Hi, Perl: perl -e 'print -1.1-0.1+1.2. "\n";' -2.22044604925031e-16 perl -e 'print -1.2-0.2+1.4. "\n";' 0
A.K. ----- Original Message ----- From: massimodisasha <massimodisa...@gmail.com> To: ollestrat <stratm...@gmx.de>; r-help@r-project.org Cc: Sent: Tuesday, July 10, 2012 6:23 PM Subject: Re: [R] -1.1 - 0.1 + 1.2 is NOT null! Why? Il 7/10/12 4:17 PM, ollestrat ha scritto: > Hello, > > I fear its a stupid question,..but here it is: > > If I do this simple calculation with the R console, I surprisingly do not > get a zero. Why? > > -1.1-0.1+1.2 > [1] -2.220446e-16 > > > greetings, Ole > > -- > View this message in context: > http://r.789695.n4.nabble.com/1-1-0-1-1-2-is-NOT-null-Why-tp4636053.html > Sent from the R help mailing list archive at Nabble.com. > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ... Python : >>> -1.1-0.1+1.2 -2.220446049250313e-16 >>> -1.2-0.2+1.4 0.0 >>> R : > -1.1-0.1+1.2 [1] -2.220446e-16 > -1.2-0.2+1.4 [1] 0 > ______________________________________________ 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.