[CHY872]

'Please translate this AVX-256 algorithm to Arm NEON' is absolutely a prompt I'd give ChatGPT, and similar prompts have revealed new and useful intrinsics. Of course, results to be checked.

Assurance is a complex topic, and any safety critical device should have a carefully thought through architecture and rigorous testing program which minimises the risk of incidents. It therefore seems scarcely relevant here, beyond the fact that a well defined delivery system should be able to handle multiple human errors during implementation without leading to crucial failure modes occuring.