pub unsafe extern "C" fn igraph_running_mean(
data: *const igraph_vector_t,
res: *mut igraph_vector_t,
binwidth: igraph_int_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_running_mean(
data: *const igraph_vector_t,
res: *mut igraph_vector_t,
binwidth: igraph_int_t,
) -> igraph_error_t