[Octave-bug-tracker] [bug #39838] str2double ('') gives [](0x1) instead of NaN

[Ben Kurtz]

Follow-up Comment #13, bug #39838 (project octave):

WRT Matlab's behavior on multi-row strings:
* Matlab's behavior is undocumented.  no mention is made in the str2double
documentation of what the behavior will be
* Other similar functions (e.g. hex2num) take a similar interpretation of
converting one number per row.
* Matlab's behavior is illogical, as it converts down columns, rather than
across rows.  In other words, it follows the data order in memory (completely
ignoring the array size) rather than following standard (english at least)
language conventions.
* Matlab's behavior is inconsistent between versions.  Philip's example of

str2double (['1'; ' '; '2'])

errors out on his version of matlab, and simply returns NaN in the version of
matlab I have installed.

I'll see about a changeset at some point if no one else gets to it first.

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