Re: Re: sampling.c and potential divisions by 0 ang log(0) with tablesample and ANALYZE in 9.5

On 2015-07-02 02:51, Michael Paquier wrote:
> On Wed, Jul 1, 2015 at 3:52 AM, Tom Lane wrote:
>> Rather than expanding the API of port.h still further
>> [...]
>
> The current trend, as far as I am understanding it, is not to increase
> the amount of code in src/port, but actually to reduce it and to rely
> a maximum on what modern platforms offer. See for example the recent
> discussion about rint and numeric rounding here:
>
http://www.postgresql.org/message-id/flat/20150320194337.2573.72944@wrigleys.postgresql.org#20150320194337.2573.72944@wrigleys.postgresql.org
> We are keeping rint around because MSVC just added it recently in
> MS2013 even if the POSIX spec has it for a long time, but I am sure
> that we would drop it asap from the code tree if we could.
>

Which is completely moot point here because the sampling depends on
pg_erand48 on every platform no matter what the platform provides.

--
  Petr Jelinek                  http://www.2ndQuadrant.com/
  PostgreSQL Development, 24x7 Support, Training & Services