[Octave-bug-tracker] [bug #51888] scanf / fscanf / sscanf should be able to return int64 / unit64 values

[Mike Miller]

URL:
  <http://savannah.gnu.org/bugs/?51888>

                 Summary: scanf / fscanf / sscanf should be able to return
int64 / unit64 values
                 Project: GNU Octave
            Submitted by: mtmiller
            Submitted on: Tue 29 Aug 2017 11:16:58 AM PDT
                Category: Octave Function
                Severity: 1 - Wish
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

According to Matlab's docs for fscanf and sscanf, if the format string
conversions are all signed 64-bit integer conversions ("%ld" or "%li"), then
the return value should be a int64-valued array. If the format string is
entirely unsigned 64-bit conversions ("%lo", "%lu", or "%lx"), then the return
value should be a uint64-valued array.

This was discussed and confirmed in bug #47741, but a new bug was never filed
for this remaining outstanding compatibility issue.

We might want to extend this to also cover the Octave scanf extension using
the "C" option, which uses a different code base for its conversions.




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