On 2010-06-25, Lee Hachadoorian <lee.hachadoorian@gmail.com> wrote:
> Is it documented anywhere that floating-point numbers round
> "scientifically", that is 0.5 rounds to the nearest even number?
That's swiss rounding. And no, as I understand it documented that
most arithmetic) is platform specific.
Postgres is written in C and the relevant portions of the
C standards douments (and discussions thereof) give a good
picture of the functioning of postgres arithmetic.