pub type igraph_arpack_function_t = Option<unsafe extern "C" fn(to: *mut igraph_real_t, from: *const igraph_real_t, n: c_int, extra: *mut c_void) -> igraph_error_t>;Aliased Type§
pub enum igraph_arpack_function_t {
None,
Some(unsafe extern "C" fn(*mut f64, *const f64, i32, *mut c_void) -> u32),
}