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C/C++ Source or Header  |  2005-01-29  |  22KB  |  500 lines
  1. // The template and inlines for the -*- C++ -*- internal _Meta class.
  2.  
  3. // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
  4. //
  5. // This file is part of the GNU ISO C++ Library.  This library is free
  6. // software; you can redistribute it and/or modify it under the
  7. // terms of the GNU General Public License as published by the
  8. // Free Software Foundation; either version 2, or (at your option)
  9. // any later version.
  10.  
  11. // This library is distributed in the hope that it will be useful,
  12. // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14. // GNU General Public License for more details.
  15.  
  16. // You should have received a copy of the GNU General Public License along
  17. // with this library; see the file COPYING.  If not, write to the Free
  18. // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19. // USA.
  20.  
  21. // As a special exception, you may use this file as part of a free software
  22. // library without restriction.  Specifically, if other files instantiate
  23. // templates or use macros or inline functions from this file, or you compile
  24. // this file and link it with other files to produce an executable, this
  25. // file does not by itself cause the resulting executable to be covered by
  26. // the GNU General Public License.  This exception does not however
  27. // invalidate any other reasons why the executable file might be covered by
  28. // the GNU General Public License.
  29.  
  30. // Written by Gabriel Dos Reis <Gabriel.Dos-Reis@cmla.ens-cachan.fr>
  31.  
  32. /** @file valarray_meta.h
  33.  *  This is an internal header file, included by other library headers.
  34.  *  You should not attempt to use it directly.
  35.  */
  36.  
  37. #ifndef _VALARRAY_AFTER_H
  38. #define _VALARRAY_AFTER_H 1
  39.  
  40. #pragma GCC system_header
  41.  
  42. namespace std
  43. {
  44.  
  45.     //
  46.     // gslice_array closure.
  47.     //
  48.     template<class _Dom> class _GBase {
  49.     public:
  50.         typedef typename _Dom::value_type value_type;
  51.  
  52.         _GBase (const _Dom& __e, const valarray<size_t>& __i)
  53.                 : _M_expr (__e), _M_index(__i) {}
  54.         value_type operator[] (size_t __i) const
  55.         { return _M_expr[_M_index[__i]]; }
  56.         size_t size () const { return _M_index.size(); }
  57.  
  58.     private:
  59.         const _Dom&     _M_expr;
  60.         const valarray<size_t>& _M_index;
  61.     };
  62.  
  63.     template<typename _Tp> class _GBase<_Array<_Tp> > {
  64.     public:
  65.         typedef _Tp value_type;
  66.  
  67.         _GBase (_Array<_Tp> __a, const valarray<size_t>& __i)
  68.                 : _M_array (__a), _M_index(__i) {}
  69.         value_type operator[] (size_t __i) const
  70.         { return _M_array._M_data[_M_index[__i]]; }
  71.         size_t size () const { return _M_index.size(); }
  72.  
  73.     private:
  74.         const _Array<_Tp>     _M_array;
  75.         const valarray<size_t>& _M_index;
  76.     };
  77.  
  78.     template<class _Dom> struct _GClos<_Expr,_Dom> : _GBase<_Dom> {
  79.         typedef _GBase<_Dom> _Base;
  80.         typedef typename _Base::value_type value_type;
  81.  
  82.         _GClos (const _Dom& __e, const valarray<size_t>& __i)
  83.                 : _Base (__e, __i) {}
  84.     };
  85.  
  86.     template<typename _Tp>
  87.     struct _GClos<_ValArray,_Tp> : _GBase<_Array<_Tp> > {
  88.         typedef _GBase<_Array<_Tp> > _Base;
  89.         typedef typename _Base::value_type value_type;
  90.  
  91.         _GClos (_Array<_Tp> __a, const valarray<size_t>& __i)
  92.                 : _Base (__a, __i) {}
  93.     };
  94.  
  95.     //
  96.     // indirect_array closure
  97.     //
  98.     template<class _Dom> class _IBase {
  99.     public:
  100.         typedef typename _Dom::value_type value_type;
  101.  
  102.         _IBase (const _Dom& __e, const valarray<size_t>& __i)
  103.                 : _M_expr (__e), _M_index (__i) {}
  104.         value_type operator[] (size_t __i) const
  105.         { return _M_expr[_M_index[__i]]; }
  106.         size_t size() const { return _M_index.size(); }
  107.  
  108.     private:
  109.         const _Dom&        _M_expr;
  110.         const valarray<size_t>& _M_index;
  111.     };
  112.  
