> Now I want to multiply two matrix that stored in two vector, but I dont want > to restore the matrix from vector. Doing multply based on vectores by using > BLAS.
You probably want to use a matrix view [1], and likely gsl_matrix_view_vector. There's a vector view example in the manual [2]. Hope that helps, Rhys [1] https://www.gnu.org/software/gsl/manual/html_node/Matrix-views.html#Matrix-views [2] https://www.gnu.org/software/gsl/manual/html_node/Example-programs-for-matrices.html#Example-programs-for-matrices
