mirror of https://github.com/ARMmbed/mbed-os.git
70 lines
1.9 KiB
Plaintext
70 lines
1.9 KiB
Plaintext
/* mbed Microcontroller Library
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* Copyright (c) 2019 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MSTD_CSTDDEF_
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#define MSTD_CSTDDEF_
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/* <mstd_cstddef>
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*
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* - provides <cstddef>
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* - For ARM C 5, standard C++11/14 features:
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* - - adds macro replacements for alignof and alignas keywords
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* - - adds missing std::nullptr_t
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* - For all toolchains:
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* - - MSTD_CONSTEXPR_XX_14 macros that can be used to mark
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* things that are valid as constexpr only for C++14 or later,
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* permitting constexpr use where ARM C 5 would reject it.
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* - - MSTD_CONSTEXPR_XX_11 macros that can be used to permit
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* constexpr alternatives for C.
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*/
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#if __cplusplus
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#include <cstddef>
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/* Macros that can be used to mark functions and objects that are
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* constexpr in C++14 or later, but not in earlier versions.
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*/
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#if __cplusplus >= 201402
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#define MSTD_CONSTEXPR_FN_14 constexpr
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#define MSTD_CONSTEXPR_OBJ_14 constexpr
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#else
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#define MSTD_CONSTEXPR_FN_14 inline
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#define MSTD_CONSTEXPR_OBJ_14 const
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#endif
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#define MSTD_CONSTEXPR_FN_11 constexpr
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#define MSTD_CONSTEXPR_OBJ_11 constexpr
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namespace mstd {
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using std::size_t;
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using std::ptrdiff_t;
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using std::nullptr_t;
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using std::max_align_t;
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}
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#else // __cplusplus
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#define MSTD_CONSTEXPR_FN_14 inline
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#define MSTD_CONSTEXPR_OBJ_14 const
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#define MSTD_CONSTEXPR_FN_11 inline
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#define MSTD_CONSTEXPR_OBJ_11 const
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#endif // __cplusplus
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#endif // MSTD_CSTDDEF_
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