[Octave-bug-tracker] [bug #47314] optim package: quadprog() equality constraints have opposite sign

[Olaf Till]

Follow-up Comment #7, bug #47314 (project octave):

I quote myself from

http://lists.gnu.org/archive/html/octave-maintainers/2015-07/msg00250.html

Lambda should be inherently non-negative. Don't change it's sign to get the
same value as Matlab. I don't know why they return a negative value.

(end quote)

Please explain if you have a different opinion. ('Matlab makes it different'
is _no_ explanation.)

I was never lucky with returning lambda at all. Do you indeed need it for
something, or have you just seen that Matlab returns a different value?

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