Am 09.10.2018 um 16:56 schrieb Russell, George:
Dear R developers,
I have found a minute bug in R-3.5.1 (Windows version), about how times not an
exact number of seconds are displayed.
as.POSIXct("1969-01-01 01:00")+0.3
[1] "1969-01-01 01:00:01 CET"
as.POSIXct("1970-01-01 01:00")+0.3
[1] "1970-01-01 01:00:00 CET"
So for 1969, adding 0.3 of a second means you round UP, for 1970 you round
DOWN. But I think it should be consistent.
More likely a bug in the underlining C library
The Cygwin build does not show the problem
> as.numeric(as.POSIXct("1969-01-01 01:00")+0.3)
[1] -31535999.7
> as.POSIXct("1969-01-01 01:00")+0.3
[1] "1969-01-01 01:00:00 CET"
> as.numeric(as.POSIXct("1969-01-01 01:00"))
[1] -31536000
> as.POSIXct("1969-01-01 01:00")
[1] "1969-01-01 01:00:00 CET"
> R.version
_
platform x86_64-unknown-cygwin
arch x86_64
os cygwin
system x86_64, cygwin
status
major 3
minor 5.1
year 2018
month 07
day 02
svn rev 74947
language R
version.string R version 3.5.1 (2018-07-02)
nickname Feather Spray
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