NEON

ARM's instruction set for doing the same math on many numbers at once.

NEON is ARM's SIMD (single-instruction, multiple-data) extension: one instruction operates on a whole vector of values in parallel, dramatically speeding up array-heavy work like image processing and signal math. Code can include a dedicated NEON path on ARM chips (aarch64) to hit this fast lane. It's the ARM counterpart to Intel's SSE/AVX SIMD extensions.