[Octave-bug-tracker] [bug #51148] residue function potentially inaccurate

[anonymous]

Follow-up Comment #11, bug #51148 (project octave):

I just examined the effect of different permutations of the input data on the
result of the residue function (by removing the semicolon after the residue
function and commenting out the rest of the foster2cauer function). I found
that in two cases, I do not get


p =

  1.0000e+018  9.0036e+027  1.1289e+036  1.7010e+047

q =

  1.0000e+000  1.9231e+015  3.2045e+024  1.3427e+032  2.3274e+038


but


p =

  1.0000e+018  9.0036e+027  1.1294e+036  -7.5446e+047

q =

  1.0000e+000  1.9231e+015  3.2045e+024  1.3427e+032  2.3274e+038


This reinforces the impression that there is something wrong here.

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