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* extend Map to allow the user to specify whether the mapped data

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is aligned or not. This is done using the Aligned constant:
  Map<MatrixType,Aligned>::Map(data);
* rename ForceAligned to EnforceAlignedAccess, and update its doc,
  and emphasize this is mainly an internal stuff.
This commit is contained in:
Gael Guennebaud
2009-10-23 14:26:14 +02:00
parent 83a7b7c44c
commit a382963b04
6 changed files with 63 additions and 43 deletions
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18
Eigen/src/Core/Block.h
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@@ -33,10 +33,10 @@
* \param MatrixType the type of the object in which we are taking a block
* \param BlockRows the number of rows of the block we are taking at compile time (optional)
* \param BlockCols the number of columns of the block we are taking at compile time (optional)
* \param _PacketAccess allows to enforce aligned loads and stores if set to \b ForceAligned.
* The default is \b AsRequested. This parameter is internaly used by Eigen
* in expressions such as \code mat.block() += other; \endcode and most of
* the time this is the only way it is used.
* \param _PacketAccess \internal used to enforce aligned loads in expressions such as
* \code mat.block() += other; \endcode. Possible values are
* \c AsRequested (default) and \c EnforceAlignedAccess.
* See class MapBase for more details.
* \param _DirectAccessStatus \internal used for partial specialization
*
* This class represents an expression of either a fixed-size or dynamic-size block. It is the return
@@ -84,9 +84,9 @@ struct ei_traits<Block<MatrixType, BlockRows, BlockCols, _PacketAccess, _DirectA
CoeffReadCost = ei_traits<MatrixType>::CoeffReadCost,
PacketAccess = _PacketAccess
};
typedef typename ei_meta_if<int(PacketAccess)==ForceAligned,
typedef typename ei_meta_if<int(PacketAccess)==EnforceAlignedAccess,
Block<MatrixType, BlockRows, BlockCols, _PacketAccess, _DirectAccessStatus>&,
Block<MatrixType, BlockRows, BlockCols, ForceAligned, _DirectAccessStatus> >::ret AlignedDerivedType;
Block<MatrixType, BlockRows, BlockCols, EnforceAlignedAccess, _DirectAccessStatus> >::ret AlignedDerivedType;
};
template<typename MatrixType, int BlockRows, int BlockCols, int PacketAccess, int _DirectAccessStatus> class Block
@@ -228,13 +228,13 @@ class Block<MatrixType,BlockRows,BlockCols,PacketAccess,HasDirectAccess>
class InnerIterator;
typedef typename ei_traits<Block>::AlignedDerivedType AlignedDerivedType;
friend class Block<MatrixType,BlockRows,BlockCols,PacketAccess==AsRequested?ForceAligned:AsRequested,HasDirectAccess>;
friend class Block<MatrixType,BlockRows,BlockCols,PacketAccess==EnforceAlignedAccess?AsRequested:EnforceAlignedAccess,HasDirectAccess>;
EIGEN_INHERIT_ASSIGNMENT_OPERATORS(Block)
AlignedDerivedType _convertToForceAligned()
AlignedDerivedType _convertToEnforceAlignedAccess()
{
return Block<MatrixType,BlockRows,BlockCols,ForceAligned,HasDirectAccess>
return Block<MatrixType,BlockRows,BlockCols,EnforceAlignedAccess,HasDirectAccess>
(m_matrix, Base::m_data, Base::m_rows.value(), Base::m_cols.value());
}