[netcdf-hdf] what the heck is fletcher32 all about, anyway?

Howdy Guys!

With the release of HDF5 1.8.0 I am taking a spin through the netCDF-4
documentation...

I realize that there is very little said about the fletcher32
filter. Because I really don't know anything about it. 

I know you can turn it on with netCDF-4! But I don't know why you
would want to.

In the HDF5 docs I find very little, only that this is the "Fletcher32
checksum filter."

What happens if the checksum doesn't add up when reading the data?

Thanks!

Ed

-- 
Ed Hartnett  -- ed@xxxxxxxxxxxxxxxx