// functional standard header
#pragma once
#ifndef _FUNCTIONAL_
#define _FUNCTIONAL_
#ifndef RC_INVOKED
#include <cstdlib>
#include <xstring>

#ifdef _MSC_VER
 #pragma pack(push,_CRT_PACKING)
 #pragma warning(push,3)
 #pragma warning(disable: 4244)
#endif  /* _MSC_VER */

_STD_BEGIN

		// TEMPLATE STRUCT unary_function
template<class _Arg,
	class _Result>
	struct unary_function
	{	// base class for unary functions
	typedef _Arg argument_type;
	typedef _Result result_type;
	};

		// TEMPLATE STRUCT binary_function
template<class _Arg1,
	class _Arg2,
	class _Result>
	struct binary_function
	{	// base class for binary functions
	typedef _Arg1 first_argument_type;
	typedef _Arg2 second_argument_type;
	typedef _Result result_type;
	};

		// TEMPLATE STRUCT plus
template<class _Ty>
	struct plus
		: public binary_function<_Ty, _Ty, _Ty>
	{	// functor for operator+
	_Ty operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator+ to operands
		return (_Left + _Right);
		}
	};

		// TEMPLATE STRUCT minus
template<class _Ty>
	struct minus
		: public binary_function<_Ty, _Ty, _Ty>
	{	// functor for operator-
	_Ty operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator- to operands
		return (_Left - _Right);
		}
	};

		// TEMPLATE STRUCT multiplies
template<class _Ty>
	struct multiplies
		: public binary_function<_Ty, _Ty, _Ty>
	{	// functor for operator*
	_Ty operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator* to operands
		return (_Left * _Right);
		}
	};

		// TEMPLATE STRUCT divides
template<class _Ty>
	struct divides
		: public binary_function<_Ty, _Ty, _Ty>
	{	// functor for operator/
	_Ty operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator/ to operands
		return (_Left / _Right);
		}
	};

		// TEMPLATE STRUCT modulus
template<class _Ty>
	struct modulus
		: public binary_function<_Ty, _Ty, _Ty>
	{	// functor for operator%
	_Ty operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator% to operands
		return (_Left % _Right);
		}
	};

		// TEMPLATE STRUCT negate
template<class _Ty>
	struct negate
		: public unary_function<_Ty, _Ty>
	{	// functor for unary operator-
	_Ty operator()(const _Ty& _Left) const
		{	// apply operator- to operand
		return (-_Left);
		}
	};

		// TEMPLATE STRUCT equal_to
template<class _Ty>
	struct equal_to
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator==
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator== to operands
		return (_Left == _Right);
		}
	};

		// TEMPLATE STRUCT not_equal_to
template<class _Ty>
	struct not_equal_to
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator!=
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator!= to operands
		return (_Left != _Right);
		}
	};

		// TEMPLATE STRUCT greater
template<class _Ty>
	struct greater
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator>
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator> to operands
		return (_Left > _Right);
		}
	};

		// TEMPLATE STRUCT less
template<class _Ty>
	struct less
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator<
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator< to operands
		return (_Left < _Right);
		}
	};

		// TEMPLATE STRUCT greater_equal
template<class _Ty>
	struct greater_equal
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator>=
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator>= to operands
		return (_Left >= _Right);
		}
	};

		// TEMPLATE STRUCT less_equal
template<class _Ty>
	struct less_equal
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator<=
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator<= to operands
		return (_Left <= _Right);
		}
	};

		// TEMPLATE STRUCT logical_and
template<class _Ty>
	struct logical_and
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator&&
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator&& to operands
		return (_Left && _Right);
		}
	};

		// TEMPLATE STRUCT logical_or
template<class _Ty>
	struct logical_or
		: public binary_function<_Ty, _Ty, bool>
	{	// functor for operator||
	bool operator()(const _Ty& _Left, const _Ty& _Right) const
		{	// apply operator|| to operands
		return (_Left || _Right);
		}
	};

		// TEMPLATE STRUCT logical_not
template<class _Ty>
	struct logical_not
		: public unary_function<_Ty, bool>
	{	// functor for unary operator!
	bool operator()(const _Ty& _Left) const
		{	// apply operator! to operand
		return (!_Left);
		}
	};

