[GAP Forum] binary arithmetic
Luca Giuzzi
luca.giuzzi at gmail.com
Fri Oct 24 14:43:27 BST 2014
Dear Forum,
I have been working with some elements defined over a large finite
field (K=GF(2^20), actually) and I have a few questions.
1) does there exist a "proper" way to obtain a vector representation
(any representation is fine) for elements of K over the ground field?
I have successfully used the idiom x![1] for x in K, but I suspect
that this is more of an implementation detail than what is supposed to
be used.
2) In any case ended up working with sets of vectors of GF(2)^20. I
would have liked to be able to represent each vector as an integer
(this is easy) and to implement the sum of any two of them as a xor
between their representatives. I have not been able to find a xor
operation being exposed (not even in the cvec package). Am I missing
something?
[actually, I ended up writing an external program to perform the
checks I was interested in]
With many thanks and kind regards,
lg
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