[Octave-bug-tracker] [bug #36732] interp1 does not check input for monotonicity

[Michael Godfrey]

Follow-up Comment #21, bug #36732 (project octave):

I read the code and documentation more carefully.
It appears the a pair of duplicate points in X are
allowed.  The documentation is misleading in that
it also says that the X points must be monotonic
(not strictly monotonic).  This is not correct.

So, the new attached interp1_new.diff removes the
test for NO distinct points and corrects the interp1.txi
file.  There should be a test for only one duplicate
pair, so I inserted a FIXME: to that effect. This test
is to be written.

Does everyone agree that the (not Matlab compatible)
duplicate pair should be supported?

I am testing this now.  Comments?

(file #26392)
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File name: interp1_new.diff               Size:1 KB


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