		// TEMPLATE CLASS unary_negate
template<class _Fn1>
	class unary_negate
	: public unary_function<typename _Fn1::argument_type, bool>
	{	// functor adapter !_Func(left)
public:
	explicit unary_negate(const _Fn1& _Func)
		: _Functor(_Func)
		{	// construct from functor
		}

	bool operator()(const typename _Fn1::argument_type& _Left) const
		{	// apply functor to operand
		return (!_Functor(_Left));
		}

protected:
	_Fn1 _Functor;	// the functor to apply
	};

		// TEMPLATE FUNCTION not1
template<class _Fn1> inline
	unary_negate<_Fn1> not1(const _Fn1& _Func)
	{	// return a unary_negate functor adapter
	return (std::unary_negate<_Fn1>(_Func));
	}

		// TEMPLATE CLASS binary_negate
template<class _Fn2>
	class binary_negate
		: public binary_function<typename _Fn2::first_argument_type,
			typename _Fn2::second_argument_type, bool>
	{	// functor adapter !_Func(left, right)
public:
	explicit binary_negate(const _Fn2& _Func)
		: _Functor(_Func)
		{	// construct from functor
		}

	bool operator()(const typename _Fn2::first_argument_type& _Left,
		const typename _Fn2::second_argument_type& _Right) const
		{	// apply functor to operands
		return (!_Functor(_Left, _Right));
		}

protected:
	_Fn2 _Functor;	// the functor to apply
	};

		// TEMPLATE FUNCTION not2
template<class _Fn2> inline
	binary_negate<_Fn2> not2(const _Fn2& _Func)
	{	// return a binary_negate functor adapter
	return (std::binary_negate<_Fn2>(_Func));
	}

		// TEMPLATE CLASS binder1st
template<class _Fn2>
	class binder1st
		: public unary_function<typename _Fn2::second_argument_type,
			typename _Fn2::result_type>
	{	// functor adapter _Func(stored, right)
public:
	typedef unary_function<typename _Fn2::second_argument_type,
		typename _Fn2::result_type> _Base;
	typedef typename _Base::argument_type argument_type;
	typedef typename _Base::result_type result_type;

	binder1st(const _Fn2& _Func,
		const typename _Fn2::first_argument_type& _Left)
		: op(_Func), value(_Left)
		{	// construct from functor and left operand
		}

	result_type operator()(const argument_type& _Right) const
		{	// apply functor to operands
		return (op(value, _Right));
		}

	result_type operator()(argument_type& _Right) const
		{	// apply functor to operands
		return (op(value, _Right));
		}

protected:
	_Fn2 op;	// the functor to apply
	typename _Fn2::first_argument_type value;	// the left operand
	};

		// TEMPLATE FUNCTION bind1st
template<class _Fn2,
	class _Ty> inline
	binder1st<_Fn2> bind1st(const _Fn2& _Func, const _Ty& _Left)
		{	// return a binder1st functor adapter
		typename _Fn2::first_argument_type _Val(_Left);
		return (std::binder1st<_Fn2>(_Func, _Val));
		}

		// TEMPLATE CLASS binder2nd
template<class _Fn2>
	class binder2nd
		: public unary_function<typename _Fn2::first_argument_type,
			typename _Fn2::result_type>
	{	// functor adapter _Func(left, stored)
public:
	typedef unary_function<typename _Fn2::first_argument_type,
		typename _Fn2::result_type> _Base;
	typedef typename _Base::argument_type argument_type;
	typedef typename _Base::result_type result_type;

	binder2nd(const _Fn2& _Func,
		const typename _Fn2::second_argument_type& _Right)
		: op(_Func), value(_Right)
		{	// construct from functor and right operand
		}

	result_type operator()(const argument_type& _Left) const
		{	// apply functor to operands
		return (op(_Left, value));
		}

	result_type operator()(argument_type& _Left) const
		{	// apply functor to operands
		return (op(_Left, value));
		}

protected:
	_Fn2 op;	// the functor to apply
	typename _Fn2::second_argument_type value;	// the right operand
	};

