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89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
///\file
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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Copyright(c) 2014 jwellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#ifndef __ETL_ENDIAN__
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#define __ETL_ENDIAN__
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#include <stdint.h>
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#include "enum_type.h"
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///\defgroup endian endian
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/// Constants & utilities for endianess
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///\ingroup utilities
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namespace etl
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{
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//***************************************************************************
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/// Constants to denote endianness of operations.
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///\ingroup endian
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//***************************************************************************
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struct endian
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{
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enum enum_type
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{
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little,
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big
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};
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DECLARE_ENUM_TYPE(endian, int)
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ENUM_TYPE(little, "little")
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ENUM_TYPE(big, "big")
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END_ENUM_TYPE
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};
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//***************************************************************************
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/// Checks the endianness of the platform.
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///\ingroup endian
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//***************************************************************************
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struct endianness
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{
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endianness()
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: ETL_ENDIAN_TEST(0x0011)
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{
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}
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endian operator ()() const
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{
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return endian(*this);
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}
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operator endian() const
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{
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return (*reinterpret_cast<const uint8_t*>(&ETL_ENDIAN_TEST) == 0x11) ? endian::little : endian::big;
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}
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private:
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const uint16_t ETL_ENDIAN_TEST;
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};
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}
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#endif
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