Обсуждение: contrib/cube

I changed my version of contrib/cube to use double precision for most
things (the gist cost functions) in the package. This provides more
accuracy, but the exponents may still be limited or the gist cost
functions may supply bogus results.
I changed the output string allocation to use the dimension to figure out
how much space to request. I also use '%.16g' instead of '%g' to print
out elements.
I added four functions to make the individual elements and dimension accessible
(for making views in a different coordinate system) and a function that
returns whether or not a box is a point.
I haven't updated the regression test to test the new functions or account
for some output differences that come from increasing the precision in the
output format.

This is good enough for what I want. If these changes are something that
might get added to contrib/cube I can fix up the regression test and
make the changes available. If this isn't something of enough general
interest to worry about, then I won't.

Bruno Wolff III <bruno@wolff.to> writes:
> I changed the output string allocation to use the dimension to figure out
> how much space to request. I also use '%.16g' instead of '%g' to print
> out elements.

I already fixed that part better.

> This is good enough for what I want. If these changes are something that
> might get added to contrib/cube I can fix up the regression test and
> make the changes available. If this isn't something of enough general
> interest to worry about, then I won't.

The other changes sound reasonable.  Fix the regression test and the
documentation and send a patch...

            regards, tom lane

On Sun, Aug 18, 2002 at 16:23:18 -0400,
  Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> The other changes sound reasonable.  Fix the regression test and the
> documentation and send a patch...

I am going to try to get it to work with today's cvs version so I can
give you diffs versus something recent.

While trying to make the cvs version I had a problem with the perl5
interface. The type 'bool' wasn't recognized in headers included from
my perl distribution (5.00503). Adding an include of "c.h" in Pg.c
seemed to fix the problem.