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d62132
2013 Mar 20
1
double in summary.c : isum
Hi,
Please consider the following :
> x = as.integer(2^30-1)
[1] 1073741823
> sum(c(rep(x, 10000000), rep(-x,9999999)))
[1] 1073741824
Tested on 2.15.2 and a recent R-devel (r62132).
I'm wondering if s in isum could be LDOUBLE instead of double, like
rsum, to fix this edge case?
https://svn.r-project.org/R/trunk/src/main/summary.c
Thanks,
Matthew