[Octave-bug-tracker] [bug #39378] Possible bug in randperm

[Marco Caliari]

URL:
  <http://savannah.gnu.org/bugs/?39378>

                 Summary: Possible bug in randperm
                 Project: GNU Octave
            Submitted by: caliari
            Submitted on: Mon 01 Jul 2013 07:28:51 AM GMT
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.6.2
        Operating System: GNU/Linux

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Details:

Dear all,

the following


N=30000^2;,M=100000;,randperm(N,M);


gives me the "memory exhausted or requested size too large for range of
Octave's index type" error. I think it should work since:

1) N < intmax
2) M < N/5 and so O(M) memory should be used (according to help)
3) Matlab works with such an example

Best regards,

Marco




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