[Octave-bug-tracker] [bug #53434] isprime.m:missing error, warning for negative numbers

[Dildar Sk]

URL:
  <http://savannah.gnu.org/bugs/?53434>

                 Summary: isprime.m:missing error,warning for negative numbers
                 Project: GNU Octave
            Submitted by: hodor123456
            Submitted on: Fri 23 Mar 2018 06:33:40 AM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Missed Error or Warning
                  Status: None
             Assigned to: None
         Originator Name: Dildar SK
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

When I try on MATLAB,
>> isprime(-12)
Error using isprime (line 19)
All entries of X must be nonnegative integers.
 
>> isprime(-25)
Error using isprime (line 19)
All entries of X must be nonnegative integers.

But when I try on GNU Octave,

isprime (-12)
ans = 0
>> isprime(-36)
ans = 0
>> isprime(-23)
ans = 1

So,it's escaping error,warnings relative to MATLAB.




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