Blackbox Transpose is not a blackbox

[ClementPernet]

It offers setEntry and getEntry methods, calling the setEntry and getEntry of the template argument (supposed to be a blackbox). Hence it can not be used to build a transpose matrix of a blackbox. It is however used with sparse matrices. Note that there is already a dedicated blackbox-style transpose class for BlasMatrix: TransposeBlasMatrix which assumes to be constructed on top of another BlasMatrix or TransposeBlasMatrix.

Suggestion:

• blackbox/transpose.h is only used for blackboxes (only offers apply)
• matrix/densematrix/transpose.h is the current TransposeBlasMatrix class dealing with blasmatrices
• matrix/sparsematrix/transpose.h is a transpose class with getEntry and setEntry.

[ClementPernet]

Or alternatively, let's have just one class for all 3 cases: the methods specific to one type (getEntry, setEntry for SparseMatrix and BlasMatrix, getPointer, getStride for BlasMatrix) are defined, but will not be compiled when the Transpose of a blackbox matrix is made, since they will not be called.