[Rd] Floating point problem (PR#7911)

[ahanlin at ginkgo.psych.gatech.edu]

<<insert bug report here>>



--please do not edit the information below--

Version:
 platform = i686-redhat-linux-gnu
 arch = i686
 os = linux-gnu
 system = i686, linux-gnu
 status = 
 major = 2
 minor = 0.0
 year = 2004
 month = 10
 day = 04
 language = R

Search Path:
 .GlobalEnv, package:methods, package:stats, package:graphics, package:grDevices, package:utils, package:datasets, Autoloads, package:base