Function dlog_vec_loop_add 

pub unsafe extern "C" fn dlog_vec_loop_add(
    v: *mut mp_limb_t,
    nv: mp_limb_t,
    a: mp_limb_t,
    va: mp_limb_t,
    mod_: nmod_t,
    na: mp_limb_t,
    order: nmod_t,
)