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https://gitee.com/openharmony/arkcompiler_runtime_core
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757889d5e3
Issue: https://gitee.com/openharmony/arkcompiler_runtime_core/issues/I687G9?from=project-issue Test: tdd Signed-off-by: shawn_hu_ls <huxiaowei3@huawei.com>
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/**
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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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 LIBPANDABASE_UTILS_BIT_HELPERS_H
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#define LIBPANDABASE_UTILS_BIT_HELPERS_H
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#include "macros.h"
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#include <cstddef>
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#include <cstdint>
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#include <limits>
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#include <type_traits>
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namespace panda::helpers {
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template <size_t width>
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struct UnsignedTypeHelper {
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using type = std::conditional_t<
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width <= std::numeric_limits<uint8_t>::digits, uint8_t,
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std::conditional_t<
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width <= std::numeric_limits<uint16_t>::digits, uint16_t,
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std::conditional_t<width <= std::numeric_limits<uint32_t>::digits, uint32_t,
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std::conditional_t<width <= std::numeric_limits<uint64_t>::digits, uint64_t, void>>>>;
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};
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template <size_t width>
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using UnsignedTypeHelperT = typename UnsignedTypeHelper<width>::type;
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template <size_t width, bool is_signed>
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struct TypeHelper {
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using type =
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std::conditional_t<is_signed, std::make_signed_t<UnsignedTypeHelperT<width>>, UnsignedTypeHelperT<width>>;
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};
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template <size_t width, bool is_signed>
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using TypeHelperT = typename TypeHelper<width, is_signed>::type;
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} // namespace panda::helpers
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#endif // LIBPANDABASE_UTILS_BIT_HELPERS_H
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