  113.     template<class _Dom> struct _IClos<_Expr,_Dom> : _IBase<_Dom> {
  114.         typedef _IBase<_Dom> _Base;
  115.         typedef typename _Base::value_type value_type;
  116.  
  117.         _IClos (const _Dom& __e, const valarray<size_t>& __i)
  118.                 : _Base (__e, __i) {}
  119.     };
  120.  
  121.     template<typename _Tp>
  122.     struct _IClos<_ValArray,_Tp>  : _IBase<valarray<_Tp> > {
  123.         typedef _IBase<valarray<_Tp> > _Base;
  124.         typedef _Tp value_type;
  125.  
  126.         _IClos (const valarray<_Tp>& __a, const valarray<size_t>& __i)
  127.                 : _Base (__a, __i) {}
  128.     };
  129.  
  130.   //
  131.   // class _Expr
  132.   //
  133.   template<class _Clos, typename _Tp>
  134.     class _Expr
  135.     {
  136.     public:
  137.       typedef _Tp value_type;
  138.  
  139.       _Expr(const _Clos&);
  140.  
  141.       const _Clos& operator()() const;
  142.  
  143.       value_type operator[](size_t) const;
  144.       valarray<value_type> operator[](slice) const;
  145.       valarray<value_type> operator[](const gslice&) const;
  146.       valarray<value_type> operator[](const valarray<bool>&) const;
  147.       valarray<value_type> operator[](const valarray<size_t>&) const;
  148.  
  149.       _Expr<_UnClos<__unary_plus,std::_Expr,_Clos>, value_type>
  150.         operator+() const;
  151.  
  152.       _Expr<_UnClos<__negate,std::_Expr,_Clos>, value_type>
  153.         operator-() const;
  154.  
  155.       _Expr<_UnClos<__bitwise_not,std::_Expr,_Clos>, value_type>
  156.         operator~() const;
  157.  
  158.       _Expr<_UnClos<__logical_not,std::_Expr,_Clos>, bool>
  159.         operator!() const;
  160.  
  161.       size_t size() const;
  162.       value_type sum() const;
  163.  
  164.       valarray<value_type> shift(int) const;
  165.       valarray<value_type> cshift(int) const;
  166.  
  167.       value_type min() const;
  168.       value_type max() const;
  169.  
  170.       valarray<value_type> apply(value_type (*)(const value_type&)) const;
  171.       valarray<value_type> apply(value_type (*)(value_type)) const;
  172.  
  173.     private:
  174.       const _Clos _M_closure;
  175.     };
  176.  
  177.   template<class _Clos, typename _Tp>
  178.     inline
  179.     _Expr<_Clos,_Tp>::_Expr(const _Clos& __c) : _M_closure(__c) {}
  180.  
  181.   template<class _Clos, typename _Tp>
  182.     inline const _Clos&
  183.     _Expr<_Clos,_Tp>::operator()() const
  184.     { return _M_closure; }
  185.  
  186.   template<class _Clos, typename _Tp>
  187.     inline _Tp
  188.     _Expr<_Clos,_Tp>::operator[](size_t __i) const
  189.     { return _M_closure[__i]; }
  190.  
  191.   template<class _Clos, typename _Tp>
  192.     inline valarray<_Tp>
  193.     _Expr<_Clos,_Tp>::operator[](slice __s) const
  194.     { return _M_closure[__s]; }
  195.  
  196.   template<class _Clos, typename _Tp>
  197.     inline valarray<_Tp>
  198.     _Expr<_Clos,_Tp>::operator[](const gslice& __gs) const
  199.     { return _M_closure[__gs]; }
  200.  
  201.   template<class _Clos, typename _Tp>
  202.     inline valarray<_Tp>
  203.     _Expr<_Clos,_Tp>::operator[](const valarray<bool>& __m) const
  204.     { return _M_closure[__m]; }
  205.  
  206.   template<class _Clos, typename _Tp>
  207.     inline valarray<_Tp>
  208.     _Expr<_Clos,_Tp>::operator[](const valarray<size_t>& __i) const
  209.     { return _M_closure[__i]; }
  210.  
  211.   template<class _Clos, typename _Tp>
  212.     inline size_t
  213.     _Expr<_Clos,_Tp>::size() const  { return _M_closure.size (); }
  214.  
  215.   template<class _Clos, typename _Tp>
  216.     inline valarray<_Tp>
  217.     _Expr<_Clos, _Tp>::shift(int __n) const
  218.     { return valarray<_Tp>(_M_closure).shift(__n); }
  219.  
