presto-main/src/main/java/io/prestosql/type/DecimalOperators.java/DecimalOperators/multiplyShortShortLong
class DecimalOperators:    @UsedByGeneratedCode
    public static Slice multiplyShortShortLong(long a, long b)
    {
        return multiplyLongLongLong(encodeUnscaledValue(a), encodeUnscaledValue(b));
    }