QuLogic opened a new issue, #44767:
URL: https://github.com/apache/arrow/issues/44767

   ### Describe the bug, including details regarding any error messages, 
version, and platform.
   
   The above named tests fail in the following way:
   ```
   [ RUN      ] Float16Test.ToBytes
   
/builddir/build/BUILD/libarrow-16.1.0-build/apache-arrow-16.1.0/cpp/src/arrow/util/float16_test.cc:332:
 Failure
   Expected equality of these values:
     load()
       Which is: 7376
     0xd01c
       Which is: 53276
   
   [  FAILED  ] Float16Test.ToBytes (0 ms)
   [ RUN      ] Float16Test.FromBytes
   
/builddir/build/BUILD/libarrow-16.1.0-build/apache-arrow-16.1.0/cpp/src/arrow/util/float16_test.cc:361:
 Failure
   Expected equality of these values:
     Float16::FromLittleEndian(data)
       Which is: 0.00469971
     Float16(0x1cd0)
       Which is: 7376
   
   [  FAILED  ] Float16Test.FromBytes (0 ms)
   ```
   The [tests 
themselves](https://github.com/apache/arrow/blob/4c2aef7b231f129db7b3bdb232c6da00542ba7b3/cpp/src/arrow/util/float16_test.cc#L323-L364)
 look suspicious to me, as they start with a "native" check, but use a fixed 
byte order.
   
   ### Component(s)
   
   C++


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