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bugfix in compute_matrix_flags, optimization in LU,

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improve doc, and workaround aliasing detection in MatrixBase_eval snippet
(not very nice but I don't know how to do it in a better way)
This commit is contained in:
Gael Guennebaud
2009-08-16 10:55:10 +02:00
parent ee982709d3
commit fc9480cbb3
8 changed files with 77 additions and 145 deletions
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2
Eigen/src/Core/util/XprHelper.h
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@@ -90,7 +90,7 @@ class ei_compute_matrix_flags
: MaxRows==1 ? MaxCols
: row_major_bit ? MaxCols : MaxRows,
is_big = inner_max_size == Dynamic,
is_packet_size_multiple = Rows==Dynamic || Cols==Dynamic || ((Cols*Rows) % ei_packet_traits<Scalar>::size) == 0,
is_packet_size_multiple = MaxRows==Dynamic || MaxCols==Dynamic || ((MaxCols*MaxRows) % ei_packet_traits<Scalar>::size) == 0,
aligned_bit = (((Options&DontAlign)==0) && (is_big || is_packet_size_multiple)) ? AlignedBit : 0,
packet_access_bit = ei_packet_traits<Scalar>::size > 1 && aligned_bit ? PacketAccessBit : 0
};