  220.   template<class _Clos, typename _Tp>
  221.     inline valarray<_Tp>
  222.     _Expr<_Clos, _Tp>::cshift(int __n) const
  223.     { return valarray<_Tp>(_M_closure).cshift(__n); }
  224.  
  225.   template<class _Clos, typename _Tp>
  226.     inline valarray<_Tp>
  227.     _Expr<_Clos, _Tp>::apply(_Tp __f(const _Tp&)) const
  228.     { return valarray<_Tp>(_M_closure).apply(__f); }
  229.  
  230.   template<class _Clos, typename _Tp>
  231.     inline valarray<_Tp>
  232.     _Expr<_Clos, _Tp>::apply(_Tp __f(_Tp)) const
  233.     { return valarray<_Tp>(_M_closure).apply(__f); }
  234.  
  235.   // XXX: replace this with a more robust summation algorithm.
  236.   template<class _Clos, typename _Tp>
  237.     inline _Tp
  238.     _Expr<_Clos,_Tp>::sum() const
  239.     {
  240.       size_t __n = _M_closure.size();
  241.       if (__n == 0)
  242.     return _Tp();
  243.       else
  244.     {
  245.       _Tp __s = _M_closure[--__n];
  246.       while (__n != 0)
  247.         __s += _M_closure[--__n];
  248.       return __s;
  249.         }
  250.     }
  251.  
  252.   template<class _Clos, typename _Tp>
  253.     inline _Tp
  254.     _Expr<_Clos, _Tp>::min() const
  255.     { return __valarray_min(_M_closure); }
  256.  
  257.   template<class _Clos, typename _Tp>
  258.     inline _Tp
  259.     _Expr<_Clos, _Tp>::max() const
  260.     { return __valarray_max(_M_closure); }
  261.  
  262.   template<class _Dom, typename _Tp>
  263.     inline _Expr<_UnClos<__logical_not,_Expr,_Dom>, bool>
  264.     _Expr<_Dom,_Tp>::operator!() const
  265.     {
  266.       typedef _UnClos<__logical_not,std::_Expr,_Dom> _Closure;
  267.       return _Expr<_Closure,_Tp>(_Closure(this->_M_closure));
  268.     }
  269.  
  270. #define _DEFINE_EXPR_UNARY_OPERATOR(_Op, _Name)                           \
  271.   template<class _Dom, typename _Tp>                                      \
  272.     inline _Expr<_UnClos<_Name,std::_Expr,_Dom>,_Tp>                      \
  273.     _Expr<_Dom,_Tp>::operator _Op() const                                 \
  274.     {                                                                     \
  275.       typedef _UnClos<_Name,std::_Expr,_Dom> _Closure;                    \
  276.       return _Expr<_Closure,_Tp>(_Closure(this->_M_closure));             \
  277.     }
  278.  
  279.     _DEFINE_EXPR_UNARY_OPERATOR(+, __unary_plus)
  280.     _DEFINE_EXPR_UNARY_OPERATOR(-, __negate)
  281.     _DEFINE_EXPR_UNARY_OPERATOR(~, __bitwise_not)
  282.  
  283. #undef _DEFINE_EXPR_UNARY_OPERATOR
  284.  
  285.  
