1*06c3fb27SDimitry Andric // -*- C++ -*- 2*06c3fb27SDimitry Andric //===----------------------------------------------------------------------===// 3*06c3fb27SDimitry Andric // 4*06c3fb27SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5*06c3fb27SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 6*06c3fb27SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7*06c3fb27SDimitry Andric // 8*06c3fb27SDimitry Andric // Kokkos v. 4.0 9*06c3fb27SDimitry Andric // Copyright (2022) National Technology & Engineering 10*06c3fb27SDimitry Andric // Solutions of Sandia, LLC (NTESS). 11*06c3fb27SDimitry Andric // 12*06c3fb27SDimitry Andric // Under the terms of Contract DE-NA0003525 with NTESS, 13*06c3fb27SDimitry Andric // the U.S. Government retains certain rights in this software. 14*06c3fb27SDimitry Andric // 15*06c3fb27SDimitry Andric //===---------------------------------------------------------------------===// 16*06c3fb27SDimitry Andric 17*06c3fb27SDimitry Andric #ifndef _LIBCPP___MDSPAN_LAYOUTS_H 18*06c3fb27SDimitry Andric #define _LIBCPP___MDSPAN_LAYOUTS_H 19*06c3fb27SDimitry Andric 20*06c3fb27SDimitry Andric #include <__config> 21*06c3fb27SDimitry Andric 22*06c3fb27SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 23*06c3fb27SDimitry Andric # pragma GCC system_header 24*06c3fb27SDimitry Andric #endif 25*06c3fb27SDimitry Andric 26*06c3fb27SDimitry Andric _LIBCPP_PUSH_MACROS 27*06c3fb27SDimitry Andric #include <__undef_macros> 28*06c3fb27SDimitry Andric 29*06c3fb27SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 30*06c3fb27SDimitry Andric 31*06c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 23 32*06c3fb27SDimitry Andric 33*06c3fb27SDimitry Andric // Layout policy with a mapping which corresponds to FORTRAN-style array layouts 34*06c3fb27SDimitry Andric struct layout_left { 35*06c3fb27SDimitry Andric template <class _Extents> 36*06c3fb27SDimitry Andric class mapping; 37*06c3fb27SDimitry Andric }; 38*06c3fb27SDimitry Andric 39*06c3fb27SDimitry Andric // Layout policy with a mapping which corresponds to C-style array layouts 40*06c3fb27SDimitry Andric struct layout_right { 41*06c3fb27SDimitry Andric template <class _Extents> 42*06c3fb27SDimitry Andric class mapping; 43*06c3fb27SDimitry Andric }; 44*06c3fb27SDimitry Andric 45*06c3fb27SDimitry Andric /* 46*06c3fb27SDimitry Andric // Will be implemented with follow on revision 47*06c3fb27SDimitry Andric // Layout policy with a unique mapping where strides are arbitrary 48*06c3fb27SDimitry Andric struct layout_stride { 49*06c3fb27SDimitry Andric template<class Extents> 50*06c3fb27SDimitry Andric class mapping; 51*06c3fb27SDimitry Andric }; 52*06c3fb27SDimitry Andric */ 53*06c3fb27SDimitry Andric 54*06c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 23 55*06c3fb27SDimitry Andric 56*06c3fb27SDimitry Andric _LIBCPP_END_NAMESPACE_STD 57*06c3fb27SDimitry Andric 58*06c3fb27SDimitry Andric _LIBCPP_POP_MACROS 59*06c3fb27SDimitry Andric 60*06c3fb27SDimitry Andric #endif // _LIBCPP___MDSPAN_LAYOUTS_H 61