The doc specifies f16 and f8 storage classes, which do not
have a corresponding uniform vector in SRFI 160 (or 4).

IEEE 754 specifies a half precision which is widely used
and can be assumed for f16, having 5 bits for the exponent
and 10 for the significand.

There are a number of competing implementations of 8-bit
floats, and at such extreme compression the best split of
exponent and significand becomes application specific.

What is the intended representation of f8-storage-class?

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Alex