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> I like the code style, this is pretty nice C.

Or is it? https://github.com/iczelia/balrogg/blob/7008bdc10ff25ad87105...

I admit I'm not a fan of the loop macros, or writing constants like 0xd80000 in decimal, or having all of that code inlined with no further explanation or git history.

But I think it's just that this file is lifting parts of the logic from PAQ8 (the inlined num_states/next_state named in a comment sure look exactly like PAQ functions translated into C, which, kudos to PAQ for having extensive comments in their code by the way).

I'm a bit disappointed that PAQ isn't mentioned in the README, and only very obliquely in the code, if that's where those functions come from. PAQ is GPLv3, at least a mention could have been nice (assuming I'm not wrong about the source of that logic).

I use the PAQ terminology as it is likely to be familiar to other compression experts. However, the lineage to PAQ is very, very limited, and many other compressors also re-use its common ideas.

I see, my bad. I tried to follow the comment and jumped to conclusions, sorry about that.

This code looks like Fortran55

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