[Octave-bug-tracker] [bug #61715] Inconsistent NaN results when calculating exponential function (0+0i)^0 with Apple Silicon M1

[Jinchuan Tang]

URL:
  <https://savannah.gnu.org/bugs/?61715>

                 Summary: Inconsistent NaN results when calculating
exponential function (0+0i)^0 with Apple Silicon M1
                 Project: GNU Octave
            Submitted by: jinchuantang
            Submitted on: Wed 22 Dec 2021 02:18:57 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Jinchuan Tang
        Originator Email: 
             Open/Closed: Open
                 Release: 6.4.0
         Discussion Lock: Any
        Operating System: Mac OS

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Details:

Dear Octave team,
I tried both Homebrew and Octave.app, it all give a different result when
compared with Windows. I don't know if this is related to OpenBlas or
something else. Please have a look. Many thanks!
>> bbb = complex(0+0i)
bbb =  0 + 0i
>> bbb.^2
ans = 0
>> bbb.^0
ans =  NaN - NaNi

For windows, bbb.^0 will produce ans = 1 instead of NaN - NaNi.

Best wishes,
Jinchuan




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