  286. #define _DEFINE_EXPR_BINARY_OPERATOR(_Op, _Name)                        \
  287.   template<class _Dom1, class _Dom2>                    \
  288.   inline _Expr<_BinClos<_Name,_Expr,_Expr,_Dom1,_Dom2>,                 \
  289.          typename __fun<_Name, typename _Dom1::value_type>::result_type>\
  290.   operator _Op(const _Expr<_Dom1,typename _Dom1::value_type>& __v,      \
  291.            const _Expr<_Dom2,typename _Dom2::value_type>& __w)      \
  292.   {                                                                     \
  293.     typedef typename _Dom1::value_type _Arg;                            \
  294.     typedef typename __fun<_Name, _Arg>::result_type _Value;            \
  295.     typedef _BinClos<_Name,_Expr,_Expr,_Dom1,_Dom2> _Closure;           \
  296.     return _Expr<_Closure,_Value>(_Closure(__v(), __w()));              \
  297.   }                                                                     \
  298.                                                                         \
  299. template<class _Dom>                                                    \
  300. inline _Expr<_BinClos<_Name,_Expr,_Constant,_Dom,typename _Dom::value_type>,\
  301.              typename __fun<_Name, typename _Dom::value_type>::result_type>\
  302. operator _Op(const _Expr<_Dom,typename _Dom::value_type>& __v,          \
  303.              const typename _Dom::value_type& __t)                      \
  304. {                                                                       \
  305.   typedef typename _Dom::value_type _Arg;                               \
  306.   typedef typename __fun<_Name, _Arg>::result_type _Value;              \
  307.   typedef _BinClos<_Name,_Expr,_Constant,_Dom,_Arg> _Closure;           \
  308.   return _Expr<_Closure,_Value>(_Closure(__v(), __t));                  \
  309. }                                                                       \
  310.                                                                         \
  311. template<class _Dom>                                                    \
  312. inline _Expr<_BinClos<_Name,_Constant,_Expr,typename _Dom::value_type,_Dom>,\
  313.              typename __fun<_Name, typename _Dom::value_type>::result_type>\
  314. operator _Op(const typename _Dom::value_type& __t,                      \
  315.              const _Expr<_Dom,typename _Dom::value_type>& __v)          \
  316. {                                                                       \
  317.   typedef typename _Dom::value_type _Arg;                               \
  318.   typedef typename __fun<_Name, _Arg>::result_type _Value;              \
  319.   typedef _BinClos<_Name,_Constant,_Expr,_Arg,_Dom> _Closure;           \
  320.   return _Expr<_Closure,_Value>(_Closure(__t, __v()));                  \
  321. }                                                                       \
  322.                                                                         \
  323. template<class _Dom>                                                    \
  324. inline _Expr<_BinClos<_Name,_Expr,_ValArray,_Dom,typename _Dom::value_type>,\
  325.              typename __fun<_Name, typename _Dom::value_type>::result_type>\
  326. operator _Op(const _Expr<_Dom,typename _Dom::value_type>& __e,          \
  327.              const valarray<typename _Dom::value_type>& __v)            \
  328. {                                                                       \
  329.   typedef typename _Dom::value_type _Arg;                               \
  330.   typedef typename __fun<_Name, _Arg>::result_type _Value;              \
  331.   typedef _BinClos<_Name,_Expr,_ValArray,_Dom,_Arg> _Closure;           \
  332.   return  _Expr<_Closure,_Value>(_Closure(__e(), __v));                 \
  333. }                                                                       \
  334.                                                                         \
  335. template<class _Dom>                                                    \
  336. inline _Expr<_BinClos<_Name,_ValArray,_Expr,typename _Dom::value_type,_Dom>,\
  337.              typename __fun<_Name, typename _Dom::value_type>::result_type>\
  338. operator _Op(const valarray<typename _Dom::value_type>& __v,            \
  339.              const _Expr<_Dom,typename _Dom::value_type>& __e)          \
  340. {                                                                       \
  341.   typedef typename _Dom::value_type _Tp;                                \
  342.   typedef typename __fun<_Name, _Tp>::result_type _Value;               \
  343.   typedef _BinClos<_Name,_ValArray,_Expr,_Tp,_Dom> _Closure;            \
  344.   return _Expr<_Closure,_Value> (_Closure (__v, __e ()));               \
  345. }
  346.  
  347.     _DEFINE_EXPR_BINARY_OPERATOR(+, __plus)
  348.     _DEFINE_EXPR_BINARY_OPERATOR(-, __minus)
  349.     _DEFINE_EXPR_BINARY_OPERATOR(*, __multiplies)
  350.     _DEFINE_EXPR_BINARY_OPERATOR(/, __divides)
  351.     _DEFINE_EXPR_BINARY_OPERATOR(%, __modulus)
  352.     _DEFINE_EXPR_BINARY_OPERATOR(^, __bitwise_xor)
  353.     _DEFINE_EXPR_BINARY_OPERATOR(&, __bitwise_and)
  354.     _DEFINE_EXPR_BINARY_OPERATOR(|, __bitwise_or)
  355.     _DEFINE_EXPR_BINARY_OPERATOR(<<, __shift_left)
  356.     _DEFINE_EXPR_BINARY_OPERATOR(>>, __shift_right)
  357.     _DEFINE_EXPR_BINARY_OPERATOR(&&, __logical_and)
  358.     _DEFINE_EXPR_BINARY_OPERATOR(||, __logical_or)
  359.     _DEFINE_EXPR_BINARY_OPERATOR(==, __equal_to)
  360.     _DEFINE_EXPR_BINARY_OPERATOR(!=, __not_equal_to)
  361.     _DEFINE_EXPR_BINARY_OPERATOR(<, __less)
  362.     _DEFINE_EXPR_BINARY_OPERATOR(>, __greater)
  363.     _DEFINE_EXPR_BINARY_OPERATOR(<=, __less_equal)
  364.     _DEFINE_EXPR_BINARY_OPERATOR(>=, __greater_equal)
  365.  
