[postgis-tickets] [PostGIS] #3473: sfcgal regression failure on debbie and winnie run -possible rounding issue (was: sfcgal regression failure on PostgreSQL 9.2 (debbie run) -possible rounding issue)

[PostGIS]

#3473: sfcgal regression failure on debbie and winnie run -possible rounding issue
------------------------+---------------------------
  Reporter:  robe       |      Owner:  robe
      Type:  defect     |     Status:  new
  Priority:  high       |  Milestone:  PostGIS 2.2.2
 Component:  buildbots  |    Version:  trunk
Resolution:             |   Keywords:
------------------------+---------------------------

Comment (by robe):

 I ammended the ticket.  Seems winnie is complaining too but on her first
 run which is a 9.5 run.


 {{{
 Loading SFCGAL into 'postgis_reg'
   /projects/postgis/branches/2.3/regress/00-regress-
 install/share/contrib/postgis/sfcgal.sql
   /projects/postgis/branches/2.3/regress/00-regress-
 install/share/contrib/postgis/sfcgal_comments.sql
 PostgreSQL 9.5.1, compiled by Visual C++ build 1800, 32-bit
   Postgis 2.3.0dev - r14709 - 2016-02-26 15:07:42
   scripts 2.3.0dev r14709
   GEOS: 3.5.0-CAPI-1.9.0 r4090
   PROJ: Rel. 4.9.1, 04 March 2015
   SFCGAL: 1.2.2

 }}}

 {{{
 sfcgal/tickets .. failed (diff expected obtained:
 /projects/postgis/tmp/2.3.0dev_pg9.5_geos3.5.0_gdal2.0.1w32/test_118_diff)
 -----------------------------------------------------------------------------
 --- sfcgal/tickets_expected     2015-11-09 19:16:00 -0500
 +++
 /projects/postgis/tmp/2.3.0dev_pg9.5_geos3.5.0_gdal2.0.1w32/test_118_out
 2016-02-26 10:10:38 -0500
 @@ -240,4 +240,4 @@
  #2110.1|f
  #2110.2|t
  #2110.3|t
 -#2145|6792004
 +#2145|6792007
 -----------------------------------------------------------------------------
 }}}

 I think debbie's failed on 9.2, because that's her touchstone build.  So
 now I'm not sure if the sfcgal output is just wrong (should be 6792007) or
 if a rounding issue.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3473#comment:1>
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