pub unsafe extern "C" fn igraph_lapack_dgeev(
A: *const igraph_matrix_t,
valuesreal: *mut igraph_vector_t,
valuesimag: *mut igraph_vector_t,
vectorsleft: *mut igraph_matrix_t,
vectorsright: *mut igraph_matrix_t,
info: *mut c_int,
) -> igraph_error_t