You've hit on the reason -- representation of NA src/main/arithmetic.c:157: R_NaInt = INT_MIN;
(R-devel seems more appropriate for this question). Martin Saptarshi Guha <saptarshi.g...@gmail.com> writes: > Hello, > I'm using R-2.9 and have a question about integer ranges. On C, (OS X > platform), > LONG_MIN and LONG_MAX(from limits.h) correspond to -2147483648(-2^31) > and 2147483647 (2^31-1) > In Java(1.4), Integer.MIN_VALUE and Integer.MAX_VALUE have the same values. > > On R, as.integer(2^31-1) is the maximum (without returning NA) but the > lowest is -2147483647 (-2^31+1) > > > as.integer((-2)^31) > [1] NA > > So in both Java and C can hold 2^32 different values, but R holds 2^32 > -1 different values. > > Have I made a mistake? Is there a reason for the difference? > > Thank you > Saptarshi > > ______________________________________________ > 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. -- Martin Morgan Computational Biology / Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N. PO Box 19024 Seattle, WA 98109 Location: Arnold Building M1 B861 Phone: (206) 667-2793 ______________________________________________ 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.