[postgis-devel] [PostGIS] #1170: North Pole Intersection fails with "Coordinate values out of range"

[PostGIS]

#1170: North Pole Intersection fails with "Coordinate values out of range"
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 Reporter:  jgilman   |       Owner:  pramsey      
     Type:  defect    |      Status:  new          
 Priority:  critical  |   Milestone:  PostGIS 1.5.4
Component:  postgis   |     Version:  1.5.X        
 Keywords:            |  
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Comment(by pramsey):

 Yes, this is it, as taking apart just the transformation step shows:
 {{{
 select st_y(st_transform(st_transform(ST_GeomFromText( 'SRID=4326;POINT(0
 90)'), _st_bestsrid(ST_GeogFromText( 'POINT(0 90)'))),4326)) - 90.0;

       ?column?
 ---------------------
  2.8421709430404e-14
 }}}
 It shouldn't, but proj is creating the returned point every so slightly
 above 90.

-- 
Ticket URL: <http://trac.osgeo.org/postgis/ticket/1170#comment:5>
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