		// TEMPLATE FUNCTION bind2nd
template<class _Fn2,
	class _Ty> inline
	binder2nd<_Fn2> bind2nd(const _Fn2& _Func, const _Ty& _Right)
	{	// return a binder2nd functor adapter
	typename _Fn2::second_argument_type _Val(_Right);
	return (std::binder2nd<_Fn2>(_Func, _Val));
	}

		// TEMPLATE CLASS pointer_to_unary_function
template<class _Arg,
	class _Result,
	class _Fn = _Result (*)(_Arg)>
	class pointer_to_unary_function
		: public unary_function<_Arg, _Result>
	{	// functor adapter (*pfunc)(left)
public:
	explicit pointer_to_unary_function(_Fn _Left)
		: _Pfun(_Left)
		{	// construct from pointer
		}

	_Result operator()(_Arg _Left) const
		{	// call function with operand
		return (_Pfun(_Left));
		}

protected:
	_Fn _Pfun;	// the function pointer
	};

		// TEMPLATE CLASS pointer_to_binary_function
template<class _Arg1,
	class _Arg2,
	class _Result,
	class _Fn = _Result (*)(_Arg1, _Arg2)>
	class pointer_to_binary_function
		: public binary_function<_Arg1, _Arg2, _Result>
	{	// functor adapter (*pfunc)(left, right)
public:
	explicit pointer_to_binary_function(_Fn _Left)
		: _Pfun(_Left)
		{	// construct from pointer
		}

	_Result operator()(_Arg1 _Left, _Arg2 _Right) const
		{	// call function with operands
		return (_Pfun(_Left, _Right));
		}

protected:
	_Fn _Pfun;	// the function pointer
	};

		// TEMPLATE FUNCTION ptr_fun
template<class _Arg,
	class _Result> inline
	pointer_to_unary_function<_Arg, _Result, _Result (__cdecl *)(_Arg)>
		ptr_fun(_Result (__cdecl *_Left)(_Arg))
	{	// return pointer_to_unary_function functor adapter
	return (std::pointer_to_unary_function<_Arg, _Result, _Result (__cdecl *)(_Arg)>(_Left));
	}

 #ifdef _M_IX86
template<class _Arg,
	class _Result> inline
	pointer_to_unary_function<_Arg, _Result,
		_Result (__stdcall *)(_Arg)>
			ptr_fun(_Result (__stdcall *_Left)(_Arg))
	{	// return pointer_to_unary_function functor adapter
	return (std::pointer_to_unary_function<_Arg, _Result, _Result (__stdcall *)(_Arg)>(_Left));
	}

#ifndef _M_CEE
template<class _Arg,
	class _Result> inline
	pointer_to_unary_function<_Arg, _Result,
		_Result (__fastcall *)(_Arg)>
			ptr_fun(_Result (__fastcall *_Left)(_Arg))
	{	// return pointer_to_unary_function functor adapter
	return (std::pointer_to_unary_function<_Arg, _Result, _Result (__fastcall *)(_Arg)>(_Left));
	}

#endif
#endif

#ifdef _M_CEE
template<class _Arg,
	class _Result> inline
	pointer_to_unary_function<_Arg, _Result,
		_Result (__clrcall *)(_Arg)>
			ptr_fun(_Result (__clrcall *_Left)(_Arg))
	{	// return pointer_to_unary_function functor adapter
	return (std::pointer_to_unary_function<_Arg, _Result, _Result (__clrcall *)(_Arg)>(_Left));
	}
#endif

template<class _Arg1,
	class _Arg2,
	class _Result> inline
	pointer_to_binary_function<_Arg1, _Arg2, _Result, _Result(__cdecl *)(_Arg1, _Arg2)>
		ptr_fun(_Result (__cdecl *_Left)(_Arg1, _Arg2))
	{	// return pointer_to_binary_function functor adapter
	return (std::pointer_to_binary_function<_Arg1, _Arg2, _Result, _Result (__cdecl *)(_Arg1, _Arg2)>(_Left));
	}

 #ifdef _M_IX86
template<class _Arg1,
	class _Arg2,
	class _Result> inline
	pointer_to_binary_function<_Arg1, _Arg2, _Result,
		_Result(__stdcall *)(_Arg1, _Arg2)>
			ptr_fun(_Result (__stdcall *_Left)(_Arg1, _Arg2))
	{	// return pointer_to_binary_function functor adapter
	return (std::pointer_to_binary_function<_Arg1, _Arg2, _Result,
		_Result (__stdcall *)(_Arg1, _Arg2)>(_Left));
	}

