this post was submitted on 04 May 2024
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How hard can generating 1024-bit primes really be? (glitchcomet.com)
submitted 6 months ago by farcaster@lemmy.world to c/rust@programming.dev
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[โ€“] farcaster@lemmy.world 1 points 6 months ago (1 children)

I doubt doing it in software like that outperforms sqrtss/sqrtsd. Modern CPUs can do the conversions and the floating point sqrt in approximately 20-30 cycles total. That's comparable to one integer division. But I wouldn't mind being proven wrong.

[โ€“] blazebra@programming.dev 2 points 6 months ago

Integer sqrt can be used for integers with any length, not only for integers fit into f64