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Updated endianness for C++20

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This commit is contained in:
John Wellbelove 2022-01-03 18:22:08 +00:00
parent b8579f0151
commit 9665ab21c1
1 changed files with 28 additions and 0 deletions
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28
include/etl/endianness.h
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@ -37,6 +37,10 @@ SOFTWARE.
#include "enum_type.h"
#include "binary.h"
#if ETL_CPP20_SUPPORTED && ETL_USING_STL
#include <bit>
#endif
///\defgroup endian endian
/// Constants & utilities for endianess
///\ingroup utilities
@ -49,12 +53,36 @@ namespace etl
//***************************************************************************
struct endian
{
#if ETL_CPP20_SUPPORTED && ETL_USING_STL
enum enum_type
{
little = static_cast<int>(std::endian::little),
big = static_cast<int>(std::endian::big),
native = static_cast<int>(std::endian::native)
};
#elif defined(__BYTE_ORDER__)
#if defined(__ORDER_LITTLE_ENDIAN__)
#defined ETL_LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
#defined ETL_BIG_ENDIAN __ORDER_BIG_ENDIAN__
#elif defined(__LITTLE_ENDIAN__)
#defined ETL_LITTLE_ENDIAN __LITTLE_ENDIAN__
#defined ETL_BIG_ENDIAN __BIG_ENDIAN__
#endif
enum enum_type
{
little = ETL_LITTLE_ENDIAN,
big = ETL_BIG_ENDIAN,
native = __BYTE_ORDER__
};
#else
enum enum_type
{
little,
big,
native
};
#endif
ETL_DECLARE_ENUM_TYPE(endian, int)
ETL_ENUM_TYPE(little, "little")