DispatchGroup was not using R_LookupMethod for the group generic; should be fixed in R-devel now.
luke On Wed, 23 Jul 2003, Prof Brian Ripley wrote: > Something seems wrong in the way the group generics are registered, as > they are not being called. As a workaround, add > > export(Math.fractions,Ops.fractions,Summary.fractions) > > to library/MASS/NAMESPACE and the examples seem to work again. > > On Wed, 23 Jul 2003, Barry Rowlingson wrote: > > > Prof Brian Ripley wrote: > > > On Tue, 22 Jul 2003, Duncan Murdoch wrote: > > > > > This is not even a VR bug: no one said abs() is implemented for fractions, > > > and it is not. From the help page: > > > > > > Arithmetic operations on `"fractions"' objects are possible. > > > > > > and abs() is not such an operation. > > > > > > > Something funny is happening with printing fractions - the values seem > > correct under abs() [and other functions]: > > > > > xf > > [1] 2 -2/5 2/5 2/3 > > > abs(xf) > > [1] 2 -2/5 2/5 2/3 > > > abs(xf)[2] > > [1] 2/5 > > > > huh? > > > > > sqrt(xf) > > [1] 2 -2/5 2/5 2/3 > > Warning message: > > NaNs produced in: sqrt(xf) > > > > > sqrt(xf)[1:4] > > [1] 8119/5741 NaN 191/302 38804/47525 > > Warning message: > > NaNs produced in: sqrt(xf) > > > > Bug, undocumented behaviour, feature? I dont know. It all seems to > > work in 1.6.0, so everyone should downgrade now... :) > > > > Baz > > > > ______________________________________________ > > [EMAIL PROTECTED] mailing list > > https://www.stat.math.ethz.ch/mailman/listinfo/r-devel > > > > -- Luke Tierney University of Iowa Phone: 319-335-3386 Department of Statistics and Fax: 319-335-3017 Actuarial Science 241 Schaeffer Hall email: [EMAIL PROTECTED] Iowa City, IA 52242 WWW: http://www.stat.uiowa.edu ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-devel