feedc0de/boost_endian
1
0 Fork 0
forked from boostorg/endian
Code Pull Requests Activity

Support any truncating store in endian_store

Browse Source
This commit is contained in:
Peter Dimov committed 2019-04-30 20:39:17 +03:00
1 parent b0cc5e64d3
commit 8df14956d4
2 files changed
+424 -305
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

include/boost/endian/detail/endian_store.hpp
+210
View File
@@ -74,6 +74,92 @@ template<class T, std::size_t N, BOOST_SCOPED_ENUM(order) O1, BOOST_SCOPED_ENUM(
}
};
// truncating store 2 -> 1
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 2, Order, 1, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 2 ];
boost::endian::endian_store<T, 2, order::little>( tmp, v );
p[0] = tmp[0];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 2, Order, 1, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 2 ];
boost::endian::endian_store<T, 2, order::big>( tmp, v );
p[0] = tmp[1];
}
};
// truncating store 4 -> 1
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 4, Order, 1, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 4 ];
boost::endian::endian_store<T, 4, order::little>( tmp, v );
p[0] = tmp[0];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 4, Order, 1, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 4 ];
boost::endian::endian_store<T, 4, order::big>( tmp, v );
p[0] = tmp[3];
}
};
// truncating store 4 -> 2
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 4, Order, 2, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 4 ];
boost::endian::endian_store<T, 4, order::little>( tmp, v );
p[0] = tmp[0];
p[1] = tmp[1];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 4, Order, 2, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 4 ];
boost::endian::endian_store<T, 4, order::big>( tmp, v );
p[0] = tmp[2];
p[1] = tmp[3];
}
};
// truncating store 4 -> 3
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 4, Order, 3, order::little>
@@ -106,6 +192,130 @@ template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 4,
}
};
// truncating store 8 -> 1
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 1, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::little>( tmp, v );
p[0] = tmp[0];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 1, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::big>( tmp, v );
p[0] = tmp[7];
}
};
// truncating store 8 -> 2
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 2, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::little>( tmp, v );
p[0] = tmp[0];
p[1] = tmp[1];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 2, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::big>( tmp, v );
p[0] = tmp[6];
p[1] = tmp[7];
}
};
// truncating store 8 -> 3
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 3, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::little>( tmp, v );
p[0] = tmp[0];
p[1] = tmp[1];
p[2] = tmp[2];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 3, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::big>( tmp, v );
p[0] = tmp[5];
p[1] = tmp[6];
p[2] = tmp[7];
}
};
// truncating store 8 -> 4
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 4, order::little>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::little>( tmp, v );
p[0] = tmp[0];
p[1] = tmp[1];
p[2] = tmp[2];
p[3] = tmp[3];
}
};
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 4, order::big>
{
inline void operator()( unsigned char * p, T const & v ) const BOOST_NOEXCEPT
{
BOOST_STATIC_ASSERT( is_integral<T>::value || is_enum<T>::value );
unsigned char tmp[ 8 ];
boost::endian::endian_store<T, 8, order::big>( tmp, v );
p[0] = tmp[4];
p[1] = tmp[5];
p[2] = tmp[6];
p[3] = tmp[7];
}
};
// truncating store 8 -> 5
template<class T, BOOST_SCOPED_ENUM(order) Order> struct endian_store_impl<T, 8, Order, 5, order::little>