with DEC C.

DEC C doesn't handle double values greater than DBL_MAX, but some
PostgreSQL geo functions assign greater than DBL_MAX values to some vars
in some special cases - that couses SIGFPE. I dunno if that is the only place
to fix to work well with DEC C.

Kirill Nosov.

From: Tatsuo Ishii <t-ishii@sra.co.jp>

Ok. I made patches replacing all of "#if FALSE" or "#if 0" to "#ifdef
NOT_USED" for current. I have tested these patches in that the
postgres binaries are identical.

Bracket things with #ifdef ENABLE_LINE_TYPE.
The line data type has always been used internally to support other types,
 but I/O routines have never been defined for it.

Incorporate patches from Gautam for line/point intersection.

Define close_ls(), close_lseg(), lseg_length().
Write real code for close_sb(), close_pb(), inter_sb(), inter_lb().
Repair lseg_perp() which determines if two lsegs are perpendicular.
Repair lseg_dt() distance between two lsegs.
Note: close_sl() is clearly broken  but will repair later
 (calculating point on lseg rather than point on line).

Allow varchar() to only store needed bytes.  Remove PALLOC,PALLOCTYPE,PFREE.  Clean up use of VARDATA.

 Polygon input would not accept single-point polygon output and dump.

Fix up tabbing of most function declarations.

Another PGINDENT run that changes variable indenting and case label indenting.  Also static variable indenting.

Change time function names to be more consistent, and check for zero divides, from Michael Reifenberg.

Change box terminology from "length" to "width".
 Use length terminology in common with other geometric types (usually perimeter).
Fix bugs in line arithmetic which resulted in bad intersection calculations.
Deprecate temporary unstored slope fields.
Check explicitly for intersections at endpoints to avoid rounding ugliness.
Add center() routines for lseg, path, polygon.
Add distance() routines for circle-polygon, polygon-polygon.
Check explicitly for points and polygons contained within polygons
 using an axis-crossing algorithm. (Old code just checked bounding boxes).
Add routine to convert circle-box.
*whew*

migration from pre-v6.1 geometric data types.
Only allow new input syntax for paths and polygons.

Fix up decoder field masks for timespan and reltime.

Subject: [PATCHES] Re: [PORTS] AIX 6.1 fixes...

Here are the patches for the two things that wouldn't make it thru the AIX
compiler.  The geo_ops.c change is harmless I believe.  The nbtcompare.c patch
fixes me, but I don't know about any other ports.  Maybe wait on that one
until Vadim decides what to do about the unsigned vs signed chars varlena
issue.