Sounds familiar. If one of the authors Lemire? Of course.

SIMD-accelerated integer-to-string conversion https://lemire.me/blog/2026/05/18/simd-accelerated-integer-t...

Other speedy things:

On-Demand JSON: A Better Way to Parse Documents? https://lemire.me/en/publication/arxiv231217149/

Parsing Millions of URLs per Second https://lemire.me/en/publication/arxiv231110533/

Transcoding Unicode Characters with AVX-512 Instructions https://lemire.me/en/publication/arxiv221205098/