Function sumByKey

src/api/cpp/reduce.cpp:29–36

}

void sumByKey(array &keys_out, array &vals_out, const array &keys,
              const array &vals, const int dim) {
    af_array okeys, ovals;
    AF_THROW(af_sum_by_key(&okeys, &ovals, keys.get(), vals.get(),
                           getFNSD(dim, vals.dims())));
    keys_out = array(okeys);
    vals_out = array(ovals);
}

void sumByKey(array &keys_out, array &vals_out, const array &keys,
              const array &vals, const int dim, const double nanval) {