speeding up + ctfe question

[maarten van damme]

well, maybe, looking back at it, a range isn't the ideal way to go
about generating primes easily. I'm going to implement the sieve of
Atkin and make it return an array of primes up to a given number. This
might be a bit more useful and fast.

Is there somewhere I can catch up on ctfe? after reading andrei's book
and the documentation it's still not clear to me how I could make my
setquicktestsize function run at compile time.