[R] sprintf() question

[(Ted Harding)]

On 17-May-09 22:03:19, Daniel Nordlund wrote:
> When I type the following, I get results different from what I
> expected. 
> 
>> sprintf('%a',3)
> [1] "0x1.8"
> 
> Shouldn't the result be
> 
> [1] "0x1.8p+2"

Well, not "p+2" but "p+1"
  (0x1.8 = 1.1000[2] ; *2 = 11.000[2] = 3[10]) ;
however, I get:

  sprintf('%a',3)
  # [1] "0x1.8p+1"

which is indeed correct.

  R version 2.9.0 (2009-04-17) ## Same as yours
  platform  i486-pc-linux-gnu  ## Different from yours ...

which perhaps suggests that there may be a mis-compilation in the
Windows version.

Ted.

> I read through the help ?sprintf and didn't find anything that changed
> my expectation.  What am I misunderstanding?  I am using R-2.9.0 binary
> from CRAN on Windows XP Pro, and my session info is
> 
> 
>> sessionInfo()
> R version 2.9.0 (2009-04-17) 
> i386-pc-mingw32 
> 
> locale:
> LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
> States.1252;LC_MONETARY=English_United
> States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base   
>> 
> 
> Thanks for any enlightenment.
> 
> Dan
> 
> Daniel Nordlund
> Bothell, WA  USA
> 
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E-Mail: (Ted Harding) <Ted.Harding at manchester.ac.uk>
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Date: 17-May-09                                       Time: 23:32:19
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