This folder contains the CPU/GMP search engines.
cc_gmp_v33_03.c
Legacy baseline engine from the March 2026 public release. Use this as the
reference implementation for correctness and comparisons.
cc_gmp_v34_bit-vector_10.c
Experimental CPU engine based on John Armitage’s bit-vector L2 filter plus
additional optimizations. Tuned for high-bit searches (notably 153-bit CC15+)
where GPU wide-mode buffering makes GPU runs slower, so the CPU path can
dominate.
README_v34_bit-vector.md
Focused documentation for the v34 bit-vector engine.