013 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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// . |
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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 |
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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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// |
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// gslice_array closure. |
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// |
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template |
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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& __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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const _Dom& _M_expr; |
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const valarray& _M_index; |
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}; |
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template |
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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& __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& _M_index; |
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}; |
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template |
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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& __i) |
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: _Base (__e, __i) {} |
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}; |
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template |
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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& __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 |
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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& __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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const _Dom& _M_expr; |
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const valarray& _M_index; |
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}; |
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template |
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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& __i) |
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: _Base (__e, __i) {} |
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}; |
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template |
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struct _IClos<_ValArray, _Tp> |
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: _IBase > |
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{ |
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typedef _IBase > _Base; |
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typedef _Tp value_type; |
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_IClos (const valarray<_Tp>& __a, const valarray& __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 |
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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 operator[](slice) const; |
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valarray operator[](const gslice&) const; |
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valarray operator[](const valarray&) const; |
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valarray operator[](const valarray&) 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 shift(int) const; |
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valarray cshift(int) const; |
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value_type min() const; |
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value_type max() const; |
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valarray apply(value_type (*)(const value_type&)) const; |
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valarray 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 |
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inline |
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_Expr<_Clos, _Tp>::_Expr(const _Clos& __c) : _M_closure(__c) {} |
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template |
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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 |
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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 |
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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 |
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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 |
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inline valarray<_Tp> |
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_Expr<_Clos, _Tp>::operator[](const valarray& __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 |
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inline valarray<_Tp> |
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_Expr<_Clos, _Tp>::operator[](const valarray& __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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 |
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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 \ |
