presto-main/src/main/java/io/prestosql/type/DecimalOperators.java/DecimalOperators/addShortLongLong
class DecimalOperators:    @UsedByGeneratedCode
    public static Slice addShortLongLong(long a, Slice b, int rescale, boolean left)
    {
        return internalAddLongLongLong(unscaledDecimal(a), b, rescale, left);
    }