On Sat, Nov 20, 2010 at 10:38 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> The trouble with that approach is that you have to depend on the
> direction of rounding for negative quotients. Which was unspecified
> before C99, and it's precisely pre-C99 compilers that are posing a
> hazard to the current coding.
Interesting. I wondered whether there might be compilers out there
that handled that inconsistently, but then I thought I was probably
being paranoid.
> Likewise for the int64 case, which BTW is no safer for pre-C99 compilers
> than it was yesterday: LL is not the portable way to write int64
> constants.
Gah. I wish we had some documentation of this stuff.
--
Robert Haas
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