[Octave-bug-tracker] [bug #47744] printf family of functions does not support %b[ouxX] or %t[ouxX] conversions

[Mike Miller]

URL:
  <http://savannah.gnu.org/bugs/?47744>

                 Summary: printf family of functions does not support %b[ouxX]
or %t[ouxX] conversions
                 Project: GNU Octave
            Submitted by: mtmiller
            Submitted on: Wed 20 Apr 2016 02:26:03 PM PDT
                Category: Octave Function
                Severity: 3 - Normal
                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:

For Matlab compatibility, the printf family of functions should support the
following conversion specifiers:


%bo, %bu, %bx, %bX - double-precision value representation in octal, decimal,
or hexadecimal
%to, %tu, %tx, %tX - single-precision value representation in octal, decimal,
or hexadecimal


I'm not completely sure, but I guess they mean it should interpret the
variable's storage location as if it were an integer and display the integer
value in the appropriate base.

They give these two examples:


sprintf('%bx', pi) → 400921fb54442d18
sprintf('%tx', pi) → 40490fdb


These are the same values that Octave gives for something like


dec2hex (typecast (double_value, "uint64"))
dec2hex (typecast (single_value, "uint32"))






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