On Nov 19, 2013, at 6:02 AM, S Ellison wrote: >>> For example, i am performing this simple arithmetic: >>> 23-(1.346493052*16)+(.663965156*11)+(.008569426*5)-15.23480728 >>> >>> R gives the result --> -6.432232271 > > > My machine (win32, R 3.0.1) gives -6.432232266 > > Something about your machine, or typing, is different.
I get the same, at least when printing to the same degree of accuracy: > x <- 23-(1.346493052*16)+(.663965156*11)+(.008569426*5)-15.23480728 > print(x, digits=10) [1] -6.432232266 Mac OSX 10.7.5, R 3.0.2 > It shouldn't be R, as the help system implies it uses the same precision and > IEEE floating point rules for all platforms.... > > > S Ellison -- David Winsemius Alameda, CA, USA ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
