Re: st: variables precision

[Kyle Hood <kyle.hood@yale.edu>]

couldn't you just recast both as floats (generating a new pair of 
variables), do the operation, and then, if you wish, delete the new 
variables?

something like this

gen float xf = x
gen float yf = y
gen z = xf < yf
drop xf yf



On Thu, 5 Apr 2007, sara borelli wrote:


> Dear Statalist members
>
> I know this is a precision question already posted in
> the past, but I have difficulties to understand the
> right way to go even after looking at the archives of
> statalist
>
> I have two variables:
>  x        y
> 17.68    17.68
> 15.56    15.56
> 19.27    19.27
> 5.3      5.3
>
> If I write 'count if x<y' stata says that all
> observations satisfy this inequality, when in fact the
> values 'look' the same. I think this has to do
> with the fact that x is stored as double, while y is
> stored as float. Is there any way I can say stata to
> read the values as they "appear" and thus performing
> calculations correctly (in this case I would need
> stata say that there are zero observations for which
> x<y)? I am sorry to repeat this question, but any
> suggestion would be really appreciated
>
> thanks
> Sara
>
>
>
>
>
>
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