// functional standard header
#pragma once
#ifndef _FUNCTIONAL_
#define _FUNCTIONAL_
#include <xstddef>

#pragma pack(push,8)
#pragma warning(push,3)

 #pragma warning(disable: 4244)
_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 pointer_to_unary_function
		: public unary_function<_Arg, _Result>
	{	// functor adapter (*pfunc)(left)
public:
	explicit pointer_to_unary_function(_Result (__cdecl *_Left)(_Arg))
		: _Pfun(_Left)
		{	// construct from pointer
		}

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

protected:
	_Result (__cdecl *_Pfun)(_Arg);	// the function pointer
	};

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

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

protected:
	_Result (__cdecl *_Pfun)(_Arg1, _Arg2);	// the function pointer
	};

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

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

		// 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));
	}
_STD_END

  #pragma warning(default: 4244)

#pragma warning(pop)
#pragma pack(pop)

#endif /* _FUNCTIONAL_ */

/*
 * Copyright (c) 1992-2002 by P.J. Plauger.  ALL RIGHTS RESERVED.
 * Consult your license regarding permissions and restrictions.
 */

/*
 * 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.
 V3.13:0009 */
