Is this a bug? Insert float into int column inserts rounded value instead of error.

List,

One of the reasons why I use postgres is because you can insert data and
it will work or give you an error instead of converting, truncating,
etc... well I found a place where postgres makes an erroneous
assumption and I'm not sure this is by design.

When inserting a float such as 4.12322345 into a int column postgres
inserts 4 instead of returning an error telling you that your value
won't fit. I would much rather have the error and check for it since I
can be sure I'll get 4.12322345 back out if I didn't get an error on insert.

Is this by design? If so I think it should be changed so that postgres
will always return your data exactly as you entered it if there isn't an
error on insert.

template1=# create table test (number int);
CREATE TABLE
template1=# insert into test (number) values (4.123123123);
INSERT 0 1
template1=# select * from test;
number
--------
4
(1 row)

Thanks,
schu