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Merge pull request #4342 from lioncash/endian
common/swap: Make use of std::endian
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commit
263200f982
1 changed files with 4 additions and 42 deletions
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@ -17,43 +17,14 @@
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#pragma once
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#include <type_traits>
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#if defined(_MSC_VER)
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#include <cstdlib>
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#endif
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#include <bit>
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#include <cstring>
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#include <type_traits>
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#include "common/common_types.h"
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// GCC
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#ifdef __GNUC__
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#if __BYTE_ORDER__ && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) && !defined(COMMON_LITTLE_ENDIAN)
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#define COMMON_LITTLE_ENDIAN 1
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#elif __BYTE_ORDER__ && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) && !defined(COMMON_BIG_ENDIAN)
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#define COMMON_BIG_ENDIAN 1
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#endif
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// LLVM/clang
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#elif defined(__clang__)
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#if __LITTLE_ENDIAN__ && !defined(COMMON_LITTLE_ENDIAN)
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#define COMMON_LITTLE_ENDIAN 1
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#elif __BIG_ENDIAN__ && !defined(COMMON_BIG_ENDIAN)
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#define COMMON_BIG_ENDIAN 1
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#endif
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// MSVC
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#elif defined(_MSC_VER) && !defined(COMMON_BIG_ENDIAN) && !defined(COMMON_LITTLE_ENDIAN)
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#define COMMON_LITTLE_ENDIAN 1
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#endif
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// Worst case, default to little endian.
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#if !COMMON_BIG_ENDIAN && !COMMON_LITTLE_ENDIAN
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#define COMMON_LITTLE_ENDIAN 1
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#endif
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namespace Common {
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#ifdef _MSC_VER
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@ -675,17 +646,8 @@ struct AddEndian<T, SwapTag> {
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};
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// Alias LETag/BETag as KeepTag/SwapTag depending on the system
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#if COMMON_LITTLE_ENDIAN
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using LETag = KeepTag;
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using BETag = SwapTag;
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#else
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using BETag = KeepTag;
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using LETag = SwapTag;
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#endif
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using LETag = std::conditional_t<std::endian::native == std::endian::little, KeepTag, SwapTag>;
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using BETag = std::conditional_t<std::endian::native == std::endian::big, KeepTag, SwapTag>;
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// Aliases for LE types
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using u16_le = AddEndian<u16, LETag>::type;
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