[Users] Odd CCTK_VarDataPtrI behaviour?

Federico Guercilena guercilena at th.physik.uni-frankfurt.de
Mon Oct 26 11:05:21 CDT 2015

(I write this second question in different message so it can be answered


when asking for a vector variable index with CCTK_VarIndex, it correctly
returns an increasing index for every variable component, for example:

CCTK_VarIndex (example_gf[0]) --> 180
CCTK_VarIndex (example_gf[1]) --> 181

However when the index is fed to CCTK_VarDataPtrI to get a pointer to the
grid function, it always points to the 0th component. To get the pointer to
the component I wanted, I had to increment the pointer by the correct

This not a major inconvenience, but it is quite counterintuitive. Is there
a reason for such behaviour?

Thanks again,
Federico Guercilena

Federico Guercilena
Institut für Theoretische Physik
Johann Wolfgang Goethe-Universität
Max-von-Laue-Str. 1
60438 Frankfurt am Main, Germany
Telephone: +49 69 798 47887
Email: guercilena[at]th.physik.uni-frankfurt.de
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