Created and updated TODO at start of file.

/* See Copyright Notice in tnl/Copyright */

// TODO

/*

 * getType()                        ::HOW?  How to test this for each format? edit string how?

 * getTypeVirtual()                 ::TEST? This just calls getType().

 * getSerializationType()           ::TEST? This just calls HostType::getType().

 * getSerializationTypeVirtual()    ::TEST? This just calls getSerializationType().

 * setDimensions()                      ::DONE

 * setCompressedRowLengths()            ::DONE

 * getRowLength()                   ::USED! in test_setCompressedRowLengths() to verify the test.

 * getRowLengthFast()               ::TEST? How to test __cuda_callable__?

 * setLike()                            ::DONE

 * reset()                              ::DONE

 * setElementFast()                 ::TEST? How to test __cuda_callable__?

 * setElement()                         ::DONE

 * addElementFast()                 ::TEST? How to test __cuda_callable__?

 * addElement()

 * setRowFast()                     ::TEST? How to test __cuda_callable__?

 * setRow()

 * addRowFast()                     ::TEST? How to test __cuda_callable__?

 * addRow()

 * getElementFast()                 ::TEST? How to test __cuda_callable__?

 * getElement()

 * getRowFast()                     ::TEST? How to test __cuda_callable__?

 * MatrixRow getRow()               ::TEST? How to test __cuda_callable__?

 * ConstMatrixRow getRow()          ::TEST? How to test __cuda_callable__?

 * rowVectorProduct()               ::TEST? How to test __cuda_callable__?

 * vectorProduct()

 * addMatrix()

 * getTransposition()

 * performSORIteration()

 * operator=()

 * save( File& file)

 * load( File& file )

 * save( String& fileName )

 * load( String& fileName )

 * print()

 * setCudaKernelType()

 * getCudaKernelType()              ::TEST? How to test __cuda_callable__?

 * setCudaWarpSize()

 * getCudaWarpSize()

 * setHybridModeSplit()

 * getHybridModeSplit()             ::TEST? How to test __cuda_callable__?

 * spmvCudaVectorized()             ::TEST? How to test __device__?

 * vectorProductCuda()              ::TEST? How to test __device__?

 */

#include <TNL/Matrices/CSR.h>

#include <TNL/Matrices/Ellpack.h>

#include <TNL/Matrices/SlicedEllpack.h>