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valarray_after.h
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// The template and inlines for the -*- C++ -*- internal _Meta class. // Copyright (C) 1997-2018 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file bits/valarray_after.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{valarray} */ // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@cmla.ens-cachan.fr> #ifndef _VALARRAY_AFTER_H #define _VALARRAY_AFTER_H 1 #pragma GCC system_header namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION // // gslice_array closure. // template<class _Dom> class _GBase { public: typedef typename _Dom::value_type value_type; _GBase (const _Dom& __e, const valarray<size_t>& __i) : _M_expr (__e), _M_index(__i) {} value_type operator[] (size_t __i) const { return _M_expr[_M_index[__i]]; } size_t size () const { return _M_index.size(); } private: const _Dom& _M_expr; const valarray<size_t>& _M_index; }; template<typename _Tp> class _GBase<_Array<_Tp> > { public: typedef _Tp value_type; _GBase (_Array<_Tp> __a, const valarray<size_t>& __i) : _M_array (__a), _M_index(__i) {} value_type operator[] (size_t __i) const { return _M_array._M_data[_M_index[__i]]; } size_t size () const { return _M_index.size(); } private: const _Array<_Tp> _M_array; const valarray<size_t>& _M_index; }; template<class _Dom> struct _GClos<_Expr, _Dom> : _GBase<_Dom> { typedef _GBase<_Dom> _Base; typedef typename _Base::value_type value_type; _GClos (const _Dom& __e, const valarray<size_t>& __i) : _Base (__e, __i) {} }; template<typename _Tp> struct _GClos<_ValArray, _Tp> : _GBase<_Array<_Tp> > { typedef _GBase<_Array<_Tp> > _Base; typedef typename _Base::value_type value_type; _GClos (_Array<_Tp> __a, const valarray<size_t>& __i) : _Base (__a, __i) {} }; // // indirect_array closure // template<class _Dom> class _IBase { public: typedef typename _Dom::value_type value_type; _IBase (const _Dom& __e, const valarray<size_t>& __i) : _M_expr (__e), _M_index (__i) {} value_type operator[] (size_t __i) const { return _M_expr[_M_index[__i]]; } size_t size() const { return _M_index.size(); } private: const _Dom& _M_expr; const valarray<size_t>& _M_index; }; template<class _Dom> struct _IClos<_Expr, _Dom> : _IBase<_Dom> { typedef _IBase<_Dom> _Base; typedef typename _Base::value_type value_type; _IClos (const _Dom& __e, const valarray<size_t>& __i) : _Base (__e, __i) {} }; template<typename _Tp> struct _IClos<_ValArray, _Tp> : _IBase<valarray<_Tp> > { typedef _IBase<valarray<_Tp> > _Base; typedef _Tp value_type; _IClos (const valarray<_Tp>& __a, const valarray<size_t>& __i) : _Base (__a, __i) {} }; // // class _Expr // template<class _Clos, typename _Tp> class _Expr { public: typedef _Tp value_type; _Expr(const _Clos&); const _Clos& operator()() const; value_type operator[](size_t) const; valarray<value_type> operator[](slice) const; valarray<value_type> operator[](const gslice&) const; valarray<value_type> operator[](const valarray<bool>&) const; valarray<value_type> operator[](const valarray<size_t>&) const; _Expr<_UnClos<__unary_plus, std::_Expr, _Clos>, value_type> operator+() const; _Expr<_UnClos<__negate, std::_Expr, _Clos>, value_type> operator-() const; _Expr<_UnClos<__bitwise_not, std::_Expr, _Clos>, value_type> operator~() const; _Expr<_UnClos<__logical_not, std::_Expr, _Clos>, bool> operator!() const; size_t size() const; value_type sum() const; valarray<value_type> shift(int) const; valarray<value_type> cshift(int) const; value_type min() const; value_type max() const; valarray<value_type> apply(value_type (*)(const value_type&)) const; valarray<value_type> apply(value_type (*)(value_type)) const; private: const _Clos _M_closure; }; template<class _Clos, typename _Tp> inline _Expr<_Clos, _Tp>::_Expr(const _Clos& __c) : _M_closure(__c) {} template<class _Clos, typename _Tp> inline const _Clos& _Expr<_Clos, _Tp>::operator()() const { return _M_closure; } template<class _Clos, typename _Tp> inline _Tp _Expr<_Clos, _Tp>::operator[](size_t __i) const { return _M_closure[__i]; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::operator[](slice __s) const { valarray<_Tp> __v = valarray<_Tp>(*this)[__s]; return __v; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::operator[](const gslice& __gs) const { valarray<_Tp> __v = valarray<_Tp>(*this)[__gs]; return __v; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::operator[](const valarray<bool>& __m) const { valarray<_Tp> __v = valarray<_Tp>(*this)[__m]; return __v; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::operator[](const valarray<size_t>& __i) const { valarray<_Tp> __v = valarray<_Tp>(*this)[__i]; return __v; } template<class _Clos, typename _Tp> inline size_t _Expr<_Clos, _Tp>::size() const { return _M_closure.size(); } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::shift(int __n) const { valarray<_Tp> __v = valarray<_Tp>(*this).shift(__n); return __v; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::cshift(int __n) const { valarray<_Tp> __v = valarray<_Tp>(*this).cshift(__n); return __v; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::apply(_Tp __f(const _Tp&)) const { valarray<_Tp> __v = valarray<_Tp>(*this).apply(__f); return __v; } template<class _Clos, typename _Tp> inline valarray<_Tp> _Expr<_Clos, _Tp>::apply(_Tp __f(_Tp)) const { valarray<_Tp> __v = valarray<_Tp>(*this).apply(__f); return __v; } // XXX: replace this with a more robust summation algorithm. template<class _Clos, typename _Tp> inline _Tp _Expr<_Clos, _Tp>::sum() const { size_t __n = _M_closure.size(); if (__n == 0) return _Tp(); else { _Tp __s = _M_closure[--__n]; while (__n != 0) __s += _M_closure[--__n]; return __s; } } template<class _Clos, typename _Tp> inline _Tp _Expr<_Clos, _Tp>::min() const { return __valarray_min(_M_closure); } template<class _Clos, typename _Tp> inline _Tp _Expr<_Clos, _Tp>::max() const { return __valarray_max(_M_closure); } template<class _Dom, typename _Tp> inline _Expr<_UnClos<__logical_not, _Expr, _Dom>, bool> _Expr<_Dom, _Tp>::operator!() const { typedef _UnClos<__logical_not, std::_Expr, _Dom> _Closure; return _Expr<_Closure, bool>(_Closure(this->_M_closure)); } #define _DEFINE_EXPR_UNARY_OPERATOR(_Op, _Name) \ template<class _Dom, typename _Tp> \ inline _Expr<_UnClos<_Name, std::_Expr, _Dom>, _Tp> \ _Expr<_Dom, _Tp>::operator _Op() const \ { \ typedef _UnClos<_Name, std::_Expr, _Dom> _Closure; \ return _Expr<_Closure, _Tp>(_Closure(this->_M_closure)); \ } _DEFINE_EXPR_UNARY_OPERATOR(+, __unary_plus) _DEFINE_EXPR_UNARY_OPERATOR(-, __negate) _DEFINE_EXPR_UNARY_OPERATOR(~, __bitwise_not) #undef _DEFINE_EXPR_UNARY_OPERATOR #define _DEFINE_EXPR_BINARY_OPERATOR(_Op, _Name) \ template<class _Dom1, class _Dom2> \ inline _Expr<_BinClos<_Name, _Expr, _Expr, _Dom1, _Dom2>, \ typename __fun<_Name, typename _Dom1::value_type>::result_type> \ operator _Op(const _Expr<_Dom1, typename _Dom1::value_type>& __v, \ const _Expr<_Dom2, typename _Dom2::value_type>& __w) \ { \ typedef typename _Dom1::value_type _Arg; \ typedef typename __fun<_Name, _Arg>::result_type _Value; \ typedef _BinClos<_Name, _Expr, _Expr, _Dom1, _Dom2> _Closure; \ return _Expr<_Closure, _Value>(_Closure(__v(), __w())); \ } \ \ template<class _Dom> \ inline _Expr<_BinClos<_Name, _Expr, _Constant, _Dom, \ typename _Dom::value_type>, \ typename __fun<_Name, typename _Dom::value_type>::result_type> \ operator _Op(const _Expr<_Dom, typename _Dom::value_type>& __v, \ const typename _Dom::value_type& __t) \ { \ typedef typename _Dom::value_type _Arg; \ typedef typename __fun<_Name, _Arg>::result_type _Value; \ typedef _BinClos<_Name, _Expr, _Constant, _Dom, _Arg> _Closure; \ return _Expr<_Closure, _Value>(_Closure(__v(), __t)); \ } \ \ template<class _Dom> \ inline _Expr<_BinClos<_Name, _Constant, _Expr, \ typename _Dom::value_type, _Dom>, \ typename __fun<_Name, typename _Dom::value_type>::result_type> \ operator _Op(const typename _Dom::value_type& __t, \ const _Expr<_Dom, typename _Dom::value_type>& __v) \ { \ typedef typename _Dom::value_type _Arg; \ typedef