see also this page for code showing denominators from 1 to 19
Passing Real Numbers as Macro Variables
Using SymputX to Convert Real Numbers to Macro Variables
http://tinyurl.com/yes6hr5 for this page:
> -----Original Message-----
> From: firstname.lastname@example.org [mailto:owner-sas-
> email@example.com] On Behalf Of Wei Wang
> Sent: Thursday, February 25, 2010 5:26 PM
> To: SAS-L@LISTSERV.UGA.EDU
> Subject: Sum of 25.47 and -25.47 is not equal to zero
> Hi, guys,
> The sum of 25.47 and -25.47 is equal to 3.5527E-15, not zero.
> Accordingly, the percentage is a small number (25.47/3.5527E-15 =
> 7.1692E15) instead of missing.
> Anyone knows why this happens?