James Cloos <cloos@jhcloos.com> writes:
> That said, the possiblity of hex i/o format for the float datatypes
> would be welcome.
It's unportable, for two different reasons:
1. pg_dump output would become platform-specific. This is highly
undesirable.
2. The printf specifiers you want us to rely on are not standard.
Cf Single Unix Spec,
http://www.opengroup.org/onlinepubs/007908799/xsh/fprintf.html
which does not define either %A or %a.
regards, tom lane