[postgis-tickets] [PostGIS] #3997: Division by zero in iterate_4d

[PostGIS]

#3997: Division by zero in iterate_4d
------------------------+---------------------------
 Reporter:  Algunenano  |      Owner:  strk
     Type:  defect      |     Status:  new
 Priority:  medium      |  Milestone:  PostGIS 2.5.0
Component:  liblwgeom   |    Version:  trunk
 Keywords:              |
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 There is a typo calculating distances in the z-axis.

 It appeared as an error as a division by zero
 {{{
 lwgeom_median.c:111:17: runtime error: division by zero
 }}}
 in the test
 {{{
 do_median_test("MULTIPOINT ZM ((0 -1 0 1), (0 0 0 1), (0 1 0 0.5), (0 1 0
 0.5))", "POINT (0 0 0)", LW_TRUE, 1000);
 }}}

 Github PR: https://github.com/postgis/postgis/pull/196

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/3997>
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