Ok, I think thats what I want to do. Is there any examples in Gecode that implement a custom propagator?
Pedro Salgueiro On Thu, 2008-11-13 at 11:10 +0100, Mauricio Toro wrote: > Hello, > > > I made something similar once. > My approach was writting a propagator > that waits until cvars[0] and cvars[1] > are assigned. Once they are assigned > it calls run_something. > > > I hope that helps, > > > Mauricio > > 2008/11/13 Pedro Salgueiro <[EMAIL PROTECTED]> > Hi! > > I have been experimenting Gecode for a while, and now I want > to make > something wich I don't know if its possible: > > I want to create a new "custom" constraint that allows to > relate/constraint a variable with a function that receives two > other > gecode variables as parameters. This function will be > something > completely external to gecode, and evan c++, so, by the the > this > function is called the gecode variables that are used on it > should > already have some values assigned to it. > > Here's how it would look: > > post(this, cvars[0] < 5) > post(this, cvars[1] < cvars[0] + 2) > post(this, new_constraint(cvars[2], run_something(cvars[0], > cvars[1]) > > In this example, we could just assume that the > "new_constraint" is used > to make sure that cvars[2] "<" > run_something(cvars[0],cvars[1]). > > Is this possible to do? If so, where should I start? > > Thank you all > Pedro Salgueiro > > > _______________________________________________ > Gecode users mailing list > [EMAIL PROTECTED] > https://www.gecode.org/mailman/listinfo/gecode-users > > > > -- > Mauricio Toro Bermudez > Estudiante de Ingeniería de Sistemas > Pontificia Universidad Javeriana, Colombia > > Stagiare à l'Ircam > 1, place Igor-Stravinsky 75004 Paris, > France de 2008 à 2009 > _______________________________________________ Gecode users mailing list [EMAIL PROTECTED] https://www.gecode.org/mailman/listinfo/gecode-users
