[Octave-bug-tracker] [bug #36133] num2str displays more than 16 significant digits for large integer inputs

[Rik]

URL:
  <http://savannah.gnu.org/bugs/?36133>

                 Summary: num2str displays more than 16 significant digits for
large integer inputs
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Sun 08 Apr 2012 08:08:33 PM PDT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: Confirmed
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

Example code:



num2str (1e25)
ans = 10000000000000000905969664


This should be '1' with 25 zeros after it.

Matlab correctly masks large integer inputs to just 16 significant digits.

For something really wacky try


num2str (realma)







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