pub unsafe extern "C" fn igraph_even_tarjan_reduction(
graph: *const igraph_t,
graphbar: *mut igraph_t,
capacity: *mut igraph_vector_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_even_tarjan_reduction(
graph: *const igraph_t,
graphbar: *mut igraph_t,
capacity: *mut igraph_vector_t,
) -> igraph_error_t