[postgis-tickets] [PostGIS] #3401: ST_ModEdgeSplit makes topology invalid

[PostGIS]

#3401: ST_ModEdgeSplit makes topology invalid
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  Reporter:  strk      |      Owner:  strk
      Type:  defect    |     Status:  new
  Priority:  blocker   |  Milestone:  PostGIS 2.2.1
 Component:  topology  |    Version:  trunk
Resolution:            |   Keywords:  32bit
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Comment (by nicklas):

 strk

 Quite long time ago there was some issue, and if I recall right it was
 about st_split, that was caused by the way the distance functions work.

 Because distance functions use the same algorithms as st_closestpoint it
 calculates a point on a line that is truncated to double precision. Then
 the distance is calculated to that point.

 That approach can give a slightly different distance than calculating the
 distance directly and truncating the distance itself to double precision.

 Can this be the same issue?

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3401#comment:13>
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