On Sat, 22 May 2004 06:34:14 +0200 (CEST), jkbreaux@san.rr.com wrote:
Full_Name: Jim Breaux Version: 1.9.0 OS: WinXP Submission from: (NULL) (209.78.110.135) According to the help for 'round' it is supposed to round to the even digit. However, see the following examples:
This is not a bug. The problem is that floating point types do not represent all decimal values exactly, so when you say > round(40.3655, 3) [1] 40.365 you are actually rounding a number which is slightly smaller than 40.3655. The rounding works as advertised on exactly representable numbers: > round(0.25,1) [1] 0.2 > round(0.75,1) [1] 0.8 Duncan Murdoch