#ifndef _M_CEE

template<class _Arg1,
	class _Arg2,
	class _Result> inline
	pointer_to_binary_function<_Arg1, _Arg2, _Result,
		_Result(__fastcall *)(_Arg1, _Arg2)>
			ptr_fun(_Result (__fastcall *_Left)(_Arg1, _Arg2))
	{	// return pointer_to_binary_function functor adapter
	return (std::pointer_to_binary_function<_Arg1, _Arg2, _Result,
		_Result (__fastcall *)(_Arg1, _Arg2)>(_Left));
	}

#endif
#endif

#ifdef _M_CEE
template<class _Arg1,
	class _Arg2,
	class _Result> inline
	pointer_to_binary_function<_Arg1, _Arg2, _Result,
		_Result(__clrcall *)(_Arg1, _Arg2)>
			ptr_fun(_Result (__clrcall *_Left)(_Arg1, _Arg2))
	{	// return pointer_to_binary_function functor adapter
	return (std::pointer_to_binary_function<_Arg1, _Arg2, _Result,
		_Result (__clrcall *)(_Arg1, _Arg2)>(_Left));
	}

#endif

		// TEMPLATE CLASS mem_fun_t
template<class _Result,
	class _Ty>
	class mem_fun_t
		: public unary_function<_Ty *, _Result>
	{	// functor adapter (*p->*pfunc)(), non-const *pfunc
public:
	explicit mem_fun_t(_Result (_Ty::*_Pm)())
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(_Ty *_Pleft) const
		{	// call function
		return ((_Pleft->*_Pmemfun)());
		}

private:
	_Result (_Ty::*_Pmemfun)();	// the member function pointer
	};

		// TEMPLATE CLASS mem_fun1_t
template<class _Result,
	class _Ty,
	class _Arg>
	class mem_fun1_t
		: public binary_function<_Ty *, _Arg, _Result>
	{	// functor adapter (*p->*pfunc)(val), non-const *pfunc
public:
	explicit mem_fun1_t(_Result (_Ty::*_Pm)(_Arg))
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(_Ty *_Pleft, _Arg _Right) const
		{	// call function with operand
		return ((_Pleft->*_Pmemfun)(_Right));
		}

private:
	_Result (_Ty::*_Pmemfun)(_Arg);	// the member function pointer
	};

		// TEMPLATE CLASS const_mem_fun_t
template<class _Result,
	class _Ty>
	class const_mem_fun_t
		: public unary_function<const _Ty *, _Result>
	{	// functor adapter (*p->*pfunc)(), const *pfunc
public:
	explicit const_mem_fun_t(_Result (_Ty::*_Pm)() const)
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(const _Ty *_Pleft) const
		{	// call function
		return ((_Pleft->*_Pmemfun)());
		}

private:
	_Result (_Ty::*_Pmemfun)() const;	// the member function pointer
	};

		// TEMPLATE CLASS const_mem_fun1_t
template<class _Result,
	class _Ty,
	class _Arg>
	class const_mem_fun1_t
		: public binary_function<const _Ty *, _Arg, _Result>
	{	// functor adapter (*p->*pfunc)(val), const *pfunc
public:
	explicit const_mem_fun1_t(_Result (_Ty::*_Pm)(_Arg) const)
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(const _Ty *_Pleft, _Arg _Right) const
		{	// call function with operand
		return ((_Pleft->*_Pmemfun)(_Right));
		}

private:
	_Result (_Ty::*_Pmemfun)(_Arg) const;	// the member function pointer
	};

