585da50d7d
This PR adds the code of Boost.Math as of version 1.89 into the third-party directory, as discussed in a recent RFC [1]. The goal is for this code to be used as a back-end for the C++17 Math Special Functions. As explained in third-paty/README.md, this code is cleared for usage inside libc++ for the Math Special functions, however the LLVM Foundation should be consulted before using this code anywhere else in the LLVM project, due to the fact that it is under the Boost Software License (as opposed to the usual LLVM license). See the RFC [1] for more details. [1]: https://discourse.llvm.org/t/rfc-libc-taking-a-dependency-on-boost-math-for-the-c-17-math-special-functions
89 lines
1.9 KiB
C++
89 lines
1.9 KiB
C++
// (C) Copyright John Maddock 2010.
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// (C) Copyright Matt Borland 2024.
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// Use, modification and distribution are subject to the
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// Boost Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_MATH_TUPLE_HPP_INCLUDED
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#define BOOST_MATH_TUPLE_HPP_INCLUDED
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#include <boost/math/tools/config.hpp>
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#ifdef BOOST_MATH_ENABLE_CUDA
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#include <boost/math/tools/type_traits.hpp>
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#include <cuda/std/utility>
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#include <cuda/std/tuple>
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namespace boost {
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namespace math {
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using cuda::std::pair;
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using cuda::std::tuple;
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using cuda::std::make_pair;
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using cuda::std::tie;
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using cuda::std::get;
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using cuda::std::tuple_size;
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using cuda::std::tuple_element;
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namespace detail {
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template <typename T>
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BOOST_MATH_GPU_ENABLED T&& forward(boost::math::remove_reference_t<T>& arg) noexcept
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{
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return static_cast<T&&>(arg);
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}
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template <typename T>
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BOOST_MATH_GPU_ENABLED T&& forward(boost::math::remove_reference_t<T>&& arg) noexcept
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{
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static_assert(!boost::math::is_lvalue_reference<T>::value, "Cannot forward an rvalue as an lvalue.");
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return static_cast<T&&>(arg);
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}
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} // namespace detail
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template <typename T, typename... Ts>
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BOOST_MATH_GPU_ENABLED auto make_tuple(T&& t, Ts&&... ts)
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{
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return cuda::std::tuple<boost::math::decay_t<T>, boost::math::decay_t<Ts>...>(
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boost::math::detail::forward<T>(t), boost::math::detail::forward<Ts>(ts)...
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);
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}
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} // namespace math
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} // namespace boost
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#else
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#include <tuple>
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namespace boost {
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namespace math {
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using ::std::tuple;
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using ::std::pair;
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// [6.1.3.2] Tuple creation functions
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using ::std::ignore;
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using ::std::make_tuple;
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using ::std::tie;
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using ::std::get;
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// [6.1.3.3] Tuple helper classes
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using ::std::tuple_size;
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using ::std::tuple_element;
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// Pair helpers
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using ::std::make_pair;
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} // namespace math
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} // namespace boost
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#endif // BOOST_MATH_ENABLE_CUDA
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#endif
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