[janwas]

Any suggestions for improvement? We went through >5 iterations of the dispatching and I am fairly confident this is about as good as it gets in current C++. I suppose "macro hell" is a matter of taste. Objectively, we have six dispatch related macros in the example: https://gcc.godbolt.org/z/KM3ben7E The ~two dozen lines of boilerplate are generally copied from an example. But why multi-file?

[nnevatie]

The link doesn't work - could you link it again? I might be basing my above comment on and older version of Highway.

[janwas]

Oops, the final T got cut off somehow, sorry about that.

https://gcc.godbolt.org/z/KM3ben7ET