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bugfix when the diagonal is not stored and assumed to be 1

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This commit is contained in:
Gael Guennebaud 2009-04-10 18:13:37 +00:00
parent 22edf77470
commit 7254201632
1 changed files with 3 additions and 3 deletions
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6
Eigen/src/Sparse/TriangularSolver.h
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@ -79,7 +79,7 @@ struct ei_sparse_solve_triangular_selector<Lhs,Rhs,Mode,UpperTriangular,RowMajor
{ {
Scalar tmp = other.coeff(i,col); Scalar tmp = other.coeff(i,col);
typename Lhs::InnerIterator it(lhs, i); typename Lhs::InnerIterator it(lhs, i);
if (it.index() == i) if (it && it.index() == i)
++it; ++it;
for(; it; ++it) for(; it; ++it)
{ {
@ -91,7 +91,7 @@ struct ei_sparse_solve_triangular_selector<Lhs,Rhs,Mode,UpperTriangular,RowMajor
else else
{ {
typename Lhs::InnerIterator it(lhs, i); typename Lhs::InnerIterator it(lhs, i);
ei_assert(it.index() == i); ei_assert(it && it.index() == i);
other.coeffRef(i,col) = tmp/it.value(); other.coeffRef(i,col) = tmp/it.value();
} }
} }
@ -119,7 +119,7 @@ struct ei_sparse_solve_triangular_selector<Lhs,Rhs,Mode,LowerTriangular,ColMajor
ei_assert(it.index()==i); ei_assert(it.index()==i);
tmp /= it.value(); tmp /= it.value();
} }
if (it.index()==i) if (it && it.index()==i)
++it; ++it;
for(; it; ++it) for(; it; ++it)
other.coeffRef(it.index(), col) -= tmp * it.value(); other.coeffRef(it.index(), col) -= tmp * it.value();