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From Matthias Boehm <>
Subject Re: Can BITWISE_XOR be added. Thanks.
Date Mon, 01 Jan 2018 19:48:10 GMT
Hi Janardhan,

sure - adding such bitwise operations is a nice addition.

There is still an open task (SYSTEMML-1931) to generalize the existing NOT,
AND, OR, and XOR to matrix arguments which should be straightforward as is
seamlessly fits into the existing binary operator. In a separate task, we
could then also add the bitwise versions of these operators. I would
recommend to stick to R's builtin function names though, to avoid
unnecessary divergence.

bitwAnd(a, b)
bitwOr(a, b)
bitwXor(a, b)

bitwShiftL(a, n)
bitwShiftR(a, n)


On Mon, Jan 1, 2018 at 11:00 AM, Janardhan Pulivarthi <> wrote:

> Hi all,
> I am using the following line code operation
> `
> x_tmp = bitwise_xor( v_index, as.scalar(V[v_index,]) )
> `
> Can this `bitwise_xor` be added?. I will try to take up the task, if there
> it fits into dml.
> Thanks,
> Janardhan

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