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* remove EnforceAlignedAccess option to Block, VectorBlock, Map and MapBase

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because thanks to the previous commit this is not needed anymore
* add a more general ForceAlignedAccess expression which can be used for any expression.
  It is already used by StableNorm.h.
This commit is contained in:
Gael Guennebaud
2009-11-20 16:30:14 +01:00
parent eb8f450071
commit 4af1753b6f
10 changed files with 182 additions and 96 deletions
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18
Eigen/src/Core/Map.h
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@@ -31,8 +31,8 @@
* \brief A matrix or vector expression mapping an existing array of data.
*
* \param MatrixType the equivalent matrix type of the mapped data
* \param PointerAlignment specifies whether the pointer is \c Aligned, or \c Unaligned.
* The default is \c Unaligned.
* \param Options specifies whether the pointer is \c Aligned, or \c Unaligned.
* The default is \c Unaligned.
*
* This class represents a matrix or vector expression mapping an existing array of data.
* It can be used to let Eigen interface without any overhead with non-Eigen data structures,
@@ -46,23 +46,15 @@
*
* This class is the return type of Matrix::Map() but can also be used directly.
*
* \b Note \b to \b Eigen \b developers: The template parameter \c PointerAlignment
* can also be or-ed with \c EnforceAlignedAccess in order to enforce aligned read
* in expressions such as \code A += B; \endcode. See class MapBase for further details.
*
* \sa Matrix::Map()
*/
template<typename MatrixType, int Options>
struct ei_traits<Map<MatrixType, Options> > : public ei_traits<MatrixType>
{
enum {
PacketAccess = Options & EnforceAlignedAccess,
Flags = (Options&Aligned)==Aligned ? ei_traits<MatrixType>::Flags | AlignedBit
: ei_traits<MatrixType>::Flags & ~AlignedBit
};
typedef typename ei_meta_if<int(PacketAccess)==EnforceAlignedAccess,
Map<MatrixType, Options>&,
Map<MatrixType, Options|EnforceAlignedAccess> >::ret AlignedDerivedType;
};
template<typename MatrixType, int Options> class Map
@@ -71,15 +63,9 @@ template<typename MatrixType, int Options> class Map
public:
_EIGEN_GENERIC_PUBLIC_INTERFACE(Map, MapBase<Map>)
typedef typename ei_traits<Map>::AlignedDerivedType AlignedDerivedType;
inline int stride() const { return this->innerSize(); }
AlignedDerivedType _convertToEnforceAlignedAccess()
{
return AlignedDerivedType(Base::m_data, Base::m_rows.value(), Base::m_cols.value());
}
inline Map(const Scalar* data) : Base(data) {}
inline Map(const Scalar* data, int size) : Base(data, size) {}