		// TEMPLATE FUNCTION mem_fun
template<class _Result,
	class _Ty> inline
	mem_fun_t<_Result, _Ty> mem_fun(_Result (_Ty::*_Pm)())
	{	// return a mem_fun_t functor adapter
	return (std::mem_fun_t<_Result, _Ty>(_Pm));
	}

template<class _Result,
	class _Ty,
	class _Arg> inline
	mem_fun1_t<_Result, _Ty, _Arg> mem_fun(_Result (_Ty::*_Pm)(_Arg))
	{	// return a mem_fun1_t functor adapter
	return (std::mem_fun1_t<_Result, _Ty, _Arg>(_Pm));
	}

template<class _Result,
	class _Ty> inline
	const_mem_fun_t<_Result, _Ty>
		mem_fun(_Result (_Ty::*_Pm)() const)
	{	// return a const_mem_fun_t functor adapter
	return (std::const_mem_fun_t<_Result, _Ty>(_Pm));
	}

template<class _Result,
	class _Ty,
	class _Arg> inline
	const_mem_fun1_t<_Result, _Ty, _Arg>
		mem_fun(_Result (_Ty::*_Pm)(_Arg) const)
	{	// return a const_mem_fun1_t functor adapter
	return (std::const_mem_fun1_t<_Result, _Ty, _Arg>(_Pm));
	}

		// TEMPLATE FUNCTION mem_fun1 (retained)
template<class _Result,
	class _Ty,
	class _Arg> inline
	mem_fun1_t<_Result, _Ty, _Arg> mem_fun1(_Result (_Ty::*_Pm)(_Arg))
	{	// return a mem_fun1_t functor adapter
	return (std::mem_fun1_t<_Result, _Ty, _Arg>(_Pm));
	}

		// TEMPLATE CLASS mem_fun_ref_t
template<class _Result,
	class _Ty>
	class mem_fun_ref_t
		: public unary_function<_Ty, _Result>
	{	// functor adapter (*left.*pfunc)(), non-const *pfunc
public:
	explicit mem_fun_ref_t(_Result (_Ty::*_Pm)())
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(_Ty& _Left) const
		{	// call function
		return ((_Left.*_Pmemfun)());
		}

private:
	_Result (_Ty::*_Pmemfun)();	// the member function pointer
	};

		// TEMPLATE CLASS mem_fun1_ref_t
template<class _Result,
	class _Ty,
	class _Arg>
	class mem_fun1_ref_t
		: public binary_function<_Ty, _Arg, _Result>
	{	// functor adapter (*left.*pfunc)(val), non-const *pfunc
public:
	explicit mem_fun1_ref_t(_Result (_Ty::*_Pm)(_Arg))
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(_Ty& _Left, _Arg _Right) const
		{	// call function with operand
		return ((_Left.*_Pmemfun)(_Right));
		}

private:
	_Result (_Ty::*_Pmemfun)(_Arg);	// the member function pointer
	};

		// TEMPLATE CLASS const_mem_fun_ref_t
template<class _Result,
	class _Ty>
	class const_mem_fun_ref_t
		: public unary_function<_Ty, _Result>
	{	// functor adapter (*left.*pfunc)(), const *pfunc
public:
	explicit const_mem_fun_ref_t(_Result (_Ty::*_Pm)() const)
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(const _Ty& _Left) const
		{	// call function
		return ((_Left.*_Pmemfun)());
		}

private:
	_Result (_Ty::*_Pmemfun)() const;	// the member function pointer
	};

		// TEMPLATE CLASS const_mem_fun1_ref_t
template<class _Result,
	class _Ty,
	class _Arg>
	class const_mem_fun1_ref_t
		: public binary_function<_Ty, _Arg, _Result>
	{	// functor adapter (*left.*pfunc)(val), const *pfunc
public:
	explicit const_mem_fun1_ref_t(_Result (_Ty::*_Pm)(_Arg) const)
		: _Pmemfun(_Pm)
		{	// construct from pointer
		}

	_Result operator()(const _Ty& _Left, _Arg _Right) const
		{	// call function with operand
		return ((_Left.*_Pmemfun)(_Right));
		}

private:
	_Result (_Ty::*_Pmemfun)(_Arg) const;	// the member function pointer
	};

