[R] make check fails for 1.3.0 on SGI at ISOdate(1901,1,1)

[Prof Brian Ripley]

On Tue, 26 Jun 2001 Setzer.Woodrow at epamail.epa.gov wrote:

>
> In fact, ISOdate fails with any date earlier than 1970 on this system:
>
> > ISOdate(1969,12,31)
> [1] "NA"
> > ISOdate(1970,1,1)
> [1] "1970-01-01 07:00:00 EST"
>
> The problem is in strptime:
>
> > strptime(paste(1970,1,1,12,0,0),"%Y %m %d %H %M %S")
> [1] "1970-01-01 12:00:00"
> > strptime(paste(1969,12,31,12,0,0),"%Y %m %d %H %M %S")
> [1] "NA"
>
> The man page for strptime doesn't mention any limitations.

R's or SGI's?  The limitation seems to be on SGI only, and I've sent
privately some suggestions.   Windows has (had before I fixed the code)
the same problem, but then Microsoft didn't exist in 1970 (although Bill
Gates did, so he must have problems with his date of birth).


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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