anematode

13 ms·

1. 241.▲
   Beating Google's kernelCTF PoW using AVX512(anemato.de)

   337 points by anematode 1y ago|94 comments
2. 242.▲
   by anematode 2y ago

   As a vaguely related observation, I recently found a bug in a JVM written in JavaScript which implemented the l2f (64-bit long to 32-bit float) instruction incorrectly as Math.fround(Number(x)), performing an intermediate conversion to doub
3. 243.▲
   by anematode 2y ago

   You can get a fast equivalent to his zero-padding method on recent-ish x86 and ARM SVE. The x86 assembly would look like (untested): compare: ;; lhs in eax, rhs in ebx mov ecx, 0b11111011111101111 pdep eax, eax, ecx pdep eb