On Tue, May 13, 2008 at 02:36:18PM -0400, Justin wrote: > Double holds 15 places which is the highest value of precision it can > maintain before rounding occurs. > > Is is limit less no, but what is? > > Practically speaking taking a vale 0.000,000,000,000,001 aka > 1 trillionth of anything,
But remember that if you add this value onto a large number and then take off the large number the result will be zero. (0.000,000,000,01 + 1,000,000) - 1,000,000 ==> 0 0.000,000,000,01 + (1,000,000 - 1,000,000) ==> 0.000,000,000,01 In general, operations on floating point numbers will increase their errors. > i view the problem solved for 98% of problems. Floating point math is good for most problems, hence why most languages expose the abstraction. Sam -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