  366. #undef _DEFINE_EXPR_BINARY_OPERATOR
  367.  
  368. #define _DEFINE_EXPR_UNARY_FUNCTION(_Name)                               \
  369.   template<class _Dom>                                                   \
  370.     inline _Expr<_UnClos<__##_Name,_Expr,_Dom>,typename _Dom::value_type>\
  371.     _Name(const _Expr<_Dom,typename _Dom::value_type>& __e)              \
  372.     {                                                                    \
  373.       typedef typename _Dom::value_type _Tp;                             \
  374.       typedef _UnClos<__##_Name,_Expr,_Dom> _Closure;                    \
  375.       return _Expr<_Closure,_Tp>(_Closure(__e()));                       \
  376.     }                                                                    \
  377.                                                                          \
  378.   template<typename _Tp>                                                 \
  379.     inline _Expr<_UnClos<__##_Name,_ValArray,_Tp>,_Tp>                   \
  380.     _Name(const valarray<_Tp>& __v)                                      \
  381.     {                                                                    \
  382.       typedef _UnClos<__##_Name,_ValArray,_Tp> _Closure;                 \
  383.       return _Expr<_Closure,_Tp>(_Closure(__v));                         \
  384.     }
  385.  
  386.     _DEFINE_EXPR_UNARY_FUNCTION(abs)
  387.     _DEFINE_EXPR_UNARY_FUNCTION(cos)
  388.     _DEFINE_EXPR_UNARY_FUNCTION(acos)
  389.     _DEFINE_EXPR_UNARY_FUNCTION(cosh)
  390.     _DEFINE_EXPR_UNARY_FUNCTION(sin)
  391.     _DEFINE_EXPR_UNARY_FUNCTION(asin)
  392.     _DEFINE_EXPR_UNARY_FUNCTION(sinh)
  393.     _DEFINE_EXPR_UNARY_FUNCTION(tan)
  394.     _DEFINE_EXPR_UNARY_FUNCTION(tanh)
  395.     _DEFINE_EXPR_UNARY_FUNCTION(atan)
  396.     _DEFINE_EXPR_UNARY_FUNCTION(exp)
  397.     _DEFINE_EXPR_UNARY_FUNCTION(log)
  398.     _DEFINE_EXPR_UNARY_FUNCTION(log10)
  399.     _DEFINE_EXPR_UNARY_FUNCTION(sqrt)
  400.  
  401. #undef _DEFINE_EXPR_UNARY_FUNCTION
  402.  
  403. #define _DEFINE_EXPR_BINARY_FUNCTION(_Fun)                             \
  404.   template<class _Dom1, class _Dom2>                                   \
  405.     inline _Expr<_BinClos<__##_Fun,_Expr,_Expr,_Dom1,_Dom2>,           \
  406.          typename _Dom1::value_type>                           \
  407.     _Fun(const _Expr<_Dom1,typename _Dom1::value_type>& __e1,          \
  408.       const _Expr<_Dom2,typename _Dom2::value_type>& __e2)         \
  409.     {                                                                  \
  410.       typedef typename _Dom1::value_type _Tp;                          \
  411.       typedef _BinClos<__##_Fun,_Expr,_Expr,_Dom1,_Dom2> _Closure;     \
  412.       return _Expr<_Closure,_Tp>(_Closure(__e1(), __e2()));            \
  413.     }                                                                  \
  414.                                                                        \
  415.   template<class _Dom>                                                 \
  416.     inline _Expr<_BinClos<__##_Fun, _Expr, _ValArray, _Dom,            \
  417.               typename _Dom::value_type>,                  \
  418.          typename _Dom::value_type>                            \
  419.     _Fun(const _Expr<_Dom,typename _Dom::value_type>& __e,             \
  420.      const valarray<typename _Dom::value_type>& __v)               \
  421.     {                                                                  \
  422.       typedef typename _Dom::value_type _Tp;                           \
  423.       typedef _BinClos<__##_Fun, _Expr, _ValArray, _Dom, _Tp> _Closure;\
  424.       return _Expr<_Closure,_Tp>(_Closure(__e(), __v));                \
  425.     }                                                                  \
  426.                                                                        \
  427.   template<class _Dom>                                                 \
  428.     inline _Expr<_BinClos<__##_Fun, _ValArray, _Expr,                  \
  429.               typename _Dom::value_type,_Dom>,             \
  430.          typename _Dom::value_type>                            \
  431.     _Fun(const valarray<typename _Dom::valarray>& __v,                 \
  432.      const _Expr<_Dom,typename _Dom::value_type>& __e)             \
