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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. Daniel Lemire‏ @lemire 29 Nov 2018
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      I see reports that ((int64_t)x >> 63) is undefined behaviour in C. Ok. Fine. Is there an equivalent that is somehow “defined”? I expect my hardware to use 2-complement. // cc @johnregehr

      9 replies 0 retweets 4 likes
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    4. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 29 Nov 2018
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      Replying to @johnregehr @lemire

      I thought right shifting a negative number is implementation defined.

      1 reply 0 retweets 0 likes
    5. Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 29 Nov 2018
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      Replying to @oe1cxw @johnregehr @lemire

      Yup. It is.pic.twitter.com/xHXop1DnB3

      1 reply 0 retweets 3 likes
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      Claire Xen  🏳️‍⚧️ 🏳️‍🌈 🧙🏻‍♀️ BLM  🏴 🚩‏ @oe1cxw 30 Nov 2018
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      Replying to @johnregehr @lemire

      For xbitmanip I use C code to formally define the behavior of instructions. For that I'm trying to avoiding implementation defined behavior for obvious reasons.pic.twitter.com/29Wn5baIzT

      2:54 PM - 30 Nov 2018
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      • Rich Felker John Regehr Uncarved Bitmap
      0 replies 0 retweets 3 likes

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