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The expected output is that the array is encoded without an exception.
The array has ndarray.nbytes=0 and ndarray.dtype.itemsize=0. NumCodecs passes these into Blosc, and eventually compute_blocksize gets called with typesize=0 and nbytes=0, causing compute_blocksize to return 0. This triggers a floating point exception on this line in initialize_context_compression().
Version and installation information
NumCodecs 0.12.1
Python 3.11.4
Linux
NumCodecs was installed using pip into a virtual environment