		// TEMPLATE FUNCTION mem_fun_ref
template<class _Result,
	class _Ty> inline
	mem_fun_ref_t<_Result, _Ty> mem_fun_ref(_Result (_Ty::*_Pm)())
	{	// return a mem_fun_ref_t functor adapter
	return (std::mem_fun_ref_t<_Result, _Ty>(_Pm));
	}

template<class _Result,
	class _Ty,
	class _Arg> inline
	mem_fun1_ref_t<_Result, _Ty, _Arg>
		mem_fun_ref(_Result (_Ty::*_Pm)(_Arg))
	{	// return a mem_fun1_ref_t functor adapter
	return (std::mem_fun1_ref_t<_Result, _Ty, _Arg>(_Pm));
	}

template<class _Result,
	class _Ty> inline
	const_mem_fun_ref_t<_Result, _Ty>
		mem_fun_ref(_Result (_Ty::*_Pm)() const)
	{	// return a const_mem_fun_ref_t functor adapter
	return (std::const_mem_fun_ref_t<_Result, _Ty>(_Pm));
	}

template<class _Result,
	class _Ty,
	class _Arg> inline
	const_mem_fun1_ref_t<_Result, _Ty, _Arg>
		mem_fun_ref(_Result (_Ty::*_Pm)(_Arg) const)
	{	// return a const_mem_fun1_ref_t functor adapter
	return (std::const_mem_fun1_ref_t<_Result, _Ty, _Arg>(_Pm));
	}

		// TEMPLATE FUNCTION mem_fun1_ref (retained)
template<class _Result,
	class _Ty,
	class _Arg> inline
	mem_fun1_ref_t<_Result, _Ty, _Arg> mem_fun1_ref(_Result (_Ty::*_Pm)(_Arg))
	{	// return a mem_fun1_ref_t functor adapter
	return (std::mem_fun1_ref_t<_Result, _Ty, _Arg>(_Pm));
	}

 #if _HAS_TRADITIONAL_STL
		// TEMPLATE STRUCT identity
template<class _Arg>
	struct identity
		: public unary_function<_Arg, _Arg>
	{	// functor for unary identity operator
	_Arg operator()(const _Arg& _Left) const
		{	// apply identity operator to operand
		return (_Left);
		}
	};

		// TEMPLATE STRUCT project1st
template<class _Arg1,
	class _Arg2>
	struct project1st
		: public binary_function<_Arg1, _Arg2, _Arg1>
	{	// functor for binary first of two arg selector operator
	_Arg1 operator()(const _Arg1& _Left, const _Arg2&) const
		{	// apply first selector operator to two operands
		return (_Left);
		}
	};

		// TEMPLATE STRUCT project2nd
template<class _Arg1,
	class _Arg2>
	struct project2nd
		: public binary_function<_Arg1, _Arg2, _Arg2>
	{	// functor for binary second of two arg selector operator
	_Arg2 operator()(const _Arg1&, const _Arg2& _Right) const
		{	// apply second selector operator to two operands
		return (_Right);
		}
	};

		// TEMPLATE STRUCT select1st
template<class _Pair>
	struct select1st
		: public unary_function<_Pair, typename _Pair::first_type>
	{	// functor for unary first of pair selector operator
	const typename _Pair::first_type& operator()(const _Pair& _Left) const
		{	// apply first selector operator to pair operand
		return (_Left.first);
		}
	};

		// TEMPLATE STRUCT select2nd
template<class _Pair>
	struct select2nd
		: public unary_function<_Pair, typename _Pair::second_type>
	{	// functor for unary second of pair selector operator
	const typename _Pair::second_type& operator()(const _Pair& _Left) const
		{	// apply second selector operator to pair operand
		return (_Left.second);
		}
	};

		// TEMPLATE CLASS unary_compose
template<class _Fn1,
	class _Fn2>
	class unary_compose
		: public unary_function<typename _Fn2::argument_type,
			typename _Fn1::result_type>
	{	// functor for f1(f2(x))
public:
	unary_compose(const _Fn1& _Func1, const _Fn2& _Func2)
		: _Functor1(_Func1), _Functor2(_Func2)
		{	// construct from functors
		}

	typename _Fn1::result_type operator()(
		const typename _Fn2::argument_type& _Left) const
		{	// apply functors to operand
		return (_Functor1(_Functor2(_Left)));
		}

protected:
	_Fn1 _Functor1;
	_Fn2 _Functor2;
	};

		// TEMPLATE FUNCTION compose1
template<class _Fn1,
	class _Fn2> inline
	unary_compose<_Fn1, _Fn2> compose1(const _Fn1& _Func1,
		const _Fn2& _Func2)
	{	// return a unary_compose<_Fn1, _Fn2> functor adapter
	return (unary_compose<_Fn1, _Fn2>(_Func1, _Func2));
	}

