westonpace opened a new issue, #47846:
URL: https://github.com/apache/arrow/issues/47846
### Describe the enhancement requested
Currently we state:
```
# fp16 literals are encoded as user defined literals with
# a google.protobuf.UInt32Value message where the lower 16 bits are
# the fp16 value.
```
I think "lower 16 bits of UInt32Value" is well defined. However, it is not
clear how the fp16 value should be encoded. Should the upper byte of the fp16
value go in the lowest 8 bits of the UInt32Value or the highest 8 bits of the
UInt32Value?
Hopefully this is not controversial and just under-specified. I will add a
PR to adopt little-endian encoding.
### Component(s)
Format
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