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Several improvements in sparse module:

Browse Source 
* add a LDL^T factorization with solver using code from T. Davis's LDL
  library (LPGL2.1+)
* various bug fixes in trianfular solver, matrix product, etc.
* improve cmake files for the supported libraries
* split the sparse unit test
* etc.
This commit is contained in:
Gael Guennebaud
2008-11-05 13:47:55 +00:00
parent 9aba671cfc
commit 86ccd99d8d
16 changed files with 693 additions and 192 deletions
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8
Eigen/src/Sparse/TriangularSolver.h
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@@ -70,7 +70,9 @@ struct ei_solve_triangular_selector<Lhs,Rhs,Upper,RowMajor|IsSparse>
{
Scalar tmp = other.coeff(i,col);
typename Lhs::InnerIterator it(lhs, i);
for(++it; it; ++it)
if (it.index() == i)
++it;
for(; it; ++it)
{
tmp -= it.value() * other.coeff(it.index(),col);
}
@@ -107,7 +109,9 @@ struct ei_solve_triangular_selector<Lhs,Rhs,Lower,ColMajor|IsSparse>
other.coeffRef(i,col) /= it.value();
}
Scalar tmp = other.coeffRef(i,col);
for(++it; it; ++it)
if (it.index()==i)
++it;
for(; it; ++it)
other.coeffRef(it.index(), col) -= tmp * it.value();
}
}