forked from boostorg/predef
130 lines
4.0 KiB
C
130 lines
4.0 KiB
C
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/*
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Copyright Redshift Software, Inc. 2013
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef BOOST_PREDEF_ENDIAN_H
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#define BOOST_PREDEF_ENDIAN_H
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#include <boost/predef/version_number.h>
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#include <boost/predef/make.h>
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#include <boost/predef/library/c.h>
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/*`
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[heading `BOOST_ENDIAN_BIG_BYTE`, `BOOST_ENDIAN_LITTLE_BYTE`, `BOOST_ENDIAN_BIG_WORD`, `BOOST_ENDIAN_LITTLE_WORD`]
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Detection of endian memory ordering.
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*/
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#define BOOST_ENDIAN_BIG_BYTE BOOST_VERSION_NUMBER_NOT_AVAILABLE
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#define BOOST_ENDIAN_BIG_WORD BOOST_VERSION_NUMBER_NOT_AVAILABLE
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#define BOOST_ENDIAN_LITTLE_BYTE BOOST_VERSION_NUMBER_NOT_AVAILABLE
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#define BOOST_ENDIAN_LITTLE_WORD BOOST_VERSION_NUMBER_NOT_AVAILABLE
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/* GNU libc provides a header defining __BYT_ORDER. */
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#if BOOST_LIB_C_GNU
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# include <endian.h>
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#endif
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/* GNU libc style __BYTE_ORDER macros. */
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#if defined(__BYTE_ORDER)
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# if (__BYTE_ORDER == __BIG_ENDIAN)
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# undef BOOST_ENDIAN_BIG_BYTE
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# define BOOST_ENDIAN_BIG_BYTE BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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# if (__BYTE_ORDER == __LITTLE_ENDIAN)
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# undef BOOST_ENDIAN_LITTLE_BYTE
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# define BOOST_ENDIAN_LITTLE_BYTE BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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# if (__BYTE_ORDER == __PDP_ENDIAN)
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# undef BOOST_ENDIAN_LITTLE_WORD
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# define BOOST_ENDIAN_LITTLE_WORD BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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#endif
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/* Built-in byte-swpped big-endian macros. */
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#if !BOOST_ENDIAN_BIG_BYTE
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# if defined(__BIG_ENDIAN__) || \
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defined(__ARMEB__) || \
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defined(__THUMBEB__) || \
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defined(__AARCH64EB__) || \
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defined(_MIPSEB) || \
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defined(__MIPSEB) || \
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defined(__MIPSEB__)
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# undef BOOST_ENDIAN_BIG_BYTE
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# define BOOST_ENDIAN_BIG_BYTE BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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#endif
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/* Built-in byte-swapped little-endian macros. */
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#if !BOOST_ENDIAN_LITTLE_BYTE
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# if defined(__LITTLE_ENDIAN__) || \
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defined(__ARMEL__) || \
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defined(__THUMBEL__) || \
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defined(__AARCH64EL__) || \
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defined(_MIPSEL) || \
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defined(__MIPSEL) || \
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defined(__MIPSEL__)
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# undef BOOST_ENDIAN_LITTLE_BYTE
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# define BOOST_ENDIAN_LITTLE_BYTE BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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#endif
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/* Some architectures are strictly one endianess (as opposed
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* the current common bi-endianess).
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*/
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#if !BOOST_ENDIAN_BIG_BYTE && \
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!BOOST_ENDIAN_BIG_WORD && \
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!BOOST_ENDIAN_LITTLE_BYTE && \
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!BOOST_ENDIAN_LITTLE_WORD
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# include <boost/predef/architecture.h>
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# if BOOST_ARCH_M68K || \
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BOOST_ARCH_PARISK || \
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BOOST_ARCH_SYS370 || \
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BOOST_ARCH_SYS390 || \
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BOOST_ARCH_Z
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# undef BOOST_ENDIAN_BIG_BYTE
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# define BOOST_ENDIAN_BIG_BYTE BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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# if BOOST_ARCH_AMD64 || \
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BOOST_ARCH_IA64 || \
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BOOST_ARCH_X86
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# undef BOOST_ENDIAN_LITTLE_BYTE
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# define BOOST_ENDIAN_LITTLE_BYTE BOOST_VERSION_NUMBER_AVAILABLE
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# endif
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#endif
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#if BOOST_ENDIAN_BIG_BYTE
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# define BOOST_ENDIAN_BIG_BYTE_AVAILABLE
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#endif
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#if BOOST_ENDIAN_BIG_WORD_BYTE
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# define BOOST_ENDIAN_BIG_WORD_BYTE_AVAILABLE
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#endif
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#if BOOST_ENDIAN_LITTLE_BYTE
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# define BOOST_ENDIAN_LITTLE_BYTE_AVAILABLE
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#endif
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#if BOOST_ENDIAN_LITTLE_WORD_BYTE
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# define BOOST_ENDIAN_LITTLE_WORD_BYTE_AVAILABLE
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#endif
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#define BOOST_ENDIAN_BIG_BYTE_NAME "Byte-Swapped Big-Endian"
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#define BOOST_ENDIAN_BIG_WORD_NAME "Word-Swapped Big-Endian"
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#define BOOST_ENDIAN_LITTLE_BYTE_NAME "Byte-Swapped Little-Endian"
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#define BOOST_ENDIAN_LITTLE_WORD_NAME "Word-Swapped Little-Endian"
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#include <boost/predef/detail/test.h>
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BOOST_PREDEF_DECLARE_TEST(BOOST_ENDIAN_BIG_BYTE,BOOST_ENDIAN_BIG_BYTE_NAME)
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#include <boost/predef/detail/test.h>
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BOOST_PREDEF_DECLARE_TEST(BOOST_ENDIAN_BIG_WORD,BOOST_ENDIAN_BIG_WORD_NAME)
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#include <boost/predef/detail/test.h>
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BOOST_PREDEF_DECLARE_TEST(BOOST_ENDIAN_LITTLE_BYTE,BOOST_ENDIAN_LITTLE_BYTE_NAME)
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#include <boost/predef/detail/test.h>
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BOOST_PREDEF_DECLARE_TEST(BOOST_ENDIAN_LITTLE_WORD,BOOST_ENDIAN_LITTLE_WORD_NAME)
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#endif
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