Function af_sum_by_key

src/api/c/reduce.cpp:510–513

}

af_err af_sum_by_key(af_array *keys_out, af_array *vals_out,
                     const af_array keys, const af_array vals, const int dim) {
    return reduce_promote_by_key<af_add_t>(keys_out, vals_out, keys, vals, dim);
}

af_err af_product_by_key(af_array *keys_out, af_array *vals_out,
                         const af_array keys, const af_array vals,