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Remove inclusion of unreferenced headers. Add comment about Microsoft/Visual Studio availability of intrinsics.

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Beman
2013-05-15 15:38:34 -04:00
parent 8b4bd2adfc
commit 88268249a9
1 changed files with 3 additions and 7 deletions
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10
include/boost/endian/detail/intrinsic.hpp
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@@ -7,19 +7,15 @@
#ifndef BOOST_ENDIAN_INTRINSIC_HPP
#define BOOST_ENDIAN_INTRINSIC_HPP
#ifndef BOOST_DETAIL_ENDIAN_HPP
# include <boost/detail/endian.hpp>
#endif
#ifndef BOOST_CSTDINT_HPP
# include <boost/cstdint.hpp>
#endif
#if ((defined __GNUC__ && !defined(__MINGW32__)) || defined __clang__)
#include <byteswap.h>
#define BOOST_ENDIAN_INTRINSIC_BYTE_SWAP_2 bswap_16
#define BOOST_ENDIAN_INTRINSIC_BYTE_SWAP_4 bswap_32
#define BOOST_ENDIAN_INTRINSIC_BYTE_SWAP_8 bswap_64
#elif defined _MSC_VER
// Microsoft documents these as being compatible since Windows 95 and specificly
// lists runtime library support since Visual Studio 2003 (aka 7.1).
#include <cstdlib>
#define BOOST_ENDIAN_INTRINSIC_BYTE_SWAP_2 _byteswap_ushort
#define BOOST_ENDIAN_INTRINSIC_BYTE_SWAP_4 _byteswap_ulong