Function tsk_mutation_table_takeset_columns 

pub unsafe extern "C" fn tsk_mutation_table_takeset_columns(
    self_: *mut tsk_mutation_table_t,
    num_rows: tsk_size_t,
    site: *mut tsk_id_t,
    node: *mut tsk_id_t,
    parent: *mut tsk_id_t,
    time: *mut f64,
    derived_state: *mut c_char,
    derived_state_offset: *mut tsk_size_t,
    metadata: *mut c_char,
    metadata_offset: *mut tsk_size_t,
) -> c_int

Available on crate feature bindings only.