Hi Maybe FAQ 7.31 strikes again.
> .57 * 100==as.integer(57) [1] FALSE > Regards Petr r-help-boun...@r-project.org napsal dne 07.01.2010 13:31:42: > I have encountered a strange behaviour of as.integer() which does not > seem correct to me. Sorry if this is just an indication of me not > understanding floating point arithmetic. > > > .57 * 100 > [1] 57 > > .29 * 100 > [1] 29 > > So far, so good. But: > > > as.integer(.57 * 100) > [1] 56 > > as.integer(.29 * 100) > [1] 28 > > Then again: > > > all.equal(.57 * 100, as.integer(57)) > [1] TRUE > > all.equal(.29 * 100, as.integer(29)) > [1] TRUE > > This behaviour is the same in R 2.10.1 (Ubuntu and Windows) and 2.9.2 > (Windows), > all 32 bit versions. Is this really intended? > > ______________________________________________ > 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. ______________________________________________ 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.
