Dear all,
Matrix multiplication requires resulting matrix to be initialized. Even if
rebuild_sparsity_C = true .
template <typename number>
template <typename numberB, typename numberC>
void
SparseMatrix<number>::mmult (SparseMatrix<numberC> &C,
const SparseMatrix<numberB> &B,
const Vector<number> &V,
const bool
rebuild_sparsity_C) const
{
const bool use_vector = V.size() == n() ? true : false;
Assert (n() == B.m(), ExcDimensionMismatch(n(), B.m()));
Assert (cols != 0, ExcNotInitialized());
Assert (B.cols != 0, ExcNotInitialized());
Assert (C.cols != 0, ExcNotInitialized()); //HERE!!
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