[datatable-help] Does setkey silently coerce numeric to integer?

[steve border]

Hi,
I'm using data.table 1.5 with R2.11.1 on WinXP and I got caught out when a 
setkey on a numeric column converted it silently to integer.
Is that a known feature? I was surprised as the setkey function appears to do 
some checking for potential loss of information. Let me know and I will get 
a reproducible example for you.

thanks,
Steve