Files
amethyst/quartz
Claude 7e8a060f17 perf: optimize reduceSelf for secp256k1, pre-allocate wNAF scratch
Two microoptimizations:

1. reduceSelf: exploit P's structure (P[1..3] = 0xFFFFFFFFFFFFFFFF).
   a >= P only if all top 3 limbs are max AND a[0] >= P[0]. The first
   check (a[3] == -1) fails >99.99% of the time, making this a single
   branch miss prediction instead of a 4-limb comparison loop.
   Called ~1,300× per verify, ~500× per ECDH.

2. Pre-allocate wNAF IntArrays and scratch MutablePoint/LongArray in
   PointScratch. Eliminates 8-12 IntArray(145) + 8-12 LongArray(4)
   allocations per mul/mulDoubleG call. Adds wnafInto() to Glv that
   writes into caller-provided arrays.

https://claude.ai/code/session_01BhU63WUe9AhikZxRdw3Lpg
2026-04-06 18:33:15 +00:00
..
2026-04-01 15:45:46 -04:00