[ET Trac] [Einstein Toolkit] #254: tensorparity=-1 quantities in ReflectionSymmetry

[Einstein Toolkit]

#254: tensorparity=-1 quantities in ReflectionSymmetry
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 Reporter:  roland.haas@…                   |        Type:  defect
   Status:  new                             |    Priority:  major 
Milestone:                                  |   Component:  Cactus
  Version:                                  |    Keywords:        
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 I would like to suggest applying the attached patch to ReflectionSymmetry
 to fix (I believe) its handling of the tensorparity attribute.

 Explanation/Rationale:

 In ReflectionSymmetry/interpolate.c parities[dir] is set to the behaviour
 under reflection across the "dir"=0 plane of an object of type
 tensortypealis. It does not take tensorparity into account. Therefore
 check_dir[dir] must take tensorparity into account explicitly.

 The second change is "parity = 1" instead of "parity = tensorparity" which
 states that if a point is never reflected then the value that was on the
 grid is to be used as-is.

 I have tested these changes with the magnetic field created by a wire
 along the x,y,z axis and reflection across the various planes and with
 RotatingSymmetry180 and *90. Please see ticket #149
 https://trac.einsteintoolkit.org/ticket/149
 for sample parameter files and test scripts.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/254>
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