Function average_finalize

methods/array_ops/src/pg_gp/array_ops.c:1087–1097

}

static
inline
Datum
average_finalize(Datum elt,int size,Oid element_type){
    float8 value = datum_float8_cast(elt, element_type);
     if (size == 0) {
        elog(WARNING, "Input array only contains NULL or NaN, returning 0");
        return Float8GetDatum(0);
    }
    return Float8GetDatum(value/(float8)size);
}

static
inline