chop off non-meaningful digits

["SunWuKung" <Balazs.Klein@xxxxxxxxxxx>]

What would be the easiest way to get back only the meaningful digits of
a numeric value in a pgsql function? eg?

1.002 --> 1.002
1.020 --> 1.02
1.200 --> 1.2
1.000 --> 1

Thanks
SWK