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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/utility $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* Contributors Listed Below - COPYRIGHT 2011,2016 */
/* [+] International Business Machines Corp. */
/* */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef STL_UTILITY
#define STL_UTILITY
#include <type_traits>
namespace std
{
/**
* Standard template pair
* See the C++ spec
*/
template <typename T1, typename T2>
struct pair
{
typedef T1 first_type;
typedef T2 second_type;
T1 first;
T2 second;
constexpr pair() : first(T1()), second(T2()) {}
constexpr pair(const T1 & x, const T2 & y) : first(x), second(y) {}
template <typename U, typename V>
pair (const pair<U,V> & p) : first(p.first), second(p.second) {}
};
/**
* Wrapper for creating a pair
* @param[in] x The first object
* @param[in] y The second object
* @return a newly-constructed pair<> object
*/
template <typename T1, typename T2> __attribute__ ((always_inline))
inline pair<T1,T2> make_pair (T1 x, T2 y)
{
return ( pair<T1,T2>(x,y) );
}
/**
* pair eq comparison
* @param[in] x The first object
* @param[in] y The second object
* @return true if x is strictly eq y
*/
template <typename T1, typename T2> __attribute__ ((always_inline))
inline bool operator==(const pair<T1, T2>& x, const pair<T1, T2>& y)
{
return x.first == y.first && x.second == y.second;
}
/**
* pair lt comparison
* @param[in] x The first object
* @param[in] y The second object
* @return true if x < y
*/
template<typename T1, typename T2> __attribute__ ((always_inline))
inline bool operator<(const pair<T1, T2>& x, const pair<T1, T2>& y)
{
return (x.first < y.first) ||
(!(y.first < x.first) && x.second < y.second);
}
/**
* pair ne comparison
* @param[in] x The first object
* @param[in] y The second object
* @return true if x != y
*/
template<typename T1, typename T2> __attribute__ ((always_inline))
inline bool operator!=(const pair<T1, T2>& x, const pair<T1, T2>& y)
{
return !(x == y);
}
/**
* pair gt comparison
* @param[in] x The first object
* @param[in] y The second object
* @return true if x > y
*/
template<typename T1, typename T2> __attribute__ ((always_inline))
inline bool operator>(const pair<T1, T2>& x, const pair<T1, T2>& y)
{
return y < x;
}
/**
* pair le comparison
* @param[in] x The first object
* @param[in] y The second object
* @return true if x <= y
*/
template<typename T1, typename T2> __attribute__ ((always_inline))
inline bool operator<=(const pair<T1, T2>& x, const pair<T1, T2>& y)
{
return !(y < x);
}
/**
* pair >= comparison
* @param[in] x The first object
* @param[in] y The second object
* @return true if x >= y
*/
template<typename T1, typename T2> __attribute__ ((always_inline))
inline bool operator>=(const pair<T1, T2>& x, const pair<T1, T2>& y)
{
return !(x < y);
}
template<typename T>
constexpr typename std::remove_reference<T>::type&& move(T&& t)
{
return static_cast<typename std::remove_reference<T>::type&&>(t);
}
template<typename T>
constexpr T&& forward(typename std::remove_reference<T>::type& t)
{
return static_cast<T&&>(t);
}
template<typename T>
constexpr T&& forward(typename std::remove_reference<T>::type&& t)
{
static_assert(!std::is_lvalue_reference<T>::value,
"Incorrect substitution of lvalue reference.");
return static_cast<T&&>(t);
}
};
#endif
/* vim: set filetype=cpp : */
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