On Friday 25 June 2010 3:53:01 pm Lee Hachadoorian wrote: > Is it documented anywhere that floating-point numbers round > "scientifically", that is 0.5 rounds to the nearest even number? Compare: > > SELECT round(2.5::real), round(2.5::numeric), round(3.5::real), > round(3.5::numeric); > > generates > > 2 | 3 | 4 | 4 > > I stumbled across this when I was trying to use round(a::real/b::real) > to generate a rounded result to dividing integers, and noticed sometimes > 0.5 was truncated and sometimes it was rounded up. Couldn't find > anything about this in the archives or the data type documentation. Is > there something obvious that I'm I missing? > > Thanks, > > -- > > Lee Hachadoorian > PhD Student, Geography > Program in Earth & Environmental Sciences > CUNY Graduate Center
See here for explanation: http://archives.postgresql.org/pgsql-general/2010-03/msg00969.php -- Adrian Klaver adrian.kla...@gmail.com -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql
