presto-spi/src/main/java/io/prestosql/spi/type/UnscaledDecimal128Arithmetic.java/UnscaledDecimal128Arithmetic/reverse
class UnscaledDecimal128Arithmetic:    private static void reverse(final byte[] a)
    {
        final int length = a.length;
        for (int i = length / 2; i-- != 0; ) {
            final byte t = a[length - i - 1];
            a[length - i - 1] = a[i];
            a[i] = t;
        }
    }