[Octave-bug-tracker] [bug #56342] function unifrnd(0, 0) returns "NaN", but not 0.

[Liming He]

URL:
  <https://savannah.gnu.org/bugs/?56342>

                 Summary: function unifrnd(0,0) returns "NaN", but not 0.
                 Project: GNU Octave
            Submitted by: liming_he
            Submitted on: Fri 17 May 2019 09:29:41 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Liming He
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.4.0
        Operating System: GNU/Linux

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Details:


Problem description: 

The function 'unifrnd' belongs to 'octave-statistics' packages. When
unifrnd(0, 0) is called, it is supposed to return 0, but it returns "NaN",
which is incompatible to the result (0) from Matlab (R2017B). 

Explanation of unifrnd from Matlab:  
>> help unifrnd
 unifrnd Random arrays from continuous uniform distribution.


Result from Octave (version 3.8.2, 4.2 and 4.4)

octave:1> unifrnd(0,0)
ans = NaN


Result from Matlab (R2017b): 
>> unifrnd(0,0)
ans = 
     0







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