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astrofrog
The
quantize.cfile in cfitsio is ~4000 lines long and depends on other parts of cfitsio, so might not be easy to use directly. I think we can't use the numcodecs Quantize codec because the FITS standard (section 10.2) describes a set of very specific algorithms to use for quantization.However, I think the algorithms might be simple enough that we can re-implement ourselves (perhaps even with just Python + Numpy). One thing we will need is the list of 10000 random numbers mentioned in 10.2 of the FITS standard, but we could potentially even store the hard-coded values as this should only take 40kb.