//  IBM_PROLOG_BEGIN_TAG
//  This is an automatically generated prolog.
//
//  $Source: src/include/functional $
//
//  IBM CONFIDENTIAL
//
//  COPYRIGHT International Business Machines Corp. 2011
//
//  p1
//
//  Object Code Only (OCO) source materials
//  Licensed Internal Code Source Materials
//  IBM HostBoot Licensed Internal Code
//
//  The source code for this program is not published or other-
//  wise divested of its trade secrets, irrespective of what has
//  been deposited with the U.S. Copyright Office.
//
//  Origin: 30
//
//  IBM_PROLOG_END
#ifndef _FUNCTIONAL_H
#define _FUNCTIONAL_H

// See C++ spec

namespace std
{
    template<typename A1, typename A2, typename R>
        struct binary_function
        {
            typedef A1 first_argument_type;   ///< type of the first argument
            typedef A2 second_argument_type;  ///< type of the second argument
            typedef R result_type;            ///< type of the return type
        };

    /**
     * less template
     */
    template<typename T>
        struct less : public binary_function<T, T, bool>
    {
        /**
         * operator()
         * @param[in] x first object
         * @param[in] y second object
         * @return true if x < y otherwise false
         */
        bool operator()(const T& x, const T& y) const
        {
            return x < y;
        }
    };

    template<typename T>
        struct greater : public binary_function<T, T, bool>
    {
        /**
         * operator()
         * @param[in] x first object
         * @param[in] y second object
         * @return true if x > y otherwise false
         */
        bool operator()(const T& x, const T& y) const
            { return x > y; }
    };


};
#endif
/* vim: set filetype=cpp : */