pub unsafe extern "C" fn igraph_sparsemat_colmaxs(
A: *mut igraph_sparsemat_t,
res: *mut igraph_vector_t,
) -> igraph_error_tpub unsafe extern "C" fn igraph_sparsemat_colmaxs(
A: *mut igraph_sparsemat_t,
res: *mut igraph_vector_t,
) -> igraph_error_t