Function _nmod_vec_dot_strided 

pub unsafe extern "C" fn _nmod_vec_dot_strided(
    vec1: nn_srcptr,
    stride1: slong,
    vec2: nn_srcptr,
    stride2: slong,
    len: slong,
    mod_: nmod_t,
    params: dot_params_t,
) -> ulong