[ET Trac] [Einstein Toolkit] #1631: The dgfe branch for McLachlan generates NaNs

[Einstein Toolkit]

#1631: The dgfe branch for McLachlan generates NaNs
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  Reporter:  Jonah Miller <jonah.maxwell.miller@…>          |       Owner:  eschnett                   
      Type:  defect                                         |      Status:  reviewed_ok                
  Priority:  optional                                       |   Milestone:  ET_2014_11                 
 Component:  EinsteinToolkit thorn                          |     Version:  development version        
Resolution:                                                 |    Keywords:  dgfe,mclachlan,gamma driver
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Comment (by diener):

 This patch doesn't work when applied to the rewrite branch. This is due to
 vector instructions being used and so the variable shiftGammaCoeffValue is
 declared as a CCTK_REAL_VEC. Comparing this to a scalar value does not
 work. The easy fix is to replace shiftGammaCoeffValue with the scalar
 parameter shiftGammaCoeff. The expression for shiftGammaCoeffValue
 guarantees that it is zero if shiftGammaCoeff is.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1631#comment:7>
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