[Octave-bug-tracker] [bug #42037] Missing function integral

[Tatsuro MATSUOKA]

Follow-up Comment #4, bug #42037 (project octave):

>The "WayPoint" feature is also implemented in quadcc.

I cannot find such description in help and manual concerning quadcc.

So I tried: (octave-3.8.1 on windows 7)


octave> quadgk (@(x) abs (1 - x.^2), 0, 2, "Waypoints", 1)
ans =  2.0000


I simply substitute quadgk by quadcc. The result is


octave> quadcc (@(x) abs (1 - x.^2), 0, 2, "Waypoints", 1)
error: quadcc: tolerance (TOL) must be a single real scalar > 0


It seems that "WayPoints" feature of quadcc seems not to be implemented in the
same way for quadgk.

I pull the code of quadcc.cc in the source tree and search by the keyword
'Waypoints' but nothing is found.

I also the error messages in quadcc.cc,

quadcc: integrand F must return a single, real-valued vector"
quadcc: integrand F must return a single, real-valued vector of the same size
as the input

MATLAB function 'integral' supports complex integral so that it can be used
only real case.

My observation, only quadgk can handle complex integral in octave.
  

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