[Octave-bug-tracker] [bug #56941] format rat or rats display 0 rather than rational approximation for small numbers

[Rik]

URL:
  <https://savannah.gnu.org/bugs/?56941>

                 Summary: format rat or rats display 0 rather than rational
approximation for small numbers
                 Project: GNU Octave
            Submitted by: rik5
            Submitted on: Mon 23 Sep 2019 01:01:33 PM PDT
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: Confirmed
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

For small numbers, the 'rat' format prints '0' rather than either a rational
approximation or simply an indication that it cannot display the correct
value.

As an example,


octave:43> format rat
octave:44> x = pi*1e-9
x = 0


However, Matlab displays


1/318309886


which indeed is a reasonable approximation.





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