[Octave-bug-tracker] [bug #64361] sinc() return NaN on sinc(-1:0.20:1-0.20) expression

[Rik]

Follow-up Comment #14, bug #64361 (project octave):

I always suspected this is something to do with ranges, but I'm trying to
pinpoint where.

Could you try this code:


format longe
x = (-1:0.2:1-0.2)


I'm trying to see whether the sixth element is really presented as 0 or as
something small like 5e-17.

Next piece of code to execute


y = (x != 0)


The sixth element should be false, but probably isn't.

What this could mean is that range extraction for a single element is
different then than for an index vector.  There are different routines in
liboctave/array/Range.h for the two situations.


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