[Octave-bug-tracker] [bug #44201] "whos" and gui display non-integer sizes inf/nan poorly

[Dan Sebald]

Follow-up Comment #4, bug #44201 (project octave):

1.
Most of the follow examples from the project test for xisinf() and xisnan():


address@hidden grep '"NaN"' * -r
Binary file doc/interpreter/octave.info-5 matches
etc/OLD-ChangeLogs/ChangeLog.1: with a sign) or "NaN").
gnulib-hg/m4/strtod.m4:    const char *string = "NaN";
junk.log:that was checked to see if it was 'N' for "NaN" rather than "NA".
libinterp/parse-tree/lex.ll:             || tok == "NaN" || tok == "nan")))
libinterp/corefcn/str2double.cc:%!assert (str2double ("NaN"), NaN)
libinterp/corefcn/data.cc:                      lo_ieee_float_nan_value (),
"NaN");
libinterp/corefcn/pr-output.cc:            os << std::setw (fw) << "NaN";
libinterp/corefcn/pr-output.cc:            os << "NaN";
libinterp/corefcn/oct-stream.cc:            tval = (lo_ieee_is_NA (dval) ?
"NA" : "NaN");
libinterp/octave-value/ov-fcn-inline.cc:                          tmp_arg !=
"NaN" && tmp_arg != "nan" &&
liboctave/util/lo-utils.cc:    os << "NaN";
liboctave/util/lo-utils.cc:    os << "NaN";
scripts/general/num2str.m:%!assert (num2str (nan), "NaN")
scripts/general/validateattributes.m:          w_size_str = strrep
(w_size_str, "NaN", "N");
scripts/testfun/assert.m:%!   elseif (strfind (errmsg, "NaN"))


The project should have "NaN" ("Inf") defined as NANSTRING (INFSTRING) or
something similar.

2.
Well, seems like some kind of change is needed...  The attached size.m file,
is that supposed to be general?  If so, this doesn't seem correct:


octave:1> x = [1 2 3]
x =

   1   2   3

octave:2> dim = 1
dim =  1
octave:3> size(x,dim)
ans = NaN


Also, the range test should have a couple more checks for greater than 2:


function [n, m] = size(x, dim)

  sz = [nan inf];

  if ((nargin >= 2) || ...
      (nargout >= 2) || ...
      (nargin == 2) && (nargout == 2))
    error('size: invalid call')
...
end



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