[Octave-bug-tracker] [bug #32980] for backend FLTK, real is used for axes. double should be used

[Michael Godfrey]

Follow-up Comment #1, bug #32980 (project octave):

As Shai pointed out, the problem seems to be
in OpenGL which accepts double, but converts
to single.  This is not really made clear in
the web pages I have read, but it is mentioned that
they the work in the precision available in the
GPU hardware which is typically 32bit.  Newer
hardware provides 64bit, so there is some
indication that a future OpenGL will provide
64bit.  In the meantime, this report could be
dealt with by providing a warning that the plot
cannot be rendered correctly due to data out of 
range of representable values.  

The current behavior is not good since it could
lead to plots which are seriously, but not always
obviously, in error.

Michael


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