R devel - Mar 2002 - rbinom silently rounds size argument (PR#1377)

rbinom (in R-1.4.1) silently rounds its "size" argument. 
  The C code contains 

    n = floor(nin + 0.5); 

  I would argue that this should this either be documented or changed (to 
return NA). (The behavior is inconsistent with dbinom). 

  I sent this in to the devel list a couple of weeks ago to
provoke discussion; no disagreement (or agreement) so I'm
submitting it as a bug.

  Ben Bolker

--please do not edit the information below--

Version:
 platform = i686-pc-linux-gnu
 arch = i686
 os = linux-gnu
 system = i686, linux-gnu
 status = 
 major = 1
 minor = 4.1
 year = 2002
 month = 01
 day = 30
 language = R

Search Path:
 .GlobalEnv, package:ctest, Autoloads, package:base

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Fixed for 1.5.0.  Note that pbinom and qbinom did it too.

On Tue, 12 Mar 2002 bolker@zoo.ufl.edu wrote:
> rbinom (in R-1.4.1) silently rounds its "size" argument.
>   The C code contains
>
>     n = floor(nin + 0.5);
>
>   I would argue that this should this either be documented or changed (to
> return NA). (The behavior is inconsistent with dbinom).
>
>   I sent this in to the devel list a couple of weeks ago to
> provoke discussion; no disagreement (or agreement) so I'm
> submitting it as a bug.
>
>   Ben Bolker
>
> --please do not edit the information below--
>
> Version:
>  platform = i686-pc-linux-gnu
>  arch = i686
>  os = linux-gnu
>  system = i686, linux-gnu
>  status >  major = 1
>  minor = 4.1
>  year = 2002
>  month = 01
>  day = 30
>  language = R
>
> Search Path:
>  .GlobalEnv, package:ctest, Autoloads, package:base
>
>
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> r-devel mailing list -- Read
http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
> Send "info", "help", or "[un]subscribe"
> (in the "body", not the subject !)  To:
r-devel-request@stat.math.ethz.ch
>
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>
-- 
Brian D. Ripley,                  ripley@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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