1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10export namespace std { 11#if _LIBCPP_STD_VER >= 23 12 // [mdspan.extents], class template extents 13 using std::extents; 14 15 // [mdspan.extents.dextents], alias template dextents 16 using std::dextents; 17 18# if _LIBCPP_STD_VER >= 26 19 // [mdspan.extents.dims] 20 using std::dims; 21# endif // _LIBCPP_STD_VER >= 26 22 23 // [mdspan.layout], layout mapping 24 using std::layout_left; 25 using std::layout_right; 26 using std::layout_stride; 27 28 // [mdspan.accessor.default], class template default_accessor 29 using std::default_accessor; 30 31 // [mdspan.mdspan], class template mdspan 32 using std::mdspan; 33#endif // _LIBCPP_STD_VER >= 23 34} // namespace std 35