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

[Michael Godfrey]

Follow-up Comment #9, bug #36732 (project octave):

After applying this patch, I get:
>>>>> processing
/media/GoFlex08/qss/d/src/octave/hg/octave/scripts/general/interp1.m
  ***** assert (interp1 ([1,2,2,3,4],[0,1,4,2,1],[-1,1.5,2,2.5,3.5], "linear",
"extrap"), [-2,0.5,4,3,1.5])
!!!!! test failed
interp1: X should have distinct values
shared variables   scalar structure containing the fields:
    xp =
        0    2    4    6    8   10
    yp =
       0.00000   0.58779  -0.95106   0.95106  -0.58779  -0.00000
    xi =
       -1.00000    0.00000    2.20000    4.00000    6.60000   10.00000  
11.00000
    style = *spline
  ***** assert (interp1 ([4,4,3,2,0],[0,1,4,2,1],[1.5,4,4.5], "linear"),
[1.75,1,NA])
!!!!! test failed
interp1: X should have distinct values
shared variables   scalar structure containing the fields:
    xp =
        0    2    4    6    8   10
    yp =
       0.00000   0.58779  -0.95106   0.95106  -0.58779  -0.00000
    xi =
       -1.00000    0.00000    2.20000    4.00000    6.60000   10.00000  
11.00000
    style = *spline
========================================

devel system on Fedora 17 x86_64 and JIT and GUI enabled.  No errors
before this patch,


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