What fraction of a Pawn do the most powerful chess engines (Komodo, Stockfish, Houdini, Fritz, Hiarcs, Gull, ...) use as their evaluation unit? I've heard that the most common evaluation unit is 1/100 of a Pawn. But some engines use 1/1000 of a Pawn as their evaluation unit.

I've also heard that Stockfish used 1/256 of a Pawn as its evaluation unit (although it was 5 years ago, maybe it has changed today).

So what about the strongest and best-know chess engines: Komodo, Houdini, Fritz, Hiarcs, Gull, etc... what evaluation unit do they use?
Chess engines use centi-pawns.

https://chessprogramming.wikispaces.com/Centipawns