  433.     {                                                                  \
  434.       typedef typename _Dom::value_type _Tp;                           \
  435.       typedef _BinClos<__##_Fun,_ValArray,_Expr,_Tp,_Dom> _Closure;    \
  436.       return _Expr<_Closure,_Tp>(_Closure(__v, __e()));                \
  437.     }                                                                  \
  438.                                                                        \
  439.   template<class _Dom>                                                 \
  440.     inline _Expr<_BinClos<__##_Fun,_Expr,_Constant,_Dom,               \
  441.               typename _Dom::value_type>,                  \
  442.          typename _Dom::value_type>                            \
  443.     _Fun(const _Expr<_Dom, typename _Dom::value_type>& __e,            \
  444.      const typename _Dom::value_type& __t)                         \
  445.     {                                                                  \
  446.       typedef typename _Dom::value_type _Tp;                           \
  447.       typedef _BinClos<__##_Fun,_Expr,_Constant,_Dom,_Tp> _Closure;    \
  448.       return _Expr<_Closure,_Tp>(_Closure(__e(), __t));                \
  449.     }                                                                  \
  450.                                                                        \
  451.   template<class _Dom>                                                 \
  452.     inline _Expr<_BinClos<__##_Fun,_Constant,_Expr,                    \
  453.               typename _Dom::value_type,_Dom>,             \
  454.          typename _Dom::value_type>                            \
  455.     _Fun(const typename _Dom::value_type& __t,                         \
  456.      const _Expr<_Dom,typename _Dom::value_type>& __e)             \
  457.     {                                                                  \
  458.       typedef typename _Dom::value_type _Tp;                           \
  459.       typedef _BinClos<__##_Fun, _Constant,_Expr,_Tp,_Dom> _Closure;   \
  460.       return _Expr<_Closure,_Tp>(_Closure(__t, __e()));                \
  461.     }                                                                  \
  462.                                                                        \
  463.   template<typename _Tp>                                               \
  464.     inline _Expr<_BinClos<__##_Fun,_ValArray,_ValArray,_Tp,_Tp>, _Tp>  \
  465.     _Fun(const valarray<_Tp>& __v, const valarray<_Tp>& __w)           \
  466.     {                                                                  \
  467.       typedef _BinClos<__##_Fun,_ValArray,_ValArray,_Tp,_Tp> _Closure; \
  468.       return _Expr<_Closure,_Tp>(_Closure(__v, __w));                  \
  469.     }                                                                  \
  470.                                                                        \
  471.   template<typename _Tp>                                               \
  472.     inline _Expr<_BinClos<__##_Fun,_ValArray,_Constant,_Tp,_Tp>,_Tp>   \
  473.     _Fun(const valarray<_Tp>& __v, const _Tp& __t)                     \
  474.     {                                                                  \
  475.       typedef _BinClos<__##_Fun,_ValArray,_Constant,_Tp,_Tp> _Closure; \
  476.       return _Expr<_Closure,_Tp>(_Closure(__v, __t));                  \
  477.     }                                                                  \
  478.                                        \
  479.   template<typename _Tp>                                               \
  480.     inline _Expr<_BinClos<__##_Fun,_Constant,_ValArray,_Tp,_Tp>,_Tp>   \
  481.     _Fun(const _Tp& __t, const valarray<_Tp>& __v)                     \
  482.     {                                                                  \
  483.       typedef _BinClos<__##_Fun,_Constant,_ValArray,_Tp,_Tp> _Closure; \
  484.       return _Expr<_Closure,_Tp>(_Closure(__t, __v));                  \
  485.     }
  486.  
  487. _DEFINE_EXPR_BINARY_FUNCTION(atan2)
  488. _DEFINE_EXPR_BINARY_FUNCTION(pow)
  489.  
  490. #undef _DEFINE_EXPR_BINARY_FUNCTION
  491.  
  492. } // std::
  493.  
  494.  
  495. #endif /* _CPP_VALARRAY_AFTER_H */
  496.  
  497. // Local Variables:
  498. // mode:c++
  499. // End:
  500.