/usr/include/uhd/utils/byteswap.ipp is in libuhd-dev 3.5.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright 2010-2011 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#ifndef INCLUDED_UHD_UTILS_BYTESWAP_IPP
#define INCLUDED_UHD_UTILS_BYTESWAP_IPP
/***********************************************************************
* Platform-specific implementation details for byteswap below:
**********************************************************************/
#if defined(BOOST_MSVC) //http://msdn.microsoft.com/en-us/library/a3140177%28VS.80%29.aspx
#include <cstdlib>
UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
return _byteswap_ushort(x);
}
UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
return _byteswap_ulong(x);
}
UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
return _byteswap_uint64(x);
}
#elif defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 3
UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
return (x>>8) | (x<<8); //DNE return __builtin_bswap16(x);
}
UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
return __builtin_bswap32(x);
}
UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
return __builtin_bswap64(x);
}
#elif defined(UHD_PLATFORM_MACOS)
#include <libkern/OSByteOrder.h>
UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
return OSSwapInt16(x);
}
UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
return OSSwapInt32(x);
}
UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
return OSSwapInt64(x);
}
#elif defined(UHD_PLATFORM_LINUX)
#include <byteswap.h>
UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
return bswap_16(x);
}
UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
return bswap_32(x);
}
UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
return bswap_64(x);
}
#else //http://www.koders.com/c/fidB93B34CD44F0ECF724F1A4EAE3854BA2FE692F59.aspx
UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
return (x>>8) | (x<<8);
}
UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
return (boost::uint32_t(uhd::byteswap(boost::uint16_t(x&0xfffful)))<<16) | (uhd::byteswap(boost::uint16_t(x>>16)));
}
UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
return (boost::uint64_t(uhd::byteswap(boost::uint32_t(x&0xffffffffull)))<<32) | (uhd::byteswap(boost::uint32_t(x>>32)));
}
#endif
/***********************************************************************
* Define the templated network to/from host conversions
**********************************************************************/
#include <boost/detail/endian.hpp>
template<typename T> UHD_INLINE T uhd::ntohx(T num){
#ifdef BOOST_BIG_ENDIAN
return num;
#else
return uhd::byteswap(num);
#endif
}
template<typename T> UHD_INLINE T uhd::htonx(T num){
#ifdef BOOST_BIG_ENDIAN
return num;
#else
return uhd::byteswap(num);
#endif
}
template<typename T> UHD_INLINE T uhd::wtohx(T num){
#ifdef BOOST_BIG_ENDIAN
return uhd::byteswap(num);
#else
return num;
#endif
}
template<typename T> UHD_INLINE T uhd::htowx(T num){
#ifdef BOOST_BIG_ENDIAN
return uhd::byteswap(num);
#else
return num;
#endif
}
#endif /* INCLUDED_UHD_UTILS_BYTESWAP_IPP */
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