added postMultiply* versions of multiply* functions #657
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although postMultiplyFullStateDiagMatr may require a bespoke backend function
which required updating the backend functions since FullStateDiagMatr makes use of an optimisation that precludes twice-enumerating the density matrix
as a template for other doc
which required that we undo the transpose effected upon the operation which results from operating upon the bra-space of the vectored density matrix
which required undoing the transpose upon the operation which exists from operating upon the bra-qubits of the vectorised density matrix. This required... - giving the backend any-sized dense matrix function an additional ApplyTransp template (and updating all the associated function instantiation/dispatching - happily simplifying it) - we hijacked the cuQuantum backend (which can effect the adjoint) to effect the transpose by pre-conjugating - transposing 1 and 2 qubit dense matrices in localiser.cpp
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Paid tests passed, except for a now-patched validation issue (use of a density matrix over statevector un-triggered distributed |
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