Issue #18188 has been reported by r.burrowes / auckland.ac.nz (Robert Burrowes).

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Bug #18188: -1 ** 0 is 1 not -1
https://bugs.ruby-lang.org/issues/18188

* Author: r.burrowes / auckland.ac.nz (Robert Burrowes)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-freebsd11.2]
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
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Any negative number to the power of 0 is 1, but ruby is returning -1.

i.e. it should be   n == 0 ? 1 : x ** n

/usr/local/ruby3.0/bin/ruby
puts -1**0
-1





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