		// TEMPLATE CLASS binary_compose
template<class _Fn1,
	class _Fn2,
	class _Fn3>
	class binary_compose
		: public unary_function<typename _Fn2::argument_type,
			typename _Fn1::result_type>
	{	// functor for f1(f2(x), f3(x))
public:
	binary_compose(const _Fn1& _Func1, const _Fn2& _Func2, const _Fn3& _Func3)
		: _Functor1(_Func1), _Functor2(_Func2), _Functor3(_Func3)
		{	// construct from functors
		}

	typename _Fn1::result_type operator()(
		const typename _Fn2::argument_type& _Left) const
		{	// apply functors to operand
		return (_Functor1(_Functor2(_Left), _Functor3(_Left)));
		}

protected:
	_Fn1 _Functor1;
	_Fn2 _Functor2;
	_Fn3 _Functor3;
	};

		// TEMPLATE FUNCTION compose2
template<class _Fn1,
	class _Fn2,
	class _Fn3> inline
	binary_compose<_Fn1, _Fn2, _Fn3> compose2(const _Fn1& _Func1,
		const _Fn2& _Func2, const _Fn3& _Func3)
	{	// return a binary_compose<_Fn1, _Fn2, _Fn3> functor adapter
	return (binary_compose<_Fn1, _Fn2, _Fn3>(_Func1, _Func2, _Func3));
	}
 #endif /* _HAS_TRADITIONAL_STL */

_STD_END

_STD_BEGIN
	namespace tr1 {	// always include std::tr1::hash for unordered_map/set
	// TEMPLATE CLASS hash
template<class _Kty>
	class hash
		: public unary_function<_Kty, size_t>
	{	// hash functor
public:
	size_t operator()(const _Kty& _Keyval) const
		{	// hash _Keyval to size_t value by pseudorandomizing transform
		ldiv_t _Qrem = ldiv((size_t)_Keyval, 127773);

		_Qrem.rem = 16807 * _Qrem.rem - 2836 * _Qrem.quot;
		if (_Qrem.rem < 0)
			_Qrem.rem += 2147483647;
		return ((size_t)_Qrem.rem);
		}
	};

template<>
	class hash<std::string>
	{	// hash functor
public:
	typedef std::string _Kty;

	size_t operator()(const _Kty& _Keyval) const
		{	// hash _Keyval to size_t value by pseudorandomizing transform
		size_t _Val = 2166136261U;
		size_t _First = 0;
		size_t _Last = _Keyval.size();
		size_t _Stride = 1 + _Last / 10;

		if (_Stride < _Last)
			_Last -= _Stride;
		for(; _First < _Last; _First += _Stride)
			_Val = 16777619U * _Val ^ (size_t)_Keyval[_First];
		return (_Val);
		}
	};

template<>
	class hash<std::wstring>
	{	// hash functor
public:
	typedef std::wstring _Kty;

	size_t operator()(const _Kty& _Keyval) const
		{	// hash _Keyval to size_t value by pseudorandomizing transform
		size_t _Val = 2166136261U;
		size_t _First = 0;
		size_t _Last = _Keyval.size();
		size_t _Stride = 1 + _Last / 10;

		if (_Stride < _Last)
			_Last -= _Stride;
		for(; _First < _Last; _First += _Stride)
			_Val = 16777619U * _Val ^ (size_t)_Keyval[_First];
		return (_Val);
		}
	};

	}	// namespace tr1
_STD_END

#ifdef _MSC_VER
 #pragma warning(default: 4244)
 #pragma warning(pop)
 #pragma pack(pop)
#endif  /* _MSC_VER */

#endif /* RC_INVOKED */
#endif /* _FUNCTIONAL_ */

/*
 * This file is derived from software bearing the following
 * restrictions:
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this
 * software and its documentation for any purpose is hereby
 * granted without fee, provided that the above copyright notice
 * appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation.
 * Hewlett-Packard Company makes no representations about the
 * suitability of this software for any purpose. It is provided
 * "as is" without express or implied warranty.
 */

/*
 * Copyright (c) 1992-2007 by P.J. Plauger.  ALL RIGHTS RESERVED.
 * Consult your license regarding permissions and restrictions.
 V5.03:0009 */