Function blas_dgemv_array 

pub fn blas_dgemv_array(
    transpose: bool,
    alpha: f64,
    a: &Matrix,
    x: &[f64],
    beta: f64,
    y: &mut [f64],
) -> Result<()>

In-place matrix-vector product y <- alpha * op(A) * x + beta * y on plain slices (igraph_blas_dgemv_array).

Binds igraph_blas_dgemv_array.

Errors

If the lengths of x and y do not match op(A).