root / host / include / uhd / utils / byteswap.ipp @ 4caf9db3
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// |
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// Copyright 2010-2011 Ettus Research LLC |
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// |
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// This program is free software: you can redistribute it and/or modify |
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// it under the terms of the GNU General Public License as published by |
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// the Free Software Foundation, either version 3 of the License, or |
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// (at your option) any later version. |
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// |
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// This program is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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// |
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// You should have received a copy of the GNU General Public License |
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// along with this program. If not, see <http://www.gnu.org/licenses/>. |
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// |
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#ifndef INCLUDED_UHD_UTILS_BYTESWAP_IPP |
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#define INCLUDED_UHD_UTILS_BYTESWAP_IPP |
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/*********************************************************************** |
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* Platform-specific implementation details for byteswap below: |
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**********************************************************************/ |
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#if defined(BOOST_MSVC) //http://msdn.microsoft.com/en-us/library/a3140177%28VS.80%29.aspx |
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#include <cstdlib> |
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|
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UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
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return _byteswap_ushort(x); |
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} |
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UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
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return _byteswap_ulong(x); |
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} |
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UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
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return _byteswap_uint64(x); |
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} |
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#elif defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 2 |
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|
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UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
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return (x>>8) | (x<<8); //DNE return __builtin_bswap16(x); |
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} |
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UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
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return __builtin_bswap32(x); |
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} |
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|
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UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
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return __builtin_bswap64(x); |
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} |
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#elif defined(UHD_PLATFORM_MACOS) |
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#include <libkern/OSByteOrder.h> |
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|
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UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
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return OSSwapInt16(x); |
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} |
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|
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UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
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return OSSwapInt32(x); |
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} |
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UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
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return OSSwapInt64(x); |
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} |
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|
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#elif defined(UHD_PLATFORM_LINUX) |
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#include <byteswap.h> |
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|
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UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
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return bswap_16(x); |
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} |
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|
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UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
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return bswap_32(x); |
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} |
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|
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UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
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return bswap_64(x); |
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} |
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#else //http://www.koders.com/c/fidB93B34CD44F0ECF724F1A4EAE3854BA2FE692F59.aspx |
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|
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UHD_INLINE boost::uint16_t uhd::byteswap(boost::uint16_t x){
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return (x>>8) | (x<<8); |
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} |
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UHD_INLINE boost::uint32_t uhd::byteswap(boost::uint32_t x){
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return (boost::uint32_t(uhd::byteswap(boost::uint16_t(x&0xfffful)))<<16) | (uhd::byteswap(boost::uint16_t(x>>16))); |
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} |
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UHD_INLINE boost::uint64_t uhd::byteswap(boost::uint64_t x){
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return (boost::uint64_t(uhd::byteswap(boost::uint32_t(x&0xffffffffull)))<<32) | (uhd::byteswap(boost::uint32_t(x>>32))); |
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} |
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#endif |
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/*********************************************************************** |
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* Define the templated network to/from host conversions |
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**********************************************************************/ |
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#include <boost/detail/endian.hpp> |
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|
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template<typename T> UHD_INLINE T uhd::ntohx(T num){
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#ifdef BOOST_BIG_ENDIAN |
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return num; |
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#else |
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return uhd::byteswap(num); |
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#endif |
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} |
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template<typename T> UHD_INLINE T uhd::htonx(T num){
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#ifdef BOOST_BIG_ENDIAN |
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return num; |
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#else |
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return uhd::byteswap(num); |
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#endif |
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} |
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template<typename T> UHD_INLINE T uhd::wtohx(T num){
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#ifdef BOOST_BIG_ENDIAN |
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return uhd::byteswap(num); |
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#else |
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return num; |
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#endif |
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} |
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template<typename T> UHD_INLINE T uhd::htowx(T num){
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#ifdef BOOST_BIG_ENDIAN |
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return uhd::byteswap(num); |
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#else |
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return num; |
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#endif |
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} |
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#endif /* INCLUDED_UHD_UTILS_BYTESWAP_IPP */ |