[Octave-bug-tracker] [bug #54302] power operator: 0.^0 results in NaN in some case

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?54302>

                 Summary: power operator: 0.^0 results in NaN in some case
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 13 Jul 2018 07:22:49 AM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.0
        Operating System: GNU/Linux

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Details:

Normally 0.^0 is 1, but in some case it results in NaN.


octave:495>  0 .^ 0
ans =  1
octave:496>  complex(0) .^ 0
ans =  1
octave:497>  0 .^ complex(0)
ans =  NaN + NaNi
octave:498>  complex(0) .^ complex(0)
ans =  NaN + NaNi



octave:502>  [1 2j;3j 0] .^ 0
ans =

   1   1
   1   1

octave:503>  [1 2j;3j 0] .^ [0 0;0 0]
ans =

   1   1
   1   1

octave:504>  [1 2j;3j 0] .^ [0 0]
ans =

     1 +   0i     1 +   0i
     1 +   0i   NaN - NaNi

octave:505>  [1 2j;3j 0] .^ [0;0]
ans =

     1 +   0i     1 +   0i
     1 +   0i   NaN - NaNi

octave:507>  [3j 0] .^ [0;0]
ans =

     1 +   0i   NaN - NaNi
     1 +   0i   NaN - NaNi

octave:508>  [2j;0] .^ [0 0]
ans =

     1 +   0i     1 +   0i
   NaN - NaNi   NaN - NaNi






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