Hi,
I'd like to multiply a symmetric matrix (using selfAdjointView<Upper>) with a matrix.
I can I do please?
Thanks

C = A.selfadjointView<Lower>() * B;

thanks but sorry I wasn't clear.
I have an array double* ap which represents a symmetric matrix (as in lapack).
So I map it like this Map<SelfAdjointView<double,Upper> > apMap (t,n);
And i have a double matrix B and I want to do
C=apMap*B
is it possible? (if I write it like this it doesn't work the operator * doesn't exist...)

is ap in a packed format? if so Eigen cannot handle it. Otherwise, you should rather do:

Map<MatrixXd> (ap,n,n).selfadjointView<Upper>() * B;

yes ap is in a packed format...

The packed format is not suited for fast matrix-matrix products.