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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/LU/LU.h
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@@ -437,7 +437,7 @@ LU<MatrixType>& LU<MatrixType>::compute(const MatrixType& matrix)
if(k<rows-1)
m_lu.col(k).end(rows-k-1) /= m_lu.coeff(k,k);
if(k<size-1)
m_lu.block(k+1,k+1,rows-k-1,cols-k-1) -= m_lu.col(k).end(rows-k-1) * m_lu.row(k).end(cols-k-1);
m_lu.block(k+1,k+1,rows-k-1,cols-k-1).noalias() -= m_lu.col(k).end(rows-k-1) * m_lu.row(k).end(cols-k-1);
}
for(int k = 0; k < matrix.rows(); ++k) m_p.coeffRef(k) = k;

2
Eigen/src/LU/PartialLU.h
View File

@@ -248,7 +248,7 @@ struct ei_partial_lu_impl
int rrows = rows-k-1;
int rsize = size-k-1;
lu.col(k).end(rrows) /= lu.coeff(k,k);
lu.corner(BottomRight,rrows,rsize) -= (lu.col(k).end(rrows) * lu.row(k).end(rsize)).lazy();
lu.corner(BottomRight,rrows,rsize).noalias() -= lu.col(k).end(rrows) * lu.row(k).end(rsize);
}
}
}