I am having a SparseMatrix A which has a certain sparsity pattern and a
vector V.

How to perform the matrix multiplication


where diag(V) is a diagonal matrix with the vector V in the main diagonal.

is there any such function in dealii?

how to create the SparseMatrix diag(V) for a given vector V?

to my knowledge dealii on provided

A.mmult(C,B,V)  for   C= A*diag(V)*B or

A.mmult(C,B)  for   C= A*B


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