typename __fun<_Name, _Arg>::result_type _Value; \ typedef _BinClos<_Name, _Constant, _Expr, _Arg, _Dom> _Closure; \ return _Expr<_Closure, _Value>(_Closure(__t, __v())); \ } \ \ template<class _Dom> \ inline _Expr<_BinClos<_Name, _Expr, _ValArray, \ _Dom, typename _Dom::value_type>, \ typename __fun<_Name, typename _Dom::value_type>::result_type> \ operator _Op(const _Expr<_Dom,typename _Dom::value_type>& __e, \ const valarray<typename _Dom::value_type>& __v) \ { \ typedef typename _Dom::value_type _Arg; \ typedef typename __fun<_Name, _Arg>::result_type _Value; \ typedef _BinClos<_Name, _Expr, _ValArray, _Dom, _Arg> _Closure; \ return _Expr<_Closure, _Value>(_Closure(__e(), __v)); \ } \ \ template<class _Dom> \ inline _Expr<_BinClos<_Name, _ValArray, _Expr, \ typename _Dom::value_type, _Dom>, \ typename __fun<_Name, typename _Dom::value_type>::result_type> \ operator _Op(const valarray<typename _Dom::value_type>& __v, \ const _Expr<_Dom, typename _Dom::value_type>& __e) \ { \ typedef typename _Dom::value_type _Tp; \ typedef typename __fun<_Name, _Tp>::result_type _Value; \ typedef _BinClos<_Name, _ValArray, _Expr, _Tp, _Dom> _Closure; \ return _Expr<_Closure, _Value>(_Closure(__v, __e ())); \ } _DEFINE_EXPR_BINARY_OPERATOR(+, __plus) _DEFINE_EXPR_BINARY_OPERATOR(-, __minus) _DEFINE_EXPR_BINARY_OPERATOR(*, __multiplies) _DEFINE_EXPR_BINARY_OPERATOR(/, __divides) _DEFINE_EXPR_BINARY_OPERATOR(%, __modulus) _DEFINE_EXPR_BINARY_OPERATOR(^, __bitwise_xor) _DEFINE_EXPR_BINARY_OPERATOR(&, __bitwise_and) _DEFINE_EXPR_BINARY_OPERATOR(|, __bitwise_or) _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left) _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right) _DEFINE_EXPR_BINARY_OPERATOR(&&, __logical_and) _DEFINE_EXPR_BINARY_OPERATOR(||, __logical_or) _DEFINE_EXPR_BINARY_OPERATOR(==, __equal_to) _DEFINE_EXPR_BINARY_OPERATOR(!=, __not_equal_to) _DEFINE_EXPR_BINARY_OPERATOR(<, __less) _DEFINE_EXPR_BINARY_OPERATOR(>, __greater) _DEFINE_EXPR_BINARY_OPERATOR(<=, __less_equal) _DEFINE_EXPR_BINARY_OPERATOR(>=, __greater_equal) #undef _DEFINE_EXPR_BINARY_OPERATOR #define _DEFINE_EXPR_UNARY_FUNCTION(_Name, _UName) \ template<class _Dom> \ inline _Expr<_UnClos<_UName, _Expr, _Dom>, \ typename _Dom::value_type> \ _Name(const _Expr<_Dom, typename _Dom::value_type>& __e) \ { \ typedef typename _Dom::value_type _Tp; \ typedef _UnClos<_UName, _Expr, _Dom> _Closure; \ return _Expr<_Closure, _Tp>(_Closure(__e())); \ } \ \ template<typename _Tp> \ inline _Expr<_UnClos<_UName, _ValArray, _Tp>, _Tp> \ _Name(const valarray<_Tp>& __v) \ { \ typedef _UnClos<_UName, _ValArray, _Tp> _Closure; \ return _Expr<_Closure, _Tp>(_Closure(__v)); \ } _DEFINE_EXPR_UNARY_FUNCTION(abs, _Abs) _DEFINE_EXPR_UNARY_FUNCTION(cos, _Cos) _DEFINE_EXPR_UNARY_FUNCTION(acos, _Acos) _DEFINE_EXPR_UNARY_FUNCTION(cosh, _Cosh) _DEFINE_EXPR_UNARY_FUNCTION(sin, _Sin) _DEFINE_EXPR_UNARY_FUNCTION(asin, _Asin) _DEFINE_EXPR_UNARY_FUNCTION(sinh, _Sinh) _DEFINE_EXPR_UNARY_FUNCTION(tan, _Tan) _DEFINE_EXPR_UNARY_FUNCTION(tanh, _Tanh) _DEFINE_EXPR_UNARY_FUNCTION(atan, _Atan) _DEFINE_EXPR_UNARY_FUNCTION(exp, _Exp) _DEFINE_EXPR_UNARY_FUNCTION(log, _Log) _DEFINE_EXPR_UNARY_FUNCTION(log10, _Log10) _DEFINE_EXPR_UNARY_FUNCTION(sqrt, _Sqrt) #undef _DEFINE_EXPR_UNARY_FUNCTION #define _DEFINE_EXPR_BINARY_FUNCTION(_Fun, _UFun) \ template<class _Dom1, class _Dom2> \ inline _Expr<_BinClos<_UFun, _Expr, _Expr, _Dom1, _Dom2>, \ typename _Dom1::value_type> \ _Fun(const _Expr<_Dom1, typename _Dom1::value_type>& __e1, \ const _Expr<_Dom2, typename _Dom2::value_type>& __e2) \ { \ typedef typename _Dom1::value_type _Tp; \ typedef _BinClos<_UFun, _Expr, _Expr, _Dom1, _Dom2> _Closure; \ return _Expr<_Closure, _Tp>(_Closure(__e1(), __e2())); \ } \ \ template<class _Dom> \ inline _Expr<_BinClos<_UFun, _Expr, _ValArray, _Dom, \ 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 _Tp& __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 _Tp& __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 */
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