Work around invalid SIMD `bswap`

[kimikage]

I have not yet been able to reproduce the issue #166. This adds a workaround as a quick fix. I think it would be good to see how this changes the result of PkgEval first.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 92.69%. Comparing base (25cf338) to head (ca44787).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #171   +/-   ##
=======================================
  Coverage   92.68%   92.69%           
=======================================
  Files          13       13           
  Lines        1121     1122    +1     
=======================================
+ Hits         1039     1040    +1     
  Misses         82       82           

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