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// (C) Copyright John Maddock 2010.
// (C) Copyright Matt Borland 2024.
// Use, modification and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_MATH_TUPLE_HPP_INCLUDED
#define BOOST_MATH_TUPLE_HPP_INCLUDED
#include <boost/math/tools/config.hpp>
#ifdef BOOST_MATH_ENABLE_CUDA
#include <boost/math/tools/type_traits.hpp>
#include <cuda/std/utility>
#include <cuda/std/tuple>
namespace boost {
namespace math {
using cuda::std::pair;
using cuda::std::tuple;
using cuda::std::make_pair;
using cuda::std::tie;
using cuda::std::get;
using cuda::std::tuple_size;
using cuda::std::tuple_element;
namespace detail {
template <typename T>
BOOST_MATH_GPU_ENABLED T&& forward(boost::math::remove_reference_t<T>& arg) noexcept
{
return static_cast<T&&>(arg);
}
template <typename T>
BOOST_MATH_GPU_ENABLED T&& forward(boost::math::remove_reference_t<T>&& arg) noexcept
{
static_assert(!boost::math::is_lvalue_reference<T>::value, "Cannot forward an rvalue as an lvalue.");
return static_cast<T&&>(arg);
}
} // namespace detail
template <typename T, typename... Ts>
BOOST_MATH_GPU_ENABLED auto make_tuple(T&& t, Ts&&... ts)
{
return cuda::std::tuple<boost::math::decay_t<T>, boost::math::decay_t<Ts>...>(
boost::math::detail::forward<T>(t), boost::math::detail::forward<Ts>(ts)...
);
}
} // namespace math
} // namespace boost
#else
#include <tuple>
namespace boost {
namespace math {
using ::std::tuple;
using ::std::pair;
// [6.1.3.2] Tuple creation functions
using ::std::ignore;
using ::std::make_tuple;
using ::std::tie;
using ::std::get;
// [6.1.3.3] Tuple helper classes
using ::std::tuple_size;
using ::std::tuple_element;
// Pair helpers
using ::std::make_pair;
} // namespace math
} // namespace boost
#endif // BOOST_MATH_ENABLE_CUDA
#endif
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