1Emilio Platzer <emilio.platzer@ipark.tv> writes:
> I need to a "double precision" with magniude (ie meters, kilo, dolar,
> etc). And can operate with them (ie dolar+dolar=dolar or
> dolar/dolar=double precision).
> Do you know some pluggin or module to do this?
Yeah, there's a "tagged types" module on pgfoundry or someplace.
Check the list archives.
regards, tom lane