openfoam/applications/test/globalIndex2/Test-globalIndex2.cxx
Mark Olesen cfb752647a ENH: globalIndex and CompactListList improvements
- provide a globalIndex::calcOffsets() taking an indirect list, which
  enables convenient offsets calculation from a variety of inputs.

- new CompactListList unpack variant: copy_unpack()
  The copy_unpack() works somewhat like std::copy() in that it writes
  the generated sublists to iterator positions, which makes this
  type of code possible:

      CompactListList<label> compact = ...;
      DynamicList<face> extracted;

      compact.copy_unpack<face>
      (
          std::back_inserter(extracted),
          labelRange(4, 10)
      );

  -and-

      const label nOldFaces = allFaces.size();
      allFaces.resize(allFaces + nNewFaces);

      auto iter = allFaces.begin(nOldFaces);

      iter = compact.copy_unpack<face>(iter, /* selection 1 */);
      ...
      iter = compact.copy_unpack<face>(iter, /* selection 2 */);

ENH: globalIndex resize()

- can be used to shrink or grow the offsets table.
  Any extension of the offsets table corresponds to 'slots'
  with 0 local size.
2023-11-20 09:35:59 +01:00

96 lines
2.8 KiB
C++

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | www.openfoam.com
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2023 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
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Application
Test-globalIndex2
Description
More functional tests for the globalIndex class.
\*---------------------------------------------------------------------------*/
#include "globalIndex.H"
#include "argList.H"
#include "Time.H"
#include "IOstreams.H"
#include "Random.H"
#include "IndirectList.H"
#include "SliceList.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:
int main(int argc, char *argv[])
{
Random rnd(123456);
// #include "setRootCase.H"
// #include "createTime.H"
Info<< nl
<< "simple globalIndex tests" << nl << nl;
Info<< "Construct from indirect list(s)" << nl;
{
// Some sizes
labelList rawSizes(25);
forAll(rawSizes, i)
{
rawSizes[i] = rnd.position<label>(0, 100);
}
Info<< nl
<< "plain sizes: "
<< flatOutput(rawSizes) << nl
<< " offsets: "
<< flatOutput(globalIndex::calcOffsets(rawSizes))
<< nl;
sliceRange slice(0, 5, 5);
Info<< nl
<< "range min/max " << slice.min() << '/' << slice.max() << nl;
SliceList<label> sliceSizes(rawSizes, slice);
Info<< nl
<< "indirect addr: " << sliceSizes.addressing() << nl
<< "indirect sizes: "
<< flatOutput(sliceSizes) << nl
<< " offsets: "
<< flatOutput(globalIndex::calcOffsets(sliceSizes))
<< nl;
}
Info<< "\nEnd\n" << endl;
return 0;
}
// ************************************************************************* //