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/*========================== begin_copyright_notice ============================
Copyright (C) 2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#ifndef OPENCL_UTILITY
#define OPENCL_UTILITY
#include <opencl_type_traits.h>
namespace cl {
template <typename T> constexpr T &&forward(remove_reference_t<T> &arg) {
return static_cast<T &&>(arg);
}
template <typename T> constexpr T &&forward(remove_reference_t<T> &&arg) {
return static_cast<T &&>(arg);
}
template <typename FirstT, typename SecondT> struct pair {
using first_type = FirstT;
using second_type = SecondT;
first_type first;
second_type second;
constexpr pair() {}
constexpr pair(const first_type &first_in, const second_type &second_in)
: first{first_in}, second{second_in} {}
template <typename FirstTIn, typename SecondTIn>
constexpr pair(FirstTIn &&first_in, SecondTIn &&second_in)
: first(forward<FirstTIn>(first_in)),
second(forward<SecondTIn>(second_in)) {}
constexpr pair(const pair &) = default;
constexpr pair(pair &&) = default;
template <typename FirstTIn, typename SecondTIn>
constexpr pair(const pair<FirstTIn, SecondTIn> &in)
: first(in.first), second(in.second) {}
template <typename FirstTIn, typename SecondTIn>
constexpr pair(pair<FirstTIn, SecondTIn> &&in)
: first(forward<FirstTIn>(in.first)),
second(forward<SecondTIn>(in.second)) {}
constexpr pair &operator=(const pair &) = default;
constexpr pair &operator=(pair &&) = default;
template <typename FirstTIn, typename SecondTIn>
constexpr pair &operator=(const pair<FirstTIn, SecondTIn> &in) {
first = in.first;
second = in.second;
return *this;
}
template <typename FirstTIn, typename SecondTIn>
constexpr pair &operator=(pair<FirstTIn, SecondTIn> &&in) {
first = forward<FirstTIn>(in.first);
second = forward<SecondTIn>(in.second);
return *this;
}
friend bool operator==(const pair &lhs, const pair &rhs) {
return lhs.first == rhs.first && lhs.second == rhs.second;
}
};
template <bool B, class T = void> struct enable_if {};
template <class T> struct enable_if<true, T> { using type = T; };
template <bool B, class T = void>
using enable_if_t = typename enable_if<B, T>::type;
} // namespace cl
#endif // OPENCL_UTILITY
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