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oe1cxw's profile
Claire Xen 🏳️‍⚧️🏳️‍🌈🧙🏻‍♀️ BLM 🏴🚩
Claire Xen 🏳️‍⚧️🏳️‍🌈🧙🏻‍♀️ BLM 🏴🚩
Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩
@oe1cxw

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Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩

@oe1cxw

Neurodiverse trans geek girl. Yosys, RISC-V, SAT/SMT.

She/her/hers
clairexen.net
Joined September 2014

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    1. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 11 Oct 2018
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      Can you name applications for CLMUL that are not CRC, GCM, hashing/rng, or Erasure Code? I'm trying to create a list of possible applications. #RISCV #Bitmanip #Followerpower cc @rygorous @geofflangdale @alt_kia @lemire @rrika9

      3 replies 5 retweets 7 likes
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    2. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 11 Oct 2018
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      clmul with -1 performs a prefix xor. Does anyone know a fancy use-case for that maybe?

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    3. Fabian Giesen‏ @rygorous 11 Oct 2018
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      Replying to @oe1cxw

      Fabian Giesen Retweeted Fabian Giesen

      Gray code decoding!https://twitter.com/rygorous/status/1037481458447736832 …

      Fabian Giesen added,

      Fabian Giesen @rygorous
      Apropos carry-less multiplies: you may know that binary->Gray code encoding is easy ("x ^ (x >> 1)") and decoding somewhat harder, usually done in parallel prefix form. But you can also do it with a single carry-less multiply! (Not surprising, but cute.) pic.twitter.com/Imxr10EQl4
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      1 reply 0 retweets 6 likes
      Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 11 Oct 2018
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      Replying to @rygorous

      Thanks! That's a good one!

      12:05 PM - 11 Oct 2018
      1 reply 0 retweets 0 likes
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        1. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 12 Oct 2018
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          Replying to @oe1cxw @rygorous

          JFYI: I've now added this as clmul application to the current xbitmanip draft at https://raw.githubusercontent.com/cliffordwolf/xbitmanip/master/xbitmanip-draft.pdf … (you are now listed as contributor to xbitmanip, btw) and I've added the following invariant to my test cases.pic.twitter.com/zRtU4R5ztX

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