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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 \ |
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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 \ |
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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 \ |
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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 \ |
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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& __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 \ |
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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& __v, \ |
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const _Expr<_Dom, typename _Dom::value_type>& __e) \ |
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{ \ |
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396 |
typedef typename _Dom::value_type _Tp; \ |
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397 |
typedef typename __fun<_Name, _Tp>::result_type _Value; \ |
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398 |
typedef _BinClos<_Name, _ValArray, _Expr, _Tp, _Dom> _Closure; \ |
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|
399 |
return _Expr<_Closure, _Value>(_Closure(__v, __e ())); \ |
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|
400 |
} |
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401 |
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|
402 |
_DEFINE_EXPR_BINARY_OPERATOR(+, __plus) |
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403 |
_DEFINE_EXPR_BINARY_OPERATOR(-, __minus) |
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|
404 |
_DEFINE_EXPR_BINARY_OPERATOR(*, __multiplies) |
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405 |
_DEFINE_EXPR_BINARY_OPERATOR(/, __divides) |
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|
406 |
_DEFINE_EXPR_BINARY_OPERATOR(%, __modulus) |
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407 |
_DEFINE_EXPR_BINARY_OPERATOR(^, __bitwise_xor) |
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|
408 |
_DEFINE_EXPR_BINARY_OPERATOR(&, __bitwise_and) |
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409 |
_DEFINE_EXPR_BINARY_OPERATOR(|, __bitwise_or) |
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410 |
_DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left) |
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|
411 |
_DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right) |
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412 |
_DEFINE_EXPR_BINARY_OPERATOR(&&, __logical_and) |
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|
413 |
_DEFINE_EXPR_BINARY_OPERATOR(||, __logical_or) |
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414 |
_DEFINE_EXPR_BINARY_OPERATOR(==, __equal_to) |
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415 |
_DEFINE_EXPR_BINARY_OPERATOR(!=, __not_equal_to) |
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416 |
_DEFINE_EXPR_BINARY_OPERATOR(<, __less) |
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417 |
_DEFINE_EXPR_BINARY_OPERATOR(>, __greater) |
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418 |
_DEFINE_EXPR_BINARY_OPERATOR(<=, __less_equal) |
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|
419 |
_DEFINE_EXPR_BINARY_OPERATOR(>=, __greater_equal) |
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420 |
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421 |
#undef _DEFINE_EXPR_BINARY_OPERATOR |
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|
422 |
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|
423 |
#define _DEFINE_EXPR_UNARY_FUNCTION(_Name, _UName) \ |
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|
424 |
template \ |
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|
425 |
inline _Expr<_UnClos<_UName, _Expr, _Dom>, \ |
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|
426 |
typename _Dom::value_type> \ |
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|
427 |
_Name(const _Expr<_Dom, typename _Dom::value_type>& __e) \ |
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|
428 |
{ \ |
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|
429 |
typedef typename _Dom::value_type _Tp; \ |
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|
430 |
typedef _UnClos<_UName, _Expr, _Dom> _Closure; \ |
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|
431 |
return _Expr<_Closure, _Tp>(_Closure(__e())); \ |
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|
432 |
} \ |
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|
433 |
\ |
|
|
434 |
template \ |
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|
435 |
inline _Expr<_UnClos<_UName, _ValArray, _Tp>, _Tp> \ |
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436 |
_Name(const valarray<_Tp>& __v) \ |
|
|
437 |
{ \ |
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|
438 |
typedef _UnClos<_UName, _ValArray, _Tp> _Closure; \ |
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|
439 |
return _Expr<_Closure, _Tp>(_Closure(__v)); \ |
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|
440 |
} |
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|
441 |
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|
442 |
_DEFINE_EXPR_UNARY_FUNCTION(abs, _Abs) |
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|
443 |
_DEFINE_EXPR_UNARY_FUNCTION(cos, _Cos) |
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|
444 |
_DEFINE_EXPR_UNARY_FUNCTION(acos, _Acos) |
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445 |
_DEFINE_EXPR_UNARY_FUNCTION(cosh, _Cosh) |
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|
446 |
_DEFINE_EXPR_UNARY_FUNCTION(sin, _Sin) |
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|
447 |
_DEFINE_EXPR_UNARY_FUNCTION(asin, _Asin) |
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|
448 |
_DEFINE_EXPR_UNARY_FUNCTION(sinh, _Sinh) |
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|
449 |
_DEFINE_EXPR_UNARY_FUNCTION(tan, _Tan) |
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|
450 |
_DEFINE_EXPR_UNARY_FUNCTION(tanh, _Tanh) |
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|
451 |
_DEFINE_EXPR_UNARY_FUNCTION(atan, _Atan) |
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|
452 |
_DEFINE_EXPR_UNARY_FUNCTION(exp, _Exp) |
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|
453 |
_DEFINE_EXPR_UNARY_FUNCTION(log, _Log) |
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|
454 |
_DEFINE_EXPR_UNARY_FUNCTION(log10, _Log10) |
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|
455 |
_DEFINE_EXPR_UNARY_FUNCTION(sqrt, _Sqrt) |
|
|
456 |
|
|
|
457 |
#undef _DEFINE_EXPR_UNARY_FUNCTION |
|
|
458 |
|
|
|
459 |
#define _DEFINE_EXPR_BINARY_FUNCTION(_Fun, _UFun) \ |
|
|
460 |
template \ |
|
|
461 |
inline _Expr<_BinClos<_UFun, _Expr, _Expr, _Dom1, _Dom2>, \ |
|
|
462 |
typename _Dom1::value_type> \ |
|
|
463 |
_Fun(const _Expr<_Dom1, typename _Dom1::value_type>& __e1, \ |
|
|
464 |
const _Expr<_Dom2, typename _Dom2::value_type>& __e2) \ |
|
|
465 |
{ \ |
|
|
466 |
typedef typename _Dom1::value_type _Tp; \ |
|
|
467 |
typedef _BinClos<_UFun, _Expr, _Expr, _Dom1, _Dom2> _Closure; \ |
|
|
468 |
return _Expr<_Closure, _Tp>(_Closure(__e1(), __e2())); \ |
|
|
469 |
} \ |
|
|
470 |
\ |
|
|
471 |
template \ |
|
|
472 |
inline _Expr<_BinClos<_UFun, _Expr, _ValArray, _Dom, \ |
|
|
473 |
typename _Dom::value_type>, \ |
|
|
474 |
typename _Dom::value_type> \ |
|
|
475 |
_Fun(const _Expr<_Dom, typename _Dom::value_type>& __e, \ |
|
|
476 |
const valarray& __v) \ |
|
|
477 |
{ \ |
|
|
478 |
typedef typename _Dom::value_type _Tp; \ |
|
|
479 |
typedef _BinClos<_UFun, _Expr, _ValArray, _Dom, _Tp> _Closure; \ |
|
|
480 |
return _Expr<_Closure, _Tp>(_Closure(__e(), __v)); \ |
|
|
481 |
} \ |
|
|
482 |
\ |
|
|
483 |
template \ |
|
|
484 |
inline _Expr<_BinClos<_UFun, _ValArray, _Expr, \ |
|
|
485 |
typename _Dom::value_type, _Dom>, \ |
|
|
486 |
typename _Dom::value_type> \ |
|
|
487 |
_Fun(const valarray& __v, \ |
|
|
488 |
const _Expr<_Dom, typename _Dom::value_type>& __e) \ |
|
|
489 |
{ \ |
|
|
490 |
typedef typename _Dom::value_type _Tp; \ |
|
|
491 |
typedef _BinClos<_UFun, _ValArray, _Expr, _Tp, _Dom> _Closure; \ |
|
|
492 |
return _Expr<_Closure, _Tp>(_Closure(__v, __e())); \ |
|
|
493 |
} \ |
|
|
494 |
\ |
|
|
495 |
template \ |
|
|
496 |
inline _Expr<_BinClos<_UFun, _Expr, _Constant, _Dom, \ |
|
|
497 |
typename _Dom::value_type>, \ |
|
|
498 |
typename _Dom::value_type> \ |
|
|
499 |
_Fun(const _Expr<_Dom, typename _Dom::value_type>& __e, \ |
|
|
500 |
const typename _Dom::value_type& __t) \ |
|
|
501 |
{ \ |
|
|
502 |
typedef typename _Dom::value_type _Tp; \ |
|
|
503 |
typedef _BinClos<_UFun, _Expr, _Constant, _Dom, _Tp> _Closure; \ |
|
|
504 |
return _Expr<_Closure, _Tp>(_Closure(__e(), __t)); \ |
|
|
505 |
} \ |
|
|
506 |
\ |
|
|
507 |
template \ |
|
|
508 |
inline _Expr<_BinClos<_UFun, _Constant, _Expr, \ |
|
|
509 |
typename _Dom::value_type, _Dom>, \ |
|
|
510 |
typename _Dom::value_type> \ |
|
|
511 |
_Fun(const typename _Dom::value_type& __t, \ |
|
|
512 |
const _Expr<_Dom, typename _Dom::value_type>& __e) \ |
|
|
513 |
{ \ |
|
|
514 |
typedef typename _Dom::value_type _Tp; \ |
|
|
515 |
typedef _BinClos<_UFun, _Constant, _Expr, _Tp, _Dom> _Closure; \ |
|
|
516 |
return _Expr<_Closure, _Tp>(_Closure(__t, __e())); \ |
|
|
517 |
} \ |
|
|
518 |
\ |
|
|
519 |
template \ |
|
|
520 |
inline _Expr<_BinClos<_UFun, _ValArray, _ValArray, _Tp, _Tp>, _Tp> \ |
|
|
521 |
_Fun(const valarray<_Tp>& __v, const valarray<_Tp>& __w) \ |
|
|
522 |
{ \ |
|
|
523 |
typedef _BinClos<_UFun, _ValArray, _ValArray, _Tp, _Tp> _Closure;\ |
|
|
524 |
return _Expr<_Closure, _Tp>(_Closure(__v, __w)); \ |
|
|
525 |
} \ |
|
|
526 |
\ |
|
|
527 |
template \ |
|
|
528 |
inline _Expr<_BinClos<_UFun, _ValArray, _Constant, _Tp, _Tp>, _Tp> \ |
|
|
529 |
_Fun(const valarray<_Tp>& __v, const _Tp& __t) \ |
|
|
530 |
{ \ |
|
|
531 |
typedef _BinClos<_UFun, _ValArray, _Constant, _Tp, _Tp> _Closure;\ |
|
|
532 |
return _Expr<_Closure, _Tp>(_Closure(__v, __t)); \ |
|
|
533 |
} \ |
|
|
534 |
\ |
|
|
535 |
template \ |
|
|
536 |
inline _Expr<_BinClos<_UFun, _Constant, _ValArray, _Tp, _Tp>, _Tp> \ |
|
|
537 |
_Fun(const _Tp& __t, const valarray<_Tp>& __v) \ |
|
|
538 |
{ \ |
|
|
539 |
typedef _BinClos<_UFun, _Constant, _ValArray, _Tp, _Tp> _Closure;\ |
|
|
540 |
return _Expr<_Closure, _Tp>(_Closure(__t, __v)); \ |
|
|
541 |
} |
|
|
542 |
|
|
|
543 |
_DEFINE_EXPR_BINARY_FUNCTION(atan2, _Atan2) |
|
|
544 |
_DEFINE_EXPR_BINARY_FUNCTION(pow, _Pow) |
|
|
545 |
|
|
|
546 |
#undef _DEFINE_EXPR_BINARY_FUNCTION |
|
|
547 |
|
|
|
548 |
_GLIBCXX_END_NAMESPACE_VERSION |
|
|
549 |
} // namespace |
|
|
550 |
|
|
|
551 |
#endif /* _CPP_VALARRAY_AFTER_H */ |