Bug #18188: -1 ** 0 is 1 not -1

• Status: Rejected
• Assignee: -
• Target version: -
• 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

[[e-mail] (Robert Burrowes)]

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

[jeremyevans0 (Jeremy Evans)]

• Status changed from Open to Rejected

-1**0 is parsed as -(1**0), not (-1)**0. (-1)**0 returns 1

[shyouhei (Shyouhei Urabe)]

• Is duplicate of Bug #13152: Numeric parsing differences between ruby <-> crystal added
• Is duplicate of Bug #16677: Negative integer powered (